./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-bad-ring.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 be394a9cdc866c1e1426a3fe296e99873bcf37ee5e7e1c9e487b239a3e0a8fbe --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 14:06:10,986 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 14:06:11,021 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 14:06:11,028 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 14:06:11,028 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 14:06:11,043 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 14:06:11,043 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 14:06:11,043 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 14:06:11,044 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 14:06:11,044 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 14:06:11,044 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 14:06:11,045 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 14:06:11,045 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 14:06:11,045 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 14:06:11,046 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 14:06:11,046 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 14:06:11,046 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 14:06:11,046 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 14:06:11,047 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 14:06:11,047 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 14:06:11,047 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 14:06:11,052 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 14:06:11,052 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 14:06:11,052 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 14:06:11,052 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 14:06:11,052 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 14:06:11,052 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 14:06:11,053 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 14:06:11,053 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 14:06:11,053 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 14:06:11,053 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 14:06:11,053 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 14:06:11,054 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 14:06:11,054 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 14:06:11,054 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:06:11,054 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 14:06:11,054 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 14:06:11,054 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 14:06:11,055 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 14:06:11,055 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 14:06:11,055 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 14:06:11,060 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 14:06:11,060 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 14:06:11,060 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 14:06:11,060 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be394a9cdc866c1e1426a3fe296e99873bcf37ee5e7e1c9e487b239a3e0a8fbe [2024-11-19 14:06:11,336 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 14:06:11,354 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 14:06:11,355 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 14:06:11,356 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 14:06:11,357 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 14:06:11,357 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c [2024-11-19 14:06:12,693 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 14:06:12,902 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 14:06:12,903 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c [2024-11-19 14:06:12,917 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd7dec378/7becde1967564126a59951401f35c32a/FLAGe97077665 [2024-11-19 14:06:12,930 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd7dec378/7becde1967564126a59951401f35c32a [2024-11-19 14:06:12,932 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 14:06:12,935 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 14:06:12,936 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 14:06:12,936 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 14:06:12,965 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 14:06:12,966 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:06:12" (1/1) ... [2024-11-19 14:06:12,968 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5aaa689a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:12, skipping insertion in model container [2024-11-19 14:06:12,969 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:06:12" (1/1) ... [2024-11-19 14:06:12,995 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 14:06:13,187 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:06:13,196 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 14:06:13,228 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:06:13,253 INFO L204 MainTranslator]: Completed translation [2024-11-19 14:06:13,257 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:13 WrapperNode [2024-11-19 14:06:13,257 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 14:06:13,258 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 14:06:13,258 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 14:06:13,258 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 14:06:13,266 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:13" (1/1) ... [2024-11-19 14:06:13,277 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:13" (1/1) ... [2024-11-19 14:06:13,309 INFO L138 Inliner]: procedures = 24, calls = 47, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 346 [2024-11-19 14:06:13,310 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 14:06:13,310 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 14:06:13,311 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 14:06:13,311 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 14:06:13,319 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:13" (1/1) ... [2024-11-19 14:06:13,319 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:13" (1/1) ... [2024-11-19 14:06:13,326 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:13" (1/1) ... [2024-11-19 14:06:13,351 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-19 14:06:13,351 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:13" (1/1) ... [2024-11-19 14:06:13,351 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:13" (1/1) ... [2024-11-19 14:06:13,363 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:13" (1/1) ... [2024-11-19 14:06:13,367 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:13" (1/1) ... [2024-11-19 14:06:13,369 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:13" (1/1) ... [2024-11-19 14:06:13,370 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:13" (1/1) ... [2024-11-19 14:06:13,374 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 14:06:13,375 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 14:06:13,376 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 14:06:13,376 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 14:06:13,376 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:13" (1/1) ... [2024-11-19 14:06:13,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:06:13,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:13,419 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 14:06:13,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 14:06:13,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 14:06:13,457 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 14:06:13,457 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 14:06:13,458 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 14:06:13,458 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 14:06:13,458 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-19 14:06:13,458 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-19 14:06:13,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 14:06:13,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 14:06:13,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 14:06:13,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 14:06:13,459 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-19 14:06:13,459 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-19 14:06:13,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 14:06:13,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 14:06:13,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 14:06:13,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 14:06:13,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 14:06:13,461 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 14:06:13,564 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 14:06:13,565 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 14:06:13,983 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 14:06:13,983 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 14:06:14,359 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 14:06:14,359 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-19 14:06:14,360 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:06:14 BoogieIcfgContainer [2024-11-19 14:06:14,360 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 14:06:14,362 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 14:06:14,362 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 14:06:14,365 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 14:06:14,365 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:06:12" (1/3) ... [2024-11-19 14:06:14,366 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fb4e2b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:06:14, skipping insertion in model container [2024-11-19 14:06:14,366 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:13" (2/3) ... [2024-11-19 14:06:14,366 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fb4e2b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:06:14, skipping insertion in model container [2024-11-19 14:06:14,367 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:06:14" (3/3) ... [2024-11-19 14:06:14,368 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring.wvr.c [2024-11-19 14:06:14,380 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 14:06:14,380 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2024-11-19 14:06:14,380 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 14:06:14,501 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-19 14:06:14,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 89 transitions, 199 flow [2024-11-19 14:06:14,588 INFO L124 PetriNetUnfolderBase]: 8/86 cut-off events. [2024-11-19 14:06:14,589 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-19 14:06:14,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 86 events. 8/86 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 306 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 66. Up to 2 conditions per place. [2024-11-19 14:06:14,592 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 89 transitions, 199 flow [2024-11-19 14:06:14,595 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 84 transitions, 183 flow [2024-11-19 14:06:14,605 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 14:06:14,614 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;@46476b2e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 14:06:14,618 INFO L334 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2024-11-19 14:06:14,620 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 14:06:14,621 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-19 14:06:14,621 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 14:06:14,621 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:14,624 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 14:06:14,625 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-19 14:06:14,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:14,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1029222, now seen corresponding path program 1 times [2024-11-19 14:06:14,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:14,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746884503] [2024-11-19 14:06:14,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:14,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:14,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:14,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:14,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:14,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746884503] [2024-11-19 14:06:14,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746884503] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:14,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:14,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:06:14,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859106637] [2024-11-19 14:06:14,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:14,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:06:14,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:14,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:06:14,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:06:15,013 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 89 [2024-11-19 14:06:15,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 84 transitions, 183 flow. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:15,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:15,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 89 [2024-11-19 14:06:15,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:16,168 INFO L124 PetriNetUnfolderBase]: 6026/10035 cut-off events. [2024-11-19 14:06:16,168 INFO L125 PetriNetUnfolderBase]: For 367/367 co-relation queries the response was YES. [2024-11-19 14:06:16,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18661 conditions, 10035 events. 6026/10035 cut-off events. For 367/367 co-relation queries the response was YES. Maximal size of possible extension queue 605. Compared 72899 event pairs, 5468 based on Foata normal form. 486/7021 useless extension candidates. Maximal degree in co-relation 17888. Up to 8260 conditions per place. [2024-11-19 14:06:16,219 INFO L140 encePairwiseOnDemand]: 64/89 looper letters, 52 selfloop transitions, 10 changer transitions 0/84 dead transitions. [2024-11-19 14:06:16,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 84 transitions, 307 flow [2024-11-19 14:06:16,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:06:16,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:06:16,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 177 transitions. [2024-11-19 14:06:16,228 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49719101123595505 [2024-11-19 14:06:16,230 INFO L175 Difference]: Start difference. First operand has 86 places, 84 transitions, 183 flow. Second operand 4 states and 177 transitions. [2024-11-19 14:06:16,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 84 transitions, 307 flow [2024-11-19 14:06:16,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 84 transitions, 298 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-19 14:06:16,238 INFO L231 Difference]: Finished difference. Result has 80 places, 84 transitions, 244 flow [2024-11-19 14:06:16,239 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=244, PETRI_PLACES=80, PETRI_TRANSITIONS=84} [2024-11-19 14:06:16,241 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, -6 predicate places. [2024-11-19 14:06:16,242 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 84 transitions, 244 flow [2024-11-19 14:06:16,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:16,242 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:16,242 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-19 14:06:16,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 14:06:16,243 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-19 14:06:16,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:16,243 INFO L85 PathProgramCache]: Analyzing trace with hash 597844387, now seen corresponding path program 1 times [2024-11-19 14:06:16,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:16,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95538248] [2024-11-19 14:06:16,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:16,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:16,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:16,325 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:16,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:16,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95538248] [2024-11-19 14:06:16,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95538248] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:06:16,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111962073] [2024-11-19 14:06:16,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:16,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:16,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:16,331 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:06:16,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 14:06:16,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:16,407 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:06:16,410 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:06:16,495 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:16,496 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:06:16,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111962073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:16,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:06:16,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-19 14:06:16,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701844034] [2024-11-19 14:06:16,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:16,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 14:06:16,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:16,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 14:06:16,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 14:06:16,564 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 89 [2024-11-19 14:06:16,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 84 transitions, 244 flow. Second operand has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:16,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:16,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 89 [2024-11-19 14:06:16,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:17,689 INFO L124 PetriNetUnfolderBase]: 6026/10032 cut-off events. [2024-11-19 14:06:17,690 INFO L125 PetriNetUnfolderBase]: For 98/98 co-relation queries the response was YES. [2024-11-19 14:06:17,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18565 conditions, 10032 events. 6026/10032 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 605. Compared 72956 event pairs, 5468 based on Foata normal form. 3/6540 useless extension candidates. Maximal degree in co-relation 18492. Up to 8245 conditions per place. [2024-11-19 14:06:17,737 INFO L140 encePairwiseOnDemand]: 76/89 looper letters, 42 selfloop transitions, 17 changer transitions 0/81 dead transitions. [2024-11-19 14:06:17,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 81 transitions, 350 flow [2024-11-19 14:06:17,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:06:17,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:06:17,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 212 transitions. [2024-11-19 14:06:17,739 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3970037453183521 [2024-11-19 14:06:17,739 INFO L175 Difference]: Start difference. First operand has 80 places, 84 transitions, 244 flow. Second operand 6 states and 212 transitions. [2024-11-19 14:06:17,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 81 transitions, 350 flow [2024-11-19 14:06:17,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 81 transitions, 350 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 14:06:17,741 INFO L231 Difference]: Finished difference. Result has 82 places, 81 transitions, 266 flow [2024-11-19 14:06:17,742 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=266, PETRI_PLACES=82, PETRI_TRANSITIONS=81} [2024-11-19 14:06:17,742 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, -4 predicate places. [2024-11-19 14:06:17,742 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 81 transitions, 266 flow [2024-11-19 14:06:17,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:17,743 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:17,743 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-19 14:06:17,757 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 14:06:17,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:17,944 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-19 14:06:17,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:17,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1353307884, now seen corresponding path program 1 times [2024-11-19 14:06:17,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:17,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685322330] [2024-11-19 14:06:17,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:17,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:18,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:18,066 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:18,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:18,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685322330] [2024-11-19 14:06:18,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685322330] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:06:18,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484200863] [2024-11-19 14:06:18,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:18,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:18,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:18,069 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:06:18,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 14:06:18,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:18,138 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:06:18,139 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:06:18,156 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:18,157 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:06:18,185 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:18,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484200863] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:06:18,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:06:18,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-19 14:06:18,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097176497] [2024-11-19 14:06:18,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:06:18,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 14:06:18,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:18,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 14:06:18,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-19 14:06:18,224 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 89 [2024-11-19 14:06:18,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 81 transitions, 266 flow. Second operand has 12 states, 12 states have (on average 26.083333333333332) internal successors, (313), 12 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:18,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:18,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 89 [2024-11-19 14:06:18,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:19,180 INFO L124 PetriNetUnfolderBase]: 6035/10068 cut-off events. [2024-11-19 14:06:19,181 INFO L125 PetriNetUnfolderBase]: For 163/163 co-relation queries the response was YES. [2024-11-19 14:06:19,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18706 conditions, 10068 events. 6035/10068 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 605. Compared 73360 event pairs, 5468 based on Foata normal form. 9/6582 useless extension candidates. Maximal degree in co-relation 18494. Up to 8260 conditions per place. [2024-11-19 14:06:19,227 INFO L140 encePairwiseOnDemand]: 76/89 looper letters, 49 selfloop transitions, 37 changer transitions 0/108 dead transitions. [2024-11-19 14:06:19,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 108 transitions, 612 flow [2024-11-19 14:06:19,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 14:06:19,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 14:06:19,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 345 transitions. [2024-11-19 14:06:19,230 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38764044943820225 [2024-11-19 14:06:19,230 INFO L175 Difference]: Start difference. First operand has 82 places, 81 transitions, 266 flow. Second operand 10 states and 345 transitions. [2024-11-19 14:06:19,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 108 transitions, 612 flow [2024-11-19 14:06:19,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 108 transitions, 529 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-11-19 14:06:19,237 INFO L231 Difference]: Finished difference. Result has 89 places, 108 transitions, 481 flow [2024-11-19 14:06:19,237 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=481, PETRI_PLACES=89, PETRI_TRANSITIONS=108} [2024-11-19 14:06:19,238 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 3 predicate places. [2024-11-19 14:06:19,238 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 108 transitions, 481 flow [2024-11-19 14:06:19,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 26.083333333333332) internal successors, (313), 12 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:19,238 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:19,238 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:19,251 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 14:06:19,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-19 14:06:19,439 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-19 14:06:19,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:19,440 INFO L85 PathProgramCache]: Analyzing trace with hash 2028927118, now seen corresponding path program 1 times [2024-11-19 14:06:19,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:19,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576280667] [2024-11-19 14:06:19,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:19,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:19,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:19,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:19,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:19,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576280667] [2024-11-19 14:06:19,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576280667] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:19,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:19,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:06:19,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710948429] [2024-11-19 14:06:19,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:19,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:06:19,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:19,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:06:19,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:06:19,580 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 89 [2024-11-19 14:06:19,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 108 transitions, 481 flow. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:19,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:19,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 89 [2024-11-19 14:06:19,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:20,320 INFO L124 PetriNetUnfolderBase]: 6263/10525 cut-off events. [2024-11-19 14:06:20,320 INFO L125 PetriNetUnfolderBase]: For 275/275 co-relation queries the response was YES. [2024-11-19 14:06:20,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19655 conditions, 10525 events. 6263/10525 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 624. Compared 76615 event pairs, 5675 based on Foata normal form. 154/7214 useless extension candidates. Maximal degree in co-relation 19497. Up to 8286 conditions per place. [2024-11-19 14:06:20,363 INFO L140 encePairwiseOnDemand]: 76/89 looper letters, 120 selfloop transitions, 10 changer transitions 1/156 dead transitions. [2024-11-19 14:06:20,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 156 transitions, 995 flow [2024-11-19 14:06:20,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:06:20,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:06:20,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 241 transitions. [2024-11-19 14:06:20,364 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5415730337078651 [2024-11-19 14:06:20,364 INFO L175 Difference]: Start difference. First operand has 89 places, 108 transitions, 481 flow. Second operand 5 states and 241 transitions. [2024-11-19 14:06:20,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 156 transitions, 995 flow [2024-11-19 14:06:20,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 156 transitions, 935 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-11-19 14:06:20,368 INFO L231 Difference]: Finished difference. Result has 93 places, 115 transitions, 548 flow [2024-11-19 14:06:20,368 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=548, PETRI_PLACES=93, PETRI_TRANSITIONS=115} [2024-11-19 14:06:20,369 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 7 predicate places. [2024-11-19 14:06:20,369 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 115 transitions, 548 flow [2024-11-19 14:06:20,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:20,369 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:20,369 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:20,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 14:06:20,370 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-19 14:06:20,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:20,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1595410801, now seen corresponding path program 1 times [2024-11-19 14:06:20,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:20,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649687155] [2024-11-19 14:06:20,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:20,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:20,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:20,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:20,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:20,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649687155] [2024-11-19 14:06:20,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649687155] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:06:20,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098574267] [2024-11-19 14:06:20,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:20,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:20,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:20,499 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:06:20,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 14:06:20,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:20,572 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 14:06:20,573 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:06:20,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:06:20,587 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:06:20,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098574267] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:20,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:06:20,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-19 14:06:20,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475122672] [2024-11-19 14:06:20,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:20,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:06:20,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:20,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:06:20,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-19 14:06:20,589 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 89 [2024-11-19 14:06:20,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 115 transitions, 548 flow. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:20,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:20,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 89 [2024-11-19 14:06:20,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:21,067 INFO L124 PetriNetUnfolderBase]: 4698/8093 cut-off events. [2024-11-19 14:06:21,068 INFO L125 PetriNetUnfolderBase]: For 825/825 co-relation queries the response was YES. [2024-11-19 14:06:21,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15626 conditions, 8093 events. 4698/8093 cut-off events. For 825/825 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 57286 event pairs, 4210 based on Foata normal form. 0/5755 useless extension candidates. Maximal degree in co-relation 15470. Up to 6524 conditions per place. [2024-11-19 14:06:21,109 INFO L140 encePairwiseOnDemand]: 85/89 looper letters, 86 selfloop transitions, 1 changer transitions 0/112 dead transitions. [2024-11-19 14:06:21,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 112 transitions, 710 flow [2024-11-19 14:06:21,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:06:21,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:06:21,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 140 transitions. [2024-11-19 14:06:21,111 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5243445692883895 [2024-11-19 14:06:21,111 INFO L175 Difference]: Start difference. First operand has 93 places, 115 transitions, 548 flow. Second operand 3 states and 140 transitions. [2024-11-19 14:06:21,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 112 transitions, 710 flow [2024-11-19 14:06:21,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 112 transitions, 706 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-19 14:06:21,115 INFO L231 Difference]: Finished difference. Result has 91 places, 112 transitions, 534 flow [2024-11-19 14:06:21,116 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=534, PETRI_PLACES=91, PETRI_TRANSITIONS=112} [2024-11-19 14:06:21,117 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 5 predicate places. [2024-11-19 14:06:21,117 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 112 transitions, 534 flow [2024-11-19 14:06:21,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:21,117 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:21,117 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:21,134 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 14:06:21,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:21,318 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-19 14:06:21,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:21,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1529118875, now seen corresponding path program 1 times [2024-11-19 14:06:21,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:21,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241981362] [2024-11-19 14:06:21,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:21,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:21,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:21,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:21,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:21,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241981362] [2024-11-19 14:06:21,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241981362] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:21,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:21,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:06:21,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486302654] [2024-11-19 14:06:21,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:21,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:06:21,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:21,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:06:21,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:06:21,369 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 89 [2024-11-19 14:06:21,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 112 transitions, 534 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:21,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:21,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 89 [2024-11-19 14:06:21,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:22,006 INFO L124 PetriNetUnfolderBase]: 4250/6981 cut-off events. [2024-11-19 14:06:22,007 INFO L125 PetriNetUnfolderBase]: For 863/863 co-relation queries the response was YES. [2024-11-19 14:06:22,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14189 conditions, 6981 events. 4250/6981 cut-off events. For 863/863 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 44499 event pairs, 1558 based on Foata normal form. 105/5122 useless extension candidates. Maximal degree in co-relation 14173. Up to 4941 conditions per place. [2024-11-19 14:06:22,045 INFO L140 encePairwiseOnDemand]: 85/89 looper letters, 103 selfloop transitions, 2 changer transitions 1/131 dead transitions. [2024-11-19 14:06:22,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 131 transitions, 793 flow [2024-11-19 14:06:22,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:06:22,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:06:22,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 158 transitions. [2024-11-19 14:06:22,047 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5917602996254682 [2024-11-19 14:06:22,047 INFO L175 Difference]: Start difference. First operand has 91 places, 112 transitions, 534 flow. Second operand 3 states and 158 transitions. [2024-11-19 14:06:22,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 131 transitions, 793 flow [2024-11-19 14:06:22,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 131 transitions, 792 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:06:22,050 INFO L231 Difference]: Finished difference. Result has 93 places, 112 transitions, 538 flow [2024-11-19 14:06:22,050 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=533, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=538, PETRI_PLACES=93, PETRI_TRANSITIONS=112} [2024-11-19 14:06:22,051 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 7 predicate places. [2024-11-19 14:06:22,051 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 112 transitions, 538 flow [2024-11-19 14:06:22,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:22,051 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:22,052 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:22,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 14:06:22,052 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-19 14:06:22,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:22,052 INFO L85 PathProgramCache]: Analyzing trace with hash -2081871629, now seen corresponding path program 1 times [2024-11-19 14:06:22,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:22,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152340603] [2024-11-19 14:06:22,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:22,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:22,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:22,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:06:22,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:22,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152340603] [2024-11-19 14:06:22,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152340603] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:22,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:22,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:06:22,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914091808] [2024-11-19 14:06:22,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:22,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:06:22,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:22,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:06:22,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:06:22,096 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 89 [2024-11-19 14:06:22,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 112 transitions, 538 flow. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:22,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:22,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 89 [2024-11-19 14:06:22,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:22,930 INFO L124 PetriNetUnfolderBase]: 4766/8152 cut-off events. [2024-11-19 14:06:22,930 INFO L125 PetriNetUnfolderBase]: For 1495/1525 co-relation queries the response was YES. [2024-11-19 14:06:22,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17042 conditions, 8152 events. 4766/8152 cut-off events. For 1495/1525 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 54932 event pairs, 2202 based on Foata normal form. 150/6222 useless extension candidates. Maximal degree in co-relation 17024. Up to 3805 conditions per place. [2024-11-19 14:06:23,039 INFO L140 encePairwiseOnDemand]: 85/89 looper letters, 106 selfloop transitions, 2 changer transitions 0/133 dead transitions. [2024-11-19 14:06:23,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 133 transitions, 810 flow [2024-11-19 14:06:23,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:06:23,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:06:23,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 160 transitions. [2024-11-19 14:06:23,044 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.599250936329588 [2024-11-19 14:06:23,044 INFO L175 Difference]: Start difference. First operand has 93 places, 112 transitions, 538 flow. Second operand 3 states and 160 transitions. [2024-11-19 14:06:23,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 133 transitions, 810 flow [2024-11-19 14:06:23,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 133 transitions, 808 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:06:23,052 INFO L231 Difference]: Finished difference. Result has 95 places, 113 transitions, 550 flow [2024-11-19 14:06:23,052 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=536, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=550, PETRI_PLACES=95, PETRI_TRANSITIONS=113} [2024-11-19 14:06:23,053 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 9 predicate places. [2024-11-19 14:06:23,054 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 113 transitions, 550 flow [2024-11-19 14:06:23,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:23,054 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:23,054 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:23,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 14:06:23,058 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-19 14:06:23,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:23,059 INFO L85 PathProgramCache]: Analyzing trace with hash -974348692, now seen corresponding path program 1 times [2024-11-19 14:06:23,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:23,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471753281] [2024-11-19 14:06:23,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:23,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:23,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:23,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:06:23,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:23,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471753281] [2024-11-19 14:06:23,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471753281] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:23,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:23,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:06:23,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733401872] [2024-11-19 14:06:23,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:23,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:06:23,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:23,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:06:23,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:06:23,170 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 89 [2024-11-19 14:06:23,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 113 transitions, 550 flow. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:23,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:23,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 89 [2024-11-19 14:06:23,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:23,612 INFO L124 PetriNetUnfolderBase]: 3369/6219 cut-off events. [2024-11-19 14:06:23,613 INFO L125 PetriNetUnfolderBase]: For 1085/1088 co-relation queries the response was YES. [2024-11-19 14:06:23,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12986 conditions, 6219 events. 3369/6219 cut-off events. For 1085/1088 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 43567 event pairs, 1984 based on Foata normal form. 15/4739 useless extension candidates. Maximal degree in co-relation 12966. Up to 4731 conditions per place. [2024-11-19 14:06:23,645 INFO L140 encePairwiseOnDemand]: 85/89 looper letters, 95 selfloop transitions, 3 changer transitions 0/123 dead transitions. [2024-11-19 14:06:23,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 123 transitions, 773 flow [2024-11-19 14:06:23,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:06:23,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:06:23,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 148 transitions. [2024-11-19 14:06:23,646 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5543071161048689 [2024-11-19 14:06:23,646 INFO L175 Difference]: Start difference. First operand has 95 places, 113 transitions, 550 flow. Second operand 3 states and 148 transitions. [2024-11-19 14:06:23,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 123 transitions, 773 flow [2024-11-19 14:06:23,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 123 transitions, 771 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:06:23,650 INFO L231 Difference]: Finished difference. Result has 97 places, 115 transitions, 571 flow [2024-11-19 14:06:23,650 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=571, PETRI_PLACES=97, PETRI_TRANSITIONS=115} [2024-11-19 14:06:23,650 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 11 predicate places. [2024-11-19 14:06:23,651 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 115 transitions, 571 flow [2024-11-19 14:06:23,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:23,651 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:23,651 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-19 14:06:23,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 14:06:23,651 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-19 14:06:23,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:23,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1090455241, now seen corresponding path program 2 times [2024-11-19 14:06:23,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:23,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278143866] [2024-11-19 14:06:23,652 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:06:23,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:23,662 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:06:23,662 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:06:23,689 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:06:23,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:23,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278143866] [2024-11-19 14:06:23,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278143866] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:06:23,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139523046] [2024-11-19 14:06:23,691 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:06:23,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:23,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:23,693 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:06:23,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 14:06:23,763 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:06:23,763 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:06:23,763 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 14:06:23,764 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:06:23,785 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:06:23,785 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:06:23,802 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:06:23,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139523046] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:06:23,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:06:23,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-11-19 14:06:23,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056707730] [2024-11-19 14:06:23,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:06:23,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:06:23,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:23,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:06:23,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:06:23,812 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 89 [2024-11-19 14:06:23,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 115 transitions, 571 flow. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:23,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:23,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 89 [2024-11-19 14:06:23,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:24,219 INFO L124 PetriNetUnfolderBase]: 3369/6229 cut-off events. [2024-11-19 14:06:24,220 INFO L125 PetriNetUnfolderBase]: For 1924/1924 co-relation queries the response was YES. [2024-11-19 14:06:24,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13439 conditions, 6229 events. 3369/6229 cut-off events. For 1924/1924 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 43885 event pairs, 2811 based on Foata normal form. 1/4732 useless extension candidates. Maximal degree in co-relation 13417. Up to 4977 conditions per place. [2024-11-19 14:06:24,249 INFO L140 encePairwiseOnDemand]: 84/89 looper letters, 76 selfloop transitions, 16 changer transitions 0/114 dead transitions. [2024-11-19 14:06:24,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 114 transitions, 745 flow [2024-11-19 14:06:24,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:06:24,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:06:24,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 147 transitions. [2024-11-19 14:06:24,250 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41292134831460675 [2024-11-19 14:06:24,250 INFO L175 Difference]: Start difference. First operand has 97 places, 115 transitions, 571 flow. Second operand 4 states and 147 transitions. [2024-11-19 14:06:24,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 114 transitions, 745 flow [2024-11-19 14:06:24,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 114 transitions, 736 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-19 14:06:24,255 INFO L231 Difference]: Finished difference. Result has 98 places, 114 transitions, 584 flow [2024-11-19 14:06:24,256 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=584, PETRI_PLACES=98, PETRI_TRANSITIONS=114} [2024-11-19 14:06:24,256 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 12 predicate places. [2024-11-19 14:06:24,256 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 114 transitions, 584 flow [2024-11-19 14:06:24,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:24,257 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:24,257 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:24,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-19 14:06:24,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:24,458 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-19 14:06:24,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:24,458 INFO L85 PathProgramCache]: Analyzing trace with hash 682300369, now seen corresponding path program 1 times [2024-11-19 14:06:24,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:24,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267366101] [2024-11-19 14:06:24,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:24,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:24,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:24,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:06:24,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:24,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267366101] [2024-11-19 14:06:24,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267366101] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:24,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:24,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:06:24,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092736505] [2024-11-19 14:06:24,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:24,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:06:24,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:24,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:06:24,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:06:24,609 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 89 [2024-11-19 14:06:24,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 114 transitions, 584 flow. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:24,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:24,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 89 [2024-11-19 14:06:24,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:25,064 INFO L124 PetriNetUnfolderBase]: 3561/6630 cut-off events. [2024-11-19 14:06:25,065 INFO L125 PetriNetUnfolderBase]: For 1312/1314 co-relation queries the response was YES. [2024-11-19 14:06:25,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13951 conditions, 6630 events. 3561/6630 cut-off events. For 1312/1314 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 46291 event pairs, 2996 based on Foata normal form. 40/5172 useless extension candidates. Maximal degree in co-relation 13928. Up to 4975 conditions per place. [2024-11-19 14:06:25,092 INFO L140 encePairwiseOnDemand]: 80/89 looper letters, 91 selfloop transitions, 10 changer transitions 20/145 dead transitions. [2024-11-19 14:06:25,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 145 transitions, 979 flow [2024-11-19 14:06:25,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:06:25,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:06:25,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 227 transitions. [2024-11-19 14:06:25,094 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5101123595505618 [2024-11-19 14:06:25,094 INFO L175 Difference]: Start difference. First operand has 98 places, 114 transitions, 584 flow. Second operand 5 states and 227 transitions. [2024-11-19 14:06:25,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 145 transitions, 979 flow [2024-11-19 14:06:25,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 145 transitions, 947 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 14:06:25,099 INFO L231 Difference]: Finished difference. Result has 101 places, 116 transitions, 611 flow [2024-11-19 14:06:25,099 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=611, PETRI_PLACES=101, PETRI_TRANSITIONS=116} [2024-11-19 14:06:25,100 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 15 predicate places. [2024-11-19 14:06:25,100 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 116 transitions, 611 flow [2024-11-19 14:06:25,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:25,100 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:25,100 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1] [2024-11-19 14:06:25,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 14:06:25,100 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-19 14:06:25,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:25,101 INFO L85 PathProgramCache]: Analyzing trace with hash 272759149, now seen corresponding path program 1 times [2024-11-19 14:06:25,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:25,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899600191] [2024-11-19 14:06:25,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:25,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:25,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:25,217 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:25,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:25,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899600191] [2024-11-19 14:06:25,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899600191] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:06:25,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249315036] [2024-11-19 14:06:25,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:25,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:25,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:25,221 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:06:25,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 14:06:25,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:25,302 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-19 14:06:25,303 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:06:25,358 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:25,358 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:06:25,523 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:25,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249315036] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:06:25,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:06:25,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-11-19 14:06:25,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922260189] [2024-11-19 14:06:25,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:06:25,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-19 14:06:25,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:25,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-19 14:06:25,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-11-19 14:06:25,586 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 89 [2024-11-19 14:06:25,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 116 transitions, 611 flow. Second operand has 24 states, 24 states have (on average 26.083333333333332) internal successors, (626), 24 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:25,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:25,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 89 [2024-11-19 14:06:25,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:26,306 INFO L124 PetriNetUnfolderBase]: 3602/6789 cut-off events. [2024-11-19 14:06:26,306 INFO L125 PetriNetUnfolderBase]: For 2168/2168 co-relation queries the response was YES. [2024-11-19 14:06:26,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15188 conditions, 6789 events. 3602/6789 cut-off events. For 2168/2168 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 48231 event pairs, 2996 based on Foata normal form. 36/5300 useless extension candidates. Maximal degree in co-relation 15164. Up to 5312 conditions per place. [2024-11-19 14:06:26,337 INFO L140 encePairwiseOnDemand]: 77/89 looper letters, 49 selfloop transitions, 105 changer transitions 0/176 dead transitions. [2024-11-19 14:06:26,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 176 transitions, 1357 flow [2024-11-19 14:06:26,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-19 14:06:26,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-19 14:06:26,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 698 transitions. [2024-11-19 14:06:26,339 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3564862104187947 [2024-11-19 14:06:26,339 INFO L175 Difference]: Start difference. First operand has 101 places, 116 transitions, 611 flow. Second operand 22 states and 698 transitions. [2024-11-19 14:06:26,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 176 transitions, 1357 flow [2024-11-19 14:06:26,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 176 transitions, 1342 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-19 14:06:26,347 INFO L231 Difference]: Finished difference. Result has 127 places, 176 transitions, 1318 flow [2024-11-19 14:06:26,347 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1318, PETRI_PLACES=127, PETRI_TRANSITIONS=176} [2024-11-19 14:06:26,347 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 41 predicate places. [2024-11-19 14:06:26,347 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 176 transitions, 1318 flow [2024-11-19 14:06:26,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 26.083333333333332) internal successors, (626), 24 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:26,348 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:26,348 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:26,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-19 14:06:26,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-19 14:06:26,553 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-19 14:06:26,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:26,553 INFO L85 PathProgramCache]: Analyzing trace with hash -843405047, now seen corresponding path program 1 times [2024-11-19 14:06:26,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:26,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042197459] [2024-11-19 14:06:26,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:26,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:26,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:26,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:06:26,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:26,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042197459] [2024-11-19 14:06:26,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042197459] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:06:26,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622141483] [2024-11-19 14:06:26,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:26,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:26,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:26,666 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:06:26,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 14:06:26,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:26,778 INFO L255 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 14:06:26,780 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:06:26,828 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:06:26,829 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:06:26,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622141483] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:26,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:06:26,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2024-11-19 14:06:26,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970302442] [2024-11-19 14:06:26,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:26,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:06:26,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:26,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:06:26,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-19 14:06:26,830 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 89 [2024-11-19 14:06:26,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 176 transitions, 1318 flow. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:26,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:26,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 89 [2024-11-19 14:06:26,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:27,226 INFO L124 PetriNetUnfolderBase]: 2808/5400 cut-off events. [2024-11-19 14:06:27,226 INFO L125 PetriNetUnfolderBase]: For 2147/2147 co-relation queries the response was YES. [2024-11-19 14:06:27,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12299 conditions, 5400 events. 2808/5400 cut-off events. For 2147/2147 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 36963 event pairs, 2299 based on Foata normal form. 0/4461 useless extension candidates. Maximal degree in co-relation 12268. Up to 4321 conditions per place. [2024-11-19 14:06:27,263 INFO L140 encePairwiseOnDemand]: 86/89 looper letters, 149 selfloop transitions, 1 changer transitions 0/174 dead transitions. [2024-11-19 14:06:27,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 174 transitions, 1610 flow [2024-11-19 14:06:27,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:06:27,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:06:27,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 137 transitions. [2024-11-19 14:06:27,265 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5131086142322098 [2024-11-19 14:06:27,265 INFO L175 Difference]: Start difference. First operand has 127 places, 176 transitions, 1318 flow. Second operand 3 states and 137 transitions. [2024-11-19 14:06:27,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 174 transitions, 1610 flow [2024-11-19 14:06:27,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 174 transitions, 1311 flow, removed 67 selfloop flow, removed 10 redundant places. [2024-11-19 14:06:27,277 INFO L231 Difference]: Finished difference. Result has 117 places, 174 transitions, 1013 flow [2024-11-19 14:06:27,277 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=1011, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1013, PETRI_PLACES=117, PETRI_TRANSITIONS=174} [2024-11-19 14:06:27,278 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 31 predicate places. [2024-11-19 14:06:27,278 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 174 transitions, 1013 flow [2024-11-19 14:06:27,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:27,278 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:27,278 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:27,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-19 14:06:27,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:27,480 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-19 14:06:27,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:27,480 INFO L85 PathProgramCache]: Analyzing trace with hash -843405050, now seen corresponding path program 1 times [2024-11-19 14:06:27,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:27,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794465999] [2024-11-19 14:06:27,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:27,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:27,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:27,765 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:06:27,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:27,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794465999] [2024-11-19 14:06:27,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794465999] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:06:27,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830137041] [2024-11-19 14:06:27,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:27,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:27,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:27,768 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:06:27,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 14:06:27,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:27,856 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-19 14:06:27,857 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:06:27,877 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 [2024-11-19 14:06:27,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-19 14:06:27,943 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 14:06:27,943 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 [2024-11-19 14:06:27,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-19 14:06:28,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:28,053 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:06:28,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:06:28,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830137041] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 14:06:28,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 14:06:28,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 8] total 19 [2024-11-19 14:06:28,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701025307] [2024-11-19 14:06:28,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:28,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:06:28,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:28,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:06:28,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2024-11-19 14:06:28,197 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 89 [2024-11-19 14:06:28,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 174 transitions, 1013 flow. Second operand has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:28,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:28,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 89 [2024-11-19 14:06:28,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:28,651 INFO L124 PetriNetUnfolderBase]: 3182/5779 cut-off events. [2024-11-19 14:06:28,651 INFO L125 PetriNetUnfolderBase]: For 1508/1508 co-relation queries the response was YES. [2024-11-19 14:06:28,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13017 conditions, 5779 events. 3182/5779 cut-off events. For 1508/1508 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 37522 event pairs, 1193 based on Foata normal form. 0/4862 useless extension candidates. Maximal degree in co-relation 12987. Up to 2852 conditions per place. [2024-11-19 14:06:28,678 INFO L140 encePairwiseOnDemand]: 79/89 looper letters, 170 selfloop transitions, 21 changer transitions 0/214 dead transitions. [2024-11-19 14:06:28,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 214 transitions, 1508 flow [2024-11-19 14:06:28,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:06:28,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:06:28,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 237 transitions. [2024-11-19 14:06:28,679 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5325842696629214 [2024-11-19 14:06:28,680 INFO L175 Difference]: Start difference. First operand has 117 places, 174 transitions, 1013 flow. Second operand 5 states and 237 transitions. [2024-11-19 14:06:28,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 214 transitions, 1508 flow [2024-11-19 14:06:28,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 214 transitions, 1507 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:06:28,687 INFO L231 Difference]: Finished difference. Result has 122 places, 178 transitions, 1104 flow [2024-11-19 14:06:28,687 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=1012, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1104, PETRI_PLACES=122, PETRI_TRANSITIONS=178} [2024-11-19 14:06:28,687 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 36 predicate places. [2024-11-19 14:06:28,688 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 178 transitions, 1104 flow [2024-11-19 14:06:28,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:28,688 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:28,688 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:28,701 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 14:06:28,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:28,889 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-19 14:06:28,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:28,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1449927815, now seen corresponding path program 1 times [2024-11-19 14:06:28,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:28,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232508507] [2024-11-19 14:06:28,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:28,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:28,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:29,311 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:06:29,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:29,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232508507] [2024-11-19 14:06:29,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232508507] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:06:29,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366600159] [2024-11-19 14:06:29,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:29,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:29,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:29,316 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:06:29,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 14:06:29,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:29,412 INFO L255 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 14:06:29,414 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:06:29,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:06:29,452 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:06:29,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366600159] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:29,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:06:29,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 11 [2024-11-19 14:06:29,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884893796] [2024-11-19 14:06:29,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:29,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:06:29,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:29,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:06:29,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-19 14:06:29,463 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 89 [2024-11-19 14:06:29,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 178 transitions, 1104 flow. Second operand has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:29,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:29,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 89 [2024-11-19 14:06:29,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:30,042 INFO L124 PetriNetUnfolderBase]: 3937/7334 cut-off events. [2024-11-19 14:06:30,042 INFO L125 PetriNetUnfolderBase]: For 4445/4445 co-relation queries the response was YES. [2024-11-19 14:06:30,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17598 conditions, 7334 events. 3937/7334 cut-off events. For 4445/4445 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 50886 event pairs, 1370 based on Foata normal form. 6/6384 useless extension candidates. Maximal degree in co-relation 17565. Up to 2626 conditions per place. [2024-11-19 14:06:30,091 INFO L140 encePairwiseOnDemand]: 82/89 looper letters, 186 selfloop transitions, 7 changer transitions 0/216 dead transitions. [2024-11-19 14:06:30,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 216 transitions, 1591 flow [2024-11-19 14:06:30,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:06:30,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:06:30,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 236 transitions. [2024-11-19 14:06:30,092 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5303370786516854 [2024-11-19 14:06:30,093 INFO L175 Difference]: Start difference. First operand has 122 places, 178 transitions, 1104 flow. Second operand 5 states and 236 transitions. [2024-11-19 14:06:30,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 216 transitions, 1591 flow [2024-11-19 14:06:30,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 216 transitions, 1586 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-19 14:06:30,101 INFO L231 Difference]: Finished difference. Result has 127 places, 179 transitions, 1130 flow [2024-11-19 14:06:30,102 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=1093, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1130, PETRI_PLACES=127, PETRI_TRANSITIONS=179} [2024-11-19 14:06:30,102 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 41 predicate places. [2024-11-19 14:06:30,102 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 179 transitions, 1130 flow [2024-11-19 14:06:30,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:30,103 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:30,103 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:30,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-19 14:06:30,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-19 14:06:30,307 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-19 14:06:30,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:30,307 INFO L85 PathProgramCache]: Analyzing trace with hash 52941874, now seen corresponding path program 1 times [2024-11-19 14:06:30,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:30,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066903005] [2024-11-19 14:06:30,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:30,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:30,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:30,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:30,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:30,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066903005] [2024-11-19 14:06:30,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066903005] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:06:30,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607589397] [2024-11-19 14:06:30,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:30,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:30,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:30,846 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:06:30,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 14:06:30,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:30,941 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-19 14:06:30,942 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:06:30,950 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 [2024-11-19 14:06:30,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-19 14:06:31,050 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 14:06:31,051 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 [2024-11-19 14:06:31,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-19 14:06:31,151 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:31,151 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:06:31,309 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:06:31,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607589397] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 14:06:31,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 14:06:31,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8, 8] total 19 [2024-11-19 14:06:31,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330898902] [2024-11-19 14:06:31,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:31,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:06:31,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:31,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:06:31,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2024-11-19 14:06:31,320 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 89 [2024-11-19 14:06:31,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 179 transitions, 1130 flow. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:31,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:31,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 89 [2024-11-19 14:06:31,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:31,992 INFO L124 PetriNetUnfolderBase]: 4138/7468 cut-off events. [2024-11-19 14:06:31,993 INFO L125 PetriNetUnfolderBase]: For 5773/5773 co-relation queries the response was YES. [2024-11-19 14:06:32,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18982 conditions, 7468 events. 4138/7468 cut-off events. For 5773/5773 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 50665 event pairs, 1703 based on Foata normal form. 14/6456 useless extension candidates. Maximal degree in co-relation 18946. Up to 4129 conditions per place. [2024-11-19 14:06:32,047 INFO L140 encePairwiseOnDemand]: 79/89 looper letters, 172 selfloop transitions, 22 changer transitions 0/218 dead transitions. [2024-11-19 14:06:32,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 218 transitions, 1626 flow [2024-11-19 14:06:32,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:06:32,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:06:32,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 239 transitions. [2024-11-19 14:06:32,048 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5370786516853933 [2024-11-19 14:06:32,048 INFO L175 Difference]: Start difference. First operand has 127 places, 179 transitions, 1130 flow. Second operand 5 states and 239 transitions. [2024-11-19 14:06:32,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 218 transitions, 1626 flow [2024-11-19 14:06:32,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 218 transitions, 1621 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 14:06:32,057 INFO L231 Difference]: Finished difference. Result has 131 places, 180 transitions, 1207 flow [2024-11-19 14:06:32,057 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=1125, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1207, PETRI_PLACES=131, PETRI_TRANSITIONS=180} [2024-11-19 14:06:32,058 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 45 predicate places. [2024-11-19 14:06:32,058 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 180 transitions, 1207 flow [2024-11-19 14:06:32,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:32,058 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:32,058 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:32,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-19 14:06:32,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-19 14:06:32,259 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-19 14:06:32,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:32,259 INFO L85 PathProgramCache]: Analyzing trace with hash 53345495, now seen corresponding path program 1 times [2024-11-19 14:06:32,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:32,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883470933] [2024-11-19 14:06:32,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:32,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:32,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:32,512 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:06:32,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:32,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883470933] [2024-11-19 14:06:32,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883470933] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:06:32,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602523760] [2024-11-19 14:06:32,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:32,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:32,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:32,515 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:06:32,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 14:06:32,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:32,610 INFO L255 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 14:06:32,616 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:06:32,653 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:06:32,654 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:06:32,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602523760] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:32,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:06:32,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 11 [2024-11-19 14:06:32,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471523286] [2024-11-19 14:06:32,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:32,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:06:32,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:32,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:06:32,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-19 14:06:32,665 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 89 [2024-11-19 14:06:32,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 180 transitions, 1207 flow. Second operand has 5 states, 5 states have (on average 32.4) internal successors, (162), 5 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:32,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:32,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 89 [2024-11-19 14:06:32,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:33,443 INFO L124 PetriNetUnfolderBase]: 4431/7824 cut-off events. [2024-11-19 14:06:33,443 INFO L125 PetriNetUnfolderBase]: For 15124/15136 co-relation queries the response was YES. [2024-11-19 14:06:33,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21119 conditions, 7824 events. 4431/7824 cut-off events. For 15124/15136 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 52068 event pairs, 1973 based on Foata normal form. 83/6879 useless extension candidates. Maximal degree in co-relation 21080. Up to 3675 conditions per place. [2024-11-19 14:06:33,487 INFO L140 encePairwiseOnDemand]: 81/89 looper letters, 190 selfloop transitions, 7 changer transitions 0/219 dead transitions. [2024-11-19 14:06:33,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 219 transitions, 1699 flow [2024-11-19 14:06:33,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:06:33,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:06:33,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 234 transitions. [2024-11-19 14:06:33,488 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5258426966292135 [2024-11-19 14:06:33,488 INFO L175 Difference]: Start difference. First operand has 131 places, 180 transitions, 1207 flow. Second operand 5 states and 234 transitions. [2024-11-19 14:06:33,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 219 transitions, 1699 flow [2024-11-19 14:06:33,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 219 transitions, 1659 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-19 14:06:33,501 INFO L231 Difference]: Finished difference. Result has 135 places, 180 transitions, 1190 flow [2024-11-19 14:06:33,501 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=1157, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1190, PETRI_PLACES=135, PETRI_TRANSITIONS=180} [2024-11-19 14:06:33,501 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 49 predicate places. [2024-11-19 14:06:33,502 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 180 transitions, 1190 flow [2024-11-19 14:06:33,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.4) internal successors, (162), 5 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:33,502 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:33,502 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:33,516 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-19 14:06:33,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-19 14:06:33,703 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-19 14:06:33,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:33,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1401078842, now seen corresponding path program 1 times [2024-11-19 14:06:33,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:33,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029824020] [2024-11-19 14:06:33,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:33,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:33,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:33,790 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:06:33,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:33,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029824020] [2024-11-19 14:06:33,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029824020] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:33,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:33,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:06:33,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564334573] [2024-11-19 14:06:33,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:33,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:06:33,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:33,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:06:33,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:06:33,802 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 89 [2024-11-19 14:06:33,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 180 transitions, 1190 flow. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:33,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:33,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 89 [2024-11-19 14:06:33,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:34,587 INFO L124 PetriNetUnfolderBase]: 5129/8505 cut-off events. [2024-11-19 14:06:34,587 INFO L125 PetriNetUnfolderBase]: For 10690/10690 co-relation queries the response was YES. [2024-11-19 14:06:34,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23228 conditions, 8505 events. 5129/8505 cut-off events. For 10690/10690 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 54818 event pairs, 1800 based on Foata normal form. 202/7434 useless extension candidates. Maximal degree in co-relation 23187. Up to 6005 conditions per place. [2024-11-19 14:06:34,657 INFO L140 encePairwiseOnDemand]: 85/89 looper letters, 186 selfloop transitions, 4 changer transitions 0/213 dead transitions. [2024-11-19 14:06:34,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 213 transitions, 1676 flow [2024-11-19 14:06:34,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:06:34,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:06:34,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 192 transitions. [2024-11-19 14:06:34,658 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5393258426966292 [2024-11-19 14:06:34,658 INFO L175 Difference]: Start difference. First operand has 135 places, 180 transitions, 1190 flow. Second operand 4 states and 192 transitions. [2024-11-19 14:06:34,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 213 transitions, 1676 flow [2024-11-19 14:06:34,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 213 transitions, 1668 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 14:06:34,673 INFO L231 Difference]: Finished difference. Result has 137 places, 181 transitions, 1202 flow [2024-11-19 14:06:34,673 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=1185, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1202, PETRI_PLACES=137, PETRI_TRANSITIONS=181} [2024-11-19 14:06:34,674 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 51 predicate places. [2024-11-19 14:06:34,674 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 181 transitions, 1202 flow [2024-11-19 14:06:34,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:34,674 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:34,674 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:34,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-19 14:06:34,674 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-19 14:06:34,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:34,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1236604459, now seen corresponding path program 1 times [2024-11-19 14:06:34,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:34,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321136468] [2024-11-19 14:06:34,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:34,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:34,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:34,942 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:06:34,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:34,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321136468] [2024-11-19 14:06:34,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321136468] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:06:34,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86496715] [2024-11-19 14:06:34,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:34,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:34,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:34,945 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:06:34,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 14:06:35,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:35,047 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-19 14:06:35,049 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:06:35,057 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 [2024-11-19 14:06:35,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-19 14:06:35,185 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 14:06:35,185 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 [2024-11-19 14:06:35,214 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 20 treesize of output 15 [2024-11-19 14:06:35,521 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:06:35,521 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:06:35,790 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_~q1_front~0_113 Int) (v_ArrVal_272 (Array Int Int)) (v_~q1_back~0_133 Int)) (let ((.cse0 (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_272) c_~q1~0.base))) (or (< v_~q1_front~0_113 0) (< (select .cse0 (+ c_~q1~0.offset (* v_~q1_front~0_113 4))) 2147483648) (< v_~q1_back~0_133 v_~q1_front~0_113) (not (= (select .cse0 (+ (* v_~q1_back~0_133 4) c_~q1~0.offset)) 2)) (< c_~n1~0 (+ v_~q1_back~0_133 1))))) is different from false [2024-11-19 14:06:35,965 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 14:06:35,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 42 [2024-11-19 14:06:35,991 INFO L349 Elim1Store]: treesize reduction 5, result has 80.0 percent of original size [2024-11-19 14:06:35,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 73 treesize of output 68 [2024-11-19 14:06:36,002 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-19 14:06:36,003 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 38 treesize of output 26 [2024-11-19 14:06:36,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2024-11-19 14:06:36,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86496715] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:06:36,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:06:36,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 26 [2024-11-19 14:06:36,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011675073] [2024-11-19 14:06:36,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:06:36,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-19 14:06:36,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:36,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-19 14:06:36,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=591, Unknown=1, NotChecked=50, Total=756 [2024-11-19 14:06:36,193 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 89 [2024-11-19 14:06:36,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 181 transitions, 1202 flow. Second operand has 28 states, 28 states have (on average 19.142857142857142) internal successors, (536), 28 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:36,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:36,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 89 [2024-11-19 14:06:36,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:40,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-19 14:06:45,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-19 14:06:54,799 INFO L124 PetriNetUnfolderBase]: 34857/59562 cut-off events. [2024-11-19 14:06:54,799 INFO L125 PetriNetUnfolderBase]: For 91662/91662 co-relation queries the response was YES. [2024-11-19 14:06:55,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153721 conditions, 59562 events. 34857/59562 cut-off events. For 91662/91662 co-relation queries the response was YES. Maximal size of possible extension queue 1778. Compared 519678 event pairs, 9539 based on Foata normal form. 1973/53272 useless extension candidates. Maximal degree in co-relation 153679. Up to 8293 conditions per place. [2024-11-19 14:06:55,507 INFO L140 encePairwiseOnDemand]: 71/89 looper letters, 645 selfloop transitions, 197 changer transitions 21/877 dead transitions. [2024-11-19 14:06:55,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 877 transitions, 6101 flow [2024-11-19 14:06:55,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-19 14:06:55,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2024-11-19 14:06:55,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 1505 transitions. [2024-11-19 14:06:55,518 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3382022471910112 [2024-11-19 14:06:55,519 INFO L175 Difference]: Start difference. First operand has 137 places, 181 transitions, 1202 flow. Second operand 50 states and 1505 transitions. [2024-11-19 14:06:55,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 877 transitions, 6101 flow [2024-11-19 14:06:55,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 877 transitions, 6069 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 14:06:55,633 INFO L231 Difference]: Finished difference. Result has 208 places, 325 transitions, 3001 flow [2024-11-19 14:06:55,633 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=1197, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=3001, PETRI_PLACES=208, PETRI_TRANSITIONS=325} [2024-11-19 14:06:55,633 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 122 predicate places. [2024-11-19 14:06:55,634 INFO L471 AbstractCegarLoop]: Abstraction has has 208 places, 325 transitions, 3001 flow [2024-11-19 14:06:55,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 19.142857142857142) internal successors, (536), 28 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:55,634 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:55,634 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:55,648 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-19 14:06:55,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-19 14:06:55,839 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-19 14:06:55,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:55,839 INFO L85 PathProgramCache]: Analyzing trace with hash 251526300, now seen corresponding path program 2 times [2024-11-19 14:06:55,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:55,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559461006] [2024-11-19 14:06:55,840 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:06:55,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:55,857 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:06:55,857 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:06:55,956 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 14:06:55,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:55,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559461006] [2024-11-19 14:06:55,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559461006] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:55,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:55,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 14:06:55,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235674290] [2024-11-19 14:06:55,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:55,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 14:06:55,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:55,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 14:06:55,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 14:06:55,981 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 89 [2024-11-19 14:06:55,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 325 transitions, 3001 flow. Second operand has 6 states, 6 states have (on average 30.833333333333332) internal successors, (185), 6 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:55,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:55,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 89 [2024-11-19 14:06:55,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:02,034 INFO L124 PetriNetUnfolderBase]: 24847/42843 cut-off events. [2024-11-19 14:07:02,040 INFO L125 PetriNetUnfolderBase]: For 213886/215030 co-relation queries the response was YES. [2024-11-19 14:07:02,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144414 conditions, 42843 events. 24847/42843 cut-off events. For 213886/215030 co-relation queries the response was YES. Maximal size of possible extension queue 1276. Compared 363776 event pairs, 14422 based on Foata normal form. 385/37290 useless extension candidates. Maximal degree in co-relation 144348. Up to 33481 conditions per place. [2024-11-19 14:07:02,781 INFO L140 encePairwiseOnDemand]: 82/89 looper letters, 328 selfloop transitions, 25 changer transitions 0/374 dead transitions. [2024-11-19 14:07:02,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 374 transitions, 3955 flow [2024-11-19 14:07:02,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:07:02,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:07:02,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 259 transitions. [2024-11-19 14:07:02,782 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4850187265917603 [2024-11-19 14:07:02,783 INFO L175 Difference]: Start difference. First operand has 208 places, 325 transitions, 3001 flow. Second operand 6 states and 259 transitions. [2024-11-19 14:07:02,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 374 transitions, 3955 flow [2024-11-19 14:07:03,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 374 transitions, 3817 flow, removed 47 selfloop flow, removed 4 redundant places. [2024-11-19 14:07:03,412 INFO L231 Difference]: Finished difference. Result has 209 places, 332 transitions, 3004 flow [2024-11-19 14:07:03,412 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=2871, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3004, PETRI_PLACES=209, PETRI_TRANSITIONS=332} [2024-11-19 14:07:03,413 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 123 predicate places. [2024-11-19 14:07:03,413 INFO L471 AbstractCegarLoop]: Abstraction has has 209 places, 332 transitions, 3004 flow [2024-11-19 14:07:03,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.833333333333332) internal successors, (185), 6 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:03,413 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:03,413 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:07:03,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-19 14:07:03,414 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-19 14:07:03,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:03,414 INFO L85 PathProgramCache]: Analyzing trace with hash 228486080, now seen corresponding path program 1 times [2024-11-19 14:07:03,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:03,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750778431] [2024-11-19 14:07:03,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:03,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:03,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:04,028 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:07:04,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:04,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750778431] [2024-11-19 14:07:04,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750778431] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:07:04,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213900877] [2024-11-19 14:07:04,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:04,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:04,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:07:04,030 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:07:04,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-19 14:07:04,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:04,136 INFO L255 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 14:07:04,137 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:07:04,250 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:07:04,251 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:07:04,323 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-19 14:07:04,323 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 24 treesize of output 11 [2024-11-19 14:07:04,332 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 14:07:04,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213900877] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 14:07:04,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 14:07:04,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10, 7] total 20 [2024-11-19 14:07:04,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523378130] [2024-11-19 14:07:04,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:07:04,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 14:07:04,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:04,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 14:07:04,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2024-11-19 14:07:04,350 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 89 [2024-11-19 14:07:04,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 332 transitions, 3004 flow. Second operand has 6 states, 6 states have (on average 32.0) internal successors, (192), 6 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:04,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:04,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 89 [2024-11-19 14:07:04,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:09,846 INFO L124 PetriNetUnfolderBase]: 22898/40681 cut-off events. [2024-11-19 14:07:09,846 INFO L125 PetriNetUnfolderBase]: For 194958/195434 co-relation queries the response was YES. [2024-11-19 14:07:10,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138743 conditions, 40681 events. 22898/40681 cut-off events. For 194958/195434 co-relation queries the response was YES. Maximal size of possible extension queue 1192. Compared 354874 event pairs, 6103 based on Foata normal form. 138/35809 useless extension candidates. Maximal degree in co-relation 138676. Up to 26917 conditions per place. [2024-11-19 14:07:10,555 INFO L140 encePairwiseOnDemand]: 81/89 looper letters, 309 selfloop transitions, 48 changer transitions 0/381 dead transitions. [2024-11-19 14:07:10,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 381 transitions, 3951 flow [2024-11-19 14:07:10,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:07:10,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:07:10,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 265 transitions. [2024-11-19 14:07:10,557 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49625468164794007 [2024-11-19 14:07:10,557 INFO L175 Difference]: Start difference. First operand has 209 places, 332 transitions, 3004 flow. Second operand 6 states and 265 transitions. [2024-11-19 14:07:10,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 381 transitions, 3951 flow [2024-11-19 14:07:11,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 381 transitions, 3923 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 14:07:11,158 INFO L231 Difference]: Finished difference. Result has 213 places, 338 transitions, 3159 flow [2024-11-19 14:07:11,158 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=2976, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3159, PETRI_PLACES=213, PETRI_TRANSITIONS=338} [2024-11-19 14:07:11,159 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 127 predicate places. [2024-11-19 14:07:11,159 INFO L471 AbstractCegarLoop]: Abstraction has has 213 places, 338 transitions, 3159 flow [2024-11-19 14:07:11,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.0) internal successors, (192), 6 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:11,159 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:11,159 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:07:11,172 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-19 14:07:11,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:11,360 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-19 14:07:11,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:11,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1491046918, now seen corresponding path program 2 times [2024-11-19 14:07:11,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:11,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397709850] [2024-11-19 14:07:11,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:07:11,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:11,375 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:07:11,376 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:07:11,609 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 14:07:11,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:11,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397709850] [2024-11-19 14:07:11,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397709850] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:07:11,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:07:11,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 14:07:11,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232575833] [2024-11-19 14:07:11,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:07:11,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 14:07:11,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:11,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 14:07:11,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 14:07:11,634 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 89 [2024-11-19 14:07:11,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 338 transitions, 3159 flow. Second operand has 6 states, 6 states have (on average 31.0) internal successors, (186), 6 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:11,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:11,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 89 [2024-11-19 14:07:11,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:18,034 INFO L124 PetriNetUnfolderBase]: 27111/46604 cut-off events. [2024-11-19 14:07:18,034 INFO L125 PetriNetUnfolderBase]: For 223201/223225 co-relation queries the response was YES. [2024-11-19 14:07:18,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154919 conditions, 46604 events. 27111/46604 cut-off events. For 223201/223225 co-relation queries the response was YES. Maximal size of possible extension queue 1345. Compared 400968 event pairs, 15722 based on Foata normal form. 138/40448 useless extension candidates. Maximal degree in co-relation 154850. Up to 36397 conditions per place. [2024-11-19 14:07:19,191 INFO L140 encePairwiseOnDemand]: 83/89 looper letters, 331 selfloop transitions, 19 changer transitions 1/374 dead transitions. [2024-11-19 14:07:19,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 374 transitions, 3961 flow [2024-11-19 14:07:19,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:07:19,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:07:19,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 256 transitions. [2024-11-19 14:07:19,192 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4794007490636704 [2024-11-19 14:07:19,192 INFO L175 Difference]: Start difference. First operand has 213 places, 338 transitions, 3159 flow. Second operand 6 states and 256 transitions. [2024-11-19 14:07:19,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 374 transitions, 3961 flow [2024-11-19 14:07:19,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 374 transitions, 3927 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-11-19 14:07:19,815 INFO L231 Difference]: Finished difference. Result has 215 places, 338 transitions, 3168 flow [2024-11-19 14:07:19,815 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=3125, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3168, PETRI_PLACES=215, PETRI_TRANSITIONS=338} [2024-11-19 14:07:19,815 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 129 predicate places. [2024-11-19 14:07:19,816 INFO L471 AbstractCegarLoop]: Abstraction has has 215 places, 338 transitions, 3168 flow [2024-11-19 14:07:19,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.0) internal successors, (186), 6 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:19,816 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:19,816 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:07:19,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-19 14:07:19,816 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-19 14:07:19,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:19,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1441203912, now seen corresponding path program 1 times [2024-11-19 14:07:19,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:19,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253197239] [2024-11-19 14:07:19,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:19,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:19,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:19,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:07:19,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:19,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253197239] [2024-11-19 14:07:19,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253197239] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:07:19,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:07:19,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:07:19,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292263988] [2024-11-19 14:07:19,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:07:19,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:07:19,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:19,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:07:19,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:07:19,880 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 89 [2024-11-19 14:07:19,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 338 transitions, 3168 flow. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:19,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:19,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 89 [2024-11-19 14:07:19,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand