./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e3298e0ac573b72ea1dd21021e341a1c4e9f42cf513c1ea24a79ab2c37c412bc --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 22:22:08,953 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 22:22:09,020 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-10 22:22:09,024 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 22:22:09,025 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 22:22:09,055 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 22:22:09,056 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 22:22:09,057 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 22:22:09,057 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 22:22:09,057 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 22:22:09,058 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 22:22:09,058 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 22:22:09,059 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 22:22:09,059 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 22:22:09,061 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 22:22:09,061 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 22:22:09,061 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 22:22:09,062 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 22:22:09,062 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 22:22:09,062 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 22:22:09,065 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 22:22:09,066 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 22:22:09,066 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 22:22:09,066 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 22:22:09,066 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 22:22:09,066 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-10 22:22:09,066 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 22:22:09,067 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 22:22:09,067 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 22:22:09,067 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 22:22:09,067 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 22:22:09,067 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 22:22:09,067 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 22:22:09,067 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 22:22:09,068 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:22:09,068 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 22:22:09,068 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 22:22:09,068 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 22:22:09,068 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 22:22:09,068 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 22:22:09,068 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 22:22:09,069 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 22:22:09,069 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 22:22:09,069 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 22:22:09,069 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e3298e0ac573b72ea1dd21021e341a1c4e9f42cf513c1ea24a79ab2c37c412bc [2024-11-10 22:22:09,262 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 22:22:09,283 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 22:22:09,286 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 22:22:09,288 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 22:22:09,288 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 22:22:09,289 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2024-11-10 22:22:10,673 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 22:22:10,866 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 22:22:10,869 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2024-11-10 22:22:10,878 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a17e17775/55993c6f36cf462e84cca52f8f605a63/FLAGa8d111a0c [2024-11-10 22:22:10,890 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a17e17775/55993c6f36cf462e84cca52f8f605a63 [2024-11-10 22:22:10,892 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 22:22:10,893 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 22:22:10,895 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 22:22:10,896 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 22:22:10,900 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 22:22:10,900 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:22:10" (1/1) ... [2024-11-10 22:22:10,901 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b845d26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:10, skipping insertion in model container [2024-11-10 22:22:10,901 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:22:10" (1/1) ... [2024-11-10 22:22:10,924 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 22:22:11,121 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:22:11,130 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 22:22:11,162 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:22:11,181 INFO L204 MainTranslator]: Completed translation [2024-11-10 22:22:11,182 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:11 WrapperNode [2024-11-10 22:22:11,182 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 22:22:11,183 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 22:22:11,183 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 22:22:11,184 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 22:22:11,189 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:11" (1/1) ... [2024-11-10 22:22:11,200 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:11" (1/1) ... [2024-11-10 22:22:11,243 INFO L138 Inliner]: procedures = 24, calls = 25, calls flagged for inlining = 15, calls inlined = 17, statements flattened = 254 [2024-11-10 22:22:11,243 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 22:22:11,244 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 22:22:11,244 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 22:22:11,244 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 22:22:11,253 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:11" (1/1) ... [2024-11-10 22:22:11,253 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:11" (1/1) ... [2024-11-10 22:22:11,258 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:11" (1/1) ... [2024-11-10 22:22:11,275 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-10 22:22:11,275 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:11" (1/1) ... [2024-11-10 22:22:11,276 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:11" (1/1) ... [2024-11-10 22:22:11,281 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:11" (1/1) ... [2024-11-10 22:22:11,281 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:11" (1/1) ... [2024-11-10 22:22:11,282 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:11" (1/1) ... [2024-11-10 22:22:11,283 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:11" (1/1) ... [2024-11-10 22:22:11,285 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 22:22:11,289 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 22:22:11,289 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 22:22:11,289 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 22:22:11,290 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:11" (1/1) ... [2024-11-10 22:22:11,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:22:11,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:22:11,337 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 22:22:11,341 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 22:22:11,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 22:22:11,378 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 22:22:11,378 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 22:22:11,378 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 22:22:11,378 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 22:22:11,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 22:22:11,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 22:22:11,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 22:22:11,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 22:22:11,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 22:22:11,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 22:22:11,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 22:22:11,379 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 22:22:11,379 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 22:22:11,384 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 22:22:11,491 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 22:22:11,493 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 22:22:11,825 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 22:22:11,826 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 22:22:12,126 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 22:22:12,127 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 22:22:12,128 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:22:12 BoogieIcfgContainer [2024-11-10 22:22:12,128 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 22:22:12,129 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 22:22:12,130 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 22:22:12,133 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 22:22:12,133 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:22:10" (1/3) ... [2024-11-10 22:22:12,134 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@596f89ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:22:12, skipping insertion in model container [2024-11-10 22:22:12,134 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:22:11" (2/3) ... [2024-11-10 22:22:12,134 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@596f89ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:22:12, skipping insertion in model container [2024-11-10 22:22:12,135 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:22:12" (3/3) ... [2024-11-10 22:22:12,136 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-symm.wvr.c [2024-11-10 22:22:12,150 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 22:22:12,150 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2024-11-10 22:22:12,150 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 22:22:12,202 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-10 22:22:12,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 84 transitions, 182 flow [2024-11-10 22:22:12,273 INFO L124 PetriNetUnfolderBase]: 12/82 cut-off events. [2024-11-10 22:22:12,274 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 22:22:12,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 82 events. 12/82 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 262 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2024-11-10 22:22:12,278 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 84 transitions, 182 flow [2024-11-10 22:22:12,282 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 81 transitions, 174 flow [2024-11-10 22:22:12,290 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:22:12,296 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;@d2265b7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:22:12,296 INFO L334 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2024-11-10 22:22:12,299 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:22:12,300 INFO L124 PetriNetUnfolderBase]: 2/8 cut-off events. [2024-11-10 22:22:12,300 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:22:12,300 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:22:12,301 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 22:22:12,301 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:22:12,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:22:12,305 INFO L85 PathProgramCache]: Analyzing trace with hash 21515999, now seen corresponding path program 1 times [2024-11-10 22:22:12,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:22:12,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784707611] [2024-11-10 22:22:12,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:12,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:22:12,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:12,559 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 22:22:12,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:22:12,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784707611] [2024-11-10 22:22:12,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784707611] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:22:12,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:22:12,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:22:12,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686636566] [2024-11-10 22:22:12,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:22:12,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:22:12,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:22:12,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:22:12,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:22:12,608 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 84 [2024-11-10 22:22:12,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 81 transitions, 174 flow. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 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) [2024-11-10 22:22:12,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:22:12,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 84 [2024-11-10 22:22:12,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:22:12,884 INFO L124 PetriNetUnfolderBase]: 596/1431 cut-off events. [2024-11-10 22:22:12,884 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-11-10 22:22:12,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2384 conditions, 1431 events. 596/1431 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 9445 event pairs, 390 based on Foata normal form. 5/1112 useless extension candidates. Maximal degree in co-relation 2283. Up to 912 conditions per place. [2024-11-10 22:22:12,899 INFO L140 encePairwiseOnDemand]: 73/84 looper letters, 38 selfloop transitions, 4 changer transitions 2/79 dead transitions. [2024-11-10 22:22:12,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 79 transitions, 256 flow [2024-11-10 22:22:12,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:22:12,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:22:12,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 203 transitions. [2024-11-10 22:22:12,910 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-11-10 22:22:12,911 INFO L175 Difference]: Start difference. First operand has 76 places, 81 transitions, 174 flow. Second operand 4 states and 203 transitions. [2024-11-10 22:22:12,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 79 transitions, 256 flow [2024-11-10 22:22:12,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 79 transitions, 248 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 22:22:12,919 INFO L231 Difference]: Finished difference. Result has 75 places, 77 transitions, 180 flow [2024-11-10 22:22:12,922 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=180, PETRI_PLACES=75, PETRI_TRANSITIONS=77} [2024-11-10 22:22:12,924 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, -1 predicate places. [2024-11-10 22:22:12,926 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 77 transitions, 180 flow [2024-11-10 22:22:12,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 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) [2024-11-10 22:22:12,926 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:22:12,927 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-10 22:22:12,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 22:22:12,927 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:22:12,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:22:12,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1977333902, now seen corresponding path program 1 times [2024-11-10 22:22:12,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:22:12,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220627430] [2024-11-10 22:22:12,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:12,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:22:12,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:13,109 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 22:22:13,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:22:13,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220627430] [2024-11-10 22:22:13,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220627430] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:22:13,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900806319] [2024-11-10 22:22:13,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:13,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:22:13,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:22:13,112 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 22:22:13,113 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 22:22:13,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:13,264 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:22:13,272 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:22:13,312 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 22:22:13,312 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:22:13,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900806319] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:22:13,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:22:13,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-10 22:22:13,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144433269] [2024-11-10 22:22:13,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:22:13,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:22:13,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:22:13,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:22:13,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:22:13,324 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 84 [2024-11-10 22:22:13,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 77 transitions, 180 flow. Second operand has 6 states, 6 states have (on average 38.833333333333336) internal successors, (233), 6 states have internal predecessors, (233), 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 22:22:13,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:22:13,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 84 [2024-11-10 22:22:13,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:22:13,495 INFO L124 PetriNetUnfolderBase]: 596/1428 cut-off events. [2024-11-10 22:22:13,495 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-11-10 22:22:13,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2367 conditions, 1428 events. 