./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c7c6ca5d 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-more-queue-add-3-nl.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 5dd003755f1e361f3bbf00c3bfecbc1131b6df98a7806f5bb08971966b13d6ac --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 15:13:42,481 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 15:13:42,566 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-09 15:13:42,570 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 15:13:42,571 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 15:13:42,607 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 15:13:42,609 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 15:13:42,610 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 15:13:42,610 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 15:13:42,611 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 15:13:42,611 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 15:13:42,611 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 15:13:42,612 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 15:13:42,612 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 15:13:42,612 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 15:13:42,613 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 15:13:42,613 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 15:13:42,616 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 15:13:42,618 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 15:13:42,619 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 15:13:42,619 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 15:13:42,620 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 15:13:42,620 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 15:13:42,620 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 15:13:42,622 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 15:13:42,622 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 15:13:42,623 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 15:13:42,623 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 15:13:42,623 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 15:13:42,623 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 15:13:42,624 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 15:13:42,624 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 15:13:42,624 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 15:13:42,624 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 15:13:42,624 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:13:42,625 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 15:13:42,625 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 15:13:42,626 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 15:13:42,626 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 15:13:42,626 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 15:13:42,627 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 15:13:42,627 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 15:13:42,627 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 15:13:42,628 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 15:13:42,628 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5dd003755f1e361f3bbf00c3bfecbc1131b6df98a7806f5bb08971966b13d6ac [2024-11-09 15:13:42,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 15:13:42,908 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 15:13:42,911 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 15:13:42,913 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 15:13:42,913 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 15:13:42,914 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2024-11-09 15:13:44,398 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 15:13:44,595 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 15:13:44,595 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2024-11-09 15:13:44,603 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33702e04b/b9ce2571a5184861aa30a10f5cf46860/FLAGc6d0ccf00 [2024-11-09 15:13:44,988 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33702e04b/b9ce2571a5184861aa30a10f5cf46860 [2024-11-09 15:13:44,990 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 15:13:44,992 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 15:13:44,995 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 15:13:44,995 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 15:13:45,000 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 15:13:45,001 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:13:44" (1/1) ... [2024-11-09 15:13:45,002 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11885473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:45, skipping insertion in model container [2024-11-09 15:13:45,002 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:13:44" (1/1) ... [2024-11-09 15:13:45,033 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 15:13:45,289 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:13:45,302 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 15:13:45,330 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:13:45,349 INFO L204 MainTranslator]: Completed translation [2024-11-09 15:13:45,349 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:45 WrapperNode [2024-11-09 15:13:45,350 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 15:13:45,351 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 15:13:45,351 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 15:13:45,351 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 15:13:45,359 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:45" (1/1) ... [2024-11-09 15:13:45,367 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:45" (1/1) ... [2024-11-09 15:13:45,399 INFO L138 Inliner]: procedures = 25, calls = 41, calls flagged for inlining = 17, calls inlined = 19, statements flattened = 274 [2024-11-09 15:13:45,400 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 15:13:45,401 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 15:13:45,401 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 15:13:45,401 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 15:13:45,410 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:45" (1/1) ... [2024-11-09 15:13:45,411 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:45" (1/1) ... [2024-11-09 15:13:45,414 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:45" (1/1) ... [2024-11-09 15:13:45,432 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-09 15:13:45,432 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:45" (1/1) ... [2024-11-09 15:13:45,433 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:45" (1/1) ... [2024-11-09 15:13:45,440 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:45" (1/1) ... [2024-11-09 15:13:45,450 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:45" (1/1) ... [2024-11-09 15:13:45,452 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:45" (1/1) ... [2024-11-09 15:13:45,458 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:45" (1/1) ... [2024-11-09 15:13:45,463 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 15:13:45,464 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 15:13:45,464 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 15:13:45,465 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 15:13:45,465 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:45" (1/1) ... [2024-11-09 15:13:45,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:13:45,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:13:45,496 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) [2024-11-09 15:13:45,498 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 [2024-11-09 15:13:45,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 15:13:45,538 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 15:13:45,538 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 15:13:45,538 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 15:13:45,538 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 15:13:45,538 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-09 15:13:45,538 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-09 15:13:45,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 15:13:45,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 15:13:45,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 15:13:45,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 15:13:45,539 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-09 15:13:45,539 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-09 15:13:45,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 15:13:45,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 15:13:45,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 15:13:45,540 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 15:13:45,540 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 15:13:45,542 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 15:13:45,647 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 15:13:45,648 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 15:13:46,080 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 15:13:46,081 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 15:13:46,451 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 15:13:46,452 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-09 15:13:46,453 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:13:46 BoogieIcfgContainer [2024-11-09 15:13:46,453 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 15:13:46,456 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 15:13:46,457 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 15:13:46,462 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 15:13:46,463 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 03:13:44" (1/3) ... [2024-11-09 15:13:46,463 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c9f8b97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:13:46, skipping insertion in model container [2024-11-09 15:13:46,463 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:13:45" (2/3) ... [2024-11-09 15:13:46,464 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c9f8b97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:13:46, skipping insertion in model container [2024-11-09 15:13:46,465 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:13:46" (3/3) ... [2024-11-09 15:13:46,466 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-3-nl.wvr.c [2024-11-09 15:13:46,486 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 15:13:46,486 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2024-11-09 15:13:46,486 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 15:13:46,562 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-09 15:13:46,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 70 transitions, 161 flow [2024-11-09 15:13:46,647 INFO L124 PetriNetUnfolderBase]: 7/67 cut-off events. [2024-11-09 15:13:46,647 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-09 15:13:46,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 67 events. 7/67 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 209 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2024-11-09 15:13:46,652 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 70 transitions, 161 flow [2024-11-09 15:13:46,656 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 65 transitions, 145 flow [2024-11-09 15:13:46,669 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 15:13:46,679 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;@3efa6f8b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 15:13:46,680 INFO L334 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2024-11-09 15:13:46,685 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 15:13:46,685 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-09 15:13:46,685 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 15:13:46,686 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:46,687 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 15:13:46,687 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-09 15:13:46,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:46,693 INFO L85 PathProgramCache]: Analyzing trace with hash 807773, now seen corresponding path program 1 times [2024-11-09 15:13:46,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:46,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358473690] [2024-11-09 15:13:46,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:46,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:46,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:47,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:47,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:47,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358473690] [2024-11-09 15:13:47,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358473690] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:13:47,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:13:47,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:13:47,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22792399] [2024-11-09 15:13:47,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:13:47,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:13:47,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:47,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:13:47,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:13:47,113 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 70 [2024-11-09 15:13:47,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 65 transitions, 145 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:13:47,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:47,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 70 [2024-11-09 15:13:47,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:47,839 INFO L124 PetriNetUnfolderBase]: 2450/4269 cut-off events. [2024-11-09 15:13:47,840 INFO L125 PetriNetUnfolderBase]: For 151/151 co-relation queries the response was YES. [2024-11-09 15:13:47,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7873 conditions, 4269 events. 2450/4269 cut-off events. For 151/151 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 28756 event pairs, 2170 based on Foata normal form. 287/3395 useless extension candidates. Maximal degree in co-relation 7490. Up to 3377 conditions per place. [2024-11-09 15:13:47,875 INFO L140 encePairwiseOnDemand]: 52/70 looper letters, 39 selfloop transitions, 7 changer transitions 0/64 dead transitions. [2024-11-09 15:13:47,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 64 transitions, 235 flow [2024-11-09 15:13:47,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:13:47,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:13:47,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 141 transitions. [2024-11-09 15:13:47,887 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5035714285714286 [2024-11-09 15:13:47,889 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 145 flow. Second operand 4 states and 141 transitions. [2024-11-09 15:13:47,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 64 transitions, 235 flow [2024-11-09 15:13:47,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 64 transitions, 226 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-09 15:13:47,907 INFO L231 Difference]: Finished difference. Result has 64 places, 64 transitions, 182 flow [2024-11-09 15:13:47,909 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=182, PETRI_PLACES=64, PETRI_TRANSITIONS=64} [2024-11-09 15:13:47,913 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, -4 predicate places. [2024-11-09 15:13:47,915 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 64 transitions, 182 flow [2024-11-09 15:13:47,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:13:47,915 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:47,915 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-09 15:13:47,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 15:13:47,916 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-09 15:13:47,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:47,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1704600769, now seen corresponding path program 1 times [2024-11-09 15:13:47,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:47,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139323589] [2024-11-09 15:13:47,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:47,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:47,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:48,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:48,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:48,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139323589] [2024-11-09 15:13:48,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139323589] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:13:48,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210653681] [2024-11-09 15:13:48,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:48,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:13:48,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:13:48,124 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) [2024-11-09 15:13:48,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 15:13:48,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:48,228 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:13:48,232 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:13:48,290 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:48,291 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:13:48,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210653681] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:13:48,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:13:48,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-09 15:13:48,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560921710] [2024-11-09 15:13:48,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:13:48,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 15:13:48,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:48,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 15:13:48,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 15:13:48,324 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 70 [2024-11-09 15:13:48,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 64 transitions, 182 flow. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 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) [2024-11-09 15:13:48,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:48,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 70 [2024-11-09 15:13:48,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:48,895 INFO L124 PetriNetUnfolderBase]: 2450/4267 cut-off events. [2024-11-09 15:13:48,895 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-11-09 15:13:48,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7827 conditions, 4267 events. 2450/4267 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 28746 event pairs, 2170 based on Foata normal form. 2/3111 useless extension candidates. Maximal degree in co-relation 7777. Up to 3367 conditions per place. [2024-11-09 15:13:48,931 INFO L140 encePairwiseOnDemand]: 61/70 looper letters, 32 selfloop transitions, 12 changer transitions 0/62 dead transitions. [2024-11-09 15:13:48,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 62 transitions, 262 flow [2024-11-09 15:13:48,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:13:48,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:13:48,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 172 transitions. [2024-11-09 15:13:48,933 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4095238095238095 [2024-11-09 15:13:48,933 INFO L175 Difference]: Start difference. First operand has 64 places, 64 transitions, 182 flow. Second operand 6 states and 172 transitions. [2024-11-09 15:13:48,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 62 transitions, 262 flow [2024-11-09 15:13:48,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 62 transitions, 262 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 15:13:48,936 INFO L231 Difference]: Finished difference. Result has 67 places, 62 transitions, 198 flow [2024-11-09 15:13:48,936 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=198, PETRI_PLACES=67, PETRI_TRANSITIONS=62} [2024-11-09 15:13:48,937 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, -1 predicate places. [2024-11-09 15:13:48,937 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 62 transitions, 198 flow [2024-11-09 15:13:48,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 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) [2024-11-09 15:13:48,937 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:48,937 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-09 15:13:48,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 15:13:49,152 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 [2024-11-09 15:13:49,154 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-09 15:13:49,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:49,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1303015442, now seen corresponding path program 1 times [2024-11-09 15:13:49,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:49,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792948382] [2024-11-09 15:13:49,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:49,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:49,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:49,240 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:49,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:49,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792948382] [2024-11-09 15:13:49,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792948382] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:13:49,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624930516] [2024-11-09 15:13:49,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:49,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:13:49,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:13:49,244 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) [2024-11-09 15:13:49,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 15:13:49,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:49,325 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:13:49,326 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:13:49,354 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:49,354 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:13:49,398 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:49,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624930516] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:13:49,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:13:49,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-09 15:13:49,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536246624] [2024-11-09 15:13:49,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:13:49,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 15:13:49,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:49,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 15:13:49,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-09 15:13:49,432 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 70 [2024-11-09 15:13:49,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 62 transitions, 198 flow. Second operand has 12 states, 12 states have (on average 22.083333333333332) internal successors, (265), 12 states have internal predecessors, (265), 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) [2024-11-09 15:13:49,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:49,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 70 [2024-11-09 15:13:49,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:49,998 INFO L124 PetriNetUnfolderBase]: 2456/4291 cut-off events. [2024-11-09 15:13:49,999 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2024-11-09 15:13:50,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7921 conditions, 4291 events. 2456/4291 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 28994 event pairs, 2170 based on Foata normal form. 6/3138 useless extension candidates. Maximal degree in co-relation 7779. Up to 3378 conditions per place. [2024-11-09 15:13:50,026 INFO L140 encePairwiseOnDemand]: 61/70 looper letters, 37 selfloop transitions, 25 changer transitions 0/80 dead transitions. [2024-11-09 15:13:50,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 80 transitions, 436 flow [2024-11-09 15:13:50,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 15:13:50,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 15:13:50,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 278 transitions. [2024-11-09 15:13:50,029 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39714285714285713 [2024-11-09 15:13:50,029 INFO L175 Difference]: Start difference. First operand has 67 places, 62 transitions, 198 flow. Second operand 10 states and 278 transitions. [2024-11-09 15:13:50,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 80 transitions, 436 flow [2024-11-09 15:13:50,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 80 transitions, 378 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-09 15:13:50,032 INFO L231 Difference]: Finished difference. Result has 74 places, 80 transitions, 338 flow [2024-11-09 15:13:50,033 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=338, PETRI_PLACES=74, PETRI_TRANSITIONS=80} [2024-11-09 15:13:50,033 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 6 predicate places. [2024-11-09 15:13:50,034 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 80 transitions, 338 flow [2024-11-09 15:13:50,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 22.083333333333332) internal successors, (265), 12 states have internal predecessors, (265), 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) [2024-11-09 15:13:50,034 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:50,034 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:13:50,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 15:13:50,238 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 [2024-11-09 15:13:50,239 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-09 15:13:50,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:50,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1274722415, now seen corresponding path program 1 times [2024-11-09 15:13:50,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:50,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055914207] [2024-11-09 15:13:50,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:50,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:50,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:50,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:50,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:50,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055914207] [2024-11-09 15:13:50,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055914207] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:13:50,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:13:50,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:13:50,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514703190] [2024-11-09 15:13:50,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:13:50,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:13:50,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:50,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:13:50,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:13:50,353 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 70 [2024-11-09 15:13:50,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 80 transitions, 338 flow. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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) [2024-11-09 15:13:50,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:50,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 70 [2024-11-09 15:13:50,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:50,773 INFO L124 PetriNetUnfolderBase]: 2593/4569 cut-off events. [2024-11-09 15:13:50,773 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2024-11-09 15:13:50,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8495 conditions, 4569 events. 2593/4569 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 30790 event pairs, 2297 based on Foata normal form. 98/3549 useless extension candidates. Maximal degree in co-relation 8399. Up to 3393 conditions per place. [2024-11-09 15:13:50,805 INFO L140 encePairwiseOnDemand]: 61/70 looper letters, 85 selfloop transitions, 3 changer transitions 1/109 dead transitions. [2024-11-09 15:13:50,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 109 transitions, 651 flow [2024-11-09 15:13:50,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:13:50,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:13:50,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 162 transitions. [2024-11-09 15:13:50,807 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5785714285714286 [2024-11-09 15:13:50,807 INFO L175 Difference]: Start difference. First operand has 74 places, 80 transitions, 338 flow. Second operand 4 states and 162 transitions. [2024-11-09 15:13:50,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 109 transitions, 651 flow [2024-11-09 15:13:50,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 109 transitions, 617 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-09 15:13:50,811 INFO L231 Difference]: Finished difference. Result has 76 places, 80 transitions, 333 flow [2024-11-09 15:13:50,811 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=333, PETRI_PLACES=76, PETRI_TRANSITIONS=80} [2024-11-09 15:13:50,812 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 8 predicate places. [2024-11-09 15:13:50,812 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 80 transitions, 333 flow [2024-11-09 15:13:50,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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) [2024-11-09 15:13:50,813 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:50,813 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:13:50,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 15:13:50,813 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-09 15:13:50,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:50,814 INFO L85 PathProgramCache]: Analyzing trace with hash -189526413, now seen corresponding path program 1 times [2024-11-09 15:13:50,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:50,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125136771] [2024-11-09 15:13:50,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:50,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:50,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:50,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:50,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:50,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125136771] [2024-11-09 15:13:50,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125136771] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:13:50,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907078700] [2024-11-09 15:13:50,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:50,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:13:50,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:13:50,984 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) [2024-11-09 15:13:50,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 15:13:51,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:51,063 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 15:13:51,065 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:13:51,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:13:51,087 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:13:51,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907078700] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:13:51,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:13:51,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-09 15:13:51,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444946578] [2024-11-09 15:13:51,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:13:51,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:13:51,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:51,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:13:51,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 15:13:51,089 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 70 [2024-11-09 15:13:51,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 80 transitions, 333 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2024-11-09 15:13:51,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:51,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 70 [2024-11-09 15:13:51,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:51,377 INFO L124 PetriNetUnfolderBase]: 1818/3329 cut-off events. [2024-11-09 15:13:51,377 INFO L125 PetriNetUnfolderBase]: For 386/386 co-relation queries the response was YES. [2024-11-09 15:13:51,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6444 conditions, 3329 events. 1818/3329 cut-off events. For 386/386 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 21655 event pairs, 1588 based on Foata normal form. 0/2749 useless extension candidates. Maximal degree in co-relation 6350. Up to 2572 conditions per place. [2024-11-09 15:13:51,398 INFO L140 encePairwiseOnDemand]: 66/70 looper letters, 56 selfloop transitions, 1 changer transitions 0/77 dead transitions. [2024-11-09 15:13:51,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 77 transitions, 435 flow [2024-11-09 15:13:51,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:13:51,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:13:51,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 111 transitions. [2024-11-09 15:13:51,400 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5285714285714286 [2024-11-09 15:13:51,400 INFO L175 Difference]: Start difference. First operand has 76 places, 80 transitions, 333 flow. Second operand 3 states and 111 transitions. [2024-11-09 15:13:51,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 77 transitions, 435 flow [2024-11-09 15:13:51,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 77 transitions, 431 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-09 15:13:51,404 INFO L231 Difference]: Finished difference. Result has 74 places, 77 transitions, 319 flow [2024-11-09 15:13:51,405 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=319, PETRI_PLACES=74, PETRI_TRANSITIONS=77} [2024-11-09 15:13:51,406 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 6 predicate places. [2024-11-09 15:13:51,407 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 77 transitions, 319 flow [2024-11-09 15:13:51,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2024-11-09 15:13:51,407 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:51,407 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:13:51,425 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 15:13:51,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:13:51,608 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-09 15:13:51,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:51,609 INFO L85 PathProgramCache]: Analyzing trace with hash 2068854914, now seen corresponding path program 1 times [2024-11-09 15:13:51,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:51,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483718068] [2024-11-09 15:13:51,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:51,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:51,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:51,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:51,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:51,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483718068] [2024-11-09 15:13:51,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483718068] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:13:51,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:13:51,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 15:13:51,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563196766] [2024-11-09 15:13:51,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:13:51,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:13:51,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:51,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:13:51,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 15:13:51,688 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 70 [2024-11-09 15:13:51,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 77 transitions, 319 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2024-11-09 15:13:51,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:51,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 70 [2024-11-09 15:13:51,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:51,984 INFO L124 PetriNetUnfolderBase]: 1664/3063 cut-off events. [2024-11-09 15:13:51,984 INFO L125 PetriNetUnfolderBase]: For 431/431 co-relation queries the response was YES. [2024-11-09 15:13:51,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6063 conditions, 3063 events. 1664/3063 cut-off events. For 431/431 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 18782 event pairs, 584 based on Foata normal form. 54/2642 useless extension candidates. Maximal degree in co-relation 6048. Up to 1751 conditions per place. [2024-11-09 15:13:52,002 INFO L140 encePairwiseOnDemand]: 66/70 looper letters, 70 selfloop transitions, 2 changer transitions 0/92 dead transitions. [2024-11-09 15:13:52,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 92 transitions, 502 flow [2024-11-09 15:13:52,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:13:52,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:13:52,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 125 transitions. [2024-11-09 15:13:52,004 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2024-11-09 15:13:52,004 INFO L175 Difference]: Start difference. First operand has 74 places, 77 transitions, 319 flow. Second operand 3 states and 125 transitions. [2024-11-09 15:13:52,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 92 transitions, 502 flow [2024-11-09 15:13:52,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 92 transitions, 493 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 15:13:52,010 INFO L231 Difference]: Finished difference. Result has 75 places, 78 transitions, 324 flow [2024-11-09 15:13:52,010 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=324, PETRI_PLACES=75, PETRI_TRANSITIONS=78} [2024-11-09 15:13:52,011 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 7 predicate places. [2024-11-09 15:13:52,012 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 78 transitions, 324 flow [2024-11-09 15:13:52,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2024-11-09 15:13:52,012 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:52,012 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:13:52,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 15:13:52,013 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-09 15:13:52,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:52,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1746229002, now seen corresponding path program 1 times [2024-11-09 15:13:52,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:52,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239910907] [2024-11-09 15:13:52,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:52,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:52,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:52,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:13:52,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:52,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239910907] [2024-11-09 15:13:52,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239910907] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:13:52,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:13:52,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:13:52,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667156553] [2024-11-09 15:13:52,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:13:52,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:13:52,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:52,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:13:52,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:13:52,092 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 70 [2024-11-09 15:13:52,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 78 transitions, 324 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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) [2024-11-09 15:13:52,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:52,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 70 [2024-11-09 15:13:52,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:52,627 INFO L124 PetriNetUnfolderBase]: 2845/5014 cut-off events. [2024-11-09 15:13:52,627 INFO L125 PetriNetUnfolderBase]: For 884/884 co-relation queries the response was YES. [2024-11-09 15:13:52,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10502 conditions, 5014 events. 