./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-name-comparator-trans.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 362ca5c35cce683744d8d619a442f154ce469608d45ae43ff282ddf886694959 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 22:22:11,320 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 22:22:11,396 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-10 22:22:11,404 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 22:22:11,404 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 22:22:11,428 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 22:22:11,429 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 22:22:11,429 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 22:22:11,429 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 22:22:11,430 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 22:22:11,430 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 22:22:11,430 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 22:22:11,431 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 22:22:11,431 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 22:22:11,432 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 22:22:11,433 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 22:22:11,435 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 22:22:11,435 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 22:22:11,438 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 22:22:11,439 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 22:22:11,439 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 22:22:11,439 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 22:22:11,440 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 22:22:11,440 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 22:22:11,440 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 22:22:11,440 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-10 22:22:11,440 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 22:22:11,441 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 22:22:11,441 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 22:22:11,441 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 22:22:11,441 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 22:22:11,441 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 22:22:11,442 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 22:22:11,442 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 22:22:11,442 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:22:11,442 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 22:22:11,443 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 22:22:11,443 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 22:22:11,443 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 22:22:11,446 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 22:22:11,446 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 22:22:11,446 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 22:22:11,446 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 22:22:11,447 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 22:22:11,447 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 362ca5c35cce683744d8d619a442f154ce469608d45ae43ff282ddf886694959 [2024-11-10 22:22:11,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 22:22:11,724 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 22:22:11,727 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 22:22:11,728 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 22:22:11,729 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 22:22:11,730 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c [2024-11-10 22:22:13,295 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 22:22:13,537 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 22:22:13,538 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c [2024-11-10 22:22:13,550 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/638515295/8a9f54a6c8ff4b4f973326ebc351cd41/FLAG193ad7cc3 [2024-11-10 22:22:13,563 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/638515295/8a9f54a6c8ff4b4f973326ebc351cd41 [2024-11-10 22:22:13,566 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 22:22:13,567 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 22:22:13,569 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 22:22:13,569 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 22:22:13,576 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 22:22:13,577 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:22:13" (1/1) ... [2024-11-10 22:22:13,578 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@386eb6fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:13, skipping insertion in model container [2024-11-10 22:22:13,578 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:22:13" (1/1) ... [2024-11-10 22:22:13,603 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 22:22:13,876 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:22:13,885 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 22:22:13,917 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:22:13,940 INFO L204 MainTranslator]: Completed translation [2024-11-10 22:22:13,940 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:13 WrapperNode [2024-11-10 22:22:13,941 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 22:22:13,943 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 22:22:13,944 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 22:22:13,944 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 22:22:13,950 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:13" (1/1) ... [2024-11-10 22:22:13,959 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:13" (1/1) ... [2024-11-10 22:22:13,989 INFO L138 Inliner]: procedures = 25, calls = 30, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 352 [2024-11-10 22:22:13,990 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 22:22:13,990 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 22:22:13,990 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 22:22:13,991 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 22:22:14,011 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:13" (1/1) ... [2024-11-10 22:22:14,011 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:13" (1/1) ... [2024-11-10 22:22:14,016 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:13" (1/1) ... [2024-11-10 22:22:14,038 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-10 22:22:14,039 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:13" (1/1) ... [2024-11-10 22:22:14,039 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:13" (1/1) ... [2024-11-10 22:22:14,054 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:13" (1/1) ... [2024-11-10 22:22:14,056 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:13" (1/1) ... [2024-11-10 22:22:14,058 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:13" (1/1) ... [2024-11-10 22:22:14,059 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:13" (1/1) ... [2024-11-10 22:22:14,063 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 22:22:14,064 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 22:22:14,065 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 22:22:14,065 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 22:22:14,066 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:13" (1/1) ... [2024-11-10 