596/1428 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 9413 event pairs, 390 based on Foata normal form. 1/1105 useless extension candidates. Maximal degree in co-relation 2338. Up to 906 conditions per place. [2024-11-10 22:22:13,503 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 34 selfloop transitions, 7 changer transitions 0/76 dead transitions. [2024-11-10 22:22:13,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 76 transitions, 258 flow [2024-11-10 22:22:13,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:22:13,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:22:13,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 270 transitions. [2024-11-10 22:22:13,507 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-11-10 22:22:13,507 INFO L175 Difference]: Start difference. First operand has 75 places, 77 transitions, 180 flow. Second operand 6 states and 270 transitions. [2024-11-10 22:22:13,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 76 transitions, 258 flow [2024-11-10 22:22:13,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 76 transitions, 255 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:22:13,509 INFO L231 Difference]: Finished difference. Result has 76 places, 76 transitions, 187 flow [2024-11-10 22:22:13,509 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=187, PETRI_PLACES=76, PETRI_TRANSITIONS=76} [2024-11-10 22:22:13,512 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 0 predicate places. [2024-11-10 22:22:13,513 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 76 transitions, 187 flow [2024-11-10 22:22:13,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.833333333333336) internal successors, (233), 6 states have internal predecessors, (233), 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 22:22:13,514 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:22:13,515 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-10 22:22:13,529 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 22:22:13,718 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 22:22:13,719 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:22:13,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:22:13,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1167809438, now seen corresponding path program 1 times [2024-11-10 22:22:13,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:22:13,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506532414] [2024-11-10 22:22:13,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:13,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:22:13,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:13,811 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 22:22:13,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:22:13,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506532414] [2024-11-10 22:22:13,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506532414] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:22:13,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523589494] [2024-11-10 22:22:13,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:13,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:22:13,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:22:13,816 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 22:22:13,820 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 22:22:13,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:13,870 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:22:13,871 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:22:13,891 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 22:22:13,892 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:22:13,926 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 22:22:13,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523589494] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:22:13,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:22:13,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-10 22:22:13,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066884554] [2024-11-10 22:22:13,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:22:13,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 22:22:13,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:22:13,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 22:22:13,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-10 22:22:13,948 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 84 [2024-11-10 22:22:13,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 76 transitions, 187 flow. Second operand has 12 states, 12 states have (on average 39.083333333333336) internal successors, (469), 12 states have internal predecessors, (469), 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 22:22:13,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:22:13,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 84 [2024-11-10 22:22:13,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:22:14,175 INFO L124 PetriNetUnfolderBase]: 599/1446 cut-off events. [2024-11-10 22:22:14,175 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-11-10 22:22:14,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2417 conditions, 1446 events. 599/1446 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 9596 event pairs, 390 based on Foata normal form. 3/1126 useless extension candidates. Maximal degree in co-relation 2339. Up to 913 conditions per place. [2024-11-10 22:22:14,181 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 37 selfloop transitions, 13 changer transitions 0/85 dead transitions. [2024-11-10 22:22:14,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 85 transitions, 341 flow [2024-11-10 22:22:14,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 22:22:14,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 22:22:14,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 433 transitions. [2024-11-10 22:22:14,183 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5154761904761904 [2024-11-10 22:22:14,183 INFO L175 Difference]: Start difference. First operand has 76 places, 76 transitions, 187 flow. Second operand 10 states and 433 transitions. [2024-11-10 22:22:14,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 85 transitions, 341 flow [2024-11-10 22:22:14,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 85 transitions, 311 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-10 22:22:14,186 INFO L231 Difference]: Finished difference. Result has 84 places, 85 transitions, 255 flow [2024-11-10 22:22:14,186 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=255, PETRI_PLACES=84, PETRI_TRANSITIONS=85} [2024-11-10 22:22:14,186 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 8 predicate places. [2024-11-10 22:22:14,187 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 85 transitions, 255 flow [2024-11-10 22:22:14,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 39.083333333333336) internal successors, (469), 12 states have internal predecessors, (469), 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 22:22:14,187 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:22:14,187 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:22:14,201 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 22:22:14,387 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 22:22:14,388 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:22:14,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:22:14,389 INFO L85 PathProgramCache]: Analyzing trace with hash 85045758, now seen corresponding path program 1 times [2024-11-10 22:22:14,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:22:14,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159039774] [2024-11-10 22:22:14,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:14,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:22:14,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:14,429 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 22:22:14,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:22:14,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159039774] [2024-11-10 22:22:14,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159039774] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:22:14,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:22:14,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:22:14,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451863096] [2024-11-10 22:22:14,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:22:14,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:22:14,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:22:14,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:22:14,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:22:14,438 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 84 [2024-11-10 22:22:14,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 85 transitions, 255 flow. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 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 22:22:14,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:22:14,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 84 [2024-11-10 22:22:14,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:22:14,668 INFO L124 PetriNetUnfolderBase]: 1243/2854 cut-off events. [2024-11-10 22:22:14,668 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2024-11-10 22:22:14,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4824 conditions, 2854 events. 1243/2854 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 21324 event pairs, 486 based on Foata normal form. 28/2276 useless extension candidates. Maximal degree in co-relation 4786. Up to 1042 conditions per place. [2024-11-10 22:22:14,681 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 96 selfloop transitions, 3 changer transitions 0/133 dead transitions. [2024-11-10 22:22:14,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 133 transitions, 552 flow [2024-11-10 22:22:14,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:22:14,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:22:14,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 241 transitions. [2024-11-10 22:22:14,683 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7172619047619048 [2024-11-10 22:22:14,683 INFO L175 Difference]: Start difference. First operand has 84 places, 85 transitions, 255 flow. Second operand 4 states and 241 transitions. [2024-11-10 22:22:14,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 133 transitions, 552 flow [2024-11-10 22:22:14,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 133 transitions, 541 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-10 22:22:14,686 INFO L231 Difference]: Finished difference. Result has 87 places, 87 transitions, 266 flow [2024-11-10 22:22:14,686 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=266, PETRI_PLACES=87, PETRI_TRANSITIONS=87} [2024-11-10 22:22:14,687 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 11 predicate places. [2024-11-10 22:22:14,687 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 87 transitions, 266 flow [2024-11-10 22:22:14,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 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 22:22:14,687 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:22:14,687 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:22:14,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 22:22:14,688 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:22:14,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:22:14,688 INFO L85 PathProgramCache]: Analyzing trace with hash -190428694, now seen corresponding path program 1 times [2024-11-10 22:22:14,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:22:14,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995529796] [2024-11-10 22:22:14,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:14,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:22:14,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:14,736 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 22:22:14,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:22:14,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995529796] [2024-11-10 22:22:14,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995529796] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:22:14,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:22:14,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:22:14,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328636264] [2024-11-10 22:22:14,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:22:14,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:22:14,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:22:14,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:22:14,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:22:14,745 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 84 [2024-11-10 22:22:14,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 87 transitions, 266 flow. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 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 22:22:14,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:22:14,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 84 [2024-11-10 22:22:14,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:22:15,199 INFO L124 PetriNetUnfolderBase]: 2395/5275 cut-off events. [2024-11-10 22:22:15,200 INFO L125 PetriNetUnfolderBase]: For 524/600 co-relation queries the response was YES. [2024-11-10 22:22:15,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9317 conditions, 5275 events. 2395/5275 cut-off events. For 524/600 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 42813 event pairs, 1004 based on Foata normal form. 52/4370 useless extension candidates. Maximal degree in co-relation 9277. Up to 2071 conditions per place. [2024-11-10 22:22:15,227 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 99 selfloop transitions, 3 changer transitions 0/136 dead transitions. [2024-11-10 22:22:15,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 136 transitions, 598 flow [2024-11-10 22:22:15,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:22:15,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:22:15,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 238 transitions. [2024-11-10 22:22:15,230 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7083333333333334 [2024-11-10 22:22:15,230 INFO L175 Difference]: Start difference. First operand has 87 places, 87 transitions, 266 flow. Second operand 4 states and 238 transitions. [2024-11-10 22:22:15,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 136 transitions, 598 flow [2024-11-10 22:22:15,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 136 transitions, 592 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:22:15,234 INFO L231 Difference]: Finished difference. Result has 91 places, 89 transitions, 286 flow [2024-11-10 22:22:15,235 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=286, PETRI_PLACES=91, PETRI_TRANSITIONS=89} [2024-11-10 22:22:15,235 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 15 predicate places. [2024-11-10 22:22:15,236 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 89 transitions, 286 flow [2024-11-10 22:22:15,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 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 22:22:15,236 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:22:15,236 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:22:15,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 22:22:15,237 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:22:15,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:22:15,237 INFO L85 PathProgramCache]: Analyzing trace with hash -432944993, now seen corresponding path program 1 times [2024-11-10 22:22:15,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:22:15,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200764435] [2024-11-10 22:22:15,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:15,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:22:15,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:15,294 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 22:22:15,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:22:15,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200764435] [2024-11-10 22:22:15,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200764435] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:22:15,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:22:15,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 22:22:15,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464623014] [2024-11-10 22:22:15,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:22:15,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:22:15,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:22:15,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:22:15,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:22:15,297 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 84 [2024-11-10 22:22:15,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 89 transitions, 286 flow. Second operand has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 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 22:22:15,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:22:15,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 84 [2024-11-10 22:22:15,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:22:15,680 INFO L124 PetriNetUnfolderBase]: 1921/4119 cut-off events. [2024-11-10 22:22:15,681 INFO L125 PetriNetUnfolderBase]: For 651/719 co-relation queries the response was YES. [2024-11-10 22:22:15,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7874 conditions, 4119 events. 1921/4119 cut-off events. For 651/719 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 31082 event pairs, 764 based on Foata normal form. 0/3583 useless extension candidates. Maximal degree in co-relation 7832. Up to 1639 conditions per place. [2024-11-10 22:22:15,705 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 108 selfloop transitions, 4 changer transitions 6/154 dead transitions. [2024-11-10 22:22:15,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 154 transitions, 699 flow [2024-11-10 22:22:15,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:22:15,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:22:15,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 299 transitions. [2024-11-10 22:22:15,706 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7119047619047619 [2024-11-10 22:22:15,706 INFO L175 Difference]: Start difference. First operand has 91 places, 89 transitions, 286 flow. Second operand 5 states and 299 transitions. [2024-11-10 22:22:15,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 154 transitions, 699 flow [2024-11-10 22:22:15,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 154 transitions, 691 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:22:15,712 INFO L231 Difference]: Finished difference. Result has 97 places, 91 transitions, 309 flow [2024-11-10 22:22:15,713 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=309, PETRI_PLACES=97, PETRI_TRANSITIONS=91} [2024-11-10 22:22:15,714 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 21 predicate places. [2024-11-10 22:22:15,715 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 91 transitions, 309 flow [2024-11-10 22:22:15,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 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 22:22:15,715 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:22:15,715 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:22:15,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 22:22:15,715 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:22:15,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:22:15,716 INFO L85 PathProgramCache]: Analyzing trace with hash -502916139, now seen corresponding path program 1 times [2024-11-10 22:22:15,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:22:15,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773300465] [2024-11-10 22:22:15,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:15,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:22:15,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:15,771 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 22:22:15,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:22:15,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773300465] [2024-11-10 22:22:15,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773300465] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:22:15,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:22:15,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:22:15,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144093764] [2024-11-10 22:22:15,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:22:15,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:22:15,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:22:15,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:22:15,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:22:15,773 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 84 [2024-11-10 22:22:15,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 91 transitions, 309 flow. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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 22:22:15,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:22:15,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 84 [2024-11-10 22:22:15,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:22:16,057 INFO L124 PetriNetUnfolderBase]: 1832/4364 cut-off events. [2024-11-10 22:22:16,057 INFO L125 PetriNetUnfolderBase]: For 1282/1316 co-relation queries the response was YES. [2024-11-10 22:22:16,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8460 conditions, 4364 events. 