2845/5014 cut-off events. For 884/884 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 32143 event pairs, 1762 based on Foata normal form. 96/4604 useless extension candidates. Maximal degree in co-relation 10486. Up to 3069 conditions per place. [2024-11-09 15:13:52,659 INFO L140 encePairwiseOnDemand]: 64/70 looper letters, 94 selfloop transitions, 4 changer transitions 0/116 dead transitions. [2024-11-09 15:13:52,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 116 transitions, 626 flow [2024-11-09 15:13:52,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:13:52,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:13:52,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 165 transitions. [2024-11-09 15:13:52,661 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5892857142857143 [2024-11-09 15:13:52,661 INFO L175 Difference]: Start difference. First operand has 75 places, 78 transitions, 324 flow. Second operand 4 states and 165 transitions. [2024-11-09 15:13:52,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 116 transitions, 626 flow [2024-11-09 15:13:52,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 116 transitions, 622 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:13:52,665 INFO L231 Difference]: Finished difference. Result has 79 places, 81 transitions, 351 flow [2024-11-09 15:13:52,665 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=351, PETRI_PLACES=79, PETRI_TRANSITIONS=81} [2024-11-09 15:13:52,666 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 11 predicate places. [2024-11-09 15:13:52,666 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 81 transitions, 351 flow [2024-11-09 15:13:52,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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) [2024-11-09 15:13:52,667 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:52,667 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:13:52,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 15:13:52,667 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-09 15:13:52,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:52,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1200309641, now seen corresponding path program 1 times [2024-11-09 15:13:52,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:52,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252409535] [2024-11-09 15:13:52,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:52,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:52,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:52,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:13:52,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:52,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252409535] [2024-11-09 15:13:52,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252409535] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:13:52,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:13:52,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:13:52,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093171970] [2024-11-09 15:13:52,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:13:52,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:13:52,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:52,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:13:52,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 15:13:52,740 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 70 [2024-11-09 15:13:52,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 81 transitions, 351 flow. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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) [2024-11-09 15:13:52,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:52,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 70 [2024-11-09 15:13:52,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:53,035 INFO L124 PetriNetUnfolderBase]: 1973/3727 cut-off events. [2024-11-09 15:13:53,035 INFO L125 PetriNetUnfolderBase]: For 1305/1365 co-relation queries the response was YES. [2024-11-09 15:13:53,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8438 conditions, 3727 events. 1973/3727 cut-off events. For 1305/1365 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 23908 event pairs, 896 based on Foata normal form. 15/3376 useless extension candidates. Maximal degree in co-relation 8420. Up to 2593 conditions per place. [2024-11-09 15:13:53,064 INFO L140 encePairwiseOnDemand]: 66/70 looper letters, 67 selfloop transitions, 3 changer transitions 0/90 dead transitions. [2024-11-09 15:13:53,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 90 transitions, 516 flow [2024-11-09 15:13:53,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:13:53,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:13:53,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2024-11-09 15:13:53,066 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2024-11-09 15:13:53,066 INFO L175 Difference]: Start difference. First operand has 79 places, 81 transitions, 351 flow. Second operand 3 states and 119 transitions. [2024-11-09 15:13:53,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 90 transitions, 516 flow [2024-11-09 15:13:53,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 90 transitions, 513 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:13:53,070 INFO L231 Difference]: Finished difference. Result has 81 places, 83 transitions, 371 flow [2024-11-09 15:13:53,070 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=371, PETRI_PLACES=81, PETRI_TRANSITIONS=83} [2024-11-09 15:13:53,071 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 13 predicate places. [2024-11-09 15:13:53,071 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 83 transitions, 371 flow [2024-11-09 15:13:53,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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) [2024-11-09 15:13:53,072 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:53,072 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:13:53,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 15:13:53,072 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-09 15:13:53,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:53,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1714169520, now seen corresponding path program 1 times [2024-11-09 15:13:53,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:53,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097453778] [2024-11-09 15:13:53,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:53,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:53,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:53,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:13:53,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:53,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097453778] [2024-11-09 15:13:53,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097453778] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:13:53,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:13:53,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:13:53,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503484960] [2024-11-09 15:13:53,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:13:53,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:13:53,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:53,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:13:53,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:13:53,155 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 70 [2024-11-09 15:13:53,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 83 transitions, 371 flow. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 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) [2024-11-09 15:13:53,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:53,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 70 [2024-11-09 15:13:53,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:53,529 INFO L124 PetriNetUnfolderBase]: 2356/4430 cut-off events. [2024-11-09 15:13:53,530 INFO L125 PetriNetUnfolderBase]: For 2443/2583 co-relation queries the response was YES. [2024-11-09 15:13:53,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10566 conditions, 4430 events. 2356/4430 cut-off events. For 2443/2583 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 28146 event pairs, 1909 based on Foata normal form. 100/4169 useless extension candidates. Maximal degree in co-relation 10546. Up to 2808 conditions per place. [2024-11-09 15:13:53,568 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 72 selfloop transitions, 7 changer transitions 6/105 dead transitions. [2024-11-09 15:13:53,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 105 transitions, 628 flow [2024-11-09 15:13:53,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:13:53,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:13:53,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 155 transitions. [2024-11-09 15:13:53,570 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5535714285714286 [2024-11-09 15:13:53,570 INFO L175 Difference]: Start difference. First operand has 81 places, 83 transitions, 371 flow. Second operand 4 states and 155 transitions. [2024-11-09 15:13:53,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 105 transitions, 628 flow [2024-11-09 15:13:53,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 105 transitions, 611 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-09 15:13:53,576 INFO L231 Difference]: Finished difference. Result has 84 places, 83 transitions, 381 flow [2024-11-09 15:13:53,577 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=381, PETRI_PLACES=84, PETRI_TRANSITIONS=83} [2024-11-09 15:13:53,578 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 16 predicate places. [2024-11-09 15:13:53,579 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 83 transitions, 381 flow [2024-11-09 15:13:53,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 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) [2024-11-09 15:13:53,580 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:53,580 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-09 15:13:53,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 15:13:53,580 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-09 15:13:53,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:53,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1900093968, now seen corresponding path program 2 times [2024-11-09 15:13:53,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:53,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853593882] [2024-11-09 15:13:53,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:53,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:53,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:53,735 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:53,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:53,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853593882] [2024-11-09 15:13:53,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853593882] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:13:53,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331628006] [2024-11-09 15:13:53,736 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 15:13:53,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:13:53,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:13:53,738 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) [2024-11-09 15:13:53,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 15:13:53,806 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 15:13:53,807 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:13:53,808 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 15:13:53,810 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:13:53,868 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 15:13:53,868 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:13:53,903 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 15:13:53,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331628006] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:13:53,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:13:53,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-09 15:13:53,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090891507] [2024-11-09 15:13:53,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:13:53,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 15:13:53,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:53,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 15:13:53,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-09 15:13:53,932 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 70 [2024-11-09 15:13:53,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 83 transitions, 381 flow. Second operand has 14 states, 14 states have (on average 22.142857142857142) internal successors, (310), 14 states have internal predecessors, (310), 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) [2024-11-09 15:13:53,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:53,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 70 [2024-11-09 15:13:53,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:54,568 INFO L124 PetriNetUnfolderBase]: 2359/4453 cut-off events. [2024-11-09 15:13:54,569 INFO L125 PetriNetUnfolderBase]: For 1873/2013 co-relation queries the response was YES. [2024-11-09 15:13:54,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10337 conditions, 4453 events. 2359/4453 cut-off events. For 1873/2013 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 28520 event pairs, 1909 based on Foata normal form. 4/4093 useless extension candidates. Maximal degree in co-relation 10316. Up to 3426 conditions per place. [2024-11-09 15:13:54,615 INFO L140 encePairwiseOnDemand]: 61/70 looper letters, 36 selfloop transitions, 34 changer transitions 0/88 dead transitions. [2024-11-09 15:13:54,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 88 transitions, 551 flow [2024-11-09 15:13:54,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 15:13:54,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-09 15:13:54,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 571 transitions. [2024-11-09 15:13:54,618 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3398809523809524 [2024-11-09 15:13:54,618 INFO L175 Difference]: Start difference. First operand has 84 places, 83 transitions, 381 flow. Second operand 24 states and 571 transitions. [2024-11-09 15:13:54,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 88 transitions, 551 flow [2024-11-09 15:13:54,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 88 transitions, 544 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:13:54,625 INFO L231 Difference]: Finished difference. Result has 107 places, 88 transitions, 485 flow [2024-11-09 15:13:54,625 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=485, PETRI_PLACES=107, PETRI_TRANSITIONS=88} [2024-11-09 15:13:54,626 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 39 predicate places. [2024-11-09 15:13:54,626 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 88 transitions, 485 flow [2024-11-09 15:13:54,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 22.142857142857142) internal successors, (310), 14 states have internal predecessors, (310), 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) [2024-11-09 15:13:54,627 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:54,627 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:13:54,646 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 15:13:54,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:13:54,831 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-09 15:13:54,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:54,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1297551664, now seen corresponding path program 1 times [2024-11-09 15:13:54,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:54,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611020523] [2024-11-09 15:13:54,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:54,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:54,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:54,999 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:55,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:55,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611020523] [2024-11-09 15:13:55,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611020523] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:13:55,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022265351] [2024-11-09 15:13:55,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:55,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:13:55,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:13:55,002 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) [2024-11-09 15:13:55,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 15:13:55,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:55,082 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 15:13:55,084 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:13:55,174 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:55,174 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:13:55,299 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:55,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022265351] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:13:55,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:13:55,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-09 15:13:55,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099300968] [2024-11-09 15:13:55,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:13:55,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 15:13:55,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:55,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 15:13:55,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-09 15:13:55,352 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 70 [2024-11-09 15:13:55,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 88 transitions, 485 flow. Second operand has 15 states, 15 states have (on average 22.866666666666667) internal successors, (343), 15 states have internal predecessors, (343), 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) [2024-11-09 15:13:55,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:55,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 70 [2024-11-09 15:13:55,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:56,245 INFO L124 PetriNetUnfolderBase]: 3877/7370 cut-off events. [2024-11-09 15:13:56,245 INFO L125 PetriNetUnfolderBase]: For 3321/3461 co-relation queries the response was YES. [2024-11-09 15:13:56,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17089 conditions, 7370 events. 3877/7370 cut-off events. For 3321/3461 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 53088 event pairs, 2603 based on Foata normal form. 232/6969 useless extension candidates. Maximal degree in co-relation 17065. Up to 3249 conditions per place. [2024-11-09 15:13:56,298 INFO L140 encePairwiseOnDemand]: 61/70 looper letters, 105 selfloop transitions, 31 changer transitions 17/171 dead transitions. [2024-11-09 15:13:56,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 171 transitions, 1266 flow [2024-11-09 15:13:56,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 15:13:56,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-09 15:13:56,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 352 transitions. [2024-11-09 15:13:56,300 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41904761904761906 [2024-11-09 15:13:56,300 INFO L175 Difference]: Start difference. First operand has 107 places, 88 transitions, 485 flow. Second operand 12 states and 352 transitions. [2024-11-09 15:13:56,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 171 transitions, 1266 flow [2024-11-09 15:13:56,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 171 transitions, 1096 flow, removed 18 selfloop flow, removed 12 redundant places. [2024-11-09 15:13:56,309 INFO L231 Difference]: Finished difference. Result has 112 places, 105 transitions, 651 flow [2024-11-09 15:13:56,309 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=651, PETRI_PLACES=112, PETRI_TRANSITIONS=105} [2024-11-09 15:13:56,310 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 44 predicate places. [2024-11-09 15:13:56,310 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 105 transitions, 651 flow [2024-11-09 15:13:56,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 22.866666666666667) internal successors, (343), 15 states have internal predecessors, (343), 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) [2024-11-09 15:13:56,311 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:56,311 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:13:56,328 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 15:13:56,511 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,SelfDestructingSolverStorable10 [2024-11-09 15:13:56,512 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-09 15:13:56,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:56,512 INFO L85 PathProgramCache]: Analyzing trace with hash -932144561, now seen corresponding path program 1 times [2024-11-09 15:13:56,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:56,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545306141] [2024-11-09 15:13:56,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:56,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:56,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:56,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:13:56,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:56,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545306141] [2024-11-09 15:13:56,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545306141] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:13:56,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488709597] [2024-11-09 15:13:56,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:56,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:13:56,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:13:56,634 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) [2024-11-09 15:13:56,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 15:13:56,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:56,722 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 15:13:56,723 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:13:56,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:13:56,758 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:13:56,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488709597] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:13:56,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:13:56,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2024-11-09 15:13:56,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030336411] [2024-11-09 15:13:56,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:13:56,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:13:56,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:56,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:13:56,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 15:13:56,760 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 70 [2024-11-09 15:13:56,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 105 transitions, 651 flow. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2024-11-09 15:13:56,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:56,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 70 [2024-11-09 15:13:56,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:57,148 INFO L124 PetriNetUnfolderBase]: 2913/5811 cut-off events. [2024-11-09 15:13:57,148 INFO L125 PetriNetUnfolderBase]: For 3634/3718 co-relation queries the response was YES. [2024-11-09 15:13:57,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13497 conditions, 5811 events. 2913/5811 cut-off events. For 3634/3718 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 42516 event pairs, 2421 based on Foata normal form. 266/5633 useless extension candidates. Maximal degree in co-relation 13469. Up to 4362 conditions per place. [2024-11-09 15:13:57,179 INFO L140 encePairwiseOnDemand]: 67/70 looper letters, 83 selfloop transitions, 1 changer transitions 0/103 dead transitions. [2024-11-09 15:13:57,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 103 transitions, 811 flow [2024-11-09 15:13:57,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:13:57,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:13:57,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 108 transitions. [2024-11-09 15:13:57,181 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2024-11-09 15:13:57,181 INFO L175 Difference]: Start difference. First operand has 112 places, 105 transitions, 651 flow. Second operand 3 states and 108 transitions. [2024-11-09 15:13:57,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 103 transitions, 811 flow [2024-11-09 15:13:57,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 103 transitions, 799 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-09 15:13:57,189 INFO L231 Difference]: Finished difference. Result has 109 places, 103 transitions, 633 flow [2024-11-09 15:13:57,189 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=631, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=633, PETRI_PLACES=109, PETRI_TRANSITIONS=103} [2024-11-09 15:13:57,189 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 41 predicate places. [2024-11-09 15:13:57,189 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 103 transitions, 633 flow [2024-11-09 15:13:57,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2024-11-09 15:13:57,190 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:57,190 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:13:57,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 15:13:57,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:13:57,391 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-09 15:13:57,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:57,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1621894546, now seen corresponding path program 2 times [2024-11-09 15:13:57,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:57,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929540555] [2024-11-09 15:13:57,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:57,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:57,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:57,460 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 15:13:57,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:57,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929540555] [2024-11-09 15:13:57,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929540555] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:13:57,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014121619] [2024-11-09 15:13:57,461 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 15:13:57,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:13:57,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:13:57,463 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) [2024-11-09 15:13:57,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 15:13:57,558 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 15:13:57,559 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:13:57,560 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 15:13:57,561 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:13:57,594 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 15:13:57,594 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:13:57,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014121619] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:13:57,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:13:57,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-09 15:13:57,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92091528] [2024-11-09 15:13:57,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:13:57,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 15:13:57,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:57,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 15:13:57,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-09 15:13:57,604 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 70 [2024-11-09 15:13:57,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 103 transitions, 633 flow. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 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) [2024-11-09 15:13:57,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:57,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 70 [2024-11-09 15:13:57,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:58,084 INFO L124 PetriNetUnfolderBase]: 3599/6531 cut-off events. [2024-11-09 15:13:58,084 INFO L125 PetriNetUnfolderBase]: For 3050/3050 co-relation queries the response was YES. [2024-11-09 15:13:58,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15544 conditions, 6531 events. 3599/6531 cut-off events. For 3050/3050 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 44691 event pairs, 1251 based on Foata normal form. 88/6177 useless extension candidates. Maximal degree in co-relation 15515. Up to 2097 conditions per place. [2024-11-09 15:13:58,135 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 109 selfloop transitions, 7 changer transitions 0/132 dead transitions. [2024-11-09 15:13:58,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 132 transitions, 947 flow [2024-11-09 15:13:58,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:13:58,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:13:58,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 150 transitions. [2024-11-09 15:13:58,136 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-11-09 15:13:58,136 INFO L175 Difference]: Start difference. First operand has 109 places, 103 transitions, 633 flow. Second operand 4 states and 150 transitions. [2024-11-09 15:13:58,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 132 transitions, 947 flow [2024-11-09 15:13:58,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 132 transitions, 946 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:13:58,148 INFO L231 Difference]: Finished difference. Result has 110 places, 102 transitions, 642 flow [2024-11-09 15:13:58,149 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=642, PETRI_PLACES=110, PETRI_TRANSITIONS=102} [2024-11-09 15:13:58,149 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 42 predicate places. [2024-11-09 15:13:58,149 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 102 transitions, 642 flow [2024-11-09 15:13:58,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 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) [2024-11-09 15:13:58,150 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:58,150 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1] [2024-11-09 15:13:58,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-09 15:13:58,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:13:58,351 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-09 15:13:58,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:58,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1255992720, now seen corresponding path program 1 times [2024-11-09 15:13:58,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:58,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249119666] [2024-11-09 15:13:58,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:58,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:58,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:58,558 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:58,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:58,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249119666] [2024-11-09 15:13:58,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249119666] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:13:58,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480421929] [2024-11-09 15:13:58,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:58,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:13:58,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:13:58,561 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) [2024-11-09 15:13:58,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 15:13:58,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:58,648 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 15:13:58,649 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:13:58,693 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:58,693 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:13:58,883 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:58,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480421929] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:13:58,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:13:58,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2024-11-09 15:13:58,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583260716] [2024-11-09 15:13:58,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:13:58,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-09 15:13:58,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:58,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-09 15:13:58,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2024-11-09 15:13:58,934 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 70 [2024-11-09 15:13:58,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 102 transitions, 642 flow. Second operand has 28 states, 28 states have (on average 22.071428571428573) internal successors, (618), 28 states have internal predecessors, (618), 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) [2024-11-09 15:13:58,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:58,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 70 [2024-11-09 15:13:58,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:59,740 INFO L124 PetriNetUnfolderBase]: 2941/5883 cut-off events. [2024-11-09 15:13:59,741 INFO L125 PetriNetUnfolderBase]: For 5823/5865 co-relation queries the response was YES. [2024-11-09 15:13:59,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14704 conditions, 5883 events. 2941/5883 cut-off events. For 5823/5865 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 43024 event pairs, 2421 based on Foata normal form. 21/5460 useless extension candidates. Maximal degree in co-relation 14675. Up to 4344 conditions per place. [2024-11-09 15:13:59,769 INFO L140 encePairwiseOnDemand]: 62/70 looper letters, 41 selfloop transitions, 100 changer transitions 0/158 dead transitions. [2024-11-09 15:13:59,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 158 transitions, 1470 flow [2024-11-09 15:13:59,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-09 15:13:59,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-09 15:13:59,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 657 transitions. [2024-11-09 15:13:59,771 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.360989010989011 [2024-11-09 15:13:59,771 INFO L175 Difference]: Start difference. First operand has 110 places, 102 transitions, 642 flow. Second operand 26 states and 657 transitions. [2024-11-09 15:13:59,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 158 transitions, 1470 flow [2024-11-09 15:13:59,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 158 transitions, 1456 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 15:13:59,782 INFO L231 Difference]: Finished difference. Result has 139 places, 158 transitions, 1444 flow [2024-11-09 15:13:59,783 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1444, PETRI_PLACES=139, PETRI_TRANSITIONS=158} [2024-11-09 15:13:59,783 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 71 predicate places. [2024-11-09 15:13:59,783 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 158 transitions, 1444 flow [2024-11-09 15:13:59,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 22.071428571428573) internal successors, (618), 28 states have internal predecessors, (618), 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) [2024-11-09 15:13:59,784 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:59,784 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] [2024-11-09 15:13:59,797 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 15:13:59,986 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,SelfDestructingSolverStorable13 [2024-11-09 15:13:59,986 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-09 15:13:59,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:59,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1829192684, now seen corresponding path program 1 times [2024-11-09 15:13:59,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:59,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747731093] [2024-11-09 15:13:59,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:59,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:00,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:00,583 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:14:00,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:00,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747731093] [2024-11-09 15:14:00,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747731093] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:14:00,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001409469] [2024-11-09 15:14:00,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:00,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:00,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:14:00,586 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) [2024-11-09 15:14:00,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 15:14:00,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:00,680 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-09 15:14:00,682 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:14:00,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-09 15:14:01,017 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-09 15:14:01,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2024-11-09 15:14:01,045 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:14:01,045 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:14:01,343 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 20 treesize of output 18 [2024-11-09 15:14:01,349 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 26 treesize of output 20 [2024-11-09 15:14:01,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:14:01,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001409469] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:14:01,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:14:01,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 20 [2024-11-09 15:14:01,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250925395] [2024-11-09 15:14:01,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:14:01,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 15:14:01,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:01,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 15:14:01,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2024-11-09 15:14:01,703 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 70 [2024-11-09 15:14:01,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 158 transitions, 1444 flow. Second operand has 21 states, 21 states have (on average 19.142857142857142) internal successors, (402), 21 states have internal predecessors, (402), 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) [2024-11-09 15:14:01,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:01,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 70 [2024-11-09 15:14:01,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:05,243 INFO L124 PetriNetUnfolderBase]: 15047/25831 cut-off events. [2024-11-09 15:14:05,243 INFO L125 PetriNetUnfolderBase]: For 13564/13828 co-relation queries the response was YES. [2024-11-09 15:14:05,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60885 conditions, 25831 events. 15047/25831 cut-off events. For 13564/13828 co-relation queries the response was YES. Maximal size of possible extension queue 1056. Compared 209027 event pairs, 6374 based on Foata normal form. 0/23385 useless extension candidates. Maximal degree in co-relation 60848. Up to 4521 conditions per place. [2024-11-09 15:14:05,521 INFO L140 encePairwiseOnDemand]: 58/70 looper letters, 270 selfloop transitions, 110 changer transitions 8/401 dead transitions. [2024-11-09 15:14:05,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 401 transitions, 3150 flow [2024-11-09 15:14:05,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 15:14:05,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-09 15:14:05,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 548 transitions. [2024-11-09 15:14:05,524 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43492063492063493 [2024-11-09 15:14:05,524 INFO L175 Difference]: Start difference. First operand has 139 places, 158 transitions, 1444 flow. Second operand 18 states and 548 transitions. [2024-11-09 15:14:05,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 401 transitions, 3150 flow [2024-11-09 15:14:05,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 401 transitions, 2859 flow, removed 92 selfloop flow, removed 12 redundant places. [2024-11-09 15:14:05,552 INFO L231 Difference]: Finished difference. Result has 149 places, 173 transitions, 1457 flow [2024-11-09 15:14:05,552 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1153, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1457, PETRI_PLACES=149, PETRI_TRANSITIONS=173} [2024-11-09 15:14:05,553 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 81 predicate places. [2024-11-09 15:14:05,553 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 173 transitions, 1457 flow [2024-11-09 15:14:05,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 19.142857142857142) internal successors, (402), 21 states have internal predecessors, (402), 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) [2024-11-09 15:14:05,554 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:05,554 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:14:05,572 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 15:14:05,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 15:14:05,755 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-09 15:14:05,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:05,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1260875763, now seen corresponding path program 1 times [2024-11-09 15:14:05,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:05,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864943607] [2024-11-09 15:14:05,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:05,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:05,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:05,850 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 15:14:05,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:05,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864943607] [2024-11-09 15:14:05,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864943607] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:14:05,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326941051] [2024-11-09 15:14:05,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:05,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:05,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:14:05,854 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) [2024-11-09 15:14:05,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 15:14:05,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:05,953 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:14:05,954 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:14:05,987 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 15:14:05,987 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:14:06,027 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 15:14:06,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326941051] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:14:06,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:14:06,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-09 15:14:06,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349329377] [2024-11-09 15:14:06,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:14:06,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 15:14:06,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:06,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 15:14:06,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-09 15:14:06,051 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 70 [2024-11-09 15:14:06,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 173 transitions, 1457 flow. Second operand has 12 states, 12 states have (on average 25.0) internal successors, (300), 12 states have internal predecessors, (300), 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) [2024-11-09 15:14:06,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:06,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 70 [2024-11-09 15:14:06,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:09,170 INFO L124 PetriNetUnfolderBase]: 15319/28757 cut-off events. [2024-11-09 15:14:09,170 INFO L125 PetriNetUnfolderBase]: For 27940/28384 co-relation queries the response was YES. [2024-11-09 15:14:09,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74756 conditions, 28757 events. 15319/28757 cut-off events. For 27940/28384 co-relation queries the response was YES. Maximal size of possible extension queue 847. Compared 248194 event pairs, 4660 based on Foata normal form. 0/27473 useless extension candidates. Maximal degree in co-relation 74716. Up to 10594 conditions per place. [2024-11-09 15:14:09,507 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 359 selfloop transitions, 13 changer transitions 0/393 dead transitions. [2024-11-09 15:14:09,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 393 transitions, 3303 flow [2024-11-09 15:14:09,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 15:14:09,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 15:14:09,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 393 transitions. [2024-11-09 15:14:09,508 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5614285714285714 [2024-11-09 15:14:09,509 INFO L175 Difference]: Start difference. First operand has 149 places, 173 transitions, 1457 flow. Second operand 10 states and 393 transitions. [2024-11-09 15:14:09,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 393 transitions, 3303 flow [2024-11-09 15:14:09,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 393 transitions, 3214 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-11-09 15:14:09,676 INFO L231 Difference]: Finished difference. Result has 156 places, 182 transitions, 1496 flow [2024-11-09 15:14:09,677 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1416, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1496, PETRI_PLACES=156, PETRI_TRANSITIONS=182} [2024-11-09 15:14:09,677 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 88 predicate places. [2024-11-09 15:14:09,678 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 182 transitions, 1496 flow [2024-11-09 15:14:09,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 25.0) internal successors, (300), 12 states have internal predecessors, (300), 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) [2024-11-09 15:14:09,678 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:09,678 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:14:09,697 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-09 15:14:09,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-09 15:14:09,883 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-09 15:14:09,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:09,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1400375729, now seen corresponding path program 1 times [2024-11-09 15:14:09,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:09,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238198728] [2024-11-09 15:14:09,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:09,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:09,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:10,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:14:10,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:10,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238198728] [2024-11-09 15:14:10,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238198728] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:14:10,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837759948] [2024-11-09 15:14:10,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:10,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:10,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:14:10,478 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:14:10,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 15:14:10,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:10,566 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 15:14:10,568 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:14:10,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-09 15:14:10,797 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-09 15:14:10,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-11-09 15:14:10,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:14:10,820 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:14:11,078 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 [2024-11-09 15:14:11,081 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 16 [2024-11-09 15:14:11,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:14:11,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837759948] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:14:11,112 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:14:11,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 20 [2024-11-09 15:14:11,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933498668] [2024-11-09 15:14:11,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:14:11,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 15:14:11,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:11,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 15:14:11,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2024-11-09 15:14:11,340 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 70 [2024-11-09 15:14:11,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 182 transitions, 1496 flow. Second operand has 21 states, 21 states have (on average 20.142857142857142) internal successors, (423), 21 states have internal predecessors, (423), 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) [2024-11-09 15:14:11,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:11,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 70 [2024-11-09 15:14:11,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:16,486 INFO L124 PetriNetUnfolderBase]: 20962/36567 cut-off events. [2024-11-09 15:14:16,486 INFO L125 PetriNetUnfolderBase]: For 47721/48095 co-relation queries the response was YES. [2024-11-09 15:14:16,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105013 conditions, 36567 events. 20962/36567 cut-off events. For 47721/48095 co-relation queries the response was YES. Maximal size of possible extension queue 1033. Compared 302685 event pairs, 10028 based on Foata normal form. 572/36096 useless extension candidates. Maximal degree in co-relation 104970. Up to 7425 conditions per place. [2024-11-09 15:14:16,965 INFO L140 encePairwiseOnDemand]: 58/70 looper letters, 370 selfloop transitions, 108 changer transitions 11/507 dead transitions. [2024-11-09 15:14:16,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 507 transitions, 4176 flow [2024-11-09 15:14:16,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 15:14:16,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-09 15:14:16,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 559 transitions. [2024-11-09 15:14:16,967 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44365079365079363 [2024-11-09 15:14:16,967 INFO L175 Difference]: Start difference. First operand has 156 places, 182 transitions, 1496 flow. Second operand 18 states and 559 transitions. [2024-11-09 15:14:16,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 507 transitions, 4176 flow [2024-11-09 15:14:17,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 507 transitions, 3840 flow, removed 132 selfloop flow, removed 3 redundant places. [2024-11-09 15:14:17,196 INFO L231 Difference]: Finished difference. Result has 172 places, 184 transitions, 1703 flow [2024-11-09 15:14:17,197 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1466, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1703, PETRI_PLACES=172, PETRI_TRANSITIONS=184} [2024-11-09 15:14:17,197 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 104 predicate places. [2024-11-09 15:14:17,198 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 184 transitions, 1703 flow [2024-11-09 15:14:17,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 20.142857142857142) internal successors, (423), 21 states have internal predecessors, (423), 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) [2024-11-09 15:14:17,198 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:17,198 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, 1] [2024-11-09 15:14:17,216 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-09 15:14:17,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-09 15:14:17,403 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-09 15:14:17,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:17,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1403960753, now seen corresponding path program 1 times [2024-11-09 15:14:17,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:17,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901165807] [2024-11-09 15:14:17,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:17,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:17,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:17,898 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:14:17,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:17,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901165807] [2024-11-09 15:14:17,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901165807] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:14:17,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628273310] [2024-11-09 15:14:17,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:17,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:17,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:14:17,901 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:14:17,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 15:14:17,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:18,003 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 15:14:18,005 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:14:18,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-09 15:14:18,312 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 [2024-11-09 15:14:18,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:14:18,326 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:14:18,813 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 20 treesize of output 18 [2024-11-09 15:14:18,819 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 26 treesize of output 20 [2024-11-09 15:14:18,874 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:14:18,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628273310] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:14:18,875 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:14:18,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 23 [2024-11-09 15:14:18,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513161007] [2024-11-09 15:14:18,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:14:18,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-09 15:14:18,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:18,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-09 15:14:18,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=473, Unknown=0, NotChecked=0, Total=552 [2024-11-09 15:14:19,051 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 70 [2024-11-09 15:14:19,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 184 transitions, 1703 flow. Second operand has 24 states, 24 states have (on average 19.375) internal successors, (465), 24 states have internal predecessors, (465), 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) [2024-11-09 15:14:19,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:19,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 70 [2024-11-09 15:14:19,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:28,764 INFO L124 PetriNetUnfolderBase]: 37724/64828 cut-off events. [2024-11-09 15:14:28,765 INFO L125 PetriNetUnfolderBase]: For 94482/96248 co-relation queries the response was YES. [2024-11-09 15:14:29,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185791 conditions, 64828 events. 37724/64828 cut-off events. For 94482/96248 co-relation queries the response was YES. Maximal size of possible extension queue 1701. Compared 567504 event pairs, 6528 based on Foata normal form. 96/60806 useless extension candidates. Maximal degree in co-relation 185746. Up to 11397 conditions per place. [2024-11-09 15:14:29,927 INFO L140 encePairwiseOnDemand]: 57/70 looper letters, 563 selfloop transitions, 135 changer transitions 22/739 dead transitions. [2024-11-09 15:14:29,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 739 transitions, 5763 flow [2024-11-09 15:14:29,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-09 15:14:29,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-09 15:14:29,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 807 transitions. [2024-11-09 15:14:29,930 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42698412698412697 [2024-11-09 15:14:29,930 INFO L175 Difference]: Start difference. First operand has 172 places, 184 transitions, 1703 flow. Second operand 27 states and 807 transitions. [2024-11-09 15:14:29,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 739 transitions, 5763 flow [2024-11-09 15:14:30,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 739 transitions, 5551 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-11-09 15:14:30,472 INFO L231 Difference]: Finished difference. Result has 195 places, 223 transitions, 2232 flow [2024-11-09 15:14:30,472 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1565, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2232, PETRI_PLACES=195, PETRI_TRANSITIONS=223} [2024-11-09 15:14:30,473 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 127 predicate places. [2024-11-09 15:14:30,473 INFO L471 AbstractCegarLoop]: Abstraction has has 195 places, 223 transitions, 2232 flow [2024-11-09 15:14:30,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 19.375) internal successors, (465), 24 states have internal predecessors, (465), 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) [2024-11-09 15:14:30,473 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:30,473 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:14:30,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-09 15:14:30,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 15:14:30,674 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-09 15:14:30,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:30,674 INFO L85 PathProgramCache]: Analyzing trace with hash 2111293468, now seen corresponding path program 1 times [2024-11-09 15:14:30,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:30,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038728055] [2024-11-09 15:14:30,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:30,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:30,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:31,358 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 15:14:31,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:31,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038728055] [2024-11-09 15:14:31,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038728055] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:14:31,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104150476] [2024-11-09 15:14:31,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:31,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:31,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:14:31,362 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:14:31,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 15:14:31,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:31,460 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-09 15:14:31,463 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:14:31,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-09 15:14:31,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-09 15:14:31,562 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 15:14:31,562 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-09 15:14:31,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-09 15:14:31,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-09 15:14:31,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-09 15:14:31,809 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 15:14:31,810 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:14:32,581 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 15:14:32,582 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 44 [2024-11-09 15:14:32,593 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-09 15:14:32,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 53 [2024-11-09 15:14:32,606 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-09 15:14:32,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 28 [2024-11-09 15:14:32,679 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 15:14:32,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104150476] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:14:32,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:14:32,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2024-11-09 15:14:32,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968627213] [2024-11-09 15:14:32,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:14:32,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-09 15:14:32,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:32,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-09 15:14:32,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=552, Unknown=1, NotChecked=0, Total=650 [2024-11-09 15:14:32,857 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 70 [2024-11-09 15:14:32,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 223 transitions, 2232 flow. Second operand has 26 states, 26 states have (on average 16.423076923076923) internal successors, (427), 26 states have internal predecessors, (427), 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) [2024-11-09 15:14:32,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:32,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 70 [2024-11-09 15:14:32,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:44,614 INFO L124 PetriNetUnfolderBase]: 49298/81605 cut-off events. [2024-11-09 15:14:44,614 INFO L125 PetriNetUnfolderBase]: For 144679/145656 co-relation queries the response was YES. [2024-11-09 15:14:45,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255446 conditions, 81605 events. 49298/81605 cut-off events. For 144679/145656 co-relation queries the response was YES. Maximal size of possible extension queue 2033. Compared 691828 event pairs, 21754 based on Foata normal form. 418/78916 useless extension candidates. Maximal degree in co-relation 255392. Up to 38403 conditions per place. [2024-11-09 15:14:46,010 INFO L140 encePairwiseOnDemand]: 54/70 looper letters, 488 selfloop transitions, 118 changer transitions 35/654 dead transitions. [2024-11-09 15:14:46,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 654 transitions, 6223 flow [2024-11-09 15:14:46,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-09 15:14:46,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-09 15:14:46,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 653 transitions. [2024-11-09 15:14:46,012 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3216748768472906 [2024-11-09 15:14:46,012 INFO L175 Difference]: Start difference. First operand has 195 places, 223 transitions, 2232 flow. Second operand 29 states and 653 transitions. [2024-11-09 15:14:46,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 654 transitions, 6223 flow [2024-11-09 15:14:48,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 654 transitions, 5881 flow, removed 104 selfloop flow, removed 6 redundant places. [2024-11-09 15:14:48,548 INFO L231 Difference]: Finished difference. Result has 227 places, 273 transitions, 2772 flow [2024-11-09 15:14:48,548 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=2069, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=2772, PETRI_PLACES=227, PETRI_TRANSITIONS=273} [2024-11-09 15:14:48,549 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 159 predicate places. [2024-11-09 15:14:48,549 INFO L471 AbstractCegarLoop]: Abstraction has has 227 places, 273 transitions, 2772 flow [2024-11-09 15:14:48,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 16.423076923076923) internal successors, (427), 26 states have internal predecessors, (427), 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) [2024-11-09 15:14:48,549 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:48,549 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, 1, 1] [2024-11-09 15:14:48,562 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-09 15:14:48,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:48,750 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-09 15:14:48,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:48,750 INFO L85 PathProgramCache]: Analyzing trace with hash 298265733, now seen corresponding path program 1 times [2024-11-09 15:14:48,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:48,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205574671] [2024-11-09 15:14:48,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:48,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:48,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:49,807 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:14:49,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:49,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205574671] [2024-11-09 15:14:49,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205574671] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:14:49,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555651503] [2024-11-09 15:14:49,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:49,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:49,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:14:49,810 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:14:49,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 15:14:49,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:49,905 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 15:14:49,906 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:14:49,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-09 15:14:50,273 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 [2024-11-09 15:14:50,296 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:14:50,296 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:14:50,713 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 [2024-11-09 15:14:50,716 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 16 [2024-11-09 15:14:50,759 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:14:50,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555651503] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:14:50,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:14:50,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 28 [2024-11-09 15:14:50,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68006476] [2024-11-09 15:14:50,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:14:50,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-09 15:14:50,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:50,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-09 15:14:50,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=721, Unknown=0, NotChecked=0, Total=812 [2024-11-09 15:14:51,247 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 70 [2024-11-09 15:14:51,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 273 transitions, 2772 flow. Second operand has 29 states, 29 states have (on average 19.06896551724138) internal successors, (553), 29 states have internal predecessors, (553), 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) [2024-11-09 15:14:51,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:51,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 70 [2024-11-09 15:14:51,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand