./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-two-queue.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/popl20-two-queue.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 2b29a4c23931df07495caab7fd70ec22fec28fcea21b47e1c8eb19fb44a778d8 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 22:28:25,782 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 22:28:25,866 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-10 22:28:25,870 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 22:28:25,870 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 22:28:25,901 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 22:28:25,901 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 22:28:25,902 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 22:28:25,902 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 22:28:25,905 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 22:28:25,905 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 22:28:25,905 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 22:28:25,907 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 22:28:25,907 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 22:28:25,909 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 22:28:25,909 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 22:28:25,910 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 22:28:25,910 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 22:28:25,910 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 22:28:25,911 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 22:28:25,915 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 22:28:25,916 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 22:28:25,916 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 22:28:25,916 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 22:28:25,916 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 22:28:25,917 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-10 22:28:25,917 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 22:28:25,917 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 22:28:25,917 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 22:28:25,917 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 22:28:25,918 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 22:28:25,918 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 22:28:25,918 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 22:28:25,918 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 22:28:25,918 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:28:25,919 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 22:28:25,919 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 22:28:25,922 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 22:28:25,922 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 22:28:25,923 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 22:28:25,923 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 22:28:25,924 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 22:28:25,924 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 22:28:25,924 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 22:28:25,924 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b29a4c23931df07495caab7fd70ec22fec28fcea21b47e1c8eb19fb44a778d8 [2024-11-10 22:28:26,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 22:28:26,227 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 22:28:26,230 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 22:28:26,231 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 22:28:26,232 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 22:28:26,233 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-two-queue.wvr.c [2024-11-10 22:28:27,685 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 22:28:27,882 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 22:28:27,883 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-two-queue.wvr.c [2024-11-10 22:28:27,896 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6c25ee56/2d66e8f4d0594ed29d442c656770c77f/FLAG9bf31cb9f [2024-11-10 22:28:27,908 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6c25ee56/2d66e8f4d0594ed29d442c656770c77f [2024-11-10 22:28:27,910 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 22:28:27,911 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 22:28:27,912 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 22:28:27,912 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 22:28:27,916 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 22:28:27,917 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:28:27" (1/1) ... [2024-11-10 22:28:27,918 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e226fd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:27, skipping insertion in model container [2024-11-10 22:28:27,918 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:28:27" (1/1) ... [2024-11-10 22:28:27,940 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 22:28:28,179 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:28:28,195 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 22:28:28,226 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:28:28,243 INFO L204 MainTranslator]: Completed translation [2024-11-10 22:28:28,243 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:28 WrapperNode [2024-11-10 22:28:28,243 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 22:28:28,244 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 22:28:28,244 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 22:28:28,244 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 22:28:28,251 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:28" (1/1) ... [2024-11-10 22:28:28,261 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:28" (1/1) ... [2024-11-10 22:28:28,289 INFO L138 Inliner]: procedures = 23, calls = 34, calls flagged for inlining = 14, calls inlined = 16, statements flattened = 212 [2024-11-10 22:28:28,290 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 22:28:28,291 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 22:28:28,291 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 22:28:28,291 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 22:28:28,302 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:28" (1/1) ... [2024-11-10 22:28:28,303 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:28" (1/1) ... [2024-11-10 22:28:28,306 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:28" (1/1) ... [2024-11-10 22:28:28,334 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-10 22:28:28,335 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:28" (1/1) ... [2024-11-10 22:28:28,335 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:28" (1/1) ... [2024-11-10 22:28:28,342 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:28" (1/1) ... [2024-11-10 22:28:28,343 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:28" (1/1) ... [2024-11-10 22:28:28,345 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:28" (1/1) ... [2024-11-10 22:28:28,346 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:28" (1/1) ... [2024-11-10 22:28:28,352 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 22:28:28,353 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 22:28:28,353 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 22:28:28,354 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 22:28:28,355 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:28" (1/1) ... [2024-11-10 22:28:28,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:28:28,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:28,398 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 22:28:28,401 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 22:28:28,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 22:28:28,451 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 22:28:28,452 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 22:28:28,452 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 22:28:28,452 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 22:28:28,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 22:28:28,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 22:28:28,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 22:28:28,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 22:28:28,454 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-10 22:28:28,455 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-10 22:28:28,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 22:28:28,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 22:28:28,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 22:28:28,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 22:28:28,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 22:28:28,458 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 22:28:28,596 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 22:28:28,598 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 22:28:28,963 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 22:28:28,964 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 22:28:29,296 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 22:28:29,296 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 22:28:29,296 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:28:29 BoogieIcfgContainer [2024-11-10 22:28:29,297 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 22:28:29,300 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 22:28:29,301 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 22:28:29,305 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 22:28:29,305 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:28:27" (1/3) ... [2024-11-10 22:28:29,307 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@519c6b32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:28:29, skipping insertion in model container [2024-11-10 22:28:29,307 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:28" (2/3) ... [2024-11-10 22:28:29,307 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@519c6b32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:28:29, skipping insertion in model container [2024-11-10 22:28:29,307 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:28:29" (3/3) ... [2024-11-10 22:28:29,308 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-two-queue.wvr.c [2024-11-10 22:28:29,327 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 22:28:29,328 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2024-11-10 22:28:29,328 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 22:28:29,419 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-10 22:28:29,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 62 transitions, 138 flow [2024-11-10 22:28:29,521 INFO L124 PetriNetUnfolderBase]: 8/60 cut-off events. [2024-11-10 22:28:29,522 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 22:28:29,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 60 events. 8/60 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 147 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 40. Up to 2 conditions per place. [2024-11-10 22:28:29,527 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 62 transitions, 138 flow [2024-11-10 22:28:29,530 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 58 transitions, 125 flow [2024-11-10 22:28:29,539 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:28:29,548 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;@5eca0b8d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:28:29,549 INFO L334 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2024-11-10 22:28:29,553 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:28:29,553 INFO L124 PetriNetUnfolderBase]: 2/8 cut-off events. [2024-11-10 22:28:29,553 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:28:29,553 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:29,554 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 22:28:29,554 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-10 22:28:29,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:29,560 INFO L85 PathProgramCache]: Analyzing trace with hash 18316736, now seen corresponding path program 1 times [2024-11-10 22:28:29,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:29,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759138428] [2024-11-10 22:28:29,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:29,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:29,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:29,862 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 22:28:29,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:29,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759138428] [2024-11-10 22:28:29,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759138428] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:28:29,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:28:29,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:28:29,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664373039] [2024-11-10 22:28:29,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:28:29,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:28:29,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:29,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:28:29,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:28:29,925 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-11-10 22:28:29,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 58 transitions, 125 flow. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 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 22:28:29,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:29,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-11-10 22:28:29,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:30,138 INFO L124 PetriNetUnfolderBase]: 215/527 cut-off events. [2024-11-10 22:28:30,138 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-10 22:28:30,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 896 conditions, 527 events. 215/527 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2926 event pairs, 128 based on Foata normal form. 57/409 useless extension candidates. Maximal degree in co-relation 803. Up to 338 conditions per place. [2024-11-10 22:28:30,149 INFO L140 encePairwiseOnDemand]: 43/62 looper letters, 27 selfloop transitions, 7 changer transitions 0/56 dead transitions. [2024-11-10 22:28:30,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 56 transitions, 189 flow [2024-11-10 22:28:30,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:28:30,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:28:30,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 144 transitions. [2024-11-10 22:28:30,162 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5806451612903226 [2024-11-10 22:28:30,164 INFO L175 Difference]: Start difference. First operand has 57 places, 58 transitions, 125 flow. Second operand 4 states and 144 transitions. [2024-11-10 22:28:30,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 56 transitions, 189 flow [2024-11-10 22:28:30,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 56 transitions, 184 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:28:30,170 INFO L231 Difference]: Finished difference. Result has 56 places, 56 transitions, 164 flow [2024-11-10 22:28:30,172 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=164, PETRI_PLACES=56, PETRI_TRANSITIONS=56} [2024-11-10 22:28:30,175 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, -1 predicate places. [2024-11-10 22:28:30,175 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 56 transitions, 164 flow [2024-11-10 22:28:30,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 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 22:28:30,176 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:30,176 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-10 22:28:30,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 22:28:30,176 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-10 22:28:30,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:30,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1969838450, now seen corresponding path program 1 times [2024-11-10 22:28:30,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:30,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355661696] [2024-11-10 22:28:30,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:30,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:30,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:30,341 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 22:28:30,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:30,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355661696] [2024-11-10 22:28:30,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355661696] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:28:30,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525720339] [2024-11-10 22:28:30,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:30,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:30,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:30,346 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 22:28:30,348 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 22:28:30,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:30,435 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:28:30,439 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:28:30,493 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 22:28:30,494 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:28:30,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525720339] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:28:30,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:28:30,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-10 22:28:30,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756152898] [2024-11-10 22:28:30,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:28:30,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:28:30,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:30,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:28:30,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:28:30,544 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-11-10 22:28:30,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 56 transitions, 164 flow. Second operand has 6 states, 6 states have (on average 24.833333333333332) internal successors, (149), 6 states have internal predecessors, (149), 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 22:28:30,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:30,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-11-10 22:28:30,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:30,788 INFO L124 PetriNetUnfolderBase]: 215/525 cut-off events. [2024-11-10 22:28:30,788 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-11-10 22:28:30,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 907 conditions, 525 events. 215/525 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2950 event pairs, 128 based on Foata normal form. 2/352 useless extension candidates. Maximal degree in co-relation 853. Up to 328 conditions per place. [2024-11-10 22:28:30,794 INFO L140 encePairwiseOnDemand]: 53/62 looper letters, 20 selfloop transitions, 12 changer transitions 0/54 dead transitions. [2024-11-10 22:28:30,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 54 transitions, 220 flow [2024-11-10 22:28:30,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:28:30,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:28:30,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 178 transitions. [2024-11-10 22:28:30,799 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.478494623655914 [2024-11-10 22:28:30,800 INFO L175 Difference]: Start difference. First operand has 56 places, 56 transitions, 164 flow. Second operand 6 states and 178 transitions. [2024-11-10 22:28:30,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 54 transitions, 220 flow [2024-11-10 22:28:30,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 54 transitions, 220 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 22:28:30,803 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 180 flow [2024-11-10 22:28:30,803 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=180, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2024-11-10 22:28:30,804 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 2 predicate places. [2024-11-10 22:28:30,805 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 180 flow [2024-11-10 22:28:30,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.833333333333332) internal successors, (149), 6 states have internal predecessors, (149), 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 22:28:30,806 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:30,807 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-10 22:28:30,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-10 22:28:31,007 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 22:28:31,008 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-10 22:28:31,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:31,009 INFO L85 PathProgramCache]: Analyzing trace with hash -935449289, now seen corresponding path program 1 times [2024-11-10 22:28:31,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:31,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361974838] [2024-11-10 22:28:31,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:31,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:31,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:31,140 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 22:28:31,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:31,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361974838] [2024-11-10 22:28:31,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361974838] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:28:31,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208431911] [2024-11-10 22:28:31,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:31,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:31,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:31,144 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 22:28:31,145 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 22:28:31,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:31,225 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:28:31,226 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:28:31,262 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 22:28:31,262 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:28:31,312 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 22:28:31,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208431911] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:28:31,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:28:31,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-10 22:28:31,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045502479] [2024-11-10 22:28:31,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:28:31,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 22:28:31,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:31,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 22:28:31,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-10 22:28:31,370 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-11-10 22:28:31,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 180 flow. Second operand has 12 states, 12 states have (on average 25.083333333333332) internal successors, (301), 12 states have internal predecessors, (301), 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 22:28:31,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:31,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-11-10 22:28:31,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:31,602 INFO L124 PetriNetUnfolderBase]: 221/561 cut-off events. [2024-11-10 22:28:31,603 INFO L125 PetriNetUnfolderBase]: For 126/126 co-relation queries the response was YES. [2024-11-10 22:28:31,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1013 conditions, 561 events. 221/561 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3265 event pairs, 128 based on Foata normal form. 6/394 useless extension candidates. Maximal degree in co-relation 855. Up to 339 conditions per place. [2024-11-10 22:28:31,607 INFO L140 encePairwiseOnDemand]: 53/62 looper letters, 25 selfloop transitions, 25 changer transitions 0/72 dead transitions. [2024-11-10 22:28:31,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 72 transitions, 394 flow [2024-11-10 22:28:31,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 22:28:31,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 22:28:31,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 296 transitions. [2024-11-10 22:28:31,610 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4774193548387097 [2024-11-10 22:28:31,610 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 180 flow. Second operand 10 states and 296 transitions. [2024-11-10 22:28:31,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 72 transitions, 394 flow [2024-11-10 22:28:31,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 72 transitions, 336 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-10 22:28:31,614 INFO L231 Difference]: Finished difference. Result has 66 places, 72 transitions, 320 flow [2024-11-10 22:28:31,614 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=320, PETRI_PLACES=66, PETRI_TRANSITIONS=72} [2024-11-10 22:28:31,615 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 9 predicate places. [2024-11-10 22:28:31,615 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 72 transitions, 320 flow [2024-11-10 22:28:31,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 25.083333333333332) internal successors, (301), 12 states have internal predecessors, (301), 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 22:28:31,616 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:31,616 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:31,633 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 22:28:31,820 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 22:28:31,821 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-10 22:28:31,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:31,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1912405375, now seen corresponding path program 1 times [2024-11-10 22:28:31,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:31,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488284046] [2024-11-10 22:28:31,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:31,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:31,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:31,988 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 22:28:31,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:31,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488284046] [2024-11-10 22:28:31,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488284046] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:28:31,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:28:31,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:28:31,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499218262] [2024-11-10 22:28:31,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:28:31,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:28:31,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:31,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:28:31,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:28:31,997 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 62 [2024-11-10 22:28:31,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 72 transitions, 320 flow. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 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 22:28:31,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:31,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 62 [2024-11-10 22:28:31,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:32,152 INFO L124 PetriNetUnfolderBase]: 238/615 cut-off events. [2024-11-10 22:28:32,153 INFO L125 PetriNetUnfolderBase]: For 140/140 co-relation queries the response was YES. [2024-11-10 22:28:32,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1135 conditions, 615 events. 238/615 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3553 event pairs, 146 based on Foata normal form. 12/439 useless extension candidates. Maximal degree in co-relation 1062. Up to 359 conditions per place. [2024-11-10 22:28:32,158 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 50 selfloop transitions, 8 changer transitions 2/82 dead transitions. [2024-11-10 22:28:32,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 82 transitions, 464 flow [2024-11-10 22:28:32,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:28:32,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:28:32,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 173 transitions. [2024-11-10 22:28:32,159 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5580645161290323 [2024-11-10 22:28:32,159 INFO L175 Difference]: Start difference. First operand has 66 places, 72 transitions, 320 flow. Second operand 5 states and 173 transitions. [2024-11-10 22:28:32,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 82 transitions, 464 flow [2024-11-10 22:28:32,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 82 transitions, 440 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-10 22:28:32,166 INFO L231 Difference]: Finished difference. Result has 70 places, 73 transitions, 332 flow [2024-11-10 22:28:32,166 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=332, PETRI_PLACES=70, PETRI_TRANSITIONS=73} [2024-11-10 22:28:32,168 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 13 predicate places. [2024-11-10 22:28:32,168 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 73 transitions, 332 flow [2024-11-10 22:28:32,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 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 22:28:32,169 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:32,169 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:32,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 22:28:32,169 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-10 22:28:32,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:32,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1259647998, now seen corresponding path program 1 times [2024-11-10 22:28:32,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:32,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099006197] [2024-11-10 22:28:32,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:32,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:32,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:32,292 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 22:28:32,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:32,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099006197] [2024-11-10 22:28:32,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099006197] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:28:32,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:28:32,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:28:32,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523443022] [2024-11-10 22:28:32,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:28:32,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:28:32,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:32,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:28:32,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:28:32,303 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 62 [2024-11-10 22:28:32,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 73 transitions, 332 flow. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 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 22:28:32,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:32,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 62 [2024-11-10 22:28:32,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:32,460 INFO L124 PetriNetUnfolderBase]: 269/753 cut-off events. [2024-11-10 22:28:32,460 INFO L125 PetriNetUnfolderBase]: For 247/259 co-relation queries the response was YES. [2024-11-10 22:28:32,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1523 conditions, 753 events. 269/753 cut-off events. For 247/259 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4653 event pairs, 174 based on Foata normal form. 12/548 useless extension candidates. Maximal degree in co-relation 1416. Up to 405 conditions per place. [2024-11-10 22:28:32,465 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 69 selfloop transitions, 4 changer transitions 5/100 dead transitions. [2024-11-10 22:28:32,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 100 transitions, 624 flow [2024-11-10 22:28:32,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:28:32,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:28:32,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 177 transitions. [2024-11-10 22:28:32,466 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5709677419354838 [2024-11-10 22:28:32,467 INFO L175 Difference]: Start difference. First operand has 70 places, 73 transitions, 332 flow. Second operand 5 states and 177 transitions. [2024-11-10 22:28:32,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 100 transitions, 624 flow [2024-11-10 22:28:32,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 100 transitions, 617 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:28:32,472 INFO L231 Difference]: Finished difference. Result has 75 places, 74 transitions, 350 flow [2024-11-10 22:28:32,472 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=350, PETRI_PLACES=75, PETRI_TRANSITIONS=74} [2024-11-10 22:28:32,473 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 18 predicate places. [2024-11-10 22:28:32,473 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 74 transitions, 350 flow [2024-11-10 22:28:32,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 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 22:28:32,473 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:32,474 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:32,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 22:28:32,474 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-10 22:28:32,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:32,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1511750168, now seen corresponding path program 1 times [2024-11-10 22:28:32,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:32,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559336978] [2024-11-10 22:28:32,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:32,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:32,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:32,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:32,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:32,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559336978] [2024-11-10 22:28:32,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559336978] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:28:32,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918841695] [2024-11-10 22:28:32,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:32,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:32,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:32,602 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 22:28:32,603 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 22:28:32,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:32,680 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:28:32,681 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:28:32,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:28:32,710 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:28:32,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918841695] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:28:32,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:28:32,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2024-11-10 22:28:32,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895373388] [2024-11-10 22:28:32,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:28:32,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:28:32,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:32,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:28:32,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-10 22:28:32,712 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 62 [2024-11-10 22:28:32,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 74 transitions, 350 flow. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 22:28:32,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:32,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 62 [2024-11-10 22:28:32,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:32,799 INFO L124 PetriNetUnfolderBase]: 204/635 cut-off events. [2024-11-10 22:28:32,800 INFO L125 PetriNetUnfolderBase]: For 299/327 co-relation queries the response was YES. [2024-11-10 22:28:32,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1322 conditions, 635 events. 204/635 cut-off events. For 299/327 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3841 event pairs, 132 based on Foata normal form. 0/485 useless extension candidates. Maximal degree in co-relation 1215. Up to 382 conditions per place. [2024-11-10 22:28:32,804 INFO L140 encePairwiseOnDemand]: 59/62 looper letters, 45 selfloop transitions, 1 changer transitions 0/72 dead transitions. [2024-11-10 22:28:32,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 72 transitions, 434 flow [2024-11-10 22:28:32,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:28:32,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:28:32,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 108 transitions. [2024-11-10 22:28:32,806 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5806451612903226 [2024-11-10 22:28:32,806 INFO L175 Difference]: Start difference. First operand has 75 places, 74 transitions, 350 flow. Second operand 3 states and 108 transitions. [2024-11-10 22:28:32,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 72 transitions, 434 flow [2024-11-10 22:28:32,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 72 transitions, 422 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-10 22:28:32,809 INFO L231 Difference]: Finished difference. Result has 73 places, 72 transitions, 332 flow [2024-11-10 22:28:32,810 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=332, PETRI_PLACES=73, PETRI_TRANSITIONS=72} [2024-11-10 22:28:32,810 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 16 predicate places. [2024-11-10 22:28:32,811 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 72 transitions, 332 flow [2024-11-10 22:28:32,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 22:28:32,811 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:32,811 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:32,829 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 22:28:33,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:33,012 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-10 22:28:33,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:33,012 INFO L85 PathProgramCache]: Analyzing trace with hash 933251920, now seen corresponding path program 1 times [2024-11-10 22:28:33,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:33,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438225030] [2024-11-10 22:28:33,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:33,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:33,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:33,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:33,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:33,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438225030] [2024-11-10 22:28:33,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438225030] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:28:33,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379952353] [2024-11-10 22:28:33,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:33,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:33,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:33,172 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 22:28:33,173 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 22:28:33,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:33,245 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:28:33,246 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:28:33,276 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:28:33,276 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:28:33,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379952353] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:28:33,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:28:33,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-10 22:28:33,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164124633] [2024-11-10 22:28:33,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:28:33,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:28:33,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:33,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:28:33,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-10 22:28:33,278 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 62 [2024-11-10 22:28:33,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 72 transitions, 332 flow. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 22:28:33,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:33,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 62 [2024-11-10 22:28:33,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:33,357 INFO L124 PetriNetUnfolderBase]: 150/523 cut-off events. [2024-11-10 22:28:33,358 INFO L125 PetriNetUnfolderBase]: For 270/282 co-relation queries the response was YES. [2024-11-10 22:28:33,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1065 conditions, 523 events. 150/523 cut-off events. For 270/282 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3051 event pairs, 96 based on Foata normal form. 0/426 useless extension candidates. Maximal degree in co-relation 1048. Up to 298 conditions per place. [2024-11-10 22:28:33,361 INFO L140 encePairwiseOnDemand]: 59/62 looper letters, 42 selfloop transitions, 1 changer transitions 2/70 dead transitions. [2024-11-10 22:28:33,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 70 transitions, 412 flow [2024-11-10 22:28:33,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:28:33,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:28:33,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2024-11-10 22:28:33,364 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5698924731182796 [2024-11-10 22:28:33,364 INFO L175 Difference]: Start difference. First operand has 73 places, 72 transitions, 332 flow. Second operand 3 states and 106 transitions. [2024-11-10 22:28:33,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 70 transitions, 412 flow [2024-11-10 22:28:33,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 70 transitions, 411 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:28:33,368 INFO L231 Difference]: Finished difference. Result has 72 places, 68 transitions, 313 flow [2024-11-10 22:28:33,368 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=313, PETRI_PLACES=72, PETRI_TRANSITIONS=68} [2024-11-10 22:28:33,369 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 15 predicate places. [2024-11-10 22:28:33,371 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 68 transitions, 313 flow [2024-11-10 22:28:33,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 22:28:33,371 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:33,372 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1] [2024-11-10 22:28:33,388 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 22:28:33,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:33,572 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-10 22:28:33,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:33,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1048529421, now seen corresponding path program 2 times [2024-11-10 22:28:33,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:33,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165216662] [2024-11-10 22:28:33,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:33,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:33,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:33,722 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:33,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:33,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165216662] [2024-11-10 22:28:33,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165216662] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:28:33,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911353893] [2024-11-10 22:28:33,724 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:28:33,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:33,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:33,728 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 22:28:33,731 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 22:28:33,801 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 22:28:33,801 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:28:33,802 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 22:28:33,804 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:28:33,856 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 22:28:33,857 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:28:33,901 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 22:28:33,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911353893] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:28:33,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:28:33,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-10 22:28:33,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273057075] [2024-11-10 22:28:33,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:28:33,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-10 22:28:33,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:33,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-10 22:28:33,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-10 22:28:33,947 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 62 [2024-11-10 22:28:33,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 68 transitions, 313 flow. Second operand has 14 states, 14 states have (on average 23.142857142857142) internal successors, (324), 14 states have internal predecessors, (324), 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 22:28:33,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:33,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 62 [2024-11-10 22:28:33,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:34,292 INFO L124 PetriNetUnfolderBase]: 132/458 cut-off events. [2024-11-10 22:28:34,292 INFO L125 PetriNetUnfolderBase]: For 319/331 co-relation queries the response was YES. [2024-11-10 22:28:34,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 967 conditions, 458 events. 132/458 cut-off events. For 319/331 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2496 event pairs, 75 based on Foata normal form. 4/386 useless extension candidates. Maximal degree in co-relation 949. Up to 219 conditions per place. [2024-11-10 22:28:34,295 INFO L140 encePairwiseOnDemand]: 52/62 looper letters, 24 selfloop transitions, 37 changer transitions 0/81 dead transitions. [2024-11-10 22:28:34,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 81 transitions, 497 flow [2024-11-10 22:28:34,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-10 22:28:34,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-10 22:28:34,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 592 transitions. [2024-11-10 22:28:34,297 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-11-10 22:28:34,297 INFO L175 Difference]: Start difference. First operand has 72 places, 68 transitions, 313 flow. Second operand 24 states and 592 transitions. [2024-11-10 22:28:34,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 81 transitions, 497 flow [2024-11-10 22:28:34,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 81 transitions, 496 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:28:34,300 INFO L231 Difference]: Finished difference. Result has 94 places, 77 transitions, 452 flow [2024-11-10 22:28:34,300 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=452, PETRI_PLACES=94, PETRI_TRANSITIONS=77} [2024-11-10 22:28:34,301 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 37 predicate places. [2024-11-10 22:28:34,301 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 77 transitions, 452 flow [2024-11-10 22:28:34,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 23.142857142857142) internal successors, (324), 14 states have internal predecessors, (324), 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 22:28:34,301 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:34,301 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:34,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-10 22:28:34,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:34,502 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-10 22:28:34,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:34,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1707414105, now seen corresponding path program 1 times [2024-11-10 22:28:34,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:34,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324668414] [2024-11-10 22:28:34,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:34,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:34,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:34,553 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 22:28:34,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:34,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324668414] [2024-11-10 22:28:34,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324668414] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:28:34,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:28:34,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:28:34,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076788936] [2024-11-10 22:28:34,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:28:34,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:28:34,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:34,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:28:34,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:28:34,554 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 62 [2024-11-10 22:28:34,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 77 transitions, 452 flow. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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 22:28:34,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:34,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 62 [2024-11-10 22:28:34,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:34,652 INFO L124 PetriNetUnfolderBase]: 122/435 cut-off events. [2024-11-10 22:28:34,652 INFO L125 PetriNetUnfolderBase]: For 485/489 co-relation queries the response was YES. [2024-11-10 22:28:34,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 989 conditions, 435 events. 122/435 cut-off events. For 485/489 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2283 event pairs, 40 based on Foata normal form. 6/373 useless extension candidates. Maximal degree in co-relation 967. Up to 124 conditions per place. [2024-11-10 22:28:34,654 INFO L140 encePairwiseOnDemand]: 59/62 looper letters, 52 selfloop transitions, 2 changer transitions 1/83 dead transitions. [2024-11-10 22:28:34,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 83 transitions, 579 flow [2024-11-10 22:28:34,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:28:34,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:28:34,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 111 transitions. [2024-11-10 22:28:34,655 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5967741935483871 [2024-11-10 22:28:34,656 INFO L175 Difference]: Start difference. First operand has 94 places, 77 transitions, 452 flow. Second operand 3 states and 111 transitions. [2024-11-10 22:28:34,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 83 transitions, 579 flow [2024-11-10 22:28:34,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 83 transitions, 493 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-11-10 22:28:34,661 INFO L231 Difference]: Finished difference. Result has 87 places, 78 transitions, 380 flow [2024-11-10 22:28:34,661 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=380, PETRI_PLACES=87, PETRI_TRANSITIONS=78} [2024-11-10 22:28:34,662 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 30 predicate places. [2024-11-10 22:28:34,663 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 78 transitions, 380 flow [2024-11-10 22:28:34,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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 22:28:34,664 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:34,664 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:34,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-10 22:28:34,664 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-10 22:28:34,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:34,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1809107017, now seen corresponding path program 1 times [2024-11-10 22:28:34,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:34,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933908696] [2024-11-10 22:28:34,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:34,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:34,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:34,725 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 22:28:34,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:34,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933908696] [2024-11-10 22:28:34,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933908696] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:28:34,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:28:34,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:28:34,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838305629] [2024-11-10 22:28:34,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:28:34,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:28:34,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:34,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:28:34,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:28:34,726 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 62 [2024-11-10 22:28:34,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 78 transitions, 380 flow. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 22:28:34,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:34,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 62 [2024-11-10 22:28:34,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:34,796 INFO L124 PetriNetUnfolderBase]: 104/371 cut-off events. [2024-11-10 22:28:34,797 INFO L125 PetriNetUnfolderBase]: For 332/340 co-relation queries the response was YES. [2024-11-10 22:28:34,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 868 conditions, 371 events. 104/371 cut-off events. For 332/340 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1723 event pairs, 42 based on Foata normal form. 5/323 useless extension candidates. Maximal degree in co-relation 845. Up to 117 conditions per place. [2024-11-10 22:28:34,799 INFO L140 encePairwiseOnDemand]: 59/62 looper letters, 53 selfloop transitions, 2 changer transitions 3/86 dead transitions. [2024-11-10 22:28:34,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 86 transitions, 522 flow [2024-11-10 22:28:34,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:28:34,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:28:34,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2024-11-10 22:28:34,800 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6075268817204301 [2024-11-10 22:28:34,800 INFO L175 Difference]: Start difference. First operand has 87 places, 78 transitions, 380 flow. Second operand 3 states and 113 transitions. [2024-11-10 22:28:34,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 86 transitions, 522 flow [2024-11-10 22:28:34,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 86 transitions, 515 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-10 22:28:34,804 INFO L231 Difference]: Finished difference. Result has 89 places, 79 transitions, 388 flow [2024-11-10 22:28:34,805 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=388, PETRI_PLACES=89, PETRI_TRANSITIONS=79} [2024-11-10 22:28:34,806 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 32 predicate places. [2024-11-10 22:28:34,806 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 79 transitions, 388 flow [2024-11-10 22:28:34,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 22:28:34,807 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:34,807 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 5, 1, 1, 1, 1, 1] [2024-11-10 22:28:34,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-10 22:28:34,807 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-10 22:28:34,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:34,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1691181257, now seen corresponding path program 1 times [2024-11-10 22:28:34,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:34,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558523090] [2024-11-10 22:28:34,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:34,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:34,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:35,023 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:35,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:35,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558523090] [2024-11-10 22:28:35,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558523090] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:28:35,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031907127] [2024-11-10 22:28:35,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:35,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:35,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:35,026 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 22:28:35,027 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 22:28:35,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:35,117 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-10 22:28:35,119 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:28:35,176 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:35,176 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:28:35,391 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:35,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031907127] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:28:35,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:28:35,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2024-11-10 22:28:35,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623521887] [2024-11-10 22:28:35,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:28:35,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-10 22:28:35,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:35,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-10 22:28:35,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2024-11-10 22:28:35,524 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-11-10 22:28:35,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 79 transitions, 388 flow. Second operand has 28 states, 28 states have (on average 25.071428571428573) internal successors, (702), 28 states have internal predecessors, (702), 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 22:28:35,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:35,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-11-10 22:28:35,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:35,919 INFO L124 PetriNetUnfolderBase]: 125/505 cut-off events. [2024-11-10 22:28:35,919 INFO L125 PetriNetUnfolderBase]: For 972/976 co-relation queries the response was YES. [2024-11-10 22:28:35,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1272 conditions, 505 events. 125/505 cut-off events. For 972/976 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2355 event pairs, 72 based on Foata normal form. 14/461 useless extension candidates. Maximal degree in co-relation 1247. Up to 206 conditions per place. [2024-11-10 22:28:35,922 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 22 selfloop transitions, 72 changer transitions 0/121 dead transitions. [2024-11-10 22:28:35,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 121 transitions, 877 flow [2024-11-10 22:28:35,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-10 22:28:35,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-10 22:28:35,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 723 transitions. [2024-11-10 22:28:35,925 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4485111662531017 [2024-11-10 22:28:35,925 INFO L175 Difference]: Start difference. First operand has 89 places, 79 transitions, 388 flow. Second operand 26 states and 723 transitions. [2024-11-10 22:28:35,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 121 transitions, 877 flow [2024-11-10 22:28:35,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 121 transitions, 869 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-10 22:28:35,930 INFO L231 Difference]: Finished difference. Result has 119 places, 121 transitions, 877 flow [2024-11-10 22:28:35,931 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=877, PETRI_PLACES=119, PETRI_TRANSITIONS=121} [2024-11-10 22:28:35,931 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 62 predicate places. [2024-11-10 22:28:35,931 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 121 transitions, 877 flow [2024-11-10 22:28:35,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 25.071428571428573) internal successors, (702), 28 states have internal predecessors, (702), 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 22:28:35,932 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:35,932 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:35,950 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 22:28:36,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:36,133 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-10 22:28:36,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:36,133 INFO L85 PathProgramCache]: Analyzing trace with hash -338406958, now seen corresponding path program 1 times [2024-11-10 22:28:36,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:36,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544191391] [2024-11-10 22:28:36,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:36,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:36,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:36,666 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:28:36,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:36,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544191391] [2024-11-10 22:28:36,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544191391] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:28:36,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616710681] [2024-11-10 22:28:36,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:36,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:36,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:36,669 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 22:28:36,670 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 22:28:36,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:36,772 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-10 22:28:36,774 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:28:36,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-10 22:28:37,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-10 22:28:37,281 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:28:37,282 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:28:37,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-10 22:28:37,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2024-11-10 22:28:37,769 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:28:37,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616710681] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:28:37,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:28:37,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-10 22:28:37,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625118129] [2024-11-10 22:28:37,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:28:37,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-10 22:28:37,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:37,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-10 22:28:37,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=517, Unknown=0, NotChecked=0, Total=600 [2024-11-10 22:28:37,977 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-10 22:28:37,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 121 transitions, 877 flow. Second operand has 25 states, 25 states have (on average 19.8) internal successors, (495), 25 states have internal predecessors, (495), 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 22:28:37,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:37,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-10 22:28:37,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:39,679 INFO L124 PetriNetUnfolderBase]: 494/1291 cut-off events. [2024-11-10 22:28:39,680 INFO L125 PetriNetUnfolderBase]: For 1448/1460 co-relation queries the response was YES. [2024-11-10 22:28:39,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3097 conditions, 1291 events. 494/1291 cut-off events. For 1448/1460 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 7919 event pairs, 107 based on Foata normal form. 0/1126 useless extension candidates. Maximal degree in co-relation 3065. Up to 246 conditions per place. [2024-11-10 22:28:39,689 INFO L140 encePairwiseOnDemand]: 47/62 looper letters, 122 selfloop transitions, 86 changer transitions 7/231 dead transitions. [2024-11-10 22:28:39,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 231 transitions, 1624 flow [2024-11-10 22:28:39,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-10 22:28:39,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-10 22:28:39,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 562 transitions. [2024-11-10 22:28:39,692 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.394109396914446 [2024-11-10 22:28:39,692 INFO L175 Difference]: Start difference. First operand has 119 places, 121 transitions, 877 flow. Second operand 23 states and 562 transitions. [2024-11-10 22:28:39,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 231 transitions, 1624 flow [2024-11-10 22:28:39,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 231 transitions, 1434 flow, removed 54 selfloop flow, removed 13 redundant places. [2024-11-10 22:28:39,703 INFO L231 Difference]: Finished difference. Result has 134 places, 137 transitions, 945 flow [2024-11-10 22:28:39,706 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=687, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=945, PETRI_PLACES=134, PETRI_TRANSITIONS=137} [2024-11-10 22:28:39,706 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 77 predicate places. [2024-11-10 22:28:39,707 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 137 transitions, 945 flow [2024-11-10 22:28:39,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 19.8) internal successors, (495), 25 states have internal predecessors, (495), 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 22:28:39,708 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:39,709 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:39,722 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-10 22:28:39,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:39,911 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-10 22:28:39,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:39,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1390279277, now seen corresponding path program 1 times [2024-11-10 22:28:39,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:39,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108117667] [2024-11-10 22:28:39,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:39,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:39,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:40,539 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:28:40,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:40,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108117667] [2024-11-10 22:28:40,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108117667] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:28:40,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044656272] [2024-11-10 22:28:40,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:40,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:40,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:40,541 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 22:28:40,542 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 22:28:40,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:40,623 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-10 22:28:40,625 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:28:40,747 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2024-11-10 22:28:40,775 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 22:28:40,776 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:28:40,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044656272] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:28:40,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:28:40,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 12 [2024-11-10 22:28:40,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934654854] [2024-11-10 22:28:40,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:28:40,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:28:40,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:40,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:28:40,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2024-11-10 22:28:40,806 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 62 [2024-11-10 22:28:40,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 137 transitions, 945 flow. Second operand has 6 states, 6 states have (on average 27.5) internal successors, (165), 6 states have internal predecessors, (165), 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 22:28:40,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:40,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 62 [2024-11-10 22:28:40,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:41,142 INFO L124 PetriNetUnfolderBase]: 720/1834 cut-off events. [2024-11-10 22:28:41,142 INFO L125 PetriNetUnfolderBase]: For 2233/2249 co-relation queries the response was YES. [2024-11-10 22:28:41,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4649 conditions, 1834 events. 720/1834 cut-off events. For 2233/2249 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 12290 event pairs, 104 based on Foata normal form. 30/1644 useless extension candidates. Maximal degree in co-relation 4613. Up to 502 conditions per place. [2024-11-10 22:28:41,158 INFO L140 encePairwiseOnDemand]: 55/62 looper letters, 155 selfloop transitions, 7 changer transitions 5/198 dead transitions. [2024-11-10 22:28:41,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 198 transitions, 1563 flow [2024-11-10 22:28:41,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 22:28:41,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 22:28:41,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 236 transitions. [2024-11-10 22:28:41,160 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.543778801843318 [2024-11-10 22:28:41,161 INFO L175 Difference]: Start difference. First operand has 134 places, 137 transitions, 945 flow. Second operand 7 states and 236 transitions. [2024-11-10 22:28:41,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 198 transitions, 1563 flow [2024-11-10 22:28:41,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 198 transitions, 1523 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-11-10 22:28:41,172 INFO L231 Difference]: Finished difference. Result has 138 places, 142 transitions, 964 flow [2024-11-10 22:28:41,172 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=917, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=964, PETRI_PLACES=138, PETRI_TRANSITIONS=142} [2024-11-10 22:28:41,173 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 81 predicate places. [2024-11-10 22:28:41,173 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 142 transitions, 964 flow [2024-11-10 22:28:41,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.5) internal successors, (165), 6 states have internal predecessors, (165), 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 22:28:41,173 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:41,174 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:41,191 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 22:28:41,377 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,SelfDestructingSolverStorable12 [2024-11-10 22:28:41,378 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-10 22:28:41,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:41,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1901203856, now seen corresponding path program 1 times [2024-11-10 22:28:41,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:41,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167337427] [2024-11-10 22:28:41,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:41,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:41,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:41,769 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:28:41,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:41,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167337427] [2024-11-10 22:28:41,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167337427] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:28:41,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624524195] [2024-11-10 22:28:41,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:41,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:41,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:41,771 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 22:28:41,773 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 22:28:41,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:41,858 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-10 22:28:41,860 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:28:41,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-10 22:28:41,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-10 22:28:42,024 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-10 22:28:42,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-10 22:28:42,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-10 22:28:42,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-10 22:28:42,215 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 22:28:42,215 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:28:42,820 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 22:28:42,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 42 [2024-11-10 22:28:42,832 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 22:28:42,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 54 [2024-11-10 22:28:42,843 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 22:28:42,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 34 [2024-11-10 22:28:42,980 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 22:28:42,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624524195] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:28:42,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:28:42,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 26 [2024-11-10 22:28:42,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703879867] [2024-11-10 22:28:42,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:28:42,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-10 22:28:42,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:42,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-10 22:28:42,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=619, Unknown=1, NotChecked=0, Total=756 [2024-11-10 22:28:43,376 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 62 [2024-11-10 22:28:43,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 142 transitions, 964 flow. Second operand has 28 states, 28 states have (on average 13.357142857142858) internal successors, (374), 28 states have internal predecessors, (374), 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 22:28:43,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:43,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 62 [2024-11-10 22:28:43,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:48,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 22:28:49,758 INFO L124 PetriNetUnfolderBase]: 2754/5497 cut-off events. [2024-11-10 22:28:49,758 INFO L125 PetriNetUnfolderBase]: For 5579/5581 co-relation queries the response was YES. [2024-11-10 22:28:49,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15191 conditions, 5497 events. 2754/5497 cut-off events. For 5579/5581 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 39120 event pairs, 670 based on Foata normal form. 56/4966 useless extension candidates. Maximal degree in co-relation 15151. Up to 2164 conditions per place. [2024-11-10 22:28:49,806 INFO L140 encePairwiseOnDemand]: 47/62 looper letters, 257 selfloop transitions, 108 changer transitions 19/396 dead transitions. [2024-11-10 22:28:49,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 396 transitions, 2961 flow [2024-11-10 22:28:49,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-10 22:28:49,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-10 22:28:49,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 531 transitions. [2024-11-10 22:28:49,810 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2953281423804227 [2024-11-10 22:28:49,810 INFO L175 Difference]: Start difference. First operand has 138 places, 142 transitions, 964 flow. Second operand 29 states and 531 transitions. [2024-11-10 22:28:49,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 396 transitions, 2961 flow [2024-11-10 22:28:49,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 396 transitions, 2957 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:28:49,842 INFO L231 Difference]: Finished difference. Result has 178 places, 219 transitions, 2000 flow [2024-11-10 22:28:49,843 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=962, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=2000, PETRI_PLACES=178, PETRI_TRANSITIONS=219} [2024-11-10 22:28:49,843 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 121 predicate places. [2024-11-10 22:28:49,843 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 219 transitions, 2000 flow [2024-11-10 22:28:49,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 13.357142857142858) internal successors, (374), 28 states have internal predecessors, (374), 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 22:28:49,844 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:49,844 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:49,861 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 22:28:50,048 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,SelfDestructingSolverStorable13 [2024-11-10 22:28:50,049 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-10 22:28:50,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:50,049 INFO L85 PathProgramCache]: Analyzing trace with hash -321487194, now seen corresponding path program 1 times [2024-11-10 22:28:50,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:50,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590361880] [2024-11-10 22:28:50,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:50,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:50,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:50,456 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:28:50,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:50,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590361880] [2024-11-10 22:28:50,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590361880] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:28:50,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911590846] [2024-11-10 22:28:50,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:50,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:50,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:50,458 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 22:28:50,460 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 22:28:50,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:50,546 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-10 22:28:50,547 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:28:50,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2024-11-10 22:28:50,688 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 22:28:50,688 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:28:50,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911590846] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:28:50,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:28:50,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 13 [2024-11-10 22:28:50,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589861129] [2024-11-10 22:28:50,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:28:50,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:28:50,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:50,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:28:50,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-10 22:28:50,731 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 62 [2024-11-10 22:28:50,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 219 transitions, 2000 flow. Second operand has 6 states, 6 states have (on average 27.5) internal successors, (165), 6 states have internal predecessors, (165), 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 22:28:50,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:50,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 62 [2024-11-10 22:28:50,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:51,564 INFO L124 PetriNetUnfolderBase]: 1606/3929 cut-off events. [2024-11-10 22:28:51,565 INFO L125 PetriNetUnfolderBase]: For 12194/12330 co-relation queries the response was YES. [2024-11-10 22:28:51,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12954 conditions, 3929 events. 1606/3929 cut-off events. For 12194/12330 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 31279 event pairs, 181 based on Foata normal form. 120/3739 useless extension candidates. Maximal degree in co-relation 12900. Up to 1372 conditions per place. [2024-11-10 22:28:51,602 INFO L140 encePairwiseOnDemand]: 55/62 looper letters, 216 selfloop transitions, 36 changer transitions 4/290 dead transitions. [2024-11-10 22:28:51,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 290 transitions, 2993 flow [2024-11-10 22:28:51,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 22:28:51,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 22:28:51,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 237 transitions. [2024-11-10 22:28:51,604 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5460829493087558 [2024-11-10 22:28:51,604 INFO L175 Difference]: Start difference. First operand has 178 places, 219 transitions, 2000 flow. Second operand 7 states and 237 transitions. [2024-11-10 22:28:51,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 290 transitions, 2993 flow [2024-11-10 22:28:51,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 290 transitions, 2941 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-11-10 22:28:51,666 INFO L231 Difference]: Finished difference. Result has 181 places, 227 transitions, 2185 flow [2024-11-10 22:28:51,667 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1947, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2185, PETRI_PLACES=181, PETRI_TRANSITIONS=227} [2024-11-10 22:28:51,668 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 124 predicate places. [2024-11-10 22:28:51,668 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 227 transitions, 2185 flow [2024-11-10 22:28:51,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.5) internal successors, (165), 6 states have internal predecessors, (165), 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 22:28:51,670 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:51,670 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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 22:28:51,689 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 22:28:51,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-10 22:28:51,871 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-10 22:28:51,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:51,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1744976493, now seen corresponding path program 1 times [2024-11-10 22:28:51,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:51,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298158520] [2024-11-10 22:28:51,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:51,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:51,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:52,088 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:28:52,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:52,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298158520] [2024-11-10 22:28:52,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298158520] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:28:52,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538376985] [2024-11-10 22:28:52,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:52,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:52,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:52,091 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 22:28:52,093 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 22:28:52,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:52,181 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-10 22:28:52,182 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:28:52,309 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:28:52,309 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:28:52,466 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:28:52,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538376985] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:28:52,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:28:52,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-10 22:28:52,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498233928] [2024-11-10 22:28:52,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:28:52,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-10 22:28:52,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:52,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-10 22:28:52,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-10 22:28:52,548 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 62 [2024-11-10 22:28:52,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 227 transitions, 2185 flow. Second operand has 15 states, 15 states have (on average 24.266666666666666) internal successors, (364), 15 states have internal predecessors, (364), 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 22:28:52,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:52,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 62 [2024-11-10 22:28:52,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:53,203 INFO L124 PetriNetUnfolderBase]: 862/2663 cut-off events. [2024-11-10 22:28:53,203 INFO L125 PetriNetUnfolderBase]: For 11718/11789 co-relation queries the response was YES. [2024-11-10 22:28:53,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9516 conditions, 2663 events. 862/2663 cut-off events. For 11718/11789 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 21598 event pairs, 500 based on Foata normal form. 48/2418 useless extension candidates. Maximal degree in co-relation 9458. Up to 1097 conditions per place. [2024-11-10 22:28:53,230 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 112 selfloop transitions, 95 changer transitions 3/243 dead transitions. [2024-11-10 22:28:53,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 243 transitions, 2649 flow [2024-11-10 22:28:53,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 22:28:53,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-10 22:28:53,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 248 transitions. [2024-11-10 22:28:53,232 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-11-10 22:28:53,232 INFO L175 Difference]: Start difference. First operand has 181 places, 227 transitions, 2185 flow. Second operand 9 states and 248 transitions. [2024-11-10 22:28:53,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 243 transitions, 2649 flow [2024-11-10 22:28:53,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 243 transitions, 2623 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-11-10 22:28:53,343 INFO L231 Difference]: Finished difference. Result has 187 places, 218 transitions, 2262 flow [2024-11-10 22:28:53,344 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2069, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2262, PETRI_PLACES=187, PETRI_TRANSITIONS=218} [2024-11-10 22:28:53,344 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 130 predicate places. [2024-11-10 22:28:53,344 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 218 transitions, 2262 flow [2024-11-10 22:28:53,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 24.266666666666666) internal successors, (364), 15 states have internal predecessors, (364), 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 22:28:53,345 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:53,345 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, 1] [2024-11-10 22:28:53,362 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 22:28:53,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-10 22:28:53,546 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-10 22:28:53,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:53,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1918230244, now seen corresponding path program 2 times [2024-11-10 22:28:53,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:53,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870797271] [2024-11-10 22:28:53,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:53,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:53,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:55,548 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:55,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:55,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870797271] [2024-11-10 22:28:55,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870797271] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:28:55,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683865983] [2024-11-10 22:28:55,549 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:28:55,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:55,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:55,551 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 22:28:55,552 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 22:28:55,635 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 22:28:55,636 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:28:55,637 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-10 22:28:55,638 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:28:55,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2024-11-10 22:28:55,873 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 22:28:55,873 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:28:55,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683865983] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:28:55,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:28:55,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [16] total 20 [2024-11-10 22:28:55,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494857173] [2024-11-10 22:28:55,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:28:55,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:28:55,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:55,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:28:55,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2024-11-10 22:28:55,923 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 62 [2024-11-10 22:28:55,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 218 transitions, 2262 flow. Second operand has 6 states, 6 states have (on average 27.5) internal successors, (165), 6 states have internal predecessors, (165), 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 22:28:55,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:55,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 62 [2024-11-10 22:28:55,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:56,645 INFO L124 PetriNetUnfolderBase]: 1394/3561 cut-off events. [2024-11-10 22:28:56,646 INFO L125 PetriNetUnfolderBase]: For 13344/13478 co-relation queries the response was YES. [2024-11-10 22:28:56,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12393 conditions, 3561 events. 1394/3561 cut-off events. For 13344/13478 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 27724 event pairs, 153 based on Foata normal form. 105/3337 useless extension candidates. Maximal degree in co-relation 12335. Up to 817 conditions per place. [2024-11-10 22:28:56,679 INFO L140 encePairwiseOnDemand]: 55/62 looper letters, 211 selfloop transitions, 35 changer transitions 4/284 dead transitions. [2024-11-10 22:28:56,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 284 transitions, 3197 flow [2024-11-10 22:28:56,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 22:28:56,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 22:28:56,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 239 transitions. [2024-11-10 22:28:56,681 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5506912442396313 [2024-11-10 22:28:56,681 INFO L175 Difference]: Start difference. First operand has 187 places, 218 transitions, 2262 flow. Second operand 7 states and 239 transitions. [2024-11-10 22:28:56,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 284 transitions, 3197 flow [2024-11-10 22:28:56,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 284 transitions, 2983 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-11-10 22:28:56,729 INFO L231 Difference]: Finished difference. Result has 185 places, 219 transitions, 2168 flow [2024-11-10 22:28:56,729 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2048, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2168, PETRI_PLACES=185, PETRI_TRANSITIONS=219} [2024-11-10 22:28:56,729 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 128 predicate places. [2024-11-10 22:28:56,730 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 219 transitions, 2168 flow [2024-11-10 22:28:56,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.5) internal successors, (165), 6 states have internal predecessors, (165), 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 22:28:56,730 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:56,730 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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 22:28:56,750 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 22:28:56,930 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,SelfDestructingSolverStorable16 [2024-11-10 22:28:56,931 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-10 22:28:56,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:56,931 INFO L85 PathProgramCache]: Analyzing trace with hash 337161941, now seen corresponding path program 1 times [2024-11-10 22:28:56,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:56,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368998234] [2024-11-10 22:28:56,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:56,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:56,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:57,073 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:28:57,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:57,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368998234] [2024-11-10 22:28:57,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368998234] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:28:57,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996413375] [2024-11-10 22:28:57,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:57,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:57,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:57,076 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 22:28:57,078 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 22:28:57,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:57,164 INFO L255 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-10 22:28:57,165 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:28:57,287 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:28:57,287 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:28:57,455 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:28:57,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996413375] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:28:57,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:28:57,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-10 22:28:57,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644550186] [2024-11-10 22:28:57,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:28:57,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-10 22:28:57,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:57,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-10 22:28:57,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-10 22:28:57,513 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 62 [2024-11-10 22:28:57,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 219 transitions, 2168 flow. Second operand has 15 states, 15 states have (on average 24.4) internal successors, (366), 15 states have internal predecessors, (366), 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 22:28:57,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:57,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 62 [2024-11-10 22:28:57,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:58,217 INFO L124 PetriNetUnfolderBase]: 947/2918 cut-off events. [2024-11-10 22:28:58,217 INFO L125 PetriNetUnfolderBase]: For 12492/12588 co-relation queries the response was YES. [2024-11-10 22:28:58,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10267 conditions, 2918 events. 947/2918 cut-off events. For 12492/12588 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 23489 event pairs, 611 based on Foata normal form. 65/2652 useless extension candidates. Maximal degree in co-relation 10209. Up to 1105 conditions per place. [2024-11-10 22:28:58,243 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 169 selfloop transitions, 60 changer transitions 41/302 dead transitions. [2024-11-10 22:28:58,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 302 transitions, 3374 flow [2024-11-10 22:28:58,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 22:28:58,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-10 22:28:58,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 310 transitions. [2024-11-10 22:28:58,245 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-11-10 22:28:58,245 INFO L175 Difference]: Start difference. First operand has 185 places, 219 transitions, 2168 flow. Second operand 11 states and 310 transitions. [2024-11-10 22:28:58,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 302 transitions, 3374 flow [2024-11-10 22:28:58,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 302 transitions, 3346 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-10 22:28:58,303 INFO L231 Difference]: Finished difference. Result has 194 places, 214 transitions, 2206 flow [2024-11-10 22:28:58,303 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2152, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2206, PETRI_PLACES=194, PETRI_TRANSITIONS=214} [2024-11-10 22:28:58,304 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 137 predicate places. [2024-11-10 22:28:58,304 INFO L471 AbstractCegarLoop]: Abstraction has has 194 places, 214 transitions, 2206 flow [2024-11-10 22:28:58,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 24.4) internal successors, (366), 15 states have internal predecessors, (366), 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 22:28:58,304 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:58,304 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:58,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-10 22:28:58,505 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,SelfDestructingSolverStorable17 [2024-11-10 22:28:58,505 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-10 22:28:58,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:58,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1041348843, now seen corresponding path program 2 times [2024-11-10 22:28:58,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:58,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402711780] [2024-11-10 22:28:58,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:58,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:58,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:59,401 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 22:28:59,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:59,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402711780] [2024-11-10 22:28:59,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402711780] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:28:59,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276260714] [2024-11-10 22:28:59,402 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:28:59,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:59,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:59,407 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 22:28:59,408 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 22:28:59,499 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 22:28:59,499 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:28:59,502 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-10 22:28:59,503 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:28:59,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2024-11-10 22:28:59,702 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-10 22:28:59,702 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:28:59,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276260714] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:28:59,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:28:59,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 14 [2024-11-10 22:28:59,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122902461] [2024-11-10 22:28:59,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:28:59,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:28:59,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:59,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:28:59,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2024-11-10 22:28:59,741 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 62 [2024-11-10 22:28:59,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 214 transitions, 2206 flow. Second operand has 6 states, 6 states have (on average 27.5) internal successors, (165), 6 states have internal predecessors, (165), 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 22:28:59,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:59,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 62 [2024-11-10 22:28:59,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:29:00,224 INFO L124 PetriNetUnfolderBase]: 1087/2859 cut-off events. [2024-11-10 22:29:00,224 INFO L125 PetriNetUnfolderBase]: For 13442/13502 co-relation queries the response was YES. [2024-11-10 22:29:00,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10237 conditions, 2859 events. 1087/2859 cut-off events. For 13442/13502 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 21558 event pairs, 132 based on Foata normal form. 69/2670 useless extension candidates. Maximal degree in co-relation 10177. Up to 978 conditions per place. [2024-11-10 22:29:00,250 INFO L140 encePairwiseOnDemand]: 55/62 looper letters, 219 selfloop transitions, 18 changer transitions 5/275 dead transitions. [2024-11-10 22:29:00,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 275 transitions, 3260 flow [2024-11-10 22:29:00,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 22:29:00,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 22:29:00,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 231 transitions. [2024-11-10 22:29:00,251 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.532258064516129 [2024-11-10 22:29:00,252 INFO L175 Difference]: Start difference. First operand has 194 places, 214 transitions, 2206 flow. Second operand 7 states and 231 transitions. [2024-11-10 22:29:00,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 275 transitions, 3260 flow [2024-11-10 22:29:00,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 275 transitions, 3192 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-11-10 22:29:00,295 INFO L231 Difference]: Finished difference. Result has 191 places, 213 transitions, 2196 flow [2024-11-10 22:29:00,295 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2160, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2196, PETRI_PLACES=191, PETRI_TRANSITIONS=213} [2024-11-10 22:29:00,296 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 134 predicate places. [2024-11-10 22:29:00,296 INFO L471 AbstractCegarLoop]: Abstraction has has 191 places, 213 transitions, 2196 flow [2024-11-10 22:29:00,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.5) internal successors, (165), 6 states have internal predecessors, (165), 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 22:29:00,296 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:29:00,296 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:29:00,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-10 22:29:00,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:29:00,501 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-10 22:29:00,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:29:00,501 INFO L85 PathProgramCache]: Analyzing trace with hash 2028865936, now seen corresponding path program 2 times [2024-11-10 22:29:00,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:29:00,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599615673] [2024-11-10 22:29:00,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:00,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:29:00,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:29:00,670 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 22:29:00,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:29:00,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599615673] [2024-11-10 22:29:00,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599615673] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:29:00,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010665805] [2024-11-10 22:29:00,671 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:29:00,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:29:00,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:29:00,673 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 22:29:00,677 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 22:29:00,773 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 22:29:00,773 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:29:00,774 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-10 22:29:00,777 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:29:00,944 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 22:29:00,944 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:29:01,156 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 22:29:01,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010665805] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:29:01,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:29:01,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-10 22:29:01,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845772619] [2024-11-10 22:29:01,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:29:01,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-10 22:29:01,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:29:01,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-10 22:29:01,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-10 22:29:01,204 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 62 [2024-11-10 22:29:01,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 213 transitions, 2196 flow. Second operand has 15 states, 15 states have (on average 24.266666666666666) internal successors, (364), 15 states have internal predecessors, (364), 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 22:29:01,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:29:01,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 62 [2024-11-10 22:29:01,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:29:01,822 INFO L124 PetriNetUnfolderBase]: 767/2347 cut-off events. [2024-11-10 22:29:01,822 INFO L125 PetriNetUnfolderBase]: For 10006/10082 co-relation queries the response was YES. [2024-11-10 22:29:01,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8392 conditions, 2347 events. 767/2347 cut-off events. For 10006/10082 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 17710 event pairs, 337 based on Foata normal form. 42/2125 useless extension candidates. Maximal degree in co-relation 8335. Up to 874 conditions per place. [2024-11-10 22:29:01,835 INFO L140 encePairwiseOnDemand]: 53/62 looper letters, 96 selfloop transitions, 61 changer transitions 58/243 dead transitions. [2024-11-10 22:29:01,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 243 transitions, 2737 flow [2024-11-10 22:29:01,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 22:29:01,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-10 22:29:01,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 332 transitions. [2024-11-10 22:29:01,837 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44623655913978494 [2024-11-10 22:29:01,837 INFO L175 Difference]: Start difference. First operand has 191 places, 213 transitions, 2196 flow. Second operand 12 states and 332 transitions. [2024-11-10 22:29:01,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 243 transitions, 2737 flow [2024-11-10 22:29:01,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 243 transitions, 2712 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-11-10 22:29:01,872 INFO L231 Difference]: Finished difference. Result has 195 places, 180 transitions, 1914 flow [2024-11-10 22:29:01,872 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2081, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1914, PETRI_PLACES=195, PETRI_TRANSITIONS=180} [2024-11-10 22:29:01,872 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 138 predicate places. [2024-11-10 22:29:01,873 INFO L471 AbstractCegarLoop]: Abstraction has has 195 places, 180 transitions, 1914 flow [2024-11-10 22:29:01,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 24.266666666666666) internal successors, (364), 15 states have internal predecessors, (364), 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 22:29:01,873 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:29:01,873 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:29:01,891 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 22:29:02,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:29:02,078 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-10 22:29:02,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:29:02,078 INFO L85 PathProgramCache]: Analyzing trace with hash 734116155, now seen corresponding path program 2 times [2024-11-10 22:29:02,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:29:02,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839477871] [2024-11-10 22:29:02,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:02,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:29:02,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:29:02,216 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 22:29:02,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:29:02,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839477871] [2024-11-10 22:29:02,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839477871] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:29:02,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519961832] [2024-11-10 22:29:02,217 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:29:02,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:29:02,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:29:02,219 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 22:29:02,221 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 22:29:02,317 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 22:29:02,317 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:29:02,319 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:29:02,320 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:29:02,390 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-10 22:29:02,390 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:29:02,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519961832] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:29:02,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:29:02,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-11-10 22:29:02,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700618168] [2024-11-10 22:29:02,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:29:02,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:29:02,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:29:02,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:29:02,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-10 22:29:02,392 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 62 [2024-11-10 22:29:02,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 180 transitions, 1914 flow. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 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 22:29:02,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:29:02,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 62 [2024-11-10 22:29:02,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:29:02,625 INFO L124 PetriNetUnfolderBase]: 625/1928 cut-off events. [2024-11-10 22:29:02,625 INFO L125 PetriNetUnfolderBase]: For 7842/7921 co-relation queries the response was YES. [2024-11-10 22:29:02,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6770 conditions, 1928 events. 625/1928 cut-off events. For 7842/7921 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 13344 event pairs, 220 based on Foata normal form. 62/1824 useless extension candidates. Maximal degree in co-relation 6714. Up to 600 conditions per place. [2024-11-10 22:29:02,635 INFO L140 encePairwiseOnDemand]: 59/62 looper letters, 155 selfloop transitions, 10 changer transitions 13/211 dead transitions. [2024-11-10 22:29:02,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 211 transitions, 2488 flow [2024-11-10 22:29:02,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:29:02,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:29:02,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 154 transitions. [2024-11-10 22:29:02,636 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6209677419354839 [2024-11-10 22:29:02,636 INFO L175 Difference]: Start difference. First operand has 195 places, 180 transitions, 1914 flow. Second operand 4 states and 154 transitions. [2024-11-10 22:29:02,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 211 transitions, 2488 flow [2024-11-10 22:29:02,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 211 transitions, 2312 flow, removed 14 selfloop flow, removed 17 redundant places. [2024-11-10 22:29:02,651 INFO L231 Difference]: Finished difference. Result has 173 places, 171 transitions, 1752 flow [2024-11-10 22:29:02,651 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1727, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1752, PETRI_PLACES=173, PETRI_TRANSITIONS=171} [2024-11-10 22:29:02,651 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 116 predicate places. [2024-11-10 22:29:02,652 INFO L471 AbstractCegarLoop]: Abstraction has has 173 places, 171 transitions, 1752 flow [2024-11-10 22:29:02,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 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 22:29:02,652 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:29:02,652 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:29:02,664 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 22:29:02,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:29:02,852 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-10 22:29:02,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:29:02,853 INFO L85 PathProgramCache]: Analyzing trace with hash 697079838, now seen corresponding path program 3 times [2024-11-10 22:29:02,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:29:02,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282588196] [2024-11-10 22:29:02,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:02,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:29:02,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:29:02,948 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-10 22:29:02,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:29:02,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282588196] [2024-11-10 22:29:02,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282588196] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:29:02,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:29:02,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 22:29:02,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442645865] [2024-11-10 22:29:02,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:29:02,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:29:02,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:29:02,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:29:02,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:29:02,951 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 62 [2024-11-10 22:29:02,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 171 transitions, 1752 flow. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 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 22:29:02,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:29:02,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 62 [2024-11-10 22:29:02,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:29:03,222 INFO L124 PetriNetUnfolderBase]: 575/1912 cut-off events. [2024-11-10 22:29:03,222 INFO L125 PetriNetUnfolderBase]: For 7352/7432 co-relation queries the response was YES. [2024-11-10 22:29:03,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6332 conditions, 1912 events. 575/1912 cut-off events. For 7352/7432 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 13447 event pairs, 196 based on Foata normal form. 49/1788 useless extension candidates. Maximal degree in co-relation 6283. Up to 552 conditions per place. [2024-11-10 22:29:03,235 INFO L140 encePairwiseOnDemand]: 59/62 looper letters, 167 selfloop transitions, 7 changer transitions 0/207 dead transitions. [2024-11-10 22:29:03,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 207 transitions, 2406 flow [2024-11-10 22:29:03,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:29:03,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:29:03,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 152 transitions. [2024-11-10 22:29:03,237 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6129032258064516 [2024-11-10 22:29:03,237 INFO L175 Difference]: Start difference. First operand has 173 places, 171 transitions, 1752 flow. Second operand 4 states and 152 transitions. [2024-11-10 22:29:03,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 207 transitions, 2406 flow [2024-11-10 22:29:03,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 207 transitions, 2366 flow, removed 20 selfloop flow, removed 1 redundant places. [2024-11-10 22:29:03,256 INFO L231 Difference]: Finished difference. Result has 168 places, 175 transitions, 1792 flow [2024-11-10 22:29:03,256 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1720, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1792, PETRI_PLACES=168, PETRI_TRANSITIONS=175} [2024-11-10 22:29:03,256 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 111 predicate places. [2024-11-10 22:29:03,257 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 175 transitions, 1792 flow [2024-11-10 22:29:03,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 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 22:29:03,257 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:29:03,257 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:29:03,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-10 22:29:03,257 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-10 22:29:03,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:29:03,258 INFO L85 PathProgramCache]: Analyzing trace with hash 694055457, now seen corresponding path program 1 times [2024-11-10 22:29:03,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:29:03,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906312066] [2024-11-10 22:29:03,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:03,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:29:03,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:29:04,100 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:29:04,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:29:04,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906312066] [2024-11-10 22:29:04,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906312066] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:29:04,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224686472] [2024-11-10 22:29:04,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:04,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:29:04,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:29:04,102 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 22:29:04,103 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 22:29:04,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:29:04,191 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-10 22:29:04,193 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:29:04,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-10 22:29:04,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-10 22:29:04,551 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-10 22:29:04,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-10 22:29:04,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2024-11-10 22:29:04,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2024-11-10 22:29:05,252 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-10 22:29:05,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2024-11-10 22:29:05,258 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:29:05,258 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:29:06,102 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 22:29:06,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2024-11-10 22:29:06,115 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 22:29:06,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 42 [2024-11-10 22:29:06,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 9 [2024-11-10 22:29:06,529 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:29:06,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224686472] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:29:06,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:29:06,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 37 [2024-11-10 22:29:06,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880513479] [2024-11-10 22:29:06,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:29:06,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-10 22:29:06,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:29:06,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-10 22:29:06,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1309, Unknown=1, NotChecked=0, Total=1482 [2024-11-10 22:29:06,920 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-10 22:29:06,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 175 transitions, 1792 flow. Second operand has 39 states, 39 states have (on average 16.641025641025642) internal successors, (649), 39 states have internal predecessors, (649), 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 22:29:06,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:29:06,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-10 22:29:06,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:29:11,388 INFO L124 PetriNetUnfolderBase]: 2965/6864 cut-off events. [2024-11-10 22:29:11,388 INFO L125 PetriNetUnfolderBase]: For 24439/24687 co-relation queries the response was YES. [2024-11-10 22:29:11,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23871 conditions, 6864 events. 2965/6864 cut-off events. For 24439/24687 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 55433 event pairs, 543 based on Foata normal form. 223/6539 useless extension candidates. Maximal degree in co-relation 23819. Up to 1291 conditions per place. [2024-11-10 22:29:11,433 INFO L140 encePairwiseOnDemand]: 47/62 looper letters, 277 selfloop transitions, 246 changer transitions 33/571 dead transitions. [2024-11-10 22:29:11,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 571 transitions, 6312 flow [2024-11-10 22:29:11,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-10 22:29:11,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2024-11-10 22:29:11,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 915 transitions. [2024-11-10 22:29:11,436 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.31400137268359646 [2024-11-10 22:29:11,436 INFO L175 Difference]: Start difference. First operand has 168 places, 175 transitions, 1792 flow. Second operand 47 states and 915 transitions. [2024-11-10 22:29:11,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 571 transitions, 6312 flow [2024-11-10 22:29:11,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 571 transitions, 6264 flow, removed 24 selfloop flow, removed 0 redundant places. [2024-11-10 22:29:11,474 INFO L231 Difference]: Finished difference. Result has 223 places, 325 transitions, 3958 flow [2024-11-10 22:29:11,475 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1780, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=3958, PETRI_PLACES=223, PETRI_TRANSITIONS=325} [2024-11-10 22:29:11,475 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 166 predicate places. [2024-11-10 22:29:11,475 INFO L471 AbstractCegarLoop]: Abstraction has has 223 places, 325 transitions, 3958 flow [2024-11-10 22:29:11,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 16.641025641025642) internal successors, (649), 39 states have internal predecessors, (649), 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 22:29:11,475 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:29:11,476 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:29:11,488 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 22:29:11,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:29:11,676 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-10 22:29:11,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:29:11,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1816534338, now seen corresponding path program 1 times [2024-11-10 22:29:11,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:29:11,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610381451] [2024-11-10 22:29:11,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:11,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:29:11,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:29:12,599 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:29:12,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:29:12,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610381451] [2024-11-10 22:29:12,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610381451] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:29:12,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712540570] [2024-11-10 22:29:12,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:12,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:29:12,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:29:12,602 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 22:29:12,605 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 22:29:12,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:29:12,711 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-10 22:29:12,713 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:29:12,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-10 22:29:13,505 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-10 22:29:13,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2024-11-10 22:29:13,513 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 22:29:13,513 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:29:14,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2024-11-10 22:29:14,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 24 [2024-11-10 22:29:14,348 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 22:29:14,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712540570] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:29:14,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:29:14,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 13] total 40 [2024-11-10 22:29:14,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251583698] [2024-11-10 22:29:14,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:29:14,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-10 22:29:14,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:29:14,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-10 22:29:14,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1471, Unknown=0, NotChecked=0, Total=1640 [2024-11-10 22:29:14,624 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-10 22:29:14,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 325 transitions, 3958 flow. Second operand has 41 states, 41 states have (on average 19.975609756097562) internal successors, (819), 41 states have internal predecessors, (819), 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 22:29:14,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:29:14,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-10 22:29:14,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:29:19,845 INFO L124 PetriNetUnfolderBase]: 5489/13058 cut-off events. [2024-11-10 22:29:19,845 INFO L125 PetriNetUnfolderBase]: For 56086/56530 co-relation queries the response was YES. [2024-11-10 22:29:19,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50444 conditions, 13058 events. 5489/13058 cut-off events. For 56086/56530 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 122789 event pairs, 666 based on Foata normal form. 441/12668 useless extension candidates. Maximal degree in co-relation 50381. Up to 1980 conditions per place. [2024-11-10 22:29:19,952 INFO L140 encePairwiseOnDemand]: 47/62 looper letters, 453 selfloop transitions, 249 changer transitions 22/753 dead transitions. [2024-11-10 22:29:19,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 753 transitions, 9620 flow [2024-11-10 22:29:19,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-10 22:29:19,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2024-11-10 22:29:19,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 963 transitions. [2024-11-10 22:29:19,956 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3788355625491739 [2024-11-10 22:29:19,956 INFO L175 Difference]: Start difference. First operand has 223 places, 325 transitions, 3958 flow. Second operand 41 states and 963 transitions. [2024-11-10 22:29:19,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 753 transitions, 9620 flow [2024-11-10 22:29:20,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 753 transitions, 9024 flow, removed 286 selfloop flow, removed 10 redundant places. [2024-11-10 22:29:20,050 INFO L231 Difference]: Finished difference. Result has 267 places, 362 transitions, 4723 flow [2024-11-10 22:29:20,050 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3752, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=215, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=4723, PETRI_PLACES=267, PETRI_TRANSITIONS=362} [2024-11-10 22:29:20,051 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 210 predicate places. [2024-11-10 22:29:20,051 INFO L471 AbstractCegarLoop]: Abstraction has has 267 places, 362 transitions, 4723 flow [2024-11-10 22:29:20,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 19.975609756097562) internal successors, (819), 41 states have internal predecessors, (819), 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 22:29:20,051 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:29:20,051 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:29:20,064 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 22:29:20,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:29:20,252 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-10 22:29:20,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:29:20,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1174565504, now seen corresponding path program 1 times [2024-11-10 22:29:20,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:29:20,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891869823] [2024-11-10 22:29:20,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:20,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:29:20,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:29:21,150 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 22:29:21,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:29:21,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891869823] [2024-11-10 22:29:21,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891869823] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:29:21,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443316631] [2024-11-10 22:29:21,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:21,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:29:21,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:29:21,152 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 22:29:21,154 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 22:29:21,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:29:21,247 INFO L255 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-10 22:29:21,248 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:29:21,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2024-11-10 22:29:21,557 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-10 22:29:21,557 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:29:21,615 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 22:29:21,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 16 [2024-11-10 22:29:21,746 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-10 22:29:21,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443316631] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:29:21,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:29:21,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 6] total 19 [2024-11-10 22:29:21,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516022086] [2024-11-10 22:29:21,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:29:21,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-10 22:29:21,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:29:21,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-10 22:29:21,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=371, Unknown=0, NotChecked=0, Total=420 [2024-11-10 22:29:22,237 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-10 22:29:22,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 362 transitions, 4723 flow. Second operand has 21 states, 21 states have (on average 18.80952380952381) internal successors, (395), 21 states have internal predecessors, (395), 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 22:29:22,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:29:22,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-10 22:29:22,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:29:28,651 INFO L124 PetriNetUnfolderBase]: 11774/25963 cut-off events. [2024-11-10 22:29:28,651 INFO L125 PetriNetUnfolderBase]: For 142798/143483 co-relation queries the response was YES. [2024-11-10 22:29:29,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105692 conditions, 25963 events. 11774/25963 cut-off events. For 142798/143483 co-relation queries the response was YES. Maximal size of possible extension queue 722. Compared 248515 event pairs, 1704 based on Foata normal form. 809/25399 useless extension candidates. Maximal degree in co-relation 105614. Up to 4489 conditions per place. [2024-11-10 22:29:29,111 INFO L140 encePairwiseOnDemand]: 46/62 looper letters, 768 selfloop transitions, 222 changer transitions 25/1048 dead transitions. [2024-11-10 22:29:29,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 1048 transitions, 13784 flow [2024-11-10 22:29:29,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-10 22:29:29,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2024-11-10 22:29:29,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 1164 transitions. [2024-11-10 22:29:29,114 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37548387096774194 [2024-11-10 22:29:29,114 INFO L175 Difference]: Start difference. First operand has 267 places, 362 transitions, 4723 flow. Second operand 50 states and 1164 transitions. [2024-11-10 22:29:29,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 1048 transitions, 13784 flow [2024-11-10 22:29:29,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 1048 transitions, 12519 flow, removed 322 selfloop flow, removed 18 redundant places. [2024-11-10 22:29:29,502 INFO L231 Difference]: Finished difference. Result has 323 places, 522 transitions, 6496 flow [2024-11-10 22:29:29,502 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=4306, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=6496, PETRI_PLACES=323, PETRI_TRANSITIONS=522} [2024-11-10 22:29:29,503 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 266 predicate places. [2024-11-10 22:29:29,503 INFO L471 AbstractCegarLoop]: Abstraction has has 323 places, 522 transitions, 6496 flow [2024-11-10 22:29:29,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 18.80952380952381) internal successors, (395), 21 states have internal predecessors, (395), 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 22:29:29,503 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:29:29,503 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:29:29,520 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 22:29:29,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:29:29,704 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-10 22:29:29,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:29:29,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1528288022, now seen corresponding path program 2 times [2024-11-10 22:29:29,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:29:29,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093351766] [2024-11-10 22:29:29,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:29,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:29:29,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:29:30,526 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 22:29:30,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:29:30,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093351766] [2024-11-10 22:29:30,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093351766] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:29:30,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930517356] [2024-11-10 22:29:30,527 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:29:30,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:29:30,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:29:30,529 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 22:29:30,531 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 22:29:30,645 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 22:29:30,645 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:29:30,647 INFO L255 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-10 22:29:30,649 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:29:32,097 INFO L349 Elim1Store]: treesize reduction 25, result has 49.0 percent of original size [2024-11-10 22:29:32,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 35 [2024-11-10 22:29:32,167 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:29:32,167 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:29:32,975 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 22:29:32,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 47 treesize of output 109 [2024-11-10 22:29:34,064 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 22:29:34,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930517356] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:29:34,065 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:29:34,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 19, 17] total 47 [2024-11-10 22:29:34,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64086459] [2024-11-10 22:29:34,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:29:34,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-10 22:29:34,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:29:34,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-10 22:29:34,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=2131, Unknown=0, NotChecked=0, Total=2352 [2024-11-10 22:29:35,147 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-11-10 22:29:35,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 522 transitions, 6496 flow. Second operand has 49 states, 49 states have (on average 14.89795918367347) internal successors, (730), 49 states have internal predecessors, (730), 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 22:29:35,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:29:35,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-11-10 22:29:35,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:29:39,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]