1832/4364 cut-off events. For 1282/1316 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 35430 event pairs, 1375 based on Foata normal form. 1/3731 useless extension candidates. Maximal degree in co-relation 8423. Up to 2869 conditions per place. [2024-11-10 22:22:16,072 INFO L140 encePairwiseOnDemand]: 81/84 looper letters, 53 selfloop transitions, 2 changer transitions 0/90 dead transitions. [2024-11-10 22:22:16,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 90 transitions, 415 flow [2024-11-10 22:22:16,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:22:16,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:22:16,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 158 transitions. [2024-11-10 22:22:16,074 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.626984126984127 [2024-11-10 22:22:16,074 INFO L175 Difference]: Start difference. First operand has 97 places, 91 transitions, 309 flow. Second operand 3 states and 158 transitions. [2024-11-10 22:22:16,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 90 transitions, 415 flow [2024-11-10 22:22:16,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 90 transitions, 415 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 22:22:16,077 INFO L231 Difference]: Finished difference. Result has 100 places, 90 transitions, 313 flow [2024-11-10 22:22:16,077 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=313, PETRI_PLACES=100, PETRI_TRANSITIONS=90} [2024-11-10 22:22:16,078 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 24 predicate places. [2024-11-10 22:22:16,078 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 90 transitions, 313 flow [2024-11-10 22:22:16,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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 22:22:16,078 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:22:16,078 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:22:16,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 22:22:16,079 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:22:16,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:22:16,079 INFO L85 PathProgramCache]: Analyzing trace with hash 7153414, now seen corresponding path program 1 times [2024-11-10 22:22:16,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:22:16,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524780214] [2024-11-10 22:22:16,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:16,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:22:16,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:16,150 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 22:22:16,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:22:16,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524780214] [2024-11-10 22:22:16,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524780214] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:22:16,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794405493] [2024-11-10 22:22:16,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:16,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:22:16,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:22:16,152 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:22:16,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 22:22:16,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:16,220 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 22:22:16,221 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:22:16,276 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 22:22:16,277 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:22:16,315 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 22:22:16,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794405493] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:22:16,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:22:16,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-10 22:22:16,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067855906] [2024-11-10 22:22:16,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:22:16,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 22:22:16,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:22:16,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 22:22:16,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-10 22:22:16,329 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 84 [2024-11-10 22:22:16,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 90 transitions, 313 flow. Second operand has 10 states, 10 states have (on average 38.8) internal successors, (388), 10 states have internal predecessors, (388), 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 22:22:16,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:22:16,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 84 [2024-11-10 22:22:16,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:22:16,681 INFO L124 PetriNetUnfolderBase]: 1830/4360 cut-off events. [2024-11-10 22:22:16,681 INFO L125 PetriNetUnfolderBase]: For 1290/1324 co-relation queries the response was YES. [2024-11-10 22:22:16,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8458 conditions, 4360 events. 1830/4360 cut-off events. For 1290/1324 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 35284 event pairs, 1375 based on Foata normal form. 2/3728 useless extension candidates. Maximal degree in co-relation 8426. Up to 2859 conditions per place. [2024-11-10 22:22:16,699 INFO L140 encePairwiseOnDemand]: 80/84 looper letters, 44 selfloop transitions, 10 changer transitions 0/88 dead transitions. [2024-11-10 22:22:16,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 88 transitions, 411 flow [2024-11-10 22:22:16,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 22:22:16,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 22:22:16,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 305 transitions. [2024-11-10 22:22:16,701 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5187074829931972 [2024-11-10 22:22:16,701 INFO L175 Difference]: Start difference. First operand has 100 places, 90 transitions, 313 flow. Second operand 7 states and 305 transitions. [2024-11-10 22:22:16,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 88 transitions, 411 flow [2024-11-10 22:22:16,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 88 transitions, 407 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:22:16,704 INFO L231 Difference]: Finished difference. Result has 106 places, 88 transitions, 331 flow [2024-11-10 22:22:16,704 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=331, PETRI_PLACES=106, PETRI_TRANSITIONS=88} [2024-11-10 22:22:16,705 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 30 predicate places. [2024-11-10 22:22:16,705 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 88 transitions, 331 flow [2024-11-10 22:22:16,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 38.8) internal successors, (388), 10 states have internal predecessors, (388), 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 22:22:16,705 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:22:16,705 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1] [2024-11-10 22:22:16,718 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 22:22:16,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:22:16,906 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:22:16,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:22:16,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1533328689, now seen corresponding path program 2 times [2024-11-10 22:22:16,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:22:16,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618758652] [2024-11-10 22:22:16,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:16,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:22:16,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:17,007 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 28 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:22:17,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:22:17,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618758652] [2024-11-10 22:22:17,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618758652] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:22:17,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867378404] [2024-11-10 22:22:17,008 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:22:17,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:22:17,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:22:17,010 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:22:17,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 22:22:17,063 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 22:22:17,063 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:22:17,064 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:22:17,065 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:22:17,098 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 22:22:17,098 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:22:17,149 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 22:22:17,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867378404] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:22:17,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:22:17,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 2, 2] total 12 [2024-11-10 22:22:17,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091295101] [2024-11-10 22:22:17,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:22:17,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-10 22:22:17,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:22:17,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-10 22:22:17,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-11-10 22:22:17,169 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 84 [2024-11-10 22:22:17,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 88 transitions, 331 flow. Second operand has 13 states, 13 states have (on average 38.61538461538461) internal successors, (502), 13 states have internal predecessors, (502), 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 22:22:17,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:22:17,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 84 [2024-11-10 22:22:17,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:22:17,660 INFO L124 PetriNetUnfolderBase]: 1828/4350 cut-off events. [2024-11-10 22:22:17,660 INFO L125 PetriNetUnfolderBase]: For 1298/1332 co-relation queries the response was YES. [2024-11-10 22:22:17,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8435 conditions, 4350 events. 1828/4350 cut-off events. For 1298/1332 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 35278 event pairs, 1375 based on Foata normal form. 1/3717 useless extension candidates. Maximal degree in co-relation 8417. Up to 2853 conditions per place. [2024-11-10 22:22:17,679 INFO L140 encePairwiseOnDemand]: 80/84 looper letters, 40 selfloop transitions, 8 changer transitions 0/82 dead transitions. [2024-11-10 22:22:17,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 82 transitions, 372 flow [2024-11-10 22:22:17,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 22:22:17,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-10 22:22:17,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 376 transitions. [2024-11-10 22:22:17,681 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4973544973544973 [2024-11-10 22:22:17,681 INFO L175 Difference]: Start difference. First operand has 106 places, 88 transitions, 331 flow. Second operand 9 states and 376 transitions. [2024-11-10 22:22:17,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 82 transitions, 372 flow [2024-11-10 22:22:17,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 82 transitions, 340 flow, removed 0 selfloop flow, removed 13 redundant places. [2024-11-10 22:22:17,684 INFO L231 Difference]: Finished difference. Result has 99 places, 82 transitions, 260 flow [2024-11-10 22:22:17,684 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=260, PETRI_PLACES=99, PETRI_TRANSITIONS=82} [2024-11-10 22:22:17,684 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 23 predicate places. [2024-11-10 22:22:17,684 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 82 transitions, 260 flow [2024-11-10 22:22:17,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 38.61538461538461) internal successors, (502), 13 states have internal predecessors, (502), 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 22:22:17,685 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:22:17,685 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:22:17,698 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-10 22:22:17,885 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 [2024-11-10 22:22:17,886 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:22:17,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:22:17,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1246657512, now seen corresponding path program 2 times [2024-11-10 22:22:17,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:22:17,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40652357] [2024-11-10 22:22:17,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:17,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:22:17,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:17,951 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-10 22:22:17,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:22:17,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40652357] [2024-11-10 22:22:17,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40652357] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:22:17,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001013961] [2024-11-10 22:22:17,952 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:22:17,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:22:17,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:22:17,954 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:22:17,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 22:22:18,014 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 22:22:18,015 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:22:18,015 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:22:18,016 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:22:18,036 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-10 22:22:18,036 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:22:18,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001013961] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:22:18,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:22:18,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-10 22:22:18,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873501622] [2024-11-10 22:22:18,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:22:18,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:22:18,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:22:18,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:22:18,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-10 22:22:18,041 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 84 [2024-11-10 22:22:18,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 82 transitions, 260 flow. Second operand has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 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 22:22:18,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:22:18,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 84 [2024-11-10 22:22:18,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:22:18,331 INFO L124 PetriNetUnfolderBase]: 2119/4626 cut-off events. [2024-11-10 22:22:18,332 INFO L125 PetriNetUnfolderBase]: For 1164/1180 co-relation queries the response was YES. [2024-11-10 22:22:18,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9232 conditions, 4626 events. 2119/4626 cut-off events. For 1164/1180 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 35765 event pairs, 1273 based on Foata normal form. 52/4006 useless extension candidates. Maximal degree in co-relation 9218. Up to 2633 conditions per place. [2024-11-10 22:22:18,354 INFO L140 encePairwiseOnDemand]: 80/84 looper letters, 63 selfloop transitions, 5 changer transitions 0/100 dead transitions. [2024-11-10 22:22:18,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 100 transitions, 443 flow [2024-11-10 22:22:18,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:22:18,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:22:18,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 205 transitions. [2024-11-10 22:22:18,355 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6101190476190477 [2024-11-10 22:22:18,355 INFO L175 Difference]: Start difference. First operand has 99 places, 82 transitions, 260 flow. Second operand 4 states and 205 transitions. [2024-11-10 22:22:18,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 100 transitions, 443 flow [2024-11-10 22:22:18,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 100 transitions, 427 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-10 22:22:18,360 INFO L231 Difference]: Finished difference. Result has 93 places, 81 transitions, 250 flow [2024-11-10 22:22:18,360 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=250, PETRI_PLACES=93, PETRI_TRANSITIONS=81} [2024-11-10 22:22:18,360 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 17 predicate places. [2024-11-10 22:22:18,360 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 81 transitions, 250 flow [2024-11-10 22:22:18,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 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 22:22:18,361 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:22:18,361 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:22:18,374 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-10 22:22:18,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-10 22:22:18,562 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:22:18,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:22:18,562 INFO L85 PathProgramCache]: Analyzing trace with hash -8322126, now seen corresponding path program 1 times [2024-11-10 22:22:18,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:22:18,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887034860] [2024-11-10 22:22:18,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:18,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:22:18,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:18,621 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-10 22:22:18,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:22:18,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887034860] [2024-11-10 22:22:18,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887034860] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:22:18,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:22:18,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:22:18,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814472747] [2024-11-10 22:22:18,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:22:18,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:22:18,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:22:18,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:22:18,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:22:18,628 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 84 [2024-11-10 22:22:18,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 81 transitions, 250 flow. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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 22:22:18,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:22:18,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 84 [2024-11-10 22:22:18,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:22:18,914 INFO L124 PetriNetUnfolderBase]: 1852/4291 cut-off events. [2024-11-10 22:22:18,914 INFO L125 PetriNetUnfolderBase]: For 1886/1894 co-relation queries the response was YES. [2024-11-10 22:22:18,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8568 conditions, 4291 events. 1852/4291 cut-off events. For 1886/1894 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 33933 event pairs, 1249 based on Foata normal form. 52/3751 useless extension candidates. Maximal degree in co-relation 8554. Up to 2634 conditions per place. [2024-11-10 22:22:18,932 INFO L140 encePairwiseOnDemand]: 81/84 looper letters, 62 selfloop transitions, 4 changer transitions 0/99 dead transitions. [2024-11-10 22:22:18,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 99 transitions, 429 flow [2024-11-10 22:22:18,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:22:18,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:22:18,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 169 transitions. [2024-11-10 22:22:18,933 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6706349206349206 [2024-11-10 22:22:18,933 INFO L175 Difference]: Start difference. First operand has 93 places, 81 transitions, 250 flow. Second operand 3 states and 169 transitions. [2024-11-10 22:22:18,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 99 transitions, 429 flow [2024-11-10 22:22:18,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 99 transitions, 419 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:22:18,937 INFO L231 Difference]: Finished difference. Result has 91 places, 80 transitions, 244 flow [2024-11-10 22:22:18,937 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=91, PETRI_TRANSITIONS=80} [2024-11-10 22:22:18,937 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 15 predicate places. [2024-11-10 22:22:18,938 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 80 transitions, 244 flow [2024-11-10 22:22:18,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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 22:22:18,938 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:22:18,938 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:22:18,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-10 22:22:18,938 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:22:18,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:22:18,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1007601761, now seen corresponding path program 1 times [2024-11-10 22:22:18,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:22:18,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167032325] [2024-11-10 22:22:18,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:18,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:22:18,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:18,988 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-10 22:22:18,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:22:18,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167032325] [2024-11-10 22:22:18,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167032325] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:22:18,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:22:18,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 22:22:18,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448742120] [2024-11-10 22:22:18,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:22:18,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:22:18,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:22:18,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:22:18,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:22:18,991 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 84 [2024-11-10 22:22:18,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 80 transitions, 244 flow. Second operand has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 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 22:22:18,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:22:18,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 84 [2024-11-10 22:22:18,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:22:19,308 INFO L124 PetriNetUnfolderBase]: 1577/3452 cut-off events. [2024-11-10 22:22:19,308 INFO L125 PetriNetUnfolderBase]: For 1691/1699 co-relation queries the response was YES. [2024-11-10 22:22:19,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7288 conditions, 3452 events. 1577/3452 cut-off events. For 1691/1699 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 24269 event pairs, 719 based on Foata normal form. 0/3101 useless extension candidates. Maximal degree in co-relation 7274. Up to 1478 conditions per place. [2024-11-10 22:22:19,320 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 97 selfloop transitions, 4 changer transitions 12/146 dead transitions. [2024-11-10 22:22:19,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 146 transitions, 728 flow [2024-11-10 22:22:19,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:22:19,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:22:19,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 294 transitions. [2024-11-10 22:22:19,322 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-11-10 22:22:19,322 INFO L175 Difference]: Start difference. First operand has 91 places, 80 transitions, 244 flow. Second operand 5 states and 294 transitions. [2024-11-10 22:22:19,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 146 transitions, 728 flow [2024-11-10 22:22:19,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 146 transitions, 696 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:22:19,327 INFO L231 Difference]: Finished difference. Result has 96 places, 82 transitions, 261 flow [2024-11-10 22:22:19,327 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=261, PETRI_PLACES=96, PETRI_TRANSITIONS=82} [2024-11-10 22:22:19,328 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 20 predicate places. [2024-11-10 22:22:19,328 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 82 transitions, 261 flow [2024-11-10 22:22:19,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 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 22:22:19,328 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:22:19,328 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:22:19,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-10 22:22:19,328 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:22:19,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:22:19,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1137437484, now seen corresponding path program 1 times [2024-11-10 22:22:19,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:22:19,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371697292] [2024-11-10 22:22:19,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:19,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:22:19,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:19,400 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-10 22:22:19,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:22:19,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371697292] [2024-11-10 22:22:19,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371697292] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:22:19,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379224169] [2024-11-10 22:22:19,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:19,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:22:19,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:22:19,403 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:22:19,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 22:22:19,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:19,468 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:22:19,469 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:22:19,496 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-10 22:22:19,496 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:22:19,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379224169] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:22:19,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:22:19,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-10 22:22:19,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700204860] [2024-11-10 22:22:19,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:22:19,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:22:19,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:22:19,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:22:19,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:22:19,504 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 84 [2024-11-10 22:22:19,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 82 transitions, 261 flow. Second operand has 6 states, 6 states have (on average 40.333333333333336) internal successors, (242), 6 states have internal predecessors, (242), 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 22:22:19,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:22:19,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 84 [2024-11-10 22:22:19,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:22:19,878 INFO L124 PetriNetUnfolderBase]: 1666/3469 cut-off events. [2024-11-10 22:22:19,878 INFO L125 PetriNetUnfolderBase]: For 1770/1770 co-relation queries the response was YES. [2024-11-10 22:22:19,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7797 conditions, 3469 events. 1666/3469 cut-off events. For 1770/1770 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 23455 event pairs, 77 based on Foata normal form. 47/3209 useless extension candidates. Maximal degree in co-relation 7781. Up to 1461 conditions per place. [2024-11-10 22:22:19,890 INFO L140 encePairwiseOnDemand]: 80/84 looper letters, 128 selfloop transitions, 5 changer transitions 0/164 dead transitions. [2024-11-10 22:22:19,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 164 transitions, 825 flow [2024-11-10 22:22:19,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:22:19,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:22:19,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 338 transitions. [2024-11-10 22:22:19,891 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6706349206349206 [2024-11-10 22:22:19,892 INFO L175 Difference]: Start difference. First operand has 96 places, 82 transitions, 261 flow. Second operand 6 states and 338 transitions. [2024-11-10 22:22:19,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 164 transitions, 825 flow [2024-11-10 22:22:19,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 164 transitions, 825 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 22:22:19,895 INFO L231 Difference]: Finished difference. Result has 100 places, 81 transitions, 267 flow [2024-11-10 22:22:19,896 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=267, PETRI_PLACES=100, PETRI_TRANSITIONS=81} [2024-11-10 22:22:19,896 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 24 predicate places. [2024-11-10 22:22:19,897 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 81 transitions, 267 flow [2024-11-10 22:22:19,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 40.333333333333336) internal successors, (242), 6 states have internal predecessors, (242), 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 22:22:19,897 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:22:19,897 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:22:19,910 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-10 22:22:20,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:22:20,098 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:22:20,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:22:20,098 INFO L85 PathProgramCache]: Analyzing trace with hash 591314549, now seen corresponding path program 1 times [2024-11-10 22:22:20,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:22:20,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142728709] [2024-11-10 22:22:20,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:20,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:22:20,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:20,195 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-10 22:22:20,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:22:20,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142728709] [2024-11-10 22:22:20,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142728709] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:22:20,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355842463] [2024-11-10 22:22:20,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:20,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:22:20,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:22:20,199 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:22:20,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 22:22:20,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:20,268 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-10 22:22:20,269 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:22:20,295 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-10 22:22:20,295 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:22:20,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355842463] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:22:20,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:22:20,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-10 22:22:20,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145546267] [2024-11-10 22:22:20,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:22:20,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:22:20,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:22:20,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:22:20,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:22:20,318 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 84 [2024-11-10 22:22:20,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 81 transitions, 267 flow. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:22:20,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:22:20,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 84 [2024-11-10 22:22:20,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:22:20,714 INFO L124 PetriNetUnfolderBase]: 2050/4518 cut-off events. [2024-11-10 22:22:20,714 INFO L125 PetriNetUnfolderBase]: For 2955/2969 co-relation queries the response was YES. [2024-11-10 22:22:20,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9891 conditions, 4518 events. 2050/4518 cut-off events. For 2955/2969 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 33446 event pairs, 1243 based on Foata normal form. 92/4133 useless extension candidates. Maximal degree in co-relation 9874. Up to 2435 conditions per place. [2024-11-10 22:22:20,731 INFO L140 encePairwiseOnDemand]: 75/84 looper letters, 114 selfloop transitions, 6 changer transitions 0/147 dead transitions. [2024-11-10 22:22:20,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 147 transitions, 771 flow [2024-11-10 22:22:20,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:22:20,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:22:20,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 274 transitions. [2024-11-10 22:22:20,733 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6523809523809524 [2024-11-10 22:22:20,733 INFO L175 Difference]: Start difference. First operand has 100 places, 81 transitions, 267 flow. Second operand 5 states and 274 transitions. [2024-11-10 22:22:20,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 147 transitions, 771 flow [2024-11-10 22:22:20,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 147 transitions, 735 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-10 22:22:20,737 INFO L231 Difference]: Finished difference. Result has 102 places, 83 transitions, 294 flow [2024-11-10 22:22:20,737 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=294, PETRI_PLACES=102, PETRI_TRANSITIONS=83} [2024-11-10 22:22:20,737 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 26 predicate places. [2024-11-10 22:22:20,737 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 83 transitions, 294 flow [2024-11-10 22:22:20,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:22:20,738 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:22:20,738 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:22:20,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-10 22:22:20,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:22:20,943 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:22:20,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:22:20,943 INFO L85 PathProgramCache]: Analyzing trace with hash -900822939, now seen corresponding path program 1 times [2024-11-10 22:22:20,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:22:20,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197846183] [2024-11-10 22:22:20,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:20,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:22:20,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:20,988 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-10 22:22:20,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:22:20,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197846183] [2024-11-10 22:22:20,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197846183] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:22:20,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:22:20,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:22:20,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233945253] [2024-11-10 22:22:20,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:22:20,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:22:20,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:22:20,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:22:20,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:22:20,993 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 84 [2024-11-10 22:22:20,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 83 transitions, 294 flow. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 22:22:20,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:22:20,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 84 [2024-11-10 22:22:20,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:22:21,269 INFO L124 PetriNetUnfolderBase]: 1735/4043 cut-off events. [2024-11-10 22:22:21,270 INFO L125 PetriNetUnfolderBase]: For 2641/2667 co-relation queries the response was YES. [2024-11-10 22:22:21,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9062 conditions, 4043 events. 1735/4043 cut-off events. For 2641/2667 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 30375 event pairs, 1286 based on Foata normal form. 67/3733 useless extension candidates. Maximal degree in co-relation 9044. Up to 2520 conditions per place. [2024-11-10 22:22:21,288 INFO L140 encePairwiseOnDemand]: 81/84 looper letters, 69 selfloop transitions, 4 changer transitions 0/104 dead transitions. [2024-11-10 22:22:21,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 104 transitions, 535 flow [2024-11-10 22:22:21,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:22:21,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:22:21,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 168 transitions. [2024-11-10 22:22:21,289 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-10 22:22:21,289 INFO L175 Difference]: Start difference. First operand has 102 places, 83 transitions, 294 flow. Second operand 3 states and 168 transitions. [2024-11-10 22:22:21,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 104 transitions, 535 flow [2024-11-10 22:22:21,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 104 transitions, 528 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-10 22:22:21,294 INFO L231 Difference]: Finished difference. Result has 101 places, 82 transitions, 292 flow [2024-11-10 22:22:21,294 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=292, PETRI_PLACES=101, PETRI_TRANSITIONS=82} [2024-11-10 22:22:21,295 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 25 predicate places. [2024-11-10 22:22:21,295 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 82 transitions, 292 flow [2024-11-10 22:22:21,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 22:22:21,296 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:22:21,296 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:22:21,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-10 22:22:21,296 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:22:21,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:22:21,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1150882508, now seen corresponding path program 1 times [2024-11-10 22:22:21,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:22:21,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984842009] [2024-11-10 22:22:21,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:21,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:22:21,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:21,354 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-10 22:22:21,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:22:21,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984842009] [2024-11-10 22:22:21,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984842009] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:22:21,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695689155] [2024-11-10 22:22:21,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:21,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:22:21,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:22:21,356 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:22:21,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-10 22:22:21,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:21,427 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:22:21,428 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:22:21,463 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-10 22:22:21,464 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:22:21,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695689155] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:22:21,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:22:21,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2024-11-10 22:22:21,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846221430] [2024-11-10 22:22:21,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:22:21,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:22:21,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:22:21,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:22:21,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:22:21,477 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 84 [2024-11-10 22:22:21,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 82 transitions, 292 flow. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 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 22:22:21,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:22:21,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 84 [2024-11-10 22:22:21,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:22:21,745 INFO L124 PetriNetUnfolderBase]: 1833/4179 cut-off events. [2024-11-10 22:22:21,745 INFO L125 PetriNetUnfolderBase]: For 2895/2899 co-relation queries the response was YES. [2024-11-10 22:22:21,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9533 conditions, 4179 events. 1833/4179 cut-off events. For 2895/2899 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 30951 event pairs, 1060 based on Foata normal form. 50/3872 useless extension candidates. Maximal degree in co-relation 9515. Up to 2021 conditions per place. [2024-11-10 22:22:21,763 INFO L140 encePairwiseOnDemand]: 80/84 looper letters, 69 selfloop transitions, 4 changer transitions 0/102 dead transitions. [2024-11-10 22:22:21,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 102 transitions, 517 flow [2024-11-10 22:22:21,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:22:21,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:22:21,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 204 transitions. [2024-11-10 22:22:21,764 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2024-11-10 22:22:21,764 INFO L175 Difference]: Start difference. First operand has 101 places, 82 transitions, 292 flow. Second operand 4 states and 204 transitions. [2024-11-10 22:22:21,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 102 transitions, 517 flow [2024-11-10 22:22:21,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 102 transitions, 501 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:22:21,769 INFO L231 Difference]: Finished difference. Result has 101 places, 81 transitions, 290 flow [2024-11-10 22:22:21,769 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=290, PETRI_PLACES=101, PETRI_TRANSITIONS=81} [2024-11-10 22:22:21,770 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 25 predicate places. [2024-11-10 22:22:21,770 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 81 transitions, 290 flow [2024-11-10 22:22:21,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 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 22:22:21,770 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:22:21,770 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:22:21,786 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-10 22:22:21,971 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,SelfDestructingSolverStorable15 [2024-11-10 22:22:21,971 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:22:21,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:22:21,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1317589305, now seen corresponding path program 1 times [2024-11-10 22:22:21,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:22:21,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699206510] [2024-11-10 22:22:21,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:21,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:22:21,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:22,021 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-10 22:22:22,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:22:22,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699206510] [2024-11-10 22:22:22,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699206510] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:22:22,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606201576] [2024-11-10 22:22:22,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:22,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:22:22,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:22:22,024 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:22:22,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-10 22:22:22,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:22,088 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:22:22,089 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:22:22,127 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-10 22:22:22,127 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:22:22,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606201576] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:22:22,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:22:22,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2024-11-10 22:22:22,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879862125] [2024-11-10 22:22:22,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:22:22,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:22:22,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:22:22,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:22:22,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:22:22,138 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 84 [2024-11-10 22:22:22,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 81 transitions, 290 flow. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 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 22:22:22,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:22:22,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 84 [2024-11-10 22:22:22,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:22:22,414 INFO L124 PetriNetUnfolderBase]: 1837/4141 cut-off events. [2024-11-10 22:22:22,414 INFO L125 PetriNetUnfolderBase]: For 2941/2945 co-relation queries the response was YES. [2024-11-10 22:22:22,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9438 conditions, 4141 events. 1837/4141 cut-off events. For 2941/2945 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 30259 event pairs, 1060 based on Foata normal form. 50/3834 useless extension candidates. Maximal degree in co-relation 9420. Up to 2021 conditions per place. [2024-11-10 22:22:22,429 INFO L140 encePairwiseOnDemand]: 80/84 looper letters, 70 selfloop transitions, 4 changer transitions 0/101 dead transitions. [2024-11-10 22:22:22,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 101 transitions, 507 flow [2024-11-10 22:22:22,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:22:22,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:22:22,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 200 transitions. [2024-11-10 22:22:22,430 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2024-11-10 22:22:22,430 INFO L175 Difference]: Start difference. First operand has 101 places, 81 transitions, 290 flow. Second operand 4 states and 200 transitions. [2024-11-10 22:22:22,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 101 transitions, 507 flow [2024-11-10 22:22:22,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 101 transitions, 499 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:22:22,435 INFO L231 Difference]: Finished difference. Result has 100 places, 80 transitions, 286 flow [2024-11-10 22:22:22,435 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=286, PETRI_PLACES=100, PETRI_TRANSITIONS=80} [2024-11-10 22:22:22,435 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 24 predicate places. [2024-11-10 22:22:22,435 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 80 transitions, 286 flow [2024-11-10 22:22:22,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 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 22:22:22,436 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:22:22,436 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:22:22,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-10 22:22:22,636 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,SelfDestructingSolverStorable16 [2024-11-10 22:22:22,636 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:22:22,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:22:22,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1891494440, now seen corresponding path program 1 times [2024-11-10 22:22:22,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:22:22,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271473620] [2024-11-10 22:22:22,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:22,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:22:22,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:22,708 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-10 22:22:22,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:22:22,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271473620] [2024-11-10 22:22:22,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271473620] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:22:22,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:22:22,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:22:22,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790924198] [2024-11-10 22:22:22,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:22:22,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:22:22,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:22:22,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:22:22,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:22:22,723 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 84 [2024-11-10 22:22:22,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 80 transitions, 286 flow. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 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 22:22:22,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:22:22,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 84 [2024-11-10 22:22:22,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:22:22,982 INFO L124 PetriNetUnfolderBase]: 1880/4054 cut-off events. [2024-11-10 22:22:22,983 INFO L125 PetriNetUnfolderBase]: For 2843/2863 co-relation queries the response was YES. [2024-11-10 22:22:22,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9399 conditions, 4054 events. 1880/4054 cut-off events. For 2843/2863 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 28634 event pairs, 1200 based on Foata normal form. 122/3777 useless extension candidates. Maximal degree in co-relation 9381. Up to 2258 conditions per place. [2024-11-10 22:22:23,028 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 72 selfloop transitions, 3 changer transitions 0/100 dead transitions. [2024-11-10 22:22:23,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 100 transitions, 536 flow [2024-11-10 22:22:23,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:22:23,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:22:23,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 201 transitions. [2024-11-10 22:22:23,030 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5982142857142857 [2024-11-10 22:22:23,030 INFO L175 Difference]: Start difference. First operand has 100 places, 80 transitions, 286 flow. Second operand 4 states and 201 transitions. [2024-11-10 22:22:23,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 100 transitions, 536 flow [2024-11-10 22:22:23,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 100 transitions, 522 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:22:23,034 INFO L231 Difference]: Finished difference. Result has 98 places, 78 transitions, 280 flow [2024-11-10 22:22:23,034 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=280, PETRI_PLACES=98, PETRI_TRANSITIONS=78} [2024-11-10 22:22:23,034 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 22 predicate places. [2024-11-10 22:22:23,035 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 78 transitions, 280 flow [2024-11-10 22:22:23,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 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 22:22:23,035 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:22:23,035 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:22:23,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-10 22:22:23,035 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:22:23,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:22:23,035 INFO L85 PathProgramCache]: Analyzing trace with hash -2104404818, now seen corresponding path program 1 times [2024-11-10 22:22:23,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:22:23,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17481146] [2024-11-10 22:22:23,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:23,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:22:23,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:23,083 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-10 22:22:23,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:22:23,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17481146] [2024-11-10 22:22:23,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17481146] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:22:23,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486998682] [2024-11-10 22:22:23,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:23,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:22:23,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:22:23,086 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) [2024-11-10 22:22:23,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-10 22:22:23,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:23,156 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 22:22:23,157 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:22:23,219 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-10 22:22:23,219 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:22:23,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486998682] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:22:23,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:22:23,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2024-11-10 22:22:23,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283992792] [2024-11-10 22:22:23,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:22:23,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:22:23,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:22:23,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:22:23,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-10 22:22:23,248 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 84 [2024-11-10 22:22:23,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 78 transitions, 280 flow. Second operand has 5 states, 5 states have (on average 37.2) internal successors, (186), 5 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) [2024-11-10 22:22:23,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:22:23,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 84 [2024-11-10 22:22:23,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:22:23,591 INFO L124 PetriNetUnfolderBase]: 1923/4159 cut-off events. [2024-11-10 22:22:23,591 INFO L125 PetriNetUnfolderBase]: For 2647/2647 co-relation queries the response was YES. [2024-11-10 22:22:23,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9572 conditions, 4159 events. 1923/4159 cut-off events. For 2647/2647 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 29344 event pairs, 1356 based on Foata normal form. 92/4034 useless extension candidates. Maximal degree in co-relation 9554. Up to 2601 conditions per place. [2024-11-10 22:22:23,608 INFO L140 encePairwiseOnDemand]: 76/84 looper letters, 112 selfloop transitions, 6 changer transitions 0/141 dead transitions. [2024-11-10 22:22:23,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 141 transitions, 743 flow [2024-11-10 22:22:23,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:22:23,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:22:23,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 300 transitions. [2024-11-10 22:22:23,609 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2024-11-10 22:22:23,609 INFO L175 Difference]: Start difference. First operand has 98 places, 78 transitions, 280 flow. Second operand 6 states and 300 transitions. [2024-11-10 22:22:23,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 141 transitions, 743 flow [2024-11-10 22:22:23,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 141 transitions, 722 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 22:22:23,616 INFO L231 Difference]: Finished difference. Result has 100 places, 77 transitions, 281 flow [2024-11-10 22:22:23,616 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=281, PETRI_PLACES=100, PETRI_TRANSITIONS=77} [2024-11-10 22:22:23,616 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 24 predicate places. [2024-11-10 22:22:23,616 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 77 transitions, 281 flow [2024-11-10 22:22:23,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.2) internal successors, (186), 5 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) [2024-11-10 22:22:23,617 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:22:23,617 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:22:23,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-10 22:22:23,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:22:23,818 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:22:23,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:22:23,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1493213800, now seen corresponding path program 1 times [2024-11-10 22:22:23,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:22:23,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552410575] [2024-11-10 22:22:23,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:23,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:22:23,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:23,874 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-10 22:22:23,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:22:23,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552410575] [2024-11-10 22:22:23,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552410575] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:22:23,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052729322] [2024-11-10 22:22:23,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:23,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:22:23,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:22:23,879 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) [2024-11-10 22:22:23,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-10 22:22:23,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:23,948 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:22:23,949 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:22:24,037 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-10 22:22:24,037 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:22:24,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052729322] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:22:24,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:22:24,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2024-11-10 22:22:24,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002583862] [2024-11-10 22:22:24,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:22:24,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:22:24,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:22:24,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:22:24,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:22:24,066 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 84 [2024-11-10 22:22:24,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 77 transitions, 281 flow. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 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 22:22:24,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:22:24,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 84 [2024-11-10 22:22:24,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:22:24,492 INFO L124 PetriNetUnfolderBase]: 1698/3797 cut-off events. [2024-11-10 22:22:24,492 INFO L125 PetriNetUnfolderBase]: For 2623/2639 co-relation queries the response was YES. [2024-11-10 22:22:24,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8774 conditions, 3797 events. 1698/3797 cut-off events. For 2623/2639 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 27113 event pairs, 1200 based on Foata normal form. 16/3576 useless extension candidates. Maximal degree in co-relation 8756. Up to 2258 conditions per place. [2024-11-10 22:22:24,510 INFO L140 encePairwiseOnDemand]: 80/84 looper letters, 70 selfloop transitions, 3 changer transitions 0/98 dead transitions. [2024-11-10 22:22:24,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 98 transitions, 530 flow [2024-11-10 22:22:24,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:22:24,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:22:24,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 202 transitions. [2024-11-10 22:22:24,511 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6011904761904762 [2024-11-10 22:22:24,512 INFO L175 Difference]: Start difference. First operand has 100 places, 77 transitions, 281 flow. Second operand 4 states and 202 transitions. [2024-11-10 22:22:24,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 98 transitions, 530 flow [2024-11-10 22:22:24,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 98 transitions, 512 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 22:22:24,517 INFO L231 Difference]: Finished difference. Result has 98 places, 76 transitions, 274 flow [2024-11-10 22:22:24,517 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=274, PETRI_PLACES=98, PETRI_TRANSITIONS=76} [2024-11-10 22:22:24,518 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 22 predicate places. [2024-11-10 22:22:24,518 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 76 transitions, 274 flow [2024-11-10 22:22:24,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 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 22:22:24,518 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:22:24,518 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:22:24,531 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-10 22:22:24,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:22:24,723 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:22:24,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:22:24,723 INFO L85 PathProgramCache]: Analyzing trace with hash -812039236, now seen corresponding path program 1 times [2024-11-10 22:22:24,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:22:24,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676863389] [2024-11-10 22:22:24,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:24,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:22:24,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:24,801 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-10 22:22:24,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:22:24,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676863389] [2024-11-10 22:22:24,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676863389] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:22:24,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035494580] [2024-11-10 22:22:24,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:24,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:22:24,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:22:24,805 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) [2024-11-10 22:22:24,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-10 22:22:24,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:24,916 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 22:22:24,918 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:22:24,995 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-10 22:22:24,995 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:22:24,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035494580] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:22:24,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:22:24,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2024-11-10 22:22:24,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867008751] [2024-11-10 22:22:24,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:22:24,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:22:24,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:22:24,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:22:24,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-10 22:22:25,034 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 84 [2024-11-10 22:22:25,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 76 transitions, 274 flow. Second operand has 6 states, 6 states have (on average 36.666666666666664) internal successors, (220), 6 states have internal predecessors, (220), 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 22:22:25,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:22:25,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 84 [2024-11-10 22:22:25,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:22:25,463 INFO L124 PetriNetUnfolderBase]: 2145/4424 cut-off events. [2024-11-10 22:22:25,464 INFO L125 PetriNetUnfolderBase]: For 2855/2859 co-relation queries the response was YES. [2024-11-10 22:22:25,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10454 conditions, 4424 events. 2145/4424 cut-off events. For 2855/2859 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 30346 event pairs, 1052 based on Foata normal form. 96/4363 useless extension candidates. Maximal degree in co-relation 10436. Up to 2067 conditions per place. [2024-11-10 22:22:25,480 INFO L140 encePairwiseOnDemand]: 75/84 looper letters, 129 selfloop transitions, 11 changer transitions 0/162 dead transitions. [2024-11-10 22:22:25,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 162 transitions, 870 flow [2024-11-10 22:22:25,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 22:22:25,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 22:22:25,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 349 transitions. [2024-11-10 22:22:25,482 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5935374149659864 [2024-11-10 22:22:25,482 INFO L175 Difference]: Start difference. First operand has 98 places, 76 transitions, 274 flow. Second operand 7 states and 349 transitions. [2024-11-10 22:22:25,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 162 transitions, 870 flow [2024-11-10 22:22:25,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 162 transitions, 848 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:22:25,488 INFO L231 Difference]: Finished difference. Result has 103 places, 78 transitions, 308 flow [2024-11-10 22:22:25,489 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=308, PETRI_PLACES=103, PETRI_TRANSITIONS=78} [2024-11-10 22:22:25,489 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 27 predicate places. [2024-11-10 22:22:25,489 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 78 transitions, 308 flow [2024-11-10 22:22:25,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.666666666666664) internal successors, (220), 6 states have internal predecessors, (220), 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 22:22:25,489 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:22:25,489 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:22:25,502 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-10 22:22:25,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-10 22:22:25,693 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:22:25,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:22:25,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1515277077, now seen corresponding path program 1 times [2024-11-10 22:22:25,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:22:25,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300361120] [2024-11-10 22:22:25,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:25,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:22:25,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:25,752 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-10 22:22:25,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:22:25,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300361120] [2024-11-10 22:22:25,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300361120] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:22:25,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100742244] [2024-11-10 22:22:25,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:25,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:22:25,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:22:25,755 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:22:25,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-10 22:22:25,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:25,824 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-10 22:22:25,825 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:22:25,846 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-10 22:22:25,846 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:22:25,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100742244] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:22:25,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:22:25,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-10 22:22:25,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524749908] [2024-11-10 22:22:25,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:22:25,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:22:25,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:22:25,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:22:25,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:22:25,864 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 84 [2024-11-10 22:22:25,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 78 transitions, 308 flow. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 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 22:22:25,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:22:25,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 84 [2024-11-10 22:22:25,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:22:26,185 INFO L124 PetriNetUnfolderBase]: 1979/4178 cut-off events. [2024-11-10 22:22:26,186 INFO L125 PetriNetUnfolderBase]: For 3781/3805 co-relation queries the response was YES. [2024-11-10 22:22:26,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10396 conditions, 4178 events. 1979/4178 cut-off events. For 3781/3805 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 28952 event pairs, 1278 based on Foata normal form. 70/4081 useless extension candidates. Maximal degree in co-relation 10376. Up to 2510 conditions per place. [2024-11-10 22:22:26,204 INFO L140 encePairwiseOnDemand]: 78/84 looper letters, 111 selfloop transitions, 6 changer transitions 0/140 dead transitions. [2024-11-10 22:22:26,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 140 transitions, 754 flow [2024-11-10 22:22:26,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:22:26,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:22:26,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 267 transitions. [2024-11-10 22:22:26,205 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6357142857142857 [2024-11-10 22:22:26,205 INFO L175 Difference]: Start difference. First operand has 103 places, 78 transitions, 308 flow. Second operand 5 states and 267 transitions. [2024-11-10 22:22:26,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 140 transitions, 754 flow [2024-11-10 22:22:26,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 140 transitions, 741 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 22:22:26,214 INFO L231 Difference]: Finished difference. Result has 102 places, 77 transitions, 300 flow [2024-11-10 22:22:26,214 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=300, PETRI_PLACES=102, PETRI_TRANSITIONS=77} [2024-11-10 22:22:26,215 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 26 predicate places. [2024-11-10 22:22:26,215 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 77 transitions, 300 flow [2024-11-10 22:22:26,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 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 22:22:26,215 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:22:26,215 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:22:26,228 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-10 22:22:26,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-10 22:22:26,416 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:22:26,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:22:26,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1515276084, now seen corresponding path program 1 times [2024-11-10 22:22:26,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:22:26,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291623971] [2024-11-10 22:22:26,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:26,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:22:26,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:26,478 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-10 22:22:26,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:22:26,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291623971] [2024-11-10 22:22:26,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291623971] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:22:26,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122101479] [2024-11-10 22:22:26,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:26,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:22:26,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:22:26,480 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:22:26,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-10 22:22:26,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:26,555 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-10 22:22:26,556 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:22:26,606 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-10 22:22:26,609 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:22:26,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122101479] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:22:26,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:22:26,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-10 22:22:26,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283111349] [2024-11-10 22:22:26,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:22:26,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:22:26,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:22:26,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:22:26,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:22:26,647 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 84 [2024-11-10 22:22:26,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 77 transitions, 300 flow. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:22:26,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:22:26,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 84 [2024-11-10 22:22:26,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:22:26,957 INFO L124 PetriNetUnfolderBase]: 2189/4332 cut-off events. [2024-11-10 22:22:26,957 INFO L125 PetriNetUnfolderBase]: For 3372/3382 co-relation queries the response was YES. [2024-11-10 22:22:26,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11038 conditions, 4332 events. 2189/4332 cut-off events. For 3372/3382 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 28639 event pairs, 1408 based on Foata normal form. 56/4236 useless extension candidates. Maximal degree in co-relation 11018. Up to 2742 conditions per place. [2024-11-10 22:22:26,972 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 89 selfloop transitions, 6 changer transitions 5/120 dead transitions. [2024-11-10 22:22:26,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 120 transitions, 652 flow [2024-11-10 22:22:26,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:22:26,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:22:26,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 222 transitions. [2024-11-10 22:22:26,973 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6607142857142857 [2024-11-10 22:22:26,974 INFO L175 Difference]: Start difference. First operand has 102 places, 77 transitions, 300 flow. Second operand 4 states and 222 transitions. [2024-11-10 22:22:26,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 120 transitions, 652 flow [2024-11-10 22:22:26,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 120 transitions, 630 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-11-10 22:22:26,982 INFO L231 Difference]: Finished difference. Result has 100 places, 77 transitions, 297 flow [2024-11-10 22:22:26,982 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=297, PETRI_PLACES=100, PETRI_TRANSITIONS=77} [2024-11-10 22:22:26,982 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 24 predicate places. [2024-11-10 22:22:26,983 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 77 transitions, 297 flow [2024-11-10 22:22:26,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:22:26,983 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:22:26,983 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:22:26,995 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-10 22:22:27,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:22:27,188 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:22:27,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:22:27,188 INFO L85 PathProgramCache]: Analyzing trace with hash -460315589, now seen corresponding path program 1 times [2024-11-10 22:22:27,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:22:27,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774548859] [2024-11-10 22:22:27,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:27,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:22:27,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:27,261 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-10 22:22:27,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:22:27,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774548859] [2024-11-10 22:22:27,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774548859] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:22:27,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489042624] [2024-11-10 22:22:27,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:27,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:22:27,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:22:27,263 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:22:27,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-10 22:22:27,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:27,335 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-10 22:22:27,336 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:22:27,379 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-10 22:22:27,380 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:22:27,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489042624] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:22:27,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:22:27,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-10 22:22:27,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802716057] [2024-11-10 22:22:27,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:22:27,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:22:27,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:22:27,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:22:27,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:22:27,416 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 84 [2024-11-10 22:22:27,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 77 transitions, 297 flow. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 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 22:22:27,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:22:27,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 84 [2024-11-10 22:22:27,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:22:27,791 INFO L124 PetriNetUnfolderBase]: 2264/4880 cut-off events. [2024-11-10 22:22:27,792 INFO L125 PetriNetUnfolderBase]: For 3778/3824 co-relation queries the response was YES. [2024-11-10 22:22:27,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11718 conditions, 4880 events. 2264/4880 cut-off events. For 3778/3824 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 35587 event pairs, 1592 based on Foata normal form. 36/4601 useless extension candidates. Maximal degree in co-relation 11699. Up to 3002 conditions per place. [2024-11-10 22:22:27,811 INFO L140 encePairwiseOnDemand]: 77/84 looper letters, 125 selfloop transitions, 6 changer transitions 0/153 dead transitions. [2024-11-10 22:22:27,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 153 transitions, 939 flow [2024-11-10 22:22:27,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:22:27,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:22:27,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 267 transitions. [2024-11-10 22:22:27,812 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6357142857142857 [2024-11-10 22:22:27,812 INFO L175 Difference]: Start difference. First operand has 100 places, 77 transitions, 297 flow. Second operand 5 states and 267 transitions. [2024-11-10 22:22:27,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 153 transitions, 939 flow [2024-11-10 22:22:27,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 153 transitions, 892 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-11-10 22:22:27,822 INFO L231 Difference]: Finished difference. Result has 104 places, 80 transitions, 318 flow [2024-11-10 22:22:27,823 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=318, PETRI_PLACES=104, PETRI_TRANSITIONS=80} [2024-11-10 22:22:27,823 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 28 predicate places. [2024-11-10 22:22:27,823 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 80 transitions, 318 flow [2024-11-10 22:22:27,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 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 22:22:27,824 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:22:27,824 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:22:27,837 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-10 22:22:28,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:22:28,029 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:22:28,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:22:28,029 INFO L85 PathProgramCache]: Analyzing trace with hash -460316582, now seen corresponding path program 1 times [2024-11-10 22:22:28,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:22:28,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359103417] [2024-11-10 22:22:28,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:28,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:22:28,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:28,089 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-10 22:22:28,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:22:28,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359103417] [2024-11-10 22:22:28,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359103417] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:22:28,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85625619] [2024-11-10 22:22:28,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:28,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:22:28,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:22:28,091 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:22:28,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-10 22:22:28,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:28,169 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 22:22:28,170 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:22:28,239 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-10 22:22:28,239 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:22:28,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85625619] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:22:28,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:22:28,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2024-11-10 22:22:28,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036743107] [2024-11-10 22:22:28,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:22:28,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:22:28,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:22:28,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:22:28,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-10 22:22:28,270 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 84 [2024-11-10 22:22:28,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 80 transitions, 318 flow. Second operand has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 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 22:22:28,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:22:28,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 84 [2024-11-10 22:22:28,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:22:28,710 INFO L124 PetriNetUnfolderBase]: 2592/5420 cut-off events. [2024-11-10 22:22:28,711 INFO L125 PetriNetUnfolderBase]: For 4586/4656 co-relation queries the response was YES. [2024-11-10 22:22:28,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13602 conditions, 5420 events. 2592/5420 cut-off events. For 4586/4656 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 39187 event pairs, 1896 based on Foata normal form. 105/5369 useless extension candidates. Maximal degree in co-relation 13581. Up to 3594 conditions per place. [2024-11-10 22:22:28,729 INFO L140 encePairwiseOnDemand]: 77/84 looper letters, 127 selfloop transitions, 6 changer transitions 0/154 dead transitions. [2024-11-10 22:22:28,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 154 transitions, 931 flow [2024-11-10 22:22:28,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:22:28,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:22:28,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 297 transitions. [2024-11-10 22:22:28,731 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5892857142857143 [2024-11-10 22:22:28,731 INFO L175 Difference]: Start difference. First operand has 104 places, 80 transitions, 318 flow. Second operand 6 states and 297 transitions. [2024-11-10 22:22:28,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 154 transitions, 931 flow [2024-11-10 22:22:28,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 154 transitions, 928 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:22:28,741 INFO L231 Difference]: Finished difference. Result has 109 places, 81 transitions, 339 flow [2024-11-10 22:22:28,741 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=339, PETRI_PLACES=109, PETRI_TRANSITIONS=81} [2024-11-10 22:22:28,742 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 33 predicate places. [2024-11-10 22:22:28,742 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 81 transitions, 339 flow [2024-11-10 22:22:28,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 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 22:22:28,742 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:22:28,742 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:22:28,755 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-10 22:22:28,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-10 22:22:28,943 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:22:28,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:22:28,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1344000086, now seen corresponding path program 1 times [2024-11-10 22:22:28,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:22:28,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368073293] [2024-11-10 22:22:28,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:28,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:22:28,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:29,007 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-10 22:22:29,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:22:29,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368073293] [2024-11-10 22:22:29,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368073293] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:22:29,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730409343] [2024-11-10 22:22:29,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:29,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:22:29,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:22:29,010 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:22:29,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-10 22:22:29,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:29,087 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-10 22:22:29,089 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:22:29,133 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-10 22:22:29,133 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:22:29,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730409343] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:22:29,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:22:29,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-10 22:22:29,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979235231] [2024-11-10 22:22:29,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:22:29,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:22:29,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:22:29,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:22:29,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:22:29,148 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 84 [2024-11-10 22:22:29,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 81 transitions, 339 flow. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 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 22:22:29,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:22:29,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 84 [2024-11-10 22:22:29,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:22:29,540 INFO L124 PetriNetUnfolderBase]: 2456/5237 cut-off events. [2024-11-10 22:22:29,541 INFO L125 PetriNetUnfolderBase]: For 4836/4865 co-relation queries the response was YES. [2024-11-10 22:22:29,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13537 conditions, 5237 events. 2456/5237 cut-off events. For 4836/4865 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 38199 event pairs, 1914 based on Foata normal form. 71/5147 useless extension candidates. Maximal degree in co-relation 13514. Up to 3685 conditions per place. [2024-11-10 22:22:29,561 INFO L140 encePairwiseOnDemand]: 80/84 looper letters, 84 selfloop transitions, 3 changer transitions 21/130 dead transitions. [2024-11-10 22:22:29,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 130 transitions, 789 flow [2024-11-10 22:22:29,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:22:29,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:22:29,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 223 transitions. [2024-11-10 22:22:29,562 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6636904761904762 [2024-11-10 22:22:29,562 INFO L175 Difference]: Start difference. First operand has 109 places, 81 transitions, 339 flow. Second operand 4 states and 223 transitions. [2024-11-10 22:22:29,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 130 transitions, 789 flow [2024-11-10 22:22:29,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 130 transitions, 764 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-10 22:22:29,576 INFO L231 Difference]: Finished difference. Result has 106 places, 73 transitions, 291 flow [2024-11-10 22:22:29,576 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=291, PETRI_PLACES=106, PETRI_TRANSITIONS=73} [2024-11-10 22:22:29,576 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 30 predicate places. [2024-11-10 22:22:29,576 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 73 transitions, 291 flow [2024-11-10 22:22:29,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 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 22:22:29,576 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:22:29,577 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:22:29,592 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-10 22:22:29,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-10 22:22:29,777 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:22:29,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:22:29,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1384911441, now seen corresponding path program 1 times [2024-11-10 22:22:29,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:22:29,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127837845] [2024-11-10 22:22:29,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:29,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:22:29,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:29,845 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-10 22:22:29,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:22:29,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127837845] [2024-11-10 22:22:29,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127837845] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:22:29,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356963742] [2024-11-10 22:22:29,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:29,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:22:29,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:22:29,849 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:22:29,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-10 22:22:29,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:29,926 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 22:22:29,927 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:22:29,990 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-10 22:22:29,990 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:22:29,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356963742] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:22:29,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:22:29,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2024-11-10 22:22:29,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866753483] [2024-11-10 22:22:29,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:22:29,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:22:29,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:22:29,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:22:29,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-10 22:22:30,015 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 84 [2024-11-10 22:22:30,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 73 transitions, 291 flow. Second operand has 6 states, 6 states have (on average 37.0) internal successors, (222), 6 states have internal predecessors, (222), 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 22:22:30,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:22:30,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 84 [2024-11-10 22:22:30,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:22:30,414 INFO L124 PetriNetUnfolderBase]: 2105/4506 cut-off events. [2024-11-10 22:22:30,414 INFO L125 PetriNetUnfolderBase]: For 4042/4070 co-relation queries the response was YES. [2024-11-10 22:22:30,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11248 conditions, 4506 events. 2105/4506 cut-off events. For 4042/4070 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 31942 event pairs, 756 based on Foata normal form. 106/4572 useless extension candidates. Maximal degree in co-relation 11226. Up to 1463 conditions per place. [2024-11-10 22:22:30,433 INFO L140 encePairwiseOnDemand]: 76/84 looper letters, 141 selfloop transitions, 9 changer transitions 0/170 dead transitions. [2024-11-10 22:22:30,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 170 transitions, 1057 flow [2024-11-10 22:22:30,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 22:22:30,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 22:22:30,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 341 transitions. [2024-11-10 22:22:30,434 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5799319727891157 [2024-11-10 22:22:30,434 INFO L175 Difference]: Start difference. First operand has 106 places, 73 transitions, 291 flow. Second operand 7 states and 341 transitions. [2024-11-10 22:22:30,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 170 transitions, 1057 flow [2024-11-10 22:22:30,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 170 transitions, 997 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-11-10 22:22:30,445 INFO L231 Difference]: Finished difference. Result has 102 places, 74 transitions, 299 flow [2024-11-10 22:22:30,445 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=299, PETRI_PLACES=102, PETRI_TRANSITIONS=74} [2024-11-10 22:22:30,445 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 26 predicate places. [2024-11-10 22:22:30,445 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 74 transitions, 299 flow [2024-11-10 22:22:30,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.0) internal successors, (222), 6 states have internal predecessors, (222), 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 22:22:30,445 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:22:30,446 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:22:30,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-10 22:22:30,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-10 22:22:30,646 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:22:30,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:22:30,647 INFO L85 PathProgramCache]: Analyzing trace with hash 936107937, now seen corresponding path program 1 times [2024-11-10 22:22:30,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:22:30,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473795833] [2024-11-10 22:22:30,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:30,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:22:30,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:30,695 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-10 22:22:30,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:22:30,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473795833] [2024-11-10 22:22:30,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473795833] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:22:30,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450047502] [2024-11-10 22:22:30,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:30,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:22:30,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:22:30,700 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:22:30,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-10 22:22:30,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:30,776 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-10 22:22:30,777 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:22:30,814 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-10 22:22:30,814 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:22:30,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450047502] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:22:30,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:22:30,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-10 22:22:30,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167185875] [2024-11-10 22:22:30,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:22:30,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:22:30,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:22:30,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:22:30,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:22:30,838 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 84 [2024-11-10 22:22:30,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 74 transitions, 299 flow. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 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 22:22:30,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:22:30,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 84 [2024-11-10 22:22:30,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:22:31,206 INFO L124 PetriNetUnfolderBase]: 1859/4213 cut-off events. [2024-11-10 22:22:31,206 INFO L125 PetriNetUnfolderBase]: For 3753/3775 co-relation queries the response was YES. [2024-11-10 22:22:31,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10560 conditions, 4213 events. 1859/4213 cut-off events. For 3753/3775 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 30760 event pairs, 1060 based on Foata normal form. 59/4180 useless extension candidates. Maximal degree in co-relation 10539. Up to 2004 conditions per place. [2024-11-10 22:22:31,220 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 118 selfloop transitions, 6 changer transitions 0/145 dead transitions. [2024-11-10 22:22:31,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 145 transitions, 858 flow [2024-11-10 22:22:31,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:22:31,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:22:31,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 260 transitions. [2024-11-10 22:22:31,221 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2024-11-10 22:22:31,221 INFO L175 Difference]: Start difference. First operand has 102 places, 74 transitions, 299 flow. Second operand 5 states and 260 transitions. [2024-11-10 22:22:31,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 145 transitions, 858 flow [2024-11-10 22:22:31,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 145 transitions, 843 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-10 22:22:31,234 INFO L231 Difference]: Finished difference. Result has 100 places, 73 transitions, 289 flow [2024-11-10 22:22:31,235 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=289, PETRI_PLACES=100, PETRI_TRANSITIONS=73} [2024-11-10 22:22:31,236 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 24 predicate places. [2024-11-10 22:22:31,236 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 73 transitions, 289 flow [2024-11-10 22:22:31,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:22:31,236 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:22:31,236 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:22:31,249 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-10 22:22:31,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:22:31,437 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:22:31,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:22:31,437 INFO L85 PathProgramCache]: Analyzing trace with hash 936106944, now seen corresponding path program 1 times [2024-11-10 22:22:31,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:22:31,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670588413] [2024-11-10 22:22:31,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:31,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:22:31,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:31,496 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-10 22:22:31,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:22:31,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670588413] [2024-11-10 22:22:31,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670588413] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:22:31,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280866853] [2024-11-10 22:22:31,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:31,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:22:31,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:22:31,498 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:22:31,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-10 22:22:31,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:31,572 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-10 22:22:31,573 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:22:31,622 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-10 22:22:31,623 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:22:31,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280866853] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:22:31,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:22:31,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-10 22:22:31,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643710256] [2024-11-10 22:22:31,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:22:31,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:22:31,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:22:31,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:22:31,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:22:31,663 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 84 [2024-11-10 22:22:31,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 73 transitions, 289 flow. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:22:31,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:22:31,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 84 [2024-11-10 22:22:31,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:22:32,055 INFO L124 PetriNetUnfolderBase]: 2269/4519 cut-off events. [2024-11-10 22:22:32,055 INFO L125 PetriNetUnfolderBase]: For 3699/3729 co-relation queries the response was YES. [2024-11-10 22:22:32,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11886 conditions, 4519 events. 2269/4519 cut-off events. For 3699/3729 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 30080 event pairs, 1212 based on Foata normal form. 108/4533 useless extension candidates. Maximal degree in co-relation 11866. Up to 2274 conditions per place. [2024-11-10 22:22:32,076 INFO L140 encePairwiseOnDemand]: 80/84 looper letters, 100 selfloop transitions, 3 changer transitions 2/123 dead transitions. [2024-11-10 22:22:32,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 123 transitions, 721 flow [2024-11-10 22:22:32,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:22:32,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:22:32,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 218 transitions. [2024-11-10 22:22:32,077 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6488095238095238 [2024-11-10 22:22:32,077 INFO L175 Difference]: Start difference. First operand has 100 places, 73 transitions, 289 flow. Second operand 4 states and 218 transitions. [2024-11-10 22:22:32,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 123 transitions, 721 flow [2024-11-10 22:22:32,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 123 transitions, 708 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 22:22:32,093 INFO L231 Difference]: Finished difference. Result has 99 places, 72 transitions, 280 flow [2024-11-10 22:22:32,093 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=280, PETRI_PLACES=99, PETRI_TRANSITIONS=72} [2024-11-10 22:22:32,094 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 23 predicate places. [2024-11-10 22:22:32,094 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 72 transitions, 280 flow [2024-11-10 22:22:32,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:22:32,094 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:22:32,094 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:22:32,109 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-10 22:22:32,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-10 22:22:32,298 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:22:32,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:22:32,298 INFO L85 PathProgramCache]: Analyzing trace with hash 569625961, now seen corresponding path program 1 times [2024-11-10 22:22:32,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:22:32,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99979123] [2024-11-10 22:22:32,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:32,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:22:32,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:32,343 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-10 22:22:32,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:22:32,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99979123] [2024-11-10 22:22:32,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99979123] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:22:32,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439161835] [2024-11-10 22:22:32,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:22:32,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:22:32,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:22:32,347 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:22:32,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-10 22:22:32,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:22:32,420 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-10 22:22:32,420 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:22:32,442 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-10 22:22:32,442 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:22:32,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439161835] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:22:32,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:22:32,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-10 22:22:32,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549359843] [2024-11-10 22:22:32,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:22:32,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:22:32,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:22:32,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:22:32,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:22:32,460 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 84 [2024-11-10 22:22:32,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 72 transitions, 280 flow. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 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) [2024-11-10 22:22:32,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:22:32,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 84 [2024-11-10 22:22:32,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:22:32,803 INFO L124 PetriNetUnfolderBase]: 1695/3621 cut-off events. [2024-11-10 22:22:32,804 INFO L125 PetriNetUnfolderBase]: For 2498/2508 co-relation queries the response was YES. [2024-11-10 22:22:32,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9316 conditions, 3621 events. 1695/3621 cut-off events. For 2498/2508 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 24503 event pairs, 1212 based on Foata normal form. 106/3627 useless extension candidates. Maximal degree in co-relation 9297. Up to 2274 conditions per place. [2024-11-10 22:22:32,812 INFO L140 encePairwiseOnDemand]: 81/84 looper letters, 0 selfloop transitions, 0 changer transitions 119/119 dead transitions. [2024-11-10 22:22:32,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 119 transitions, 686 flow [2024-11-10 22:22:32,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:22:32,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:22:32,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 216 transitions. [2024-11-10 22:22:32,813 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-11-10 22:22:32,814 INFO L175 Difference]: Start difference. First operand has 99 places, 72 transitions, 280 flow. Second operand 4 states and 216 transitions. [2024-11-10 22:22:32,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 119 transitions, 686 flow [2024-11-10 22:22:32,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 119 transitions, 678 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-10 22:22:32,823 INFO L231 Difference]: Finished difference. Result has 98 places, 0 transitions, 0 flow [2024-11-10 22:22:32,823 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=98, PETRI_TRANSITIONS=0} [2024-11-10 22:22:32,823 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 22 predicate places. [2024-11-10 22:22:32,823 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 0 transitions, 0 flow [2024-11-10 22:22:32,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 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) [2024-11-10 22:22:32,826 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 38 remaining) [2024-11-10 22:22:32,826 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 38 remaining) [2024-11-10 22:22:32,826 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 38 remaining) [2024-11-10 22:22:32,826 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 38 remaining) [2024-11-10 22:22:32,826 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 38 remaining) [2024-11-10 22:22:32,826 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 38 remaining) [2024-11-10 22:22:32,826 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 38 remaining) [2024-11-10 22:22:32,827 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 38 remaining) [2024-11-10 22:22:32,827 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 38 remaining) [2024-11-10 22:22:32,827 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 38 remaining) [2024-11-10 22:22:32,827 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 38 remaining) [2024-11-10 22:22:32,827 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 38 remaining) [2024-11-10 22:22:32,827 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 38 remaining) [2024-11-10 22:22:32,827 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 38 remaining) [2024-11-10 22:22:32,827 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 38 remaining) [2024-11-10 22:22:32,828 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 38 remaining) [2024-11-10 22:22:32,828 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 38 remaining) [2024-11-10 22:22:32,828 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 38 remaining) [2024-11-10 22:22:32,828 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 38 remaining) [2024-11-10 22:22:32,828 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 38 remaining) [2024-11-10 22:22:32,828 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 38 remaining) [2024-11-10 22:22:32,828 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 38 remaining) [2024-11-10 22:22:32,828 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 38 remaining) [2024-11-10 22:22:32,828 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 38 remaining) [2024-11-10 22:22:32,828 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 38 remaining) [2024-11-10 22:22:32,829 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 38 remaining) [2024-11-10 22:22:32,829 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 38 remaining) [2024-11-10 22:22:32,829 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 38 remaining) [2024-11-10 22:22:32,829 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 38 remaining) [2024-11-10 22:22:32,829 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 38 remaining) [2024-11-10 22:22:32,829 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 38 remaining) [2024-11-10 22:22:32,829 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 38 remaining) [2024-11-10 22:22:32,829 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 38 remaining) [2024-11-10 22:22:32,829 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 38 remaining) [2024-11-10 22:22:32,829 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 38 remaining) [2024-11-10 22:22:32,829 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 38 remaining) [2024-11-10 22:22:32,829 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 38 remaining) [2024-11-10 22:22:32,830 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 38 remaining) [2024-11-10 22:22:32,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-10 22:22:33,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:22:33,034 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 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] [2024-11-10 22:22:33,040 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-10 22:22:33,040 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-10 22:22:33,048 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 10:22:33 BasicIcfg [2024-11-10 22:22:33,048 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-10 22:22:33,048 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-10 22:22:33,048 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-10 22:22:33,049 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-10 22:22:33,049 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:22:12" (3/4) ... [2024-11-10 22:22:33,056 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-10 22:22:33,058 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-10 22:22:33,058 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-10 22:22:33,066 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 84 nodes and edges [2024-11-10 22:22:33,070 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 39 nodes and edges [2024-11-10 22:22:33,070 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2024-11-10 22:22:33,071 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-10 22:22:33,071 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-10 22:22:33,168 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-10 22:22:33,168 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-10 22:22:33,168 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-10 22:22:33,168 INFO L158 Benchmark]: Toolchain (without parser) took 22275.33ms. Allocated memory was 178.3MB in the beginning and 975.2MB in the end (delta: 796.9MB). Free memory was 121.9MB in the beginning and 843.3MB in the end (delta: -721.5MB). Peak memory consumption was 76.9MB. Max. memory is 16.1GB. [2024-11-10 22:22:33,168 INFO L158 Benchmark]: CDTParser took 0.82ms. Allocated memory is still 178.3MB. Free memory was 141.2MB in the beginning and 141.0MB in the end (delta: 243.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 22:22:33,169 INFO L158 Benchmark]: CACSL2BoogieTranslator took 287.46ms. Allocated memory is still 178.3MB. Free memory was 121.9MB in the beginning and 107.9MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-10 22:22:33,169 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.21ms. Allocated memory is still 178.3MB. Free memory was 107.9MB in the beginning and 105.1MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 22:22:33,169 INFO L158 Benchmark]: Boogie Preprocessor took 41.49ms. Allocated memory is still 178.3MB. Free memory was 105.1MB in the beginning and 102.3MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 22:22:33,169 INFO L158 Benchmark]: IcfgBuilder took 839.20ms. Allocated memory was 178.3MB in the beginning and 268.4MB in the end (delta: 90.2MB). Free memory was 102.3MB in the beginning and 222.3MB in the end (delta: -120.0MB). Peak memory consumption was 71.9MB. Max. memory is 16.1GB. [2024-11-10 22:22:33,169 INFO L158 Benchmark]: TraceAbstraction took 20918.71ms. Allocated memory was 268.4MB in the beginning and 975.2MB in the end (delta: 706.7MB). Free memory was 221.2MB in the beginning and 848.5MB in the end (delta: -627.3MB). Peak memory consumption was 474.8MB. Max. memory is 16.1GB. [2024-11-10 22:22:33,170 INFO L158 Benchmark]: Witness Printer took 119.46ms. Allocated memory is still 975.2MB. Free memory was 848.5MB in the beginning and 843.3MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-10 22:22:33,171 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.82ms. Allocated memory is still 178.3MB. Free memory was 141.2MB in the beginning and 141.0MB in the end (delta: 243.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 287.46ms. Allocated memory is still 178.3MB. Free memory was 121.9MB in the beginning and 107.9MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.21ms. Allocated memory is still 178.3MB. Free memory was 107.9MB in the beginning and 105.1MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.49ms. Allocated memory is still 178.3MB. Free memory was 105.1MB in the beginning and 102.3MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 839.20ms. Allocated memory was 178.3MB in the beginning and 268.4MB in the end (delta: 90.2MB). Free memory was 102.3MB in the beginning and 222.3MB in the end (delta: -120.0MB). Peak memory consumption was 71.9MB. Max. memory is 16.1GB. * TraceAbstraction took 20918.71ms. Allocated memory was 268.4MB in the beginning and 975.2MB in the end (delta: 706.7MB). Free memory was 221.2MB in the beginning and 848.5MB in the end (delta: -627.3MB). Peak memory consumption was 474.8MB. Max. memory is 16.1GB. * Witness Printer took 119.46ms. Allocated memory is still 975.2MB. Free memory was 848.5MB in the beginning and 843.3MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 130]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 130]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 81]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 81]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 130]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 130]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 123]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 123]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 129 locations, 38 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 20.8s, OverallIterations: 30, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 11.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1926 SdHoareTripleChecker+Valid, 3.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1652 mSDsluCounter, 199 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 119 mSDsCounter, 78 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5612 IncrementalHoareTripleChecker+Invalid, 5690 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 78 mSolverCounterUnsat, 80 mSDtfsCounter, 5612 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 806 GetRequests, 602 SyntacticMatches, 1 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=339occurred in iteration=25, InterpolantAutomatonStates: 151, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 1347 NumberOfCodeBlocks, 1331 NumberOfCodeBlocksAsserted, 52 NumberOfCheckSat, 1340 ConstructedInterpolants, 0 QuantifiedInterpolants, 3023 SizeOfPredicates, 37 NumberOfNonLiveVariables, 3444 ConjunctsInSsa, 90 ConjunctsInUnsatCore, 54 InterpolantComputations, 27 PerfectInterpolantSequences, 839/922 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 20 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-10 22:22:33,206 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE