./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 023d838f 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/chl-chromosome-symm.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 23ca06a4d1d66eab783b29fc3ce31114eee62eb7d17a2452b84e2d73b8d92cfa --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 22:21:07,261 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 22:21:07,322 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-10 22:21:07,326 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 22:21:07,328 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 22:21:07,357 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 22:21:07,359 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 22:21:07,359 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 22:21:07,359 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 22:21:07,360 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 22:21:07,360 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 22:21:07,360 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 22:21:07,361 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 22:21:07,362 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 22:21:07,362 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 22:21:07,363 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 22:21:07,363 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 22:21:07,363 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 22:21:07,363 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 22:21:07,364 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 22:21:07,364 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 22:21:07,365 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 22:21:07,365 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 22:21:07,367 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 22:21:07,367 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 22:21:07,367 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-10 22:21:07,367 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 22:21:07,367 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 22:21:07,374 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 22:21:07,374 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 22:21:07,374 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 22:21:07,375 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 22:21:07,375 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 22:21:07,375 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 22:21:07,375 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:21:07,376 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 22:21:07,376 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 22:21:07,376 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 22:21:07,376 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 22:21:07,376 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 22:21:07,376 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 22:21:07,377 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 22:21:07,377 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 22:21:07,377 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 22:21:07,377 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23ca06a4d1d66eab783b29fc3ce31114eee62eb7d17a2452b84e2d73b8d92cfa [2024-11-10 22:21:07,584 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 22:21:07,615 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 22:21:07,618 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 22:21:07,619 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 22:21:07,619 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 22:21:07,620 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c [2024-11-10 22:21:08,950 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 22:21:09,117 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 22:21:09,117 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c [2024-11-10 22:21:09,124 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d447e09ad/c218ea71f072493b985763188e9e8714/FLAGb0ea742e8 [2024-11-10 22:21:09,136 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d447e09ad/c218ea71f072493b985763188e9e8714 [2024-11-10 22:21:09,139 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 22:21:09,140 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 22:21:09,141 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 22:21:09,141 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 22:21:09,146 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 22:21:09,147 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:21:09" (1/1) ... [2024-11-10 22:21:09,148 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36d7200e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:21:09, skipping insertion in model container [2024-11-10 22:21:09,148 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:21:09" (1/1) ... [2024-11-10 22:21:09,164 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 22:21:09,341 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:21:09,348 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 22:21:09,369 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:21:09,383 INFO L204 MainTranslator]: Completed translation [2024-11-10 22:21:09,383 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:21:09 WrapperNode [2024-11-10 22:21:09,383 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 22:21:09,384 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 22:21:09,384 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 22:21:09,385 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 22:21:09,390 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:21:09" (1/1) ... [2024-11-10 22:21:09,397 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:21:09" (1/1) ... [2024-11-10 22:21:09,424 INFO L138 Inliner]: procedures = 24, calls = 28, calls flagged for inlining = 16, calls inlined = 20, statements flattened = 225 [2024-11-10 22:21:09,425 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 22:21:09,433 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 22:21:09,433 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 22:21:09,433 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 22:21:09,442 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:21:09" (1/1) ... [2024-11-10 22:21:09,442 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:21:09" (1/1) ... [2024-11-10 22:21:09,444 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:21:09" (1/1) ... [2024-11-10 22:21:09,459 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-10 22:21:09,459 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:21:09" (1/1) ... [2024-11-10 22:21:09,460 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:21:09" (1/1) ... [2024-11-10 22:21:09,465 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:21:09" (1/1) ... [2024-11-10 22:21:09,466 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:21:09" (1/1) ... [2024-11-10 22:21:09,468 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:21:09" (1/1) ... [2024-11-10 22:21:09,469 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:21:09" (1/1) ... [2024-11-10 22:21:09,471 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 22:21:09,472 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 22:21:09,472 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 22:21:09,472 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 22:21:09,473 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:21:09" (1/1) ... [2024-11-10 22:21:09,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:21:09,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:21:09,509 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) [2024-11-10 22:21:09,510 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 [2024-11-10 22:21:09,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 22:21:09,544 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 22:21:09,544 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 22:21:09,544 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 22:21:09,544 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 22:21:09,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 22:21:09,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 22:21:09,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 22:21:09,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 22:21:09,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 22:21:09,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 22:21:09,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 22:21:09,545 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 22:21:09,545 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 22:21:09,546 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 22:21:09,629 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 22:21:09,631 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 22:21:09,990 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 22:21:09,991 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 22:21:10,247 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 22:21:10,247 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 22:21:10,248 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:21:10 BoogieIcfgContainer [2024-11-10 22:21:10,248 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 22:21:10,250 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 22:21:10,251 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 22:21:10,254 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 22:21:10,255 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:21:09" (1/3) ... [2024-11-10 22:21:10,255 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b93904e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:21:10, skipping insertion in model container [2024-11-10 22:21:10,256 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:21:09" (2/3) ... [2024-11-10 22:21:10,256 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b93904e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:21:10, skipping insertion in model container [2024-11-10 22:21:10,257 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:21:10" (3/3) ... [2024-11-10 22:21:10,259 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-symm.wvr.c [2024-11-10 22:21:10,274 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 22:21:10,274 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2024-11-10 22:21:10,274 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 22:21:10,339 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-10 22:21:10,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 84 transitions, 182 flow [2024-11-10 22:21:10,408 INFO L124 PetriNetUnfolderBase]: 12/82 cut-off events. [2024-11-10 22:21:10,408 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 22:21:10,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 82 events. 12/82 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 242 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 61. Up to 2 conditions per place. [2024-11-10 22:21:10,413 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 84 transitions, 182 flow [2024-11-10 22:21:10,418 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 80 transitions, 169 flow [2024-11-10 22:21:10,428 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:21:10,435 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;@3c293712, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:21:10,436 INFO L334 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2024-11-10 22:21:10,439 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:21:10,440 INFO L124 PetriNetUnfolderBase]: 2/8 cut-off events. [2024-11-10 22:21:10,440 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:21:10,440 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:21:10,441 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 22:21:10,441 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:21:10,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:21:10,446 INFO L85 PathProgramCache]: Analyzing trace with hash 20208675, now seen corresponding path program 1 times [2024-11-10 22:21:10,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:21:10,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145813111] [2024-11-10 22:21:10,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:21:10,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:21:10,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:21:10,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:21:10,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:21:10,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145813111] [2024-11-10 22:21:10,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145813111] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:21:10,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:21:10,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:21:10,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458953023] [2024-11-10 22:21:10,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:21:10,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:21:10,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:21:10,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:21:10,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:21:10,789 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 84 [2024-11-10 22:21:10,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 80 transitions, 169 flow. Second operand has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 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) [2024-11-10 22:21:10,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:21:10,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 84 [2024-11-10 22:21:10,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:21:11,004 INFO L124 PetriNetUnfolderBase]: 311/685 cut-off events. [2024-11-10 22:21:11,005 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-10 22:21:11,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1211 conditions, 685 events. 311/685 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3962 event pairs, 196 based on Foata normal form. 43/580 useless extension candidates. Maximal degree in co-relation 1108. Up to 489 conditions per place. [2024-11-10 22:21:11,013 INFO L140 encePairwiseOnDemand]: 69/84 looper letters, 33 selfloop transitions, 7 changer transitions 0/82 dead transitions. [2024-11-10 22:21:11,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 82 transitions, 253 flow [2024-11-10 22:21:11,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:21:11,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:21:11,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 226 transitions. [2024-11-10 22:21:11,029 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6726190476190477 [2024-11-10 22:21:11,031 INFO L175 Difference]: Start difference. First operand has 75 places, 80 transitions, 169 flow. Second operand 4 states and 226 transitions. [2024-11-10 22:21:11,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 82 transitions, 253 flow [2024-11-10 22:21:11,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 82 transitions, 248 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:21:11,043 INFO L231 Difference]: Finished difference. Result has 78 places, 82 transitions, 216 flow [2024-11-10 22:21:11,045 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=216, PETRI_PLACES=78, PETRI_TRANSITIONS=82} [2024-11-10 22:21:11,049 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 3 predicate places. [2024-11-10 22:21:11,050 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 82 transitions, 216 flow [2024-11-10 22:21:11,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 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) [2024-11-10 22:21:11,050 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:21:11,050 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-10 22:21:11,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 22:21:11,051 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:21:11,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:21:11,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1519924175, now seen corresponding path program 1 times [2024-11-10 22:21:11,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:21:11,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131058391] [2024-11-10 22:21:11,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:21:11,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:21:11,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:21:11,176 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:21:11,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:21:11,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131058391] [2024-11-10 22:21:11,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131058391] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:21:11,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128663363] [2024-11-10 22:21:11,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:21:11,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:21:11,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:21:11,181 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) [2024-11-10 22:21:11,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 22:21:11,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:21:11,243 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:21:11,246 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:21:11,295 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:21:11,296 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:21:11,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128663363] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:21:11,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:21:11,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-10 22:21:11,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031533581] [2024-11-10 22:21:11,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:21:11,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:21:11,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:21:11,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:21:11,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:21:11,322 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 84 [2024-11-10 22:21:11,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 82 transitions, 216 flow. Second operand has 6 states, 6 states have (on average 44.833333333333336) internal successors, (269), 6 states have internal predecessors, (269), 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) [2024-11-10 22:21:11,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:21:11,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 84 [2024-11-10 22:21:11,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:21:11,503 INFO L124 PetriNetUnfolderBase]: 311/683 cut-off events. [2024-11-10 22:21:11,503 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-11-10 22:21:11,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1220 conditions, 683 events. 311/683 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3905 event pairs, 196 based on Foata normal form. 2/537 useless extension candidates. Maximal degree in co-relation 1166. Up to 479 conditions per place. [2024-11-10 22:21:11,509 INFO L140 encePairwiseOnDemand]: 75/84 looper letters, 26 selfloop transitions, 12 changer transitions 0/80 dead transitions. [2024-11-10 22:21:11,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 80 transitions, 284 flow [2024-11-10 22:21:11,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:21:11,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:21:11,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 304 transitions. [2024-11-10 22:21:11,514 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6031746031746031 [2024-11-10 22:21:11,516 INFO L175 Difference]: Start difference. First operand has 78 places, 82 transitions, 216 flow. Second operand 6 states and 304 transitions. [2024-11-10 22:21:11,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 80 transitions, 284 flow [2024-11-10 22:21:11,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 80 transitions, 284 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 22:21:11,519 INFO L231 Difference]: Finished difference. Result has 81 places, 80 transitions, 232 flow [2024-11-10 22:21:11,519 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=232, PETRI_PLACES=81, PETRI_TRANSITIONS=80} [2024-11-10 22:21:11,520 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 6 predicate places. [2024-11-10 22:21:11,520 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 80 transitions, 232 flow [2024-11-10 22:21:11,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 44.833333333333336) internal successors, (269), 6 states have internal predecessors, (269), 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) [2024-11-10 22:21:11,521 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:21:11,521 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-10 22:21:11,536 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 22:21:11,725 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 [2024-11-10 22:21:11,726 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:21:11,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:21:11,726 INFO L85 PathProgramCache]: Analyzing trace with hash -126990279, now seen corresponding path program 1 times [2024-11-10 22:21:11,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:21:11,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559924135] [2024-11-10 22:21:11,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:21:11,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:21:11,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:21:11,809 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:21:11,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:21:11,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559924135] [2024-11-10 22:21:11,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559924135] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:21:11,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910430359] [2024-11-10 22:21:11,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:21:11,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:21:11,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:21:11,812 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) [2024-11-10 22:21:11,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 22:21:11,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:21:11,865 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:21:11,865 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:21:11,887 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:21:11,887 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:21:11,925 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:21:11,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910430359] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:21:11,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:21:11,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-10 22:21:11,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867247234] [2024-11-10 22:21:11,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:21:11,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 22:21:11,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:21:11,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 22:21:11,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-10 22:21:11,989 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 84 [2024-11-10 22:21:11,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 80 transitions, 232 flow. Second operand has 12 states, 12 states have (on average 45.083333333333336) internal successors, (541), 12 states have internal predecessors, (541), 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) [2024-11-10 22:21:11,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:21:11,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 84 [2024-11-10 22:21:11,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:21:12,225 INFO L124 PetriNetUnfolderBase]: 317/719 cut-off events. [2024-11-10 22:21:12,225 INFO L125 PetriNetUnfolderBase]: For 125/125 co-relation queries the response was YES. [2024-11-10 22:21:12,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1326 conditions, 719 events. 317/719 cut-off events. For 125/125 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 4254 event pairs, 196 based on Foata normal form. 6/579 useless extension candidates. Maximal degree in co-relation 1168. Up to 490 conditions per place. [2024-11-10 22:21:12,230 INFO L140 encePairwiseOnDemand]: 75/84 looper letters, 31 selfloop transitions, 25 changer transitions 0/98 dead transitions. [2024-11-10 22:21:12,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 98 transitions, 458 flow [2024-11-10 22:21:12,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 22:21:12,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 22:21:12,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 502 transitions. [2024-11-10 22:21:12,236 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5976190476190476 [2024-11-10 22:21:12,236 INFO L175 Difference]: Start difference. First operand has 81 places, 80 transitions, 232 flow. Second operand 10 states and 502 transitions. [2024-11-10 22:21:12,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 98 transitions, 458 flow [2024-11-10 22:21:12,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 98 transitions, 400 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-10 22:21:12,239 INFO L231 Difference]: Finished difference. Result has 88 places, 98 transitions, 372 flow [2024-11-10 22:21:12,240 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=372, PETRI_PLACES=88, PETRI_TRANSITIONS=98} [2024-11-10 22:21:12,242 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 13 predicate places. [2024-11-10 22:21:12,242 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 98 transitions, 372 flow [2024-11-10 22:21:12,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 45.083333333333336) internal successors, (541), 12 states have internal predecessors, (541), 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) [2024-11-10 22:21:12,243 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:21:12,243 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:21:12,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-10 22:21:12,447 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 [2024-11-10 22:21:12,449 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:21:12,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:21:12,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1050763332, now seen corresponding path program 1 times [2024-11-10 22:21:12,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:21:12,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503876255] [2024-11-10 22:21:12,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:21:12,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:21:12,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:21:12,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:21:12,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:21:12,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503876255] [2024-11-10 22:21:12,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503876255] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:21:12,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:21:12,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:21:12,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507696767] [2024-11-10 22:21:12,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:21:12,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:21:12,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:21:12,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:21:12,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:21:12,573 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 84 [2024-11-10 22:21:12,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 98 transitions, 372 flow. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:21:12,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:21:12,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 84 [2024-11-10 22:21:12,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:21:12,789 INFO L124 PetriNetUnfolderBase]: 573/1233 cut-off events. [2024-11-10 22:21:12,789 INFO L125 PetriNetUnfolderBase]: For 159/159 co-relation queries the response was YES. [2024-11-10 22:21:12,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2264 conditions, 1233 events. 573/1233 cut-off events. For 159/159 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 8023 event pairs, 176 based on Foata normal form. 40/1048 useless extension candidates. Maximal degree in co-relation 2193. Up to 467 conditions per place. [2024-11-10 22:21:12,796 INFO L140 encePairwiseOnDemand]: 76/84 looper letters, 82 selfloop transitions, 5 changer transitions 0/125 dead transitions. [2024-11-10 22:21:12,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 125 transitions, 604 flow [2024-11-10 22:21:12,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:21:12,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:21:12,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 234 transitions. [2024-11-10 22:21:12,798 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6964285714285714 [2024-11-10 22:21:12,798 INFO L175 Difference]: Start difference. First operand has 88 places, 98 transitions, 372 flow. Second operand 4 states and 234 transitions. [2024-11-10 22:21:12,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 125 transitions, 604 flow [2024-11-10 22:21:12,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 125 transitions, 580 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-10 22:21:12,801 INFO L231 Difference]: Finished difference. Result has 91 places, 100 transitions, 382 flow [2024-11-10 22:21:12,801 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=382, PETRI_PLACES=91, PETRI_TRANSITIONS=100} [2024-11-10 22:21:12,802 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 16 predicate places. [2024-11-10 22:21:12,802 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 100 transitions, 382 flow [2024-11-10 22:21:12,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:21:12,802 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:21:12,802 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:21:12,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 22:21:12,803 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:21:12,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:21:12,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1786075711, now seen corresponding path program 1 times [2024-11-10 22:21:12,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:21:12,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987840297] [2024-11-10 22:21:12,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:21:12,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:21:12,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:21:12,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:21:12,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:21:12,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987840297] [2024-11-10 22:21:12,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987840297] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:21:12,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:21:12,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:21:12,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857307456] [2024-11-10 22:21:12,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:21:12,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:21:12,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:21:12,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:21:12,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:21:12,856 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 84 [2024-11-10 22:21:12,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 100 transitions, 382 flow. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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) [2024-11-10 22:21:12,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:21:12,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 84 [2024-11-10 22:21:12,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:21:12,987 INFO L124 PetriNetUnfolderBase]: 383/948 cut-off events. [2024-11-10 22:21:12,988 INFO L125 PetriNetUnfolderBase]: For 328/359 co-relation queries the response was YES. [2024-11-10 22:21:12,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1861 conditions, 948 events. 383/948 cut-off events. For 328/359 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 6113 event pairs, 249 based on Foata normal form. 18/778 useless extension candidates. Maximal degree in co-relation 1788. Up to 615 conditions per place. [2024-11-10 22:21:12,992 INFO L140 encePairwiseOnDemand]: 78/84 looper letters, 49 selfloop transitions, 7 changer transitions 0/98 dead transitions. [2024-11-10 22:21:12,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 98 transitions, 485 flow [2024-11-10 22:21:12,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:21:12,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:21:12,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 176 transitions. [2024-11-10 22:21:12,994 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6984126984126984 [2024-11-10 22:21:12,994 INFO L175 Difference]: Start difference. First operand has 91 places, 100 transitions, 382 flow. Second operand 3 states and 176 transitions. [2024-11-10 22:21:12,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 98 transitions, 485 flow [2024-11-10 22:21:12,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 98 transitions, 478 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:21:12,997 INFO L231 Difference]: Finished difference. Result has 93 places, 98 transitions, 391 flow [2024-11-10 22:21:12,997 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=391, PETRI_PLACES=93, PETRI_TRANSITIONS=98} [2024-11-10 22:21:12,998 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 18 predicate places. [2024-11-10 22:21:12,998 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 98 transitions, 391 flow [2024-11-10 22:21:12,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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) [2024-11-10 22:21:12,998 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:21:12,998 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1] [2024-11-10 22:21:12,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 22:21:12,998 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:21:12,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:21:12,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1501207115, now seen corresponding path program 2 times [2024-11-10 22:21:12,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:21:12,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909835186] [2024-11-10 22:21:12,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:21:12,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:21:13,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:21:13,140 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:21:13,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:21:13,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909835186] [2024-11-10 22:21:13,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909835186] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:21:13,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110127116] [2024-11-10 22:21:13,143 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:21:13,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:21:13,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:21:13,146 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) [2024-11-10 22:21:13,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 22:21:13,201 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 22:21:13,201 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:21:13,202 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:21:13,203 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:21:13,243 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 22:21:13,244 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:21:13,294 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 22:21:13,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110127116] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:21:13,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:21:13,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 13 [2024-11-10 22:21:13,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252476156] [2024-11-10 22:21:13,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:21:13,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-10 22:21:13,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:21:13,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-10 22:21:13,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-10 22:21:13,335 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 84 [2024-11-10 22:21:13,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 98 transitions, 391 flow. Second operand has 15 states, 15 states have (on average 43.333333333333336) internal successors, (650), 15 states have internal predecessors, (650), 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) [2024-11-10 22:21:13,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:21:13,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 84 [2024-11-10 22:21:13,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:21:13,625 INFO L124 PetriNetUnfolderBase]: 385/954 cut-off events. [2024-11-10 22:21:13,626 INFO L125 PetriNetUnfolderBase]: For 364/395 co-relation queries the response was YES. [2024-11-10 22:21:13,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1888 conditions, 954 events. 385/954 cut-off events. For 364/395 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 6154 event pairs, 249 based on Foata normal form. 18/784 useless extension candidates. Maximal degree in co-relation 1798. Up to 590 conditions per place. [2024-11-10 22:21:13,631 INFO L140 encePairwiseOnDemand]: 75/84 looper letters, 35 selfloop transitions, 33 changer transitions 0/108 dead transitions. [2024-11-10 22:21:13,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 108 transitions, 564 flow [2024-11-10 22:21:13,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 22:21:13,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-10 22:21:13,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 614 transitions. [2024-11-10 22:21:13,633 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5622710622710623 [2024-11-10 22:21:13,633 INFO L175 Difference]: Start difference. First operand has 93 places, 98 transitions, 391 flow. Second operand 13 states and 614 transitions. [2024-11-10 22:21:13,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 108 transitions, 564 flow [2024-11-10 22:21:13,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 108 transitions, 528 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-11-10 22:21:13,637 INFO L231 Difference]: Finished difference. Result has 97 places, 100 transitions, 426 flow [2024-11-10 22:21:13,637 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=426, PETRI_PLACES=97, PETRI_TRANSITIONS=100} [2024-11-10 22:21:13,638 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 22 predicate places. [2024-11-10 22:21:13,638 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 100 transitions, 426 flow [2024-11-10 22:21:13,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 43.333333333333336) internal successors, (650), 15 states have internal predecessors, (650), 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) [2024-11-10 22:21:13,639 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:21:13,639 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:21:13,652 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 22:21:13,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:21:13,840 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:21:13,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:21:13,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1184739060, now seen corresponding path program 1 times [2024-11-10 22:21:13,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:21:13,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181589497] [2024-11-10 22:21:13,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:21:13,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:21:13,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:21:13,934 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:21:13,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:21:13,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181589497] [2024-11-10 22:21:13,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181589497] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:21:13,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062468688] [2024-11-10 22:21:13,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:21:13,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:21:13,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:21:13,936 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) [2024-11-10 22:21:13,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 22:21:13,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:21:13,997 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 22:21:13,998 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:21:14,056 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:21:14,056 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:21:14,085 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:21:14,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062468688] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:21:14,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:21:14,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-10 22:21:14,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701130098] [2024-11-10 22:21:14,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:21:14,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 22:21:14,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:21:14,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 22:21:14,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-10 22:21:14,109 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 84 [2024-11-10 22:21:14,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 100 transitions, 426 flow. Second operand has 11 states, 11 states have (on average 43.81818181818182) internal successors, (482), 11 states have internal predecessors, (482), 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) [2024-11-10 22:21:14,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:21:14,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 84 [2024-11-10 22:21:14,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:21:14,286 INFO L124 PetriNetUnfolderBase]: 381/946 cut-off events. [2024-11-10 22:21:14,286 INFO L125 PetriNetUnfolderBase]: For 372/403 co-relation queries the response was YES. [2024-11-10 22:21:14,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1871 conditions, 946 events. 381/946 cut-off events. For 372/403 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5955 event pairs, 249 based on Foata normal form. 20/778 useless extension candidates. Maximal degree in co-relation 1689. Up to 600 conditions per place. [2024-11-10 22:21:14,292 INFO L140 encePairwiseOnDemand]: 76/84 looper letters, 32 selfloop transitions, 24 changer transitions 0/96 dead transitions. [2024-11-10 22:21:14,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 96 transitions, 508 flow [2024-11-10 22:21:14,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 22:21:14,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 22:21:14,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 340 transitions. [2024-11-10 22:21:14,293 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5782312925170068 [2024-11-10 22:21:14,293 INFO L175 Difference]: Start difference. First operand has 97 places, 100 transitions, 426 flow. Second operand 7 states and 340 transitions. [2024-11-10 22:21:14,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 96 transitions, 508 flow [2024-11-10 22:21:14,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 96 transitions, 402 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-11-10 22:21:14,296 INFO L231 Difference]: Finished difference. Result has 93 places, 96 transitions, 364 flow [2024-11-10 22:21:14,296 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=364, PETRI_PLACES=93, PETRI_TRANSITIONS=96} [2024-11-10 22:21:14,297 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 18 predicate places. [2024-11-10 22:21:14,297 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 96 transitions, 364 flow [2024-11-10 22:21:14,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 43.81818181818182) internal successors, (482), 11 states have internal predecessors, (482), 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) [2024-11-10 22:21:14,298 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:21:14,298 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:21:14,316 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-10 22:21:14,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:21:14,498 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:21:14,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:21:14,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1485525210, now seen corresponding path program 2 times [2024-11-10 22:21:14,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:21:14,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211450559] [2024-11-10 22:21:14,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:21:14,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:21:14,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:21:14,645 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-10 22:21:14,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:21:14,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211450559] [2024-11-10 22:21:14,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211450559] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:21:14,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672022348] [2024-11-10 22:21:14,645 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:21:14,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:21:14,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:21:14,647 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) [2024-11-10 22:21:14,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 22:21:14,733 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 22:21:14,733 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:21:14,735 INFO L255 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-10 22:21:14,736 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:21:14,852 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-10 22:21:14,852 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:21:14,931 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-10 22:21:14,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672022348] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:21:14,932 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:21:14,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-10 22:21:14,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288228411] [2024-11-10 22:21:14,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:21:14,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-10 22:21:14,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:21:14,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-10 22:21:14,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2024-11-10 22:21:14,986 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 84 [2024-11-10 22:21:14,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 96 transitions, 364 flow. Second operand has 18 states, 18 states have (on average 43.55555555555556) internal successors, (784), 18 states have internal predecessors, (784), 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) [2024-11-10 22:21:14,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:21:14,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 84 [2024-11-10 22:21:14,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:21:15,207 INFO L124 PetriNetUnfolderBase]: 377/938 cut-off events. [2024-11-10 22:21:15,208 INFO L125 PetriNetUnfolderBase]: For 353/384 co-relation queries the response was YES. [2024-11-10 22:21:15,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1832 conditions, 938 events. 377/938 cut-off events. For 353/384 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5871 event pairs, 249 based on Foata normal form. 20/770 useless extension candidates. Maximal degree in co-relation 1693. Up to 590 conditions per place. [2024-11-10 22:21:15,213 INFO L140 encePairwiseOnDemand]: 76/84 looper letters, 30 selfloop transitions, 22 changer transitions 0/92 dead transitions. [2024-11-10 22:21:15,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 92 transitions, 448 flow [2024-11-10 22:21:15,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 22:21:15,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-10 22:21:15,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 516 transitions. [2024-11-10 22:21:15,215 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5584415584415584 [2024-11-10 22:21:15,215 INFO L175 Difference]: Start difference. First operand has 93 places, 96 transitions, 364 flow. Second operand 11 states and 516 transitions. [2024-11-10 22:21:15,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 92 transitions, 448 flow [2024-11-10 22:21:15,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 92 transitions, 404 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-10 22:21:15,218 INFO L231 Difference]: Finished difference. Result has 99 places, 92 transitions, 362 flow [2024-11-10 22:21:15,218 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=362, PETRI_PLACES=99, PETRI_TRANSITIONS=92} [2024-11-10 22:21:15,219 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 24 predicate places. [2024-11-10 22:21:15,219 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 92 transitions, 362 flow [2024-11-10 22:21:15,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 43.55555555555556) internal successors, (784), 18 states have internal predecessors, (784), 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) [2024-11-10 22:21:15,219 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:21:15,219 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:21:15,235 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-10 22:21:15,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:21:15,421 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:21:15,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:21:15,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1555389632, now seen corresponding path program 3 times [2024-11-10 22:21:15,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:21:15,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180563006] [2024-11-10 22:21:15,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:21:15,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:21:15,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:21:16,428 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-10 22:21:16,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:21:16,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180563006] [2024-11-10 22:21:16,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180563006] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:21:16,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308676187] [2024-11-10 22:21:16,428 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 22:21:16,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:21:16,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:21:16,430 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) [2024-11-10 22:21:16,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 22:21:16,533 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-10 22:21:16,533 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:21:16,536 INFO L255 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-10 22:21:16,544 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:21:16,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-10 22:21:16,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 22:21:16,649 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-10 22:21:16,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 22:21:16,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-10 22:21:16,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 22:21:16,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-10 22:21:16,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 22:21:16,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-10 22:21:16,866 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 [2024-11-10 22:21:16,882 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 24 proven. 26 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-10 22:21:16,882 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:21:17,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2024-11-10 22:21:17,499 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 44 treesize of output 42 [2024-11-10 22:21:17,541 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-10 22:21:17,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308676187] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:21:17,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:21:17,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 9] total 33 [2024-11-10 22:21:17,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917171740] [2024-11-10 22:21:17,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:21:17,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-10 22:21:17,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:21:17,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-10 22:21:17,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=950, Unknown=0, NotChecked=0, Total=1122 [2024-11-10 22:21:17,815 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 84 [2024-11-10 22:21:17,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 92 transitions, 362 flow. Second operand has 34 states, 34 states have (on average 40.38235294117647) internal successors, (1373), 34 states have internal predecessors, (1373), 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) [2024-11-10 22:21:17,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:21:17,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 84 [2024-11-10 22:21:17,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:21:18,571 INFO L124 PetriNetUnfolderBase]: 867/2217 cut-off events. [2024-11-10 22:21:18,572 INFO L125 PetriNetUnfolderBase]: For 647/661 co-relation queries the response was YES. [2024-11-10 22:21:18,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4214 conditions, 2217 events. 867/2217 cut-off events. For 647/661 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 16135 event pairs, 198 based on Foata normal form. 14/1915 useless extension candidates. Maximal degree in co-relation 4067. Up to 442 conditions per place. [2024-11-10 22:21:18,582 INFO L140 encePairwiseOnDemand]: 69/84 looper letters, 82 selfloop transitions, 35 changer transitions 0/155 dead transitions. [2024-11-10 22:21:18,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 155 transitions, 753 flow [2024-11-10 22:21:18,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-10 22:21:18,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-10 22:21:18,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 777 transitions. [2024-11-10 22:21:18,584 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5441176470588235 [2024-11-10 22:21:18,584 INFO L175 Difference]: Start difference. First operand has 99 places, 92 transitions, 362 flow. Second operand 17 states and 777 transitions. [2024-11-10 22:21:18,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 155 transitions, 753 flow [2024-11-10 22:21:18,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 155 transitions, 709 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-11-10 22:21:18,588 INFO L231 Difference]: Finished difference. Result has 108 places, 100 transitions, 450 flow [2024-11-10 22:21:18,588 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=450, PETRI_PLACES=108, PETRI_TRANSITIONS=100} [2024-11-10 22:21:18,588 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 33 predicate places. [2024-11-10 22:21:18,588 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 100 transitions, 450 flow [2024-11-10 22:21:18,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 40.38235294117647) internal successors, (1373), 34 states have internal predecessors, (1373), 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) [2024-11-10 22:21:18,589 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:21:18,589 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:21:18,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-10 22:21:18,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:21:18,790 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:21:18,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:21:18,790 INFO L85 PathProgramCache]: Analyzing trace with hash -972468449, now seen corresponding path program 1 times [2024-11-10 22:21:18,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:21:18,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809436051] [2024-11-10 22:21:18,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:21:18,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:21:18,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:21:19,509 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-10 22:21:19,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:21:19,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809436051] [2024-11-10 22:21:19,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809436051] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:21:19,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520287169] [2024-11-10 22:21:19,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:21:19,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:21:19,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:21:19,511 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) [2024-11-10 22:21:19,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 22:21:19,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:21:19,601 INFO L255 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-10 22:21:19,604 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:21:19,622 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-10 22:21:19,679 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-10 22:21:19,680 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 33 treesize of output 13 [2024-11-10 22:21:19,735 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-10 22:21:19,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 33 treesize of output 13 [2024-11-10 22:21:19,792 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-10 22:21:19,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 33 treesize of output 13 [2024-11-10 22:21:19,870 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-10 22:21:19,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 33 treesize of output 13 [2024-11-10 22:21:19,928 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 [2024-11-10 22:21:19,947 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 24 proven. 26 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-10 22:21:19,947 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:21:20,544 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2024-11-10 22:21:20,548 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 52 treesize of output 50 [2024-11-10 22:21:20,572 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-10 22:21:20,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520287169] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:21:20,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:21:20,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 9] total 35 [2024-11-10 22:21:20,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360640813] [2024-11-10 22:21:20,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:21:20,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-10 22:21:20,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:21:20,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-10 22:21:20,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1096, Unknown=0, NotChecked=0, Total=1260 [2024-11-10 22:21:20,790 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 84 [2024-11-10 22:21:20,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 100 transitions, 450 flow. Second operand has 36 states, 36 states have (on average 38.416666666666664) internal successors, (1383), 36 states have internal predecessors, (1383), 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) [2024-11-10 22:21:20,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:21:20,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 84 [2024-11-10 22:21:20,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:21:21,608 INFO L124 PetriNetUnfolderBase]: 1066/2479 cut-off events. [2024-11-10 22:21:21,608 INFO L125 PetriNetUnfolderBase]: For 1647/1660 co-relation queries the response was YES. [2024-11-10 22:21:21,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5296 conditions, 2479 events. 1066/2479 cut-off events. For 1647/1660 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 17518 event pairs, 268 based on Foata normal form. 33/2190 useless extension candidates. Maximal degree in co-relation 5136. Up to 594 conditions per place. [2024-11-10 22:21:21,624 INFO L140 encePairwiseOnDemand]: 69/84 looper letters, 86 selfloop transitions, 35 changer transitions 0/156 dead transitions. [2024-11-10 22:21:21,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 156 transitions, 821 flow [2024-11-10 22:21:21,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-10 22:21:21,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-10 22:21:21,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 743 transitions. [2024-11-10 22:21:21,626 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5203081232492998 [2024-11-10 22:21:21,626 INFO L175 Difference]: Start difference. First operand has 108 places, 100 transitions, 450 flow. Second operand 17 states and 743 transitions. [2024-11-10 22:21:21,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 156 transitions, 821 flow [2024-11-10 22:21:21,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 156 transitions, 770 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-11-10 22:21:21,630 INFO L231 Difference]: Finished difference. Result has 115 places, 102 transitions, 491 flow [2024-11-10 22:21:21,630 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=491, PETRI_PLACES=115, PETRI_TRANSITIONS=102} [2024-11-10 22:21:21,631 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 40 predicate places. [2024-11-10 22:21:21,631 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 102 transitions, 491 flow [2024-11-10 22:21:21,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 38.416666666666664) internal successors, (1383), 36 states have internal predecessors, (1383), 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) [2024-11-10 22:21:21,632 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:21:21,632 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:21:21,650 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-10 22:21:21,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:21:21,836 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:21:21,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:21:21,837 INFO L85 PathProgramCache]: Analyzing trace with hash -59118043, now seen corresponding path program 1 times [2024-11-10 22:21:21,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:21:21,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875558115] [2024-11-10 22:21:21,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:21:21,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:21:21,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:21:21,901 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-10 22:21:21,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:21:21,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875558115] [2024-11-10 22:21:21,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875558115] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:21:21,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:21:21,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:21:21,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807229834] [2024-11-10 22:21:21,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:21:21,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:21:21,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:21:21,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:21:21,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:21:21,919 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 84 [2024-11-10 22:21:21,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 102 transitions, 491 flow. Second operand has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 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) [2024-11-10 22:21:21,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:21:21,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 84 [2024-11-10 22:21:21,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:21:22,201 INFO L124 PetriNetUnfolderBase]: 1371/3009 cut-off events. [2024-11-10 22:21:22,202 INFO L125 PetriNetUnfolderBase]: For 3634/3786 co-relation queries the response was YES. [2024-11-10 22:21:22,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7017 conditions, 3009 events. 1371/3009 cut-off events. For 3634/3786 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 22152 event pairs, 488 based on Foata normal form. 184/2652 useless extension candidates. Maximal degree in co-relation 6857. Up to 1134 conditions per place. [2024-11-10 22:21:22,228 INFO L140 encePairwiseOnDemand]: 76/84 looper letters, 101 selfloop transitions, 5 changer transitions 0/145 dead transitions. [2024-11-10 22:21:22,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 145 transitions, 967 flow [2024-11-10 22:21:22,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:21:22,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:21:22,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 232 transitions. [2024-11-10 22:21:22,229 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6904761904761905 [2024-11-10 22:21:22,229 INFO L175 Difference]: Start difference. First operand has 115 places, 102 transitions, 491 flow. Second operand 4 states and 232 transitions. [2024-11-10 22:21:22,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 145 transitions, 967 flow [2024-11-10 22:21:22,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 145 transitions, 883 flow, removed 1 selfloop flow, removed 14 redundant places. [2024-11-10 22:21:22,235 INFO L231 Difference]: Finished difference. Result has 106 places, 104 transitions, 463 flow [2024-11-10 22:21:22,236 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=463, PETRI_PLACES=106, PETRI_TRANSITIONS=104} [2024-11-10 22:21:22,236 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 31 predicate places. [2024-11-10 22:21:22,236 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 104 transitions, 463 flow [2024-11-10 22:21:22,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 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) [2024-11-10 22:21:22,237 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:21:22,237 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:21:22,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-10 22:21:22,237 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:21:22,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:21:22,240 INFO L85 PathProgramCache]: Analyzing trace with hash -81751198, now seen corresponding path program 1 times [2024-11-10 22:21:22,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:21:22,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674753215] [2024-11-10 22:21:22,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:21:22,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:21:22,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:21:23,317 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 22:21:23,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:21:23,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674753215] [2024-11-10 22:21:23,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674753215] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:21:23,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111088755] [2024-11-10 22:21:23,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:21:23,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:21:23,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:21:23,319 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) [2024-11-10 22:21:23,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-10 22:21:23,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:21:23,413 INFO L255 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-10 22:21:23,418 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:21:23,429 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 [2024-11-10 22:21:23,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-10 22:21:23,528 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-10 22:21:23,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 33 treesize of output 13 [2024-11-10 22:21:23,598 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-10 22:21:23,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 33 treesize of output 13 [2024-11-10 22:21:23,672 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-10 22:21:23,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 33 treesize of output 13 [2024-11-10 22:21:23,739 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-10 22:21:23,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 33 treesize of output 13 [2024-11-10 22:21:23,774 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-10 22:21:23,775 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 [2024-11-10 22:21:23,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-10 22:21:23,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-10 22:21:23,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-10 22:21:23,846 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-10 22:21:23,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-10 22:21:23,931 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 [2024-11-10 22:21:23,985 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 24 proven. 44 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 22:21:23,985 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:21:24,038 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_305 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_305) c_~o_0~0.base) c_~o_0~0.offset)))) is different from false [2024-11-10 22:21:24,077 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_305 (Array Int Int)) (|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_142| Int)) (or (< 0 (+ (select (select (store |c_#memory_int#1| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_142| v_ArrVal_305) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 2147483649)) (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_142|) 0)))) is different from false [2024-11-10 22:22:31,855 INFO L349 Elim1Store]: treesize reduction 244, result has 20.0 percent of original size [2024-11-10 22:22:31,855 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 5 case distinctions, treesize of input 52 treesize of output 73 [2024-11-10 22:22:31,870 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 22:22:31,871 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 39 treesize of output 35 [2024-11-10 22:22:31,877 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 11 treesize of output 9 [2024-11-10 22:22:31,941 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 18 proven. 14 refuted. 0 times theorem prover too weak. 32 trivial. 36 not checked. [2024-11-10 22:22:31,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111088755] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:22:31,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:22:31,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 15] total 45 [2024-11-10 22:22:31,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296361139] [2024-11-10 22:22:31,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:22:31,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-10 22:22:31,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:22:31,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-10 22:22:31,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=1767, Unknown=18, NotChecked=174, Total=2162 [2024-11-10 22:22:31,980 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 84 [2024-11-10 22:22:31,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 104 transitions, 463 flow. Second operand has 47 states, 47 states have (on average 29.914893617021278) internal successors, (1406), 47 states have internal predecessors, (1406), 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) [2024-11-10 22:22:31,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:22:31,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 84 [2024-11-10 22:22:31,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:22:34,216 INFO L124 PetriNetUnfolderBase]: 2058/3892 cut-off events. [2024-11-10 22:22:34,216 INFO L125 PetriNetUnfolderBase]: For 2921/3090 co-relation queries the response was YES. [2024-11-10 22:22:34,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9876 conditions, 3892 events. 2058/3892 cut-off events. For 2921/3090 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 26544 event pairs, 493 based on Foata normal form. 116/3732 useless extension candidates. Maximal degree in co-relation 9727. Up to 1061 conditions per place. [2024-11-10 22:22:34,236 INFO L140 encePairwiseOnDemand]: 66/84 looper letters, 175 selfloop transitions, 40 changer transitions 0/241 dead transitions. [2024-11-10 22:22:34,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 241 transitions, 1338 flow [2024-11-10 22:22:34,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-10 22:22:34,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-11-10 22:22:34,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1065 transitions. [2024-11-10 22:22:34,241 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40898617511520735 [2024-11-10 22:22:34,241 INFO L175 Difference]: Start difference. First operand has 106 places, 104 transitions, 463 flow. Second operand 31 states and 1065 transitions. [2024-11-10 22:22:34,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 241 transitions, 1338 flow [2024-11-10 22:22:34,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 241 transitions, 1338 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 22:22:34,249 INFO L231 Difference]: Finished difference. Result has 142 places, 108 transitions, 591 flow [2024-11-10 22:22:34,249 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=591, PETRI_PLACES=142, PETRI_TRANSITIONS=108} [2024-11-10 22:22:34,250 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 67 predicate places. [2024-11-10 22:22:34,250 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 108 transitions, 591 flow [2024-11-10 22:22:34,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 29.914893617021278) internal successors, (1406), 47 states have internal predecessors, (1406), 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) [2024-11-10 22:22:34,252 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:22:34,252 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:22:34,265 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-10 22:22:34,455 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,SelfDestructingSolverStorable11 [2024-11-10 22:22:34,456 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:22:34,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:22:34,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1832658670, now seen corresponding path program 1 times [2024-11-10 22:22:34,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:22:34,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089980298] [2024-11-10 22:22:34,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:34,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:22:34,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:35,454 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 22:22:35,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:22:35,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089980298] [2024-11-10 22:22:35,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089980298] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:22:35,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685997354] [2024-11-10 22:22:35,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:35,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:22:35,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:22:35,456 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) [2024-11-10 22:22:35,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-10 22:22:35,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:35,549 INFO L255 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-10 22:22:35,553 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:22:35,557 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 [2024-11-10 22:22:35,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-10 22:22:35,634 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-10 22:22:35,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 31 treesize of output 11 [2024-11-10 22:22:35,695 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-10 22:22:35,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 31 treesize of output 11 [2024-11-10 22:22:35,762 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-10 22:22:35,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 31 treesize of output 11 [2024-11-10 22:22:35,827 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-10 22:22:35,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 31 treesize of output 11 [2024-11-10 22:22:35,867 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-10 22:22:35,867 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 [2024-11-10 22:22:35,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-10 22:22:35,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-10 22:22:35,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-10 22:22:35,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-10 22:22:35,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-10 22:22:36,038 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 [2024-11-10 22:22:36,056 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 24 proven. 44 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 22:22:36,056 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:22:36,111 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_367 (Array Int Int))) (< (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_367) c_~o_0~0.base) c_~o_0~0.offset) 9223372039002259456)) is different from false