22:22:14,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:22:14,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:22:14,107 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-10 22:22:14,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-10 22:22:14,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 22:22:14,154 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 22:22:14,155 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 22:22:14,155 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 22:22:14,155 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 22:22:14,155 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-10 22:22:14,155 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-10 22:22:14,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 22:22:14,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 22:22:14,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 22:22:14,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 22:22:14,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 22:22:14,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 22:22:14,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 22:22:14,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 22:22:14,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 22:22:14,159 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 22:22:14,294 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 22:22:14,297 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 22:22:14,820 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 22:22:14,821 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 22:22:15,215 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 22:22:15,216 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 22:22:15,216 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:22:15 BoogieIcfgContainer [2024-11-10 22:22:15,216 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 22:22:15,218 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 22:22:15,218 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 22:22:15,222 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 22:22:15,222 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:22:13" (1/3) ... [2024-11-10 22:22:15,223 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d9c836d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:22:15, skipping insertion in model container [2024-11-10 22:22:15,223 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:13" (2/3) ... [2024-11-10 22:22:15,224 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d9c836d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:22:15, skipping insertion in model container [2024-11-10 22:22:15,225 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:22:15" (3/3) ... [2024-11-10 22:22:15,227 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-trans.wvr.c [2024-11-10 22:22:15,245 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 22:22:15,246 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2024-11-10 22:22:15,246 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 22:22:15,330 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-10 22:22:15,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 116 transitions, 253 flow [2024-11-10 22:22:15,430 INFO L124 PetriNetUnfolderBase]: 17/113 cut-off events. [2024-11-10 22:22:15,430 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 22:22:15,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 113 events. 17/113 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 455 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 102. Up to 2 conditions per place. [2024-11-10 22:22:15,436 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 116 transitions, 253 flow [2024-11-10 22:22:15,441 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 111 transitions, 237 flow [2024-11-10 22:22:15,455 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:22:15,462 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;@550d6f28, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:22:15,463 INFO L334 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2024-11-10 22:22:15,467 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:22:15,468 INFO L124 PetriNetUnfolderBase]: 2/8 cut-off events. [2024-11-10 22:22:15,468 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:22:15,468 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:22:15,469 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 22:22:15,469 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-10 22:22:15,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:22:15,476 INFO L85 PathProgramCache]: Analyzing trace with hash 29426177, now seen corresponding path program 1 times [2024-11-10 22:22:15,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:22:15,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999686593] [2024-11-10 22:22:15,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:15,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:22:15,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:15,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:22:15,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:22:15,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999686593] [2024-11-10 22:22:15,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999686593] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:22:15,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:22:15,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:22:15,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012925128] [2024-11-10 22:22:15,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:22:15,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:22:15,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:22:15,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:22:15,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:22:15,891 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 116 [2024-11-10 22:22:15,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 111 transitions, 237 flow. Second operand has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:22:15,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:22:15,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 116 [2024-11-10 22:22:15,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:22:18,302 INFO L124 PetriNetUnfolderBase]: 12358/23541 cut-off events. [2024-11-10 22:22:18,303 INFO L125 PetriNetUnfolderBase]: For 537/537 co-relation queries the response was YES. [2024-11-10 22:22:18,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40285 conditions, 23541 events. 12358/23541 cut-off events. For 537/537 co-relation queries the response was YES. Maximal size of possible extension queue 1117. Compared 213435 event pairs, 8540 based on Foata normal form. 3/18443 useless extension candidates. Maximal degree in co-relation 38950. Up to 16294 conditions per place. [2024-11-10 22:22:18,493 INFO L140 encePairwiseOnDemand]: 106/116 looper letters, 55 selfloop transitions, 4 changer transitions 0/110 dead transitions. [2024-11-10 22:22:18,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 110 transitions, 353 flow [2024-11-10 22:22:18,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:22:18,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:22:18,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 282 transitions. [2024-11-10 22:22:18,508 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6077586206896551 [2024-11-10 22:22:18,511 INFO L175 Difference]: Start difference. First operand has 104 places, 111 transitions, 237 flow. Second operand 4 states and 282 transitions. [2024-11-10 22:22:18,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 110 transitions, 353 flow [2024-11-10 22:22:18,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 110 transitions, 344 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-10 22:22:18,525 INFO L231 Difference]: Finished difference. Result has 104 places, 110 transitions, 249 flow [2024-11-10 22:22:18,527 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=249, PETRI_PLACES=104, PETRI_TRANSITIONS=110} [2024-11-10 22:22:18,531 INFO L277 CegarLoopForPetriNet]: 104 programPoint places, 0 predicate places. [2024-11-10 22:22:18,532 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 110 transitions, 249 flow [2024-11-10 22:22:18,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:22:18,533 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:22:18,533 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-10 22:22:18,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 22:22:18,533 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-10 22:22:18,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:22:18,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1461221367, now seen corresponding path program 1 times [2024-11-10 22:22:18,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:22:18,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071406385] [2024-11-10 22:22:18,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:18,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:22:18,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:18,695 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:22:18,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:22:18,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071406385] [2024-11-10 22:22:18,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071406385] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:22:18,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25290184] [2024-11-10 22:22:18,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:18,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:22:18,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:22:18,699 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:22:18,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 22:22:18,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:18,787 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:22:18,791 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:22:18,851 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:22:18,852 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:22:18,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25290184] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:22:18,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:22:18,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-10 22:22:18,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809146182] [2024-11-10 22:22:18,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:22:18,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:22:18,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:22:18,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:22:18,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:22:18,875 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 116 [2024-11-10 22:22:18,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 110 transitions, 249 flow. Second operand has 6 states, 6 states have (on average 54.833333333333336) internal successors, (329), 6 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:22:18,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:22:18,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 116 [2024-11-10 22:22:18,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:22:20,909 INFO L124 PetriNetUnfolderBase]: 12358/23540 cut-off events. [2024-11-10 22:22:20,909 INFO L125 PetriNetUnfolderBase]: For 133/133 co-relation queries the response was YES. [2024-11-10 22:22:20,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40136 conditions, 23540 events. 12358/23540 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 1117. Compared 213521 event pairs, 8540 based on Foata normal form. 1/18440 useless extension candidates. Maximal degree in co-relation 40107. Up to 16289 conditions per place. [2024-11-10 22:22:21,080 INFO L140 encePairwiseOnDemand]: 111/116 looper letters, 51 selfloop transitions, 7 changer transitions 0/109 dead transitions. [2024-11-10 22:22:21,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 109 transitions, 361 flow [2024-11-10 22:22:21,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:22:21,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:22:21,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 383 transitions. [2024-11-10 22:22:21,084 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5502873563218391 [2024-11-10 22:22:21,084 INFO L175 Difference]: Start difference. First operand has 104 places, 110 transitions, 249 flow. Second operand 6 states and 383 transitions. [2024-11-10 22:22:21,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 109 transitions, 361 flow [2024-11-10 22:22:21,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 109 transitions, 358 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:22:21,089 INFO L231 Difference]: Finished difference. Result has 107 places, 109 transitions, 256 flow [2024-11-10 22:22:21,090 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=256, PETRI_PLACES=107, PETRI_TRANSITIONS=109} [2024-11-10 22:22:21,092 INFO L277 CegarLoopForPetriNet]: 104 programPoint places, 3 predicate places. [2024-11-10 22:22:21,093 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 109 transitions, 256 flow [2024-11-10 22:22:21,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.833333333333336) internal successors, (329), 6 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:22:21,094 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:22:21,094 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-10 22:22:21,112 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 22:22:21,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:22:21,299 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-10 22:22:21,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:22:21,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1946777007, now seen corresponding path program 1 times [2024-11-10 22:22:21,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:22:21,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929593022] [2024-11-10 22:22:21,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:21,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:22:21,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:21,426 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:22:21,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:22:21,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929593022] [2024-11-10 22:22:21,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929593022] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:22:21,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493536137] [2024-11-10 22:22:21,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:21,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:22:21,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:22:21,430 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:22:21,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 22:22:21,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:21,506 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:22:21,507 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:22:21,536 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:22:21,537 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:22:21,596 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:22:21,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493536137] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:22:21,597 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:22:21,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-10 22:22:21,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565156279] [2024-11-10 22:22:21,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:22:21,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 22:22:21,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:22:21,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 22:22:21,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-10 22:22:21,623 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 116 [2024-11-10 22:22:21,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 109 transitions, 256 flow. Second operand has 12 states, 12 states have (on average 55.083333333333336) internal successors, (661), 12 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:22:21,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:22:21,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 116 [2024-11-10 22:22:21,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:22:23,630 INFO L124 PetriNetUnfolderBase]: 12361/23558 cut-off events. [2024-11-10 22:22:23,630 INFO L125 PetriNetUnfolderBase]: For 177/177 co-relation queries the response was YES. [2024-11-10 22:22:23,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40186 conditions, 23558 events. 12361/23558 cut-off events. For 177/177 co-relation queries the response was YES. Maximal size of possible extension queue 1117. Compared 213559 event pairs, 8540 based on Foata normal form. 3/18461 useless extension candidates. Maximal degree in co-relation 40108. Up to 16296 conditions per place. [2024-11-10 22:22:23,768 INFO L140 encePairwiseOnDemand]: 111/116 looper letters, 54 selfloop transitions, 13 changer transitions 0/118 dead transitions. [2024-11-10 22:22:23,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 118 transitions, 444 flow [2024-11-10 22:22:23,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 22:22:23,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 22:22:23,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 610 transitions. [2024-11-10 22:22:23,771 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5258620689655172 [2024-11-10 22:22:23,771 INFO L175 Difference]: Start difference. First operand has 107 places, 109 transitions, 256 flow. Second operand 10 states and 610 transitions. [2024-11-10 22:22:23,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 118 transitions, 444 flow [2024-11-10 22:22:23,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 118 transitions, 414 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-10 22:22:23,777 INFO L231 Difference]: Finished difference. Result has 115 places, 118 transitions, 324 flow [2024-11-10 22:22:23,779 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=324, PETRI_PLACES=115, PETRI_TRANSITIONS=118} [2024-11-10 22:22:23,780 INFO L277 CegarLoopForPetriNet]: 104 programPoint places, 11 predicate places. [2024-11-10 22:22:23,780 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 118 transitions, 324 flow [2024-11-10 22:22:23,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 55.083333333333336) internal successors, (661), 12 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:22:23,781 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:22:23,781 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:22:23,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-10 22:22:23,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-10 22:22:23,983 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-10 22:22:23,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:22:23,984 INFO L85 PathProgramCache]: Analyzing trace with hash 640181939, now seen corresponding path program 1 times [2024-11-10 22:22:23,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:22:23,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478245490] [2024-11-10 22:22:23,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:23,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:22:23,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:24,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:22:24,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:22:24,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478245490] [2024-11-10 22:22:24,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478245490] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:22:24,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:22:24,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:22:24,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232919533] [2024-11-10 22:22:24,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:22:24,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:22:24,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:22:24,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:22:24,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:22:24,067 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 116 [2024-11-10 22:22:24,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 118 transitions, 324 flow. Second operand has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:22:24,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:22:24,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 116 [2024-11-10 22:22:24,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:22:27,180 INFO L124 PetriNetUnfolderBase]: 26183/47398 cut-off events. [2024-11-10 22:22:27,181 INFO L125 PetriNetUnfolderBase]: For 114/114 co-relation queries the response was YES. [2024-11-10 22:22:27,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82614 conditions, 47398 events. 26183/47398 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 2054. Compared 452278 event pairs, 10380 based on Foata normal form. 366/38122 useless extension candidates. Maximal degree in co-relation 82576. Up to 18667 conditions per place. [2024-11-10 22:22:27,513 INFO L140 encePairwiseOnDemand]: 111/116 looper letters, 146 selfloop transitions, 3 changer transitions 0/199 dead transitions. [2024-11-10 22:22:27,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 199 transitions, 792 flow [2024-11-10 22:22:27,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:22:27,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:22:27,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 355 transitions. [2024-11-10 22:22:27,516 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7650862068965517 [2024-11-10 22:22:27,516 INFO L175 Difference]: Start difference. First operand has 115 places, 118 transitions, 324 flow. Second operand 4 states and 355 transitions. [2024-11-10 22:22:27,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 199 transitions, 792 flow [2024-11-10 22:22:27,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 199 transitions, 781 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-10 22:22:27,525 INFO L231 Difference]: Finished difference. Result has 118 places, 120 transitions, 335 flow [2024-11-10 22:22:27,526 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=335, PETRI_PLACES=118, PETRI_TRANSITIONS=120} [2024-11-10 22:22:27,526 INFO L277 CegarLoopForPetriNet]: 104 programPoint places, 14 predicate places. [2024-11-10 22:22:27,528 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 120 transitions, 335 flow [2024-11-10 22:22:27,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:22:27,529 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:22:27,529 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:22:27,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 22:22:27,529 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-10 22:22:27,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:22:27,530 INFO L85 PathProgramCache]: Analyzing trace with hash -767364107, now seen corresponding path program 1 times [2024-11-10 22:22:27,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:22:27,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187566361] [2024-11-10 22:22:27,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:27,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:22:27,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:27,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:22:27,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:22:27,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187566361] [2024-11-10 22:22:27,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187566361] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:22:27,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:22:27,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:22:27,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610921257] [2024-11-10 22:22:27,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:22:27,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:22:27,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:22:27,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:22:27,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:22:27,612 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 116 [2024-11-10 22:22:27,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 120 transitions, 335 flow. Second operand has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:22:27,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:22:27,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 116 [2024-11-10 22:22:27,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:22:33,855 INFO L124 PetriNetUnfolderBase]: 52284/93016 cut-off events. [2024-11-10 22:22:33,855 INFO L125 PetriNetUnfolderBase]: For 6404/7596 co-relation queries the response was YES. [2024-11-10 22:22:34,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167691 conditions, 93016 events. 52284/93016 cut-off events. For 6404/7596 co-relation queries the response was YES. Maximal size of possible extension queue 3796. Compared 942234 event pairs, 21876 based on Foata normal form. 726/77377 useless extension candidates. Maximal degree in co-relation 167651. Up to 39191 conditions per place. [2024-11-10 22:22:34,482 INFO L140 encePairwiseOnDemand]: 111/116 looper letters, 149 selfloop transitions, 3 changer transitions 0/202 dead transitions. [2024-11-10 22:22:34,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 202 transitions, 838 flow [2024-11-10 22:22:34,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:22:34,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:22:34,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 352 transitions. [2024-11-10 22:22:34,484 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7586206896551724 [2024-11-10 22:22:34,484 INFO L175 Difference]: Start difference. First operand has 118 places, 120 transitions, 335 flow. Second operand 4 states and 352 transitions. [2024-11-10 22:22:34,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 202 transitions, 838 flow [2024-11-10 22:22:34,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 202 transitions, 832 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:22:34,492 INFO L231 Difference]: Finished difference. Result has 122 places, 122 transitions, 355 flow [2024-11-10 22:22:34,492 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=355, PETRI_PLACES=122, PETRI_TRANSITIONS=122} [2024-11-10 22:22:34,493 INFO L277 CegarLoopForPetriNet]: 104 programPoint places, 18 predicate places. [2024-11-10 22:22:34,493 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 122 transitions, 355 flow [2024-11-10 22:22:34,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:22:34,494 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:22:34,494 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:22:34,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 22:22:34,494 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-10 22:22:34,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:22:34,495 INFO L85 PathProgramCache]: Analyzing trace with hash 2005186793, now seen corresponding path program 1 times [2024-11-10 22:22:34,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:22:34,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552575271] [2024-11-10 22:22:34,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:34,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:22:34,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:34,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:22:34,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:22:34,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552575271] [2024-11-10 22:22:34,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552575271] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:22:34,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:22:34,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 22:22:34,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358876147] [2024-11-10 22:22:34,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:22:34,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:22:34,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:22:34,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:22:34,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:22:34,578 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 116 [2024-11-10 22:22:34,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 122 transitions, 355 flow. Second operand has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:22:34,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:22:34,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 116 [2024-11-10 22:22:34,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:22:39,378 INFO L124 PetriNetUnfolderBase]: 43321/71865 cut-off events. [2024-11-10 22:22:39,379 INFO L125 PetriNetUnfolderBase]: For 8373/9779 co-relation queries the response was YES. [2024-11-10 22:22:39,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139558 conditions, 71865 events. 43321/71865 cut-off events. For 8373/9779 co-relation queries the response was YES. Maximal size of possible extension queue 2506. Compared 643591 event pairs, 17244 based on Foata normal form. 0/62017 useless extension candidates. Maximal degree in co-relation 139516. Up to 31143 conditions per place. [2024-11-10 22:22:39,896 INFO L140 encePairwiseOnDemand]: 111/116 looper letters, 181 selfloop transitions, 4 changer transitions 0/237 dead transitions. [2024-11-10 22:22:39,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 237 transitions, 1010 flow [2024-11-10 22:22:39,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:22:39,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:22:39,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 446 transitions. [2024-11-10 22:22:39,898 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7689655172413793 [2024-11-10 22:22:39,898 INFO L175 Difference]: Start difference. First operand has 122 places, 122 transitions, 355 flow. Second operand 5 states and 446 transitions. [2024-11-10 22:22:39,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 237 transitions, 1010 flow [2024-11-10 22:22:40,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 237 transitions, 1002 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:22:40,244 INFO L231 Difference]: Finished difference. Result has 128 places, 124 transitions, 378 flow [2024-11-10 22:22:40,244 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=378, PETRI_PLACES=128, PETRI_TRANSITIONS=124} [2024-11-10 22:22:40,245 INFO L277 CegarLoopForPetriNet]: 104 programPoint places, 24 predicate places. [2024-11-10 22:22:40,245 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 124 transitions, 378 flow [2024-11-10 22:22:40,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:22:40,245 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:22:40,245 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:22:40,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 22:22:40,246 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-10 22:22:40,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:22:40,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1670147999, now seen corresponding path program 1 times [2024-11-10 22:22:40,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:22:40,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727065499] [2024-11-10 22:22:40,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:40,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:22:40,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:40,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:22:40,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:22:40,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727065499] [2024-11-10 22:22:40,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727065499] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:22:40,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:22:40,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:22:40,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013353392] [2024-11-10 22:22:40,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:22:40,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:22:40,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:22:40,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:22:40,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:22:40,311 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 116 [2024-11-10 22:22:40,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 124 transitions, 378 flow. Second operand has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:22:40,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:22:40,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 116 [2024-11-10 22:22:40,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:22:50,645 INFO L124 PetriNetUnfolderBase]: 83876/148930 cut-off events. [2024-11-10 22:22:50,645 INFO L125 PetriNetUnfolderBase]: For 37527/41446 co-relation queries the response was YES. [2024-11-10 22:22:51,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288685 conditions, 148930 events. 83876/148930 cut-off events. For 37527/41446 co-relation queries the response was YES. Maximal size of possible extension queue 5153. Compared 1563317 event pairs, 37665 based on Foata normal form. 1181/127782 useless extension candidates. Maximal degree in co-relation 288641. Up to 63586 conditions per place. [2024-11-10 22:22:52,180 INFO L140 encePairwiseOnDemand]: 111/116 looper letters, 158 selfloop transitions, 3 changer transitions 0/211 dead transitions. [2024-11-10 22:22:52,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 211 transitions, 968 flow [2024-11-10 22:22:52,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:22:52,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:22:52,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 349 transitions. [2024-11-10 22:22:52,182 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7521551724137931 [2024-11-10 22:22:52,182 INFO L175 Difference]: Start difference. First operand has 128 places, 124 transitions, 378 flow. Second operand 4 states and 349 transitions. [2024-11-10 22:22:52,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 211 transitions, 968 flow [2024-11-10 22:22:52,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 211 transitions, 968 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 22:22:52,215 INFO L231 Difference]: Finished difference. Result has 133 places, 126 transitions, 400 flow [2024-11-10 22:22:52,215 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=400, PETRI_PLACES=133, PETRI_TRANSITIONS=126} [2024-11-10 22:22:52,216 INFO L277 CegarLoopForPetriNet]: 104 programPoint places, 29 predicate places. [2024-11-10 22:22:52,216 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 126 transitions, 400 flow [2024-11-10 22:22:52,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:22:52,216 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:22:52,216 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:22:52,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 22:22:52,216 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-10 22:22:52,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:22:52,217 INFO L85 PathProgramCache]: Analyzing trace with hash 2064725450, now seen corresponding path program 1 times [2024-11-10 22:22:52,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:22:52,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412599924] [2024-11-10 22:22:52,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:52,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:22:52,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:52,280 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 22:22:52,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:22:52,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412599924] [2024-11-10 22:22:52,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412599924] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:22:52,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:22:52,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:22:52,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72004728] [2024-11-10 22:22:52,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:22:52,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:22:52,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:22:52,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:22:52,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:22:52,285 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 116 [2024-11-10 22:22:52,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 126 transitions, 400 flow. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:22:52,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:22:52,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 116 [2024-11-10 22:22:52,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand