./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/array-eq-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/array-eq-symm.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6897befed0dbbae24492a1e82d50fcd0be6b3857b241d882a904d02a513d7a6d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 16:44:46,891 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 16:44:46,956 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-13 16:44:46,960 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 16:44:46,960 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 16:44:46,987 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 16:44:46,988 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 16:44:46,989 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 16:44:46,989 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 16:44:46,991 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 16:44:46,992 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 16:44:46,992 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 16:44:46,993 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 16:44:46,993 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 16:44:46,993 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 16:44:46,994 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 16:44:46,997 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 16:44:46,997 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 16:44:46,998 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 16:44:46,998 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 16:44:46,998 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 16:44:47,000 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 16:44:47,001 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 16:44:47,001 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 16:44:47,001 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 16:44:47,001 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-13 16:44:47,002 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 16:44:47,002 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 16:44:47,002 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 16:44:47,002 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 16:44:47,003 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 16:44:47,003 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 16:44:47,004 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 16:44:47,004 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 16:44:47,004 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:44:47,005 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 16:44:47,005 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 16:44:47,005 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 16:44:47,006 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 16:44:47,006 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 16:44:47,006 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 16:44:47,006 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 16:44:47,007 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 16:44:47,007 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 16:44:47,007 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6897befed0dbbae24492a1e82d50fcd0be6b3857b241d882a904d02a513d7a6d [2024-10-13 16:44:47,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 16:44:47,293 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 16:44:47,297 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 16:44:47,298 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 16:44:47,298 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 16:44:47,300 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/array-eq-symm.wvr.c [2024-10-13 16:44:48,805 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 16:44:48,992 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 16:44:48,993 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/array-eq-symm.wvr.c [2024-10-13 16:44:48,999 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d35c9d093/e22ed5c5e24c4f5ab21197f2fcb61438/FLAG7b30e2c3a [2024-10-13 16:44:49,010 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d35c9d093/e22ed5c5e24c4f5ab21197f2fcb61438 [2024-10-13 16:44:49,012 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 16:44:49,013 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 16:44:49,014 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 16:44:49,014 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 16:44:49,019 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 16:44:49,020 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:44:49" (1/1) ... [2024-10-13 16:44:49,022 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@504d23ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:44:49, skipping insertion in model container [2024-10-13 16:44:49,022 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:44:49" (1/1) ... [2024-10-13 16:44:49,044 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 16:44:49,225 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:44:49,233 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 16:44:49,256 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:44:49,277 INFO L204 MainTranslator]: Completed translation [2024-10-13 16:44:49,278 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:44:49 WrapperNode [2024-10-13 16:44:49,278 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 16:44:49,279 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 16:44:49,279 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 16:44:49,279 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 16:44:49,285 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:44:49" (1/1) ... [2024-10-13 16:44:49,291 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:44:49" (1/1) ... [2024-10-13 16:44:49,313 INFO L138 Inliner]: procedures = 22, calls = 20, calls flagged for inlining = 8, calls inlined = 10, statements flattened = 111 [2024-10-13 16:44:49,313 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 16:44:49,314 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 16:44:49,314 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 16:44:49,314 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 16:44:49,326 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:44:49" (1/1) ... [2024-10-13 16:44:49,326 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:44:49" (1/1) ... [2024-10-13 16:44:49,329 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:44:49" (1/1) ... [2024-10-13 16:44:49,344 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]. [2024-10-13 16:44:49,344 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:44:49" (1/1) ... [2024-10-13 16:44:49,345 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:44:49" (1/1) ... [2024-10-13 16:44:49,353 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:44:49" (1/1) ... [2024-10-13 16:44:49,358 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:44:49" (1/1) ... [2024-10-13 16:44:49,360 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:44:49" (1/1) ... [2024-10-13 16:44:49,361 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:44:49" (1/1) ... [2024-10-13 16:44:49,364 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 16:44:49,364 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 16:44:49,365 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 16:44:49,365 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 16:44:49,367 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:44:49" (1/1) ... [2024-10-13 16:44:49,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:44:49,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:44:49,408 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) [2024-10-13 16:44:49,411 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 [2024-10-13 16:44:49,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 16:44:49,459 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 16:44:49,459 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 16:44:49,459 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 16:44:49,459 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 16:44:49,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 16:44:49,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 16:44:49,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 16:44:49,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 16:44:49,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-13 16:44:49,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 16:44:49,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 16:44:49,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 16:44:49,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 16:44:49,464 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 16:44:49,577 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 16:44:49,578 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 16:44:49,823 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 16:44:49,823 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 16:44:50,130 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 16:44:50,131 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-13 16:44:50,131 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:44:50 BoogieIcfgContainer [2024-10-13 16:44:50,132 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 16:44:50,134 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 16:44:50,135 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 16:44:50,138 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 16:44:50,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 04:44:49" (1/3) ... [2024-10-13 16:44:50,139 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d69eecb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:44:50, skipping insertion in model container [2024-10-13 16:44:50,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:44:49" (2/3) ... [2024-10-13 16:44:50,140 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d69eecb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:44:50, skipping insertion in model container [2024-10-13 16:44:50,140 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:44:50" (3/3) ... [2024-10-13 16:44:50,141 INFO L112 eAbstractionObserver]: Analyzing ICFG array-eq-symm.wvr.c [2024-10-13 16:44:50,161 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 16:44:50,162 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-10-13 16:44:50,162 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 16:44:50,210 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-13 16:44:50,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 42 transitions, 98 flow [2024-10-13 16:44:50,273 INFO L124 PetriNetUnfolderBase]: 6/40 cut-off events. [2024-10-13 16:44:50,274 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 16:44:50,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 40 events. 6/40 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 82 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-10-13 16:44:50,277 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 42 transitions, 98 flow [2024-10-13 16:44:50,281 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 38 transitions, 85 flow [2024-10-13 16:44:50,295 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 16:44:50,301 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;@2098a3b0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 16:44:50,301 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-10-13 16:44:50,305 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 16:44:50,305 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-13 16:44:50,306 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 16:44:50,306 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:44:50,307 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-13 16:44:50,307 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-13 16:44:50,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:44:50,313 INFO L85 PathProgramCache]: Analyzing trace with hash 466594, now seen corresponding path program 1 times [2024-10-13 16:44:50,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:44:50,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020020292] [2024-10-13 16:44:50,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:44:50,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:44:50,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:44:50,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:44:50,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:44:50,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020020292] [2024-10-13 16:44:50,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020020292] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:44:50,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:44:50,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:44:50,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735331666] [2024-10-13 16:44:50,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:44:50,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:44:50,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:44:50,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:44:50,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:44:50,651 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-10-13 16:44:50,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 38 transitions, 85 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2024-10-13 16:44:50,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:44:50,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-10-13 16:44:50,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:44:50,823 INFO L124 PetriNetUnfolderBase]: 170/329 cut-off events. [2024-10-13 16:44:50,824 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-10-13 16:44:50,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 616 conditions, 329 events. 170/329 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1413 event pairs, 92 based on Foata normal form. 2/231 useless extension candidates. Maximal degree in co-relation 554. Up to 256 conditions per place. [2024-10-13 16:44:50,831 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 20 selfloop transitions, 6 changer transitions 0/36 dead transitions. [2024-10-13 16:44:50,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 36 transitions, 133 flow [2024-10-13 16:44:50,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:44:50,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:44:50,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 76 transitions. [2024-10-13 16:44:50,845 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-10-13 16:44:50,846 INFO L175 Difference]: Start difference. First operand has 39 places, 38 transitions, 85 flow. Second operand 4 states and 76 transitions. [2024-10-13 16:44:50,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 36 transitions, 133 flow [2024-10-13 16:44:50,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 36 transitions, 128 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:44:50,854 INFO L231 Difference]: Finished difference. Result has 37 places, 36 transitions, 88 flow [2024-10-13 16:44:50,856 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=88, PETRI_PLACES=37, PETRI_TRANSITIONS=36} [2024-10-13 16:44:50,861 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, -2 predicate places. [2024-10-13 16:44:50,861 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 36 transitions, 88 flow [2024-10-13 16:44:50,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2024-10-13 16:44:50,862 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:44:50,862 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-10-13 16:44:50,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 16:44:50,863 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-13 16:44:50,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:44:50,864 INFO L85 PathProgramCache]: Analyzing trace with hash 14464846, now seen corresponding path program 1 times [2024-10-13 16:44:50,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:44:50,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270095027] [2024-10-13 16:44:50,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:44:50,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:44:50,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:44:50,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:44:50,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:44:50,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270095027] [2024-10-13 16:44:50,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270095027] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:44:50,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:44:50,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:44:50,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178172408] [2024-10-13 16:44:50,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:44:50,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:44:50,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:44:50,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:44:50,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:44:51,018 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-10-13 16:44:51,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 36 transitions, 88 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2024-10-13 16:44:51,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:44:51,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-10-13 16:44:51,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:44:51,174 INFO L124 PetriNetUnfolderBase]: 172/337 cut-off events. [2024-10-13 16:44:51,174 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-13 16:44:51,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 633 conditions, 337 events. 172/337 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1444 event pairs, 92 based on Foata normal form. 2/241 useless extension candidates. Maximal degree in co-relation 585. Up to 265 conditions per place. [2024-10-13 16:44:51,179 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 25 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2024-10-13 16:44:51,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 42 transitions, 174 flow [2024-10-13 16:44:51,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:44:51,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:44:51,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 82 transitions. [2024-10-13 16:44:51,185 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4880952380952381 [2024-10-13 16:44:51,185 INFO L175 Difference]: Start difference. First operand has 37 places, 36 transitions, 88 flow. Second operand 4 states and 82 transitions. [2024-10-13 16:44:51,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 42 transitions, 174 flow [2024-10-13 16:44:51,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 42 transitions, 152 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:44:51,188 INFO L231 Difference]: Finished difference. Result has 40 places, 42 transitions, 132 flow [2024-10-13 16:44:51,189 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=132, PETRI_PLACES=40, PETRI_TRANSITIONS=42} [2024-10-13 16:44:51,190 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 1 predicate places. [2024-10-13 16:44:51,191 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 42 transitions, 132 flow [2024-10-13 16:44:51,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2024-10-13 16:44:51,192 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:44:51,192 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-13 16:44:51,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 16:44:51,193 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-13 16:44:51,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:44:51,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1425960662, now seen corresponding path program 1 times [2024-10-13 16:44:51,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:44:51,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008220075] [2024-10-13 16:44:51,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:44:51,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:44:51,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:44:51,315 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:44:51,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:44:51,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008220075] [2024-10-13 16:44:51,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008220075] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:44:51,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685954869] [2024-10-13 16:44:51,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:44:51,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:44:51,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:44:51,320 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) [2024-10-13 16:44:51,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 16:44:51,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:44:51,391 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:44:51,395 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:44:51,437 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:44:51,437 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:44:51,488 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:44:51,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685954869] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:44:51,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:44:51,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-10-13 16:44:51,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830908051] [2024-10-13 16:44:51,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:44:51,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 16:44:51,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:44:51,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 16:44:51,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-13 16:44:51,523 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-10-13 16:44:51,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 42 transitions, 132 flow. Second operand has 10 states, 10 states have (on average 13.0) internal successors, (130), 10 states have internal predecessors, (130), 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) [2024-10-13 16:44:51,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:44:51,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-10-13 16:44:51,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:44:51,757 INFO L124 PetriNetUnfolderBase]: 178/361 cut-off events. [2024-10-13 16:44:51,757 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-10-13 16:44:51,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 709 conditions, 361 events. 178/361 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1631 event pairs, 92 based on Foata normal form. 0/259 useless extension candidates. Maximal degree in co-relation 596. Up to 268 conditions per place. [2024-10-13 16:44:51,762 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 25 selfloop transitions, 25 changer transitions 0/60 dead transitions. [2024-10-13 16:44:51,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 60 transitions, 310 flow [2024-10-13 16:44:51,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 16:44:51,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 16:44:51,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-10-13 16:44:51,766 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41904761904761906 [2024-10-13 16:44:51,766 INFO L175 Difference]: Start difference. First operand has 40 places, 42 transitions, 132 flow. Second operand 10 states and 176 transitions. [2024-10-13 16:44:51,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 60 transitions, 310 flow [2024-10-13 16:44:51,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 60 transitions, 310 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 16:44:51,770 INFO L231 Difference]: Finished difference. Result has 52 places, 60 transitions, 294 flow [2024-10-13 16:44:51,771 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=294, PETRI_PLACES=52, PETRI_TRANSITIONS=60} [2024-10-13 16:44:51,771 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 13 predicate places. [2024-10-13 16:44:51,772 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 60 transitions, 294 flow [2024-10-13 16:44:51,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.0) internal successors, (130), 10 states have internal predecessors, (130), 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) [2024-10-13 16:44:51,772 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:44:51,772 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:44:51,786 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 16:44:51,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:44:51,976 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-13 16:44:51,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:44:51,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1837290423, now seen corresponding path program 1 times [2024-10-13 16:44:51,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:44:51,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010397800] [2024-10-13 16:44:51,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:44:51,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:44:52,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:44:52,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:44:52,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:44:52,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010397800] [2024-10-13 16:44:52,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010397800] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:44:52,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:44:52,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:44:52,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703915807] [2024-10-13 16:44:52,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:44:52,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:44:52,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:44:52,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:44:52,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:44:52,090 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-10-13 16:44:52,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 60 transitions, 294 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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) [2024-10-13 16:44:52,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:44:52,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-10-13 16:44:52,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:44:52,200 INFO L124 PetriNetUnfolderBase]: 202/382 cut-off events. [2024-10-13 16:44:52,200 INFO L125 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2024-10-13 16:44:52,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 814 conditions, 382 events. 202/382 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1651 event pairs, 75 based on Foata normal form. 14/289 useless extension candidates. Maximal degree in co-relation 748. Up to 248 conditions per place. [2024-10-13 16:44:52,203 INFO L140 encePairwiseOnDemand]: 38/42 looper letters, 55 selfloop transitions, 3 changer transitions 0/68 dead transitions. [2024-10-13 16:44:52,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 68 transitions, 428 flow [2024-10-13 16:44:52,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:44:52,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:44:52,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2024-10-13 16:44:52,207 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-10-13 16:44:52,208 INFO L175 Difference]: Start difference. First operand has 52 places, 60 transitions, 294 flow. Second operand 4 states and 91 transitions. [2024-10-13 16:44:52,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 68 transitions, 428 flow [2024-10-13 16:44:52,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 68 transitions, 364 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-10-13 16:44:52,215 INFO L231 Difference]: Finished difference. Result has 50 places, 59 transitions, 234 flow [2024-10-13 16:44:52,215 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=234, PETRI_PLACES=50, PETRI_TRANSITIONS=59} [2024-10-13 16:44:52,216 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 11 predicate places. [2024-10-13 16:44:52,217 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 59 transitions, 234 flow [2024-10-13 16:44:52,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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) [2024-10-13 16:44:52,218 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:44:52,218 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:44:52,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 16:44:52,218 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-13 16:44:52,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:44:52,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1121427785, now seen corresponding path program 1 times [2024-10-13 16:44:52,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:44:52,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747856797] [2024-10-13 16:44:52,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:44:52,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:44:52,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:44:52,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:44:52,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:44:52,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747856797] [2024-10-13 16:44:52,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747856797] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:44:52,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:44:52,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:44:52,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172216201] [2024-10-13 16:44:52,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:44:52,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:44:52,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:44:52,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:44:52,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:44:52,404 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-10-13 16:44:52,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 59 transitions, 234 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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) [2024-10-13 16:44:52,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:44:52,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-10-13 16:44:52,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:44:52,529 INFO L124 PetriNetUnfolderBase]: 308/559 cut-off events. [2024-10-13 16:44:52,529 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2024-10-13 16:44:52,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1192 conditions, 559 events. 308/559 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2444 event pairs, 58 based on Foata normal form. 14/466 useless extension candidates. Maximal degree in co-relation 1135. Up to 271 conditions per place. [2024-10-13 16:44:52,533 INFO L140 encePairwiseOnDemand]: 38/42 looper letters, 71 selfloop transitions, 3 changer transitions 0/84 dead transitions. [2024-10-13 16:44:52,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 84 transitions, 441 flow [2024-10-13 16:44:52,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:44:52,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:44:52,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2024-10-13 16:44:52,536 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6369047619047619 [2024-10-13 16:44:52,536 INFO L175 Difference]: Start difference. First operand has 50 places, 59 transitions, 234 flow. Second operand 4 states and 107 transitions. [2024-10-13 16:44:52,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 84 transitions, 441 flow [2024-10-13 16:44:52,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 84 transitions, 431 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:44:52,540 INFO L231 Difference]: Finished difference. Result has 52 places, 61 transitions, 248 flow [2024-10-13 16:44:52,540 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=248, PETRI_PLACES=52, PETRI_TRANSITIONS=61} [2024-10-13 16:44:52,543 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 13 predicate places. [2024-10-13 16:44:52,544 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 61 transitions, 248 flow [2024-10-13 16:44:52,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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) [2024-10-13 16:44:52,544 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:44:52,545 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:44:52,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 16:44:52,545 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-13 16:44:52,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:44:52,547 INFO L85 PathProgramCache]: Analyzing trace with hash -586243611, now seen corresponding path program 1 times [2024-10-13 16:44:52,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:44:52,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281761630] [2024-10-13 16:44:52,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:44:52,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:44:52,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:44:52,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:44:52,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:44:52,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281761630] [2024-10-13 16:44:52,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281761630] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:44:52,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:44:52,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:44:52,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951022944] [2024-10-13 16:44:52,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:44:52,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:44:52,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:44:52,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:44:52,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:44:52,615 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-10-13 16:44:52,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 61 transitions, 248 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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) [2024-10-13 16:44:52,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:44:52,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-10-13 16:44:52,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:44:52,758 INFO L124 PetriNetUnfolderBase]: 511/904 cut-off events. [2024-10-13 16:44:52,759 INFO L125 PetriNetUnfolderBase]: For 195/209 co-relation queries the response was YES. [2024-10-13 16:44:52,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1972 conditions, 904 events. 511/904 cut-off events. For 195/209 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4207 event pairs, 117 based on Foata normal form. 22/761 useless extension candidates. Maximal degree in co-relation 1913. Up to 451 conditions per place. [2024-10-13 16:44:52,765 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 75 selfloop transitions, 3 changer transitions 0/87 dead transitions. [2024-10-13 16:44:52,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 87 transitions, 480 flow [2024-10-13 16:44:52,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:44:52,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:44:52,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 106 transitions. [2024-10-13 16:44:52,767 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6309523809523809 [2024-10-13 16:44:52,767 INFO L175 Difference]: Start difference. First operand has 52 places, 61 transitions, 248 flow. Second operand 4 states and 106 transitions. [2024-10-13 16:44:52,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 87 transitions, 480 flow [2024-10-13 16:44:52,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 87 transitions, 476 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:44:52,773 INFO L231 Difference]: Finished difference. Result has 56 places, 63 transitions, 268 flow [2024-10-13 16:44:52,774 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=268, PETRI_PLACES=56, PETRI_TRANSITIONS=63} [2024-10-13 16:44:52,775 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 17 predicate places. [2024-10-13 16:44:52,775 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 63 transitions, 268 flow [2024-10-13 16:44:52,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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) [2024-10-13 16:44:52,776 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:44:52,776 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:44:52,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 16:44:52,777 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-13 16:44:52,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:44:52,777 INFO L85 PathProgramCache]: Analyzing trace with hash 549054843, now seen corresponding path program 1 times [2024-10-13 16:44:52,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:44:52,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081119165] [2024-10-13 16:44:52,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:44:52,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:44:52,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:44:52,846 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 16:44:52,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:44:52,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081119165] [2024-10-13 16:44:52,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081119165] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:44:52,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:44:52,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:44:52,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674700815] [2024-10-13 16:44:52,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:44:52,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:44:52,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:44:52,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:44:52,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:44:52,851 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 42 [2024-10-13 16:44:52,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 63 transitions, 268 flow. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2024-10-13 16:44:52,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:44:52,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 42 [2024-10-13 16:44:52,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:44:53,001 INFO L124 PetriNetUnfolderBase]: 542/1071 cut-off events. [2024-10-13 16:44:53,002 INFO L125 PetriNetUnfolderBase]: For 332/332 co-relation queries the response was YES. [2024-10-13 16:44:53,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2443 conditions, 1071 events. 542/1071 cut-off events. For 332/332 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 5594 event pairs, 375 based on Foata normal form. 0/962 useless extension candidates. Maximal degree in co-relation 2358. Up to 698 conditions per place. [2024-10-13 16:44:53,008 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 66 selfloop transitions, 13 changer transitions 3/93 dead transitions. [2024-10-13 16:44:53,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 93 transitions, 549 flow [2024-10-13 16:44:53,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:44:53,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:44:53,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2024-10-13 16:44:53,009 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-10-13 16:44:53,009 INFO L175 Difference]: Start difference. First operand has 56 places, 63 transitions, 268 flow. Second operand 5 states and 126 transitions. [2024-10-13 16:44:53,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 93 transitions, 549 flow [2024-10-13 16:44:53,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 93 transitions, 546 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:44:53,013 INFO L231 Difference]: Finished difference. Result has 61 places, 73 transitions, 386 flow [2024-10-13 16:44:53,013 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=386, PETRI_PLACES=61, PETRI_TRANSITIONS=73} [2024-10-13 16:44:53,014 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 22 predicate places. [2024-10-13 16:44:53,014 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 73 transitions, 386 flow [2024-10-13 16:44:53,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2024-10-13 16:44:53,014 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:44:53,014 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:44:53,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 16:44:53,014 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-13 16:44:53,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:44:53,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1873333471, now seen corresponding path program 1 times [2024-10-13 16:44:53,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:44:53,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818022619] [2024-10-13 16:44:53,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:44:53,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:44:53,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:44:53,115 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 16:44:53,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:44:53,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818022619] [2024-10-13 16:44:53,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818022619] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:44:53,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:44:53,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:44:53,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717144043] [2024-10-13 16:44:53,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:44:53,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:44:53,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:44:53,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:44:53,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:44:53,118 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 42 [2024-10-13 16:44:53,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 73 transitions, 386 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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) [2024-10-13 16:44:53,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:44:53,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 42 [2024-10-13 16:44:53,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:44:53,265 INFO L124 PetriNetUnfolderBase]: 465/918 cut-off events. [2024-10-13 16:44:53,266 INFO L125 PetriNetUnfolderBase]: For 381/381 co-relation queries the response was YES. [2024-10-13 16:44:53,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2165 conditions, 918 events. 465/918 cut-off events. For 381/381 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 4557 event pairs, 319 based on Foata normal form. 0/869 useless extension candidates. Maximal degree in co-relation 2066. Up to 698 conditions per place. [2024-10-13 16:44:53,271 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 50 selfloop transitions, 12 changer transitions 14/87 dead transitions. [2024-10-13 16:44:53,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 87 transitions, 581 flow [2024-10-13 16:44:53,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:44:53,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:44:53,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2024-10-13 16:44:53,273 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.580952380952381 [2024-10-13 16:44:53,273 INFO L175 Difference]: Start difference. First operand has 61 places, 73 transitions, 386 flow. Second operand 5 states and 122 transitions. [2024-10-13 16:44:53,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 87 transitions, 581 flow [2024-10-13 16:44:53,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 87 transitions, 577 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-13 16:44:53,277 INFO L231 Difference]: Finished difference. Result has 65 places, 72 transitions, 408 flow [2024-10-13 16:44:53,277 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=408, PETRI_PLACES=65, PETRI_TRANSITIONS=72} [2024-10-13 16:44:53,278 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 26 predicate places. [2024-10-13 16:44:53,278 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 72 transitions, 408 flow [2024-10-13 16:44:53,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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) [2024-10-13 16:44:53,278 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:44:53,278 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-13 16:44:53,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 16:44:53,279 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-13 16:44:53,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:44:53,279 INFO L85 PathProgramCache]: Analyzing trace with hash -2104009394, now seen corresponding path program 2 times [2024-10-13 16:44:53,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:44:53,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169965553] [2024-10-13 16:44:53,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:44:53,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:44:53,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:44:53,423 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:44:53,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:44:53,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169965553] [2024-10-13 16:44:53,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169965553] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:44:53,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685719656] [2024-10-13 16:44:53,424 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:44:53,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:44:53,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:44:53,426 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) [2024-10-13 16:44:53,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 16:44:53,489 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 16:44:53,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:44:53,490 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 16:44:53,491 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:44:53,539 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-13 16:44:53,539 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:44:53,578 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-13 16:44:53,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685719656] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:44:53,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:44:53,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-10-13 16:44:53,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327765208] [2024-10-13 16:44:53,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:44:53,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 16:44:53,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:44:53,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 16:44:53,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-13 16:44:53,613 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-10-13 16:44:53,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 72 transitions, 408 flow. Second operand has 14 states, 14 states have (on average 13.142857142857142) internal successors, (184), 14 states have internal predecessors, (184), 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) [2024-10-13 16:44:53,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:44:53,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-10-13 16:44:53,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:44:53,977 INFO L124 PetriNetUnfolderBase]: 467/931 cut-off events. [2024-10-13 16:44:53,977 INFO L125 PetriNetUnfolderBase]: For 525/525 co-relation queries the response was YES. [2024-10-13 16:44:53,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2262 conditions, 931 events. 467/931 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 4782 event pairs, 319 based on Foata normal form. 4/930 useless extension candidates. Maximal degree in co-relation 2116. Up to 738 conditions per place. [2024-10-13 16:44:53,984 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 27 selfloop transitions, 43 changer transitions 0/79 dead transitions. [2024-10-13 16:44:53,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 79 transitions, 595 flow [2024-10-13 16:44:53,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-13 16:44:53,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-13 16:44:53,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 346 transitions. [2024-10-13 16:44:53,986 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34325396825396826 [2024-10-13 16:44:53,986 INFO L175 Difference]: Start difference. First operand has 65 places, 72 transitions, 408 flow. Second operand 24 states and 346 transitions. [2024-10-13 16:44:53,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 79 transitions, 595 flow [2024-10-13 16:44:53,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 79 transitions, 557 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 16:44:53,991 INFO L231 Difference]: Finished difference. Result has 84 places, 79 transitions, 524 flow [2024-10-13 16:44:53,991 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=524, PETRI_PLACES=84, PETRI_TRANSITIONS=79} [2024-10-13 16:44:53,992 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 45 predicate places. [2024-10-13 16:44:53,992 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 79 transitions, 524 flow [2024-10-13 16:44:53,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 13.142857142857142) internal successors, (184), 14 states have internal predecessors, (184), 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) [2024-10-13 16:44:53,992 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:44:53,992 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:44:54,011 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 16:44:54,193 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,SelfDestructingSolverStorable8 [2024-10-13 16:44:54,194 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-13 16:44:54,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:44:54,194 INFO L85 PathProgramCache]: Analyzing trace with hash 681192179, now seen corresponding path program 1 times [2024-10-13 16:44:54,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:44:54,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715331005] [2024-10-13 16:44:54,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:44:54,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:44:54,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:44:54,292 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-13 16:44:54,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:44:54,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715331005] [2024-10-13 16:44:54,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715331005] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:44:54,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:44:54,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 16:44:54,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834670800] [2024-10-13 16:44:54,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:44:54,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:44:54,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:44:54,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:44:54,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 16:44:54,295 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 42 [2024-10-13 16:44:54,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 79 transitions, 524 flow. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 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) [2024-10-13 16:44:54,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:44:54,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 42 [2024-10-13 16:44:54,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:44:54,489 INFO L124 PetriNetUnfolderBase]: 565/1102 cut-off events. [2024-10-13 16:44:54,489 INFO L125 PetriNetUnfolderBase]: For 564/586 co-relation queries the response was YES. [2024-10-13 16:44:54,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2700 conditions, 1102 events. 565/1102 cut-off events. For 564/586 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5695 event pairs, 238 based on Foata normal form. 22/1119 useless extension candidates. Maximal degree in co-relation 2605. Up to 407 conditions per place. [2024-10-13 16:44:54,496 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 86 selfloop transitions, 11 changer transitions 3/110 dead transitions. [2024-10-13 16:44:54,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 110 transitions, 819 flow [2024-10-13 16:44:54,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:44:54,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:44:54,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 137 transitions. [2024-10-13 16:44:54,498 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6523809523809524 [2024-10-13 16:44:54,498 INFO L175 Difference]: Start difference. First operand has 84 places, 79 transitions, 524 flow. Second operand 5 states and 137 transitions. [2024-10-13 16:44:54,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 110 transitions, 819 flow [2024-10-13 16:44:54,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 110 transitions, 707 flow, removed 13 selfloop flow, removed 11 redundant places. [2024-10-13 16:44:54,504 INFO L231 Difference]: Finished difference. Result has 78 places, 79 transitions, 437 flow [2024-10-13 16:44:54,504 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=437, PETRI_PLACES=78, PETRI_TRANSITIONS=79} [2024-10-13 16:44:54,505 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 39 predicate places. [2024-10-13 16:44:54,506 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 79 transitions, 437 flow [2024-10-13 16:44:54,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 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) [2024-10-13 16:44:54,506 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:44:54,507 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:44:54,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-13 16:44:54,507 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-13 16:44:54,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:44:54,507 INFO L85 PathProgramCache]: Analyzing trace with hash -2072043351, now seen corresponding path program 1 times [2024-10-13 16:44:54,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:44:54,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275100619] [2024-10-13 16:44:54,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:44:54,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:44:54,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:44:54,600 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 16:44:54,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:44:54,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275100619] [2024-10-13 16:44:54,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275100619] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:44:54,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:44:54,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 16:44:54,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470607882] [2024-10-13 16:44:54,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:44:54,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:44:54,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:44:54,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:44:54,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-13 16:44:54,602 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 42 [2024-10-13 16:44:54,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 79 transitions, 437 flow. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 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) [2024-10-13 16:44:54,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:44:54,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 42 [2024-10-13 16:44:54,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:44:54,748 INFO L124 PetriNetUnfolderBase]: 488/971 cut-off events. [2024-10-13 16:44:54,749 INFO L125 PetriNetUnfolderBase]: For 574/584 co-relation queries the response was YES. [2024-10-13 16:44:54,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2409 conditions, 971 events. 488/971 cut-off events. For 574/584 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 4866 event pairs, 191 based on Foata normal form. 7/977 useless extension candidates. Maximal degree in co-relation 2321. Up to 429 conditions per place. [2024-10-13 16:44:54,755 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 72 selfloop transitions, 10 changer transitions 10/102 dead transitions. [2024-10-13 16:44:54,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 102 transitions, 690 flow [2024-10-13 16:44:54,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:44:54,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:44:54,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2024-10-13 16:44:54,756 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6238095238095238 [2024-10-13 16:44:54,756 INFO L175 Difference]: Start difference. First operand has 78 places, 79 transitions, 437 flow. Second operand 5 states and 131 transitions. [2024-10-13 16:44:54,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 102 transitions, 690 flow [2024-10-13 16:44:54,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 102 transitions, 667 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:44:54,761 INFO L231 Difference]: Finished difference. Result has 80 places, 78 transitions, 430 flow [2024-10-13 16:44:54,761 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=430, PETRI_PLACES=80, PETRI_TRANSITIONS=78} [2024-10-13 16:44:54,762 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 41 predicate places. [2024-10-13 16:44:54,762 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 78 transitions, 430 flow [2024-10-13 16:44:54,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 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) [2024-10-13 16:44:54,763 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:44:54,763 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:44:54,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-13 16:44:54,763 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-13 16:44:54,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:44:54,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1665728021, now seen corresponding path program 1 times [2024-10-13 16:44:54,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:44:54,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86545476] [2024-10-13 16:44:54,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:44:54,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:44:54,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:44:54,910 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:44:54,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:44:54,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86545476] [2024-10-13 16:44:54,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86545476] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:44:54,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350907210] [2024-10-13 16:44:54,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:44:54,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:44:54,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:44:54,914 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) [2024-10-13 16:44:54,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 16:44:54,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:44:54,997 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 16:44:54,999 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:44:55,166 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:44:55,166 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:44:55,301 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:44:55,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350907210] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:44:55,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:44:55,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 20 [2024-10-13 16:44:55,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396615424] [2024-10-13 16:44:55,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:44:55,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-13 16:44:55,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:44:55,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-13 16:44:55,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2024-10-13 16:44:55,438 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-10-13 16:44:55,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 78 transitions, 430 flow. Second operand has 21 states, 21 states have (on average 11.80952380952381) internal successors, (248), 21 states have internal predecessors, (248), 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) [2024-10-13 16:44:55,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:44:55,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-10-13 16:44:55,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:44:56,480 INFO L124 PetriNetUnfolderBase]: 1464/2712 cut-off events. [2024-10-13 16:44:56,480 INFO L125 PetriNetUnfolderBase]: For 1927/1993 co-relation queries the response was YES. [2024-10-13 16:44:56,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6825 conditions, 2712 events. 1464/2712 cut-off events. For 1927/1993 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 16692 event pairs, 506 based on Foata normal form. 66/2755 useless extension candidates. Maximal degree in co-relation 6701. Up to 415 conditions per place. [2024-10-13 16:44:56,496 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 166 selfloop transitions, 45 changer transitions 50/269 dead transitions. [2024-10-13 16:44:56,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 269 transitions, 1679 flow [2024-10-13 16:44:56,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-13 16:44:56,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-10-13 16:44:56,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 486 transitions. [2024-10-13 16:44:56,499 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.413265306122449 [2024-10-13 16:44:56,499 INFO L175 Difference]: Start difference. First operand has 80 places, 78 transitions, 430 flow. Second operand 28 states and 486 transitions. [2024-10-13 16:44:56,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 269 transitions, 1679 flow [2024-10-13 16:44:56,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 269 transitions, 1605 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-10-13 16:44:56,510 INFO L231 Difference]: Finished difference. Result has 106 places, 98 transitions, 694 flow [2024-10-13 16:44:56,510 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=694, PETRI_PLACES=106, PETRI_TRANSITIONS=98} [2024-10-13 16:44:56,511 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 67 predicate places. [2024-10-13 16:44:56,511 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 98 transitions, 694 flow [2024-10-13 16:44:56,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 11.80952380952381) internal successors, (248), 21 states have internal predecessors, (248), 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) [2024-10-13 16:44:56,511 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:44:56,511 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:44:56,530 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 16:44:56,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:44:56,712 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-13 16:44:56,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:44:56,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1616203321, now seen corresponding path program 1 times [2024-10-13 16:44:56,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:44:56,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117631191] [2024-10-13 16:44:56,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:44:56,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:44:56,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:44:56,799 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 16:44:56,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:44:56,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117631191] [2024-10-13 16:44:56,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117631191] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:44:56,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304473492] [2024-10-13 16:44:56,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:44:56,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:44:56,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:44:56,802 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) [2024-10-13 16:44:56,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 16:44:56,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:44:56,885 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 16:44:56,887 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:44:57,023 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:44:57,023 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:44:57,162 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:44:57,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304473492] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:44:57,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:44:57,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 8] total 18 [2024-10-13 16:44:57,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339316579] [2024-10-13 16:44:57,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:44:57,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-13 16:44:57,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:44:57,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-13 16:44:57,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2024-10-13 16:44:57,248 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-10-13 16:44:57,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 98 transitions, 694 flow. Second operand has 19 states, 19 states have (on average 12.263157894736842) internal successors, (233), 19 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:44:57,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:44:57,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-10-13 16:44:57,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:44:57,993 INFO L124 PetriNetUnfolderBase]: 1292/2388 cut-off events. [2024-10-13 16:44:57,994 INFO L125 PetriNetUnfolderBase]: For 2769/2781 co-relation queries the response was YES. [2024-10-13 16:44:58,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6292 conditions, 2388 events. 1292/2388 cut-off events. For 2769/2781 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 14252 event pairs, 418 based on Foata normal form. 76/2420 useless extension candidates. Maximal degree in co-relation 6152. Up to 569 conditions per place. [2024-10-13 16:44:58,009 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 68 selfloop transitions, 56 changer transitions 43/174 dead transitions. [2024-10-13 16:44:58,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 174 transitions, 1367 flow [2024-10-13 16:44:58,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-13 16:44:58,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-13 16:44:58,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 228 transitions. [2024-10-13 16:44:58,012 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4175824175824176 [2024-10-13 16:44:58,013 INFO L175 Difference]: Start difference. First operand has 106 places, 98 transitions, 694 flow. Second operand 13 states and 228 transitions. [2024-10-13 16:44:58,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 174 transitions, 1367 flow [2024-10-13 16:44:58,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 174 transitions, 1321 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-10-13 16:44:58,024 INFO L231 Difference]: Finished difference. Result has 111 places, 91 transitions, 718 flow [2024-10-13 16:44:58,024 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=647, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=718, PETRI_PLACES=111, PETRI_TRANSITIONS=91} [2024-10-13 16:44:58,025 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 72 predicate places. [2024-10-13 16:44:58,025 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 91 transitions, 718 flow [2024-10-13 16:44:58,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 12.263157894736842) internal successors, (233), 19 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:44:58,026 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:44:58,026 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1] [2024-10-13 16:44:58,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-13 16:44:58,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:44:58,230 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-13 16:44:58,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:44:58,231 INFO L85 PathProgramCache]: Analyzing trace with hash 209643134, now seen corresponding path program 1 times [2024-10-13 16:44:58,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:44:58,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109877350] [2024-10-13 16:44:58,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:44:58,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:44:58,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:44:58,480 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:44:58,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:44:58,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109877350] [2024-10-13 16:44:58,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109877350] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:44:58,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256451755] [2024-10-13 16:44:58,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:44:58,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:44:58,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:44:58,483 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) [2024-10-13 16:44:58,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 16:44:58,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:44:58,575 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-13 16:44:58,577 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:44:58,632 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:44:58,632 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:44:58,843 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:44:58,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256451755] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:44:58,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:44:58,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2024-10-13 16:44:58,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170256121] [2024-10-13 16:44:58,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:44:58,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-13 16:44:58,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:44:58,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-13 16:44:58,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2024-10-13 16:44:58,905 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-10-13 16:44:58,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 91 transitions, 718 flow. Second operand has 28 states, 28 states have (on average 13.071428571428571) internal successors, (366), 28 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) [2024-10-13 16:44:58,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:44:58,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-10-13 16:44:58,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:44:59,399 INFO L124 PetriNetUnfolderBase]: 808/1621 cut-off events. [2024-10-13 16:44:59,400 INFO L125 PetriNetUnfolderBase]: For 3076/3076 co-relation queries the response was YES. [2024-10-13 16:44:59,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4795 conditions, 1621 events. 808/1621 cut-off events. For 3076/3076 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 8988 event pairs, 556 based on Foata normal form. 21/1635 useless extension candidates. Maximal degree in co-relation 4210. Up to 1276 conditions per place. [2024-10-13 16:44:59,410 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 34 selfloop transitions, 119 changer transitions 0/161 dead transitions. [2024-10-13 16:44:59,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 161 transitions, 1822 flow [2024-10-13 16:44:59,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-13 16:44:59,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-10-13 16:44:59,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 414 transitions. [2024-10-13 16:44:59,414 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3791208791208791 [2024-10-13 16:44:59,414 INFO L175 Difference]: Start difference. First operand has 111 places, 91 transitions, 718 flow. Second operand 26 states and 414 transitions. [2024-10-13 16:44:59,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 161 transitions, 1822 flow [2024-10-13 16:44:59,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 161 transitions, 1779 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-10-13 16:44:59,426 INFO L231 Difference]: Finished difference. Result has 124 places, 161 transitions, 1799 flow [2024-10-13 16:44:59,427 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1799, PETRI_PLACES=124, PETRI_TRANSITIONS=161} [2024-10-13 16:44:59,427 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 85 predicate places. [2024-10-13 16:44:59,427 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 161 transitions, 1799 flow [2024-10-13 16:44:59,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 13.071428571428571) internal successors, (366), 28 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) [2024-10-13 16:44:59,428 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:44:59,428 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:44:59,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-13 16:44:59,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-13 16:44:59,634 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-13 16:44:59,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:44:59,634 INFO L85 PathProgramCache]: Analyzing trace with hash -531801311, now seen corresponding path program 1 times [2024-10-13 16:44:59,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:44:59,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359246409] [2024-10-13 16:44:59,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:44:59,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:44:59,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:44:59,708 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-13 16:44:59,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:44:59,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359246409] [2024-10-13 16:44:59,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359246409] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:44:59,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420356847] [2024-10-13 16:44:59,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:44:59,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:44:59,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:44:59,710 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) [2024-10-13 16:44:59,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-13 16:44:59,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:44:59,795 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 16:44:59,796 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:44:59,929 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 16:44:59,930 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:45:00,048 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 16:45:00,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420356847] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:45:00,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:45:00,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 17 [2024-10-13 16:45:00,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885070191] [2024-10-13 16:45:00,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:45:00,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-13 16:45:00,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:00,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-13 16:45:00,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2024-10-13 16:45:00,158 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-10-13 16:45:00,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 161 transitions, 1799 flow. Second operand has 18 states, 18 states have (on average 12.555555555555555) internal successors, (226), 18 states have internal predecessors, (226), 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) [2024-10-13 16:45:00,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:00,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-10-13 16:45:00,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:00,773 INFO L124 PetriNetUnfolderBase]: 958/1804 cut-off events. [2024-10-13 16:45:00,774 INFO L125 PetriNetUnfolderBase]: For 2717/2739 co-relation queries the response was YES. [2024-10-13 16:45:00,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5166 conditions, 1804 events. 958/1804 cut-off events. For 2717/2739 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 9301 event pairs, 232 based on Foata normal form. 40/1840 useless extension candidates. Maximal degree in co-relation 4933. Up to 393 conditions per place. [2024-10-13 16:45:00,789 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 143 selfloop transitions, 61 changer transitions 66/277 dead transitions. [2024-10-13 16:45:00,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 277 transitions, 2877 flow [2024-10-13 16:45:00,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-13 16:45:00,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-13 16:45:00,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 304 transitions. [2024-10-13 16:45:00,791 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4257703081232493 [2024-10-13 16:45:00,791 INFO L175 Difference]: Start difference. First operand has 124 places, 161 transitions, 1799 flow. Second operand 17 states and 304 transitions. [2024-10-13 16:45:00,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 277 transitions, 2877 flow [2024-10-13 16:45:00,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 277 transitions, 2422 flow, removed 162 selfloop flow, removed 12 redundant places. [2024-10-13 16:45:00,809 INFO L231 Difference]: Finished difference. Result has 131 places, 161 transitions, 1549 flow [2024-10-13 16:45:00,810 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1420, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1549, PETRI_PLACES=131, PETRI_TRANSITIONS=161} [2024-10-13 16:45:00,811 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 92 predicate places. [2024-10-13 16:45:00,811 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 161 transitions, 1549 flow [2024-10-13 16:45:00,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 12.555555555555555) internal successors, (226), 18 states have internal predecessors, (226), 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) [2024-10-13 16:45:00,811 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:00,811 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:00,829 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-13 16:45:01,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-13 16:45:01,012 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-13 16:45:01,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:01,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1578804539, now seen corresponding path program 2 times [2024-10-13 16:45:01,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:01,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882592229] [2024-10-13 16:45:01,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:01,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:01,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:01,095 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-13 16:45:01,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:01,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882592229] [2024-10-13 16:45:01,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882592229] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:45:01,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597434129] [2024-10-13 16:45:01,096 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:45:01,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:45:01,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:45:01,098 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) [2024-10-13 16:45:01,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-13 16:45:01,169 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 16:45:01,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:45:01,171 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 16:45:01,172 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:45:01,213 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-13 16:45:01,213 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:45:01,252 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-13 16:45:01,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597434129] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:45:01,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:45:01,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 7 [2024-10-13 16:45:01,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307799853] [2024-10-13 16:45:01,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:45:01,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 16:45:01,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:01,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 16:45:01,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-10-13 16:45:01,264 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-10-13 16:45:01,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 161 transitions, 1549 flow. Second operand has 9 states, 9 states have (on average 17.11111111111111) internal successors, (154), 9 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:01,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:01,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-10-13 16:45:01,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:01,704 INFO L124 PetriNetUnfolderBase]: 1250/2262 cut-off events. [2024-10-13 16:45:01,704 INFO L125 PetriNetUnfolderBase]: For 3248/3335 co-relation queries the response was YES. [2024-10-13 16:45:01,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6553 conditions, 2262 events. 1250/2262 cut-off events. For 3248/3335 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 11384 event pairs, 227 based on Foata normal form. 0/2257 useless extension candidates. Maximal degree in co-relation 6344. Up to 679 conditions per place. [2024-10-13 16:45:01,716 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 217 selfloop transitions, 8 changer transitions 21/254 dead transitions. [2024-10-13 16:45:01,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 254 transitions, 2484 flow [2024-10-13 16:45:01,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 16:45:01,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 16:45:01,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 224 transitions. [2024-10-13 16:45:01,718 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2024-10-13 16:45:01,718 INFO L175 Difference]: Start difference. First operand has 131 places, 161 transitions, 1549 flow. Second operand 9 states and 224 transitions. [2024-10-13 16:45:01,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 254 transitions, 2484 flow [2024-10-13 16:45:01,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 254 transitions, 2364 flow, removed 18 selfloop flow, removed 11 redundant places. [2024-10-13 16:45:01,733 INFO L231 Difference]: Finished difference. Result has 124 places, 160 transitions, 1499 flow [2024-10-13 16:45:01,733 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1473, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1499, PETRI_PLACES=124, PETRI_TRANSITIONS=160} [2024-10-13 16:45:01,734 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 85 predicate places. [2024-10-13 16:45:01,734 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 160 transitions, 1499 flow [2024-10-13 16:45:01,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.11111111111111) internal successors, (154), 9 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:01,734 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:01,734 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:01,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-13 16:45:01,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:45:01,935 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-13 16:45:01,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:01,936 INFO L85 PathProgramCache]: Analyzing trace with hash -122621203, now seen corresponding path program 2 times [2024-10-13 16:45:01,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:01,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431023189] [2024-10-13 16:45:01,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:01,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:01,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:02,202 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 16:45:02,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:02,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431023189] [2024-10-13 16:45:02,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431023189] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:45:02,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825889561] [2024-10-13 16:45:02,203 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:45:02,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:45:02,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:45:02,205 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) [2024-10-13 16:45:02,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-13 16:45:02,280 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 16:45:02,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:45:02,281 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 16:45:02,283 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:45:02,345 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-13 16:45:02,345 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:45:02,398 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-13 16:45:02,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825889561] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:45:02,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:45:02,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 14 [2024-10-13 16:45:02,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704122223] [2024-10-13 16:45:02,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:45:02,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 16:45:02,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:02,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 16:45:02,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-10-13 16:45:02,493 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-10-13 16:45:02,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 160 transitions, 1499 flow. Second operand has 15 states, 15 states have (on average 16.466666666666665) internal successors, (247), 15 states have internal predecessors, (247), 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) [2024-10-13 16:45:02,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:02,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-10-13 16:45:02,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:03,244 INFO L124 PetriNetUnfolderBase]: 1156/2363 cut-off events. [2024-10-13 16:45:03,245 INFO L125 PetriNetUnfolderBase]: For 4294/4294 co-relation queries the response was YES. [2024-10-13 16:45:03,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7281 conditions, 2363 events. 1156/2363 cut-off events. For 4294/4294 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 13657 event pairs, 352 based on Foata normal form. 80/2440 useless extension candidates. Maximal degree in co-relation 7028. Up to 523 conditions per place. [2024-10-13 16:45:03,258 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 57 selfloop transitions, 87 changer transitions 189/336 dead transitions. [2024-10-13 16:45:03,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 336 transitions, 3169 flow [2024-10-13 16:45:03,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-13 16:45:03,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-13 16:45:03,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 461 transitions. [2024-10-13 16:45:03,261 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4573412698412698 [2024-10-13 16:45:03,261 INFO L175 Difference]: Start difference. First operand has 124 places, 160 transitions, 1499 flow. Second operand 24 states and 461 transitions. [2024-10-13 16:45:03,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 336 transitions, 3169 flow [2024-10-13 16:45:03,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 336 transitions, 3032 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-10-13 16:45:03,286 INFO L231 Difference]: Finished difference. Result has 140 places, 147 transitions, 1917 flow [2024-10-13 16:45:03,287 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1470, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1917, PETRI_PLACES=140, PETRI_TRANSITIONS=147} [2024-10-13 16:45:03,287 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 101 predicate places. [2024-10-13 16:45:03,288 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 147 transitions, 1917 flow [2024-10-13 16:45:03,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 16.466666666666665) internal successors, (247), 15 states have internal predecessors, (247), 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) [2024-10-13 16:45:03,288 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:03,288 INFO L204 CegarLoopForPetriNet]: trace histogram [13, 13, 12, 1, 1, 1] [2024-10-13 16:45:03,305 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-13 16:45:03,489 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,SelfDestructingSolverStorable16 [2024-10-13 16:45:03,489 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-13 16:45:03,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:03,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1446661780, now seen corresponding path program 2 times [2024-10-13 16:45:03,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:03,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835400522] [2024-10-13 16:45:03,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:03,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:03,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:04,023 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:45:04,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:04,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835400522] [2024-10-13 16:45:04,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835400522] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:45:04,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379415052] [2024-10-13 16:45:04,024 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:45:04,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:45:04,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:45:04,025 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) [2024-10-13 16:45:04,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-13 16:45:04,096 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 16:45:04,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:45:04,097 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 16:45:04,098 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:45:04,195 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-10-13 16:45:04,195 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:45:04,285 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-10-13 16:45:04,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379415052] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:45:04,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:45:04,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 3, 3] total 30 [2024-10-13 16:45:04,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633967040] [2024-10-13 16:45:04,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:45:04,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-13 16:45:04,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:04,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-13 16:45:04,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2024-10-13 16:45:04,338 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-10-13 16:45:04,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 147 transitions, 1917 flow. Second operand has 31 states, 31 states have (on average 13.096774193548388) internal successors, (406), 31 states have internal predecessors, (406), 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) [2024-10-13 16:45:04,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:04,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-10-13 16:45:04,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:04,832 INFO L124 PetriNetUnfolderBase]: 15/225 cut-off events. [2024-10-13 16:45:04,832 INFO L125 PetriNetUnfolderBase]: For 1962/1962 co-relation queries the response was YES. [2024-10-13 16:45:04,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1274 conditions, 225 events. 15/225 cut-off events. For 1962/1962 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 700 event pairs, 0 based on Foata normal form. 8/233 useless extension candidates. Maximal degree in co-relation 1247. Up to 70 conditions per place. [2024-10-13 16:45:04,834 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 0 selfloop transitions, 0 changer transitions 157/157 dead transitions. [2024-10-13 16:45:04,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 157 transitions, 2358 flow [2024-10-13 16:45:04,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-10-13 16:45:04,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-10-13 16:45:04,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 433 transitions. [2024-10-13 16:45:04,836 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34365079365079365 [2024-10-13 16:45:04,837 INFO L175 Difference]: Start difference. First operand has 140 places, 147 transitions, 1917 flow. Second operand 30 states and 433 transitions. [2024-10-13 16:45:04,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 157 transitions, 2358 flow [2024-10-13 16:45:04,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 157 transitions, 1663 flow, removed 90 selfloop flow, removed 28 redundant places. [2024-10-13 16:45:04,850 INFO L231 Difference]: Finished difference. Result has 101 places, 0 transitions, 0 flow [2024-10-13 16:45:04,850 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1253, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=0, PETRI_PLACES=101, PETRI_TRANSITIONS=0} [2024-10-13 16:45:04,850 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 62 predicate places. [2024-10-13 16:45:04,851 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 0 transitions, 0 flow [2024-10-13 16:45:04,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 13.096774193548388) internal successors, (406), 31 states have internal predecessors, (406), 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) [2024-10-13 16:45:04,854 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 14 remaining) [2024-10-13 16:45:04,855 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 14 remaining) [2024-10-13 16:45:04,855 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2024-10-13 16:45:04,855 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2024-10-13 16:45:04,856 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2024-10-13 16:45:04,856 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 14 remaining) [2024-10-13 16:45:04,856 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 14 remaining) [2024-10-13 16:45:04,856 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 14 remaining) [2024-10-13 16:45:04,856 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 14 remaining) [2024-10-13 16:45:04,856 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 14 remaining) [2024-10-13 16:45:04,856 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2024-10-13 16:45:04,856 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2024-10-13 16:45:04,857 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2024-10-13 16:45:04,857 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2024-10-13 16:45:04,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-13 16:45:05,057 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,SelfDestructingSolverStorable17 [2024-10-13 16:45:05,058 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:05,063 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-13 16:45:05,063 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-13 16:45:05,067 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 04:45:05 BasicIcfg [2024-10-13 16:45:05,068 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-13 16:45:05,068 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-13 16:45:05,068 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-13 16:45:05,068 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-13 16:45:05,068 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:44:50" (3/4) ... [2024-10-13 16:45:05,070 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-13 16:45:05,072 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-10-13 16:45:05,072 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-10-13 16:45:05,079 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 112 nodes and edges [2024-10-13 16:45:05,081 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2024-10-13 16:45:05,082 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2024-10-13 16:45:05,082 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-10-13 16:45:05,164 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-13 16:45:05,164 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-13 16:45:05,164 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-13 16:45:05,165 INFO L158 Benchmark]: Toolchain (without parser) took 16152.11ms. Allocated memory was 176.2MB in the beginning and 329.3MB in the end (delta: 153.1MB). Free memory was 119.2MB in the beginning and 146.6MB in the end (delta: -27.3MB). Peak memory consumption was 127.3MB. Max. memory is 16.1GB. [2024-10-13 16:45:05,165 INFO L158 Benchmark]: CDTParser took 1.05ms. Allocated memory is still 176.2MB. Free memory is still 138.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 16:45:05,165 INFO L158 Benchmark]: CACSL2BoogieTranslator took 264.41ms. Allocated memory is still 176.2MB. Free memory was 118.7MB in the beginning and 106.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-13 16:45:05,166 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.36ms. Allocated memory is still 176.2MB. Free memory was 106.1MB in the beginning and 104.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 16:45:05,166 INFO L158 Benchmark]: Boogie Preprocessor took 49.75ms. Allocated memory is still 176.2MB. Free memory was 104.0MB in the beginning and 101.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 16:45:05,166 INFO L158 Benchmark]: RCFGBuilder took 767.20ms. Allocated memory was 176.2MB in the beginning and 262.1MB in the end (delta: 86.0MB). Free memory was 101.9MB in the beginning and 221.1MB in the end (delta: -119.2MB). Peak memory consumption was 41.2MB. Max. memory is 16.1GB. [2024-10-13 16:45:05,166 INFO L158 Benchmark]: TraceAbstraction took 14933.65ms. Allocated memory was 262.1MB in the beginning and 329.3MB in the end (delta: 67.1MB). Free memory was 221.1MB in the beginning and 151.8MB in the end (delta: 69.3MB). Peak memory consumption was 136.4MB. Max. memory is 16.1GB. [2024-10-13 16:45:05,166 INFO L158 Benchmark]: Witness Printer took 96.44ms. Allocated memory is still 329.3MB. Free memory was 151.8MB in the beginning and 146.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-13 16:45:05,168 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.05ms. Allocated memory is still 176.2MB. Free memory is still 138.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 264.41ms. Allocated memory is still 176.2MB. Free memory was 118.7MB in the beginning and 106.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.36ms. Allocated memory is still 176.2MB. Free memory was 106.1MB in the beginning and 104.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.75ms. Allocated memory is still 176.2MB. Free memory was 104.0MB in the beginning and 101.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 767.20ms. Allocated memory was 176.2MB in the beginning and 262.1MB in the end (delta: 86.0MB). Free memory was 101.9MB in the beginning and 221.1MB in the end (delta: -119.2MB). Peak memory consumption was 41.2MB. Max. memory is 16.1GB. * TraceAbstraction took 14933.65ms. Allocated memory was 262.1MB in the beginning and 329.3MB in the end (delta: 67.1MB). Free memory was 221.1MB in the beginning and 151.8MB in the end (delta: 69.3MB). Peak memory consumption was 136.4MB. Max. memory is 16.1GB. * Witness Printer took 96.44ms. Allocated memory is still 329.3MB. Free memory was 151.8MB in the beginning and 146.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 57 locations, 14 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 14.8s, OverallIterations: 18, TraceHistogramMax: 13, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 7.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2033 SdHoareTripleChecker+Valid, 3.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1938 mSDsluCounter, 1695 SdHoareTripleChecker+Invalid, 2.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1608 mSDsCounter, 276 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4747 IncrementalHoareTripleChecker+Invalid, 5023 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 276 mSolverCounterUnsat, 87 mSDtfsCounter, 4747 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 637 GetRequests, 325 SyntacticMatches, 8 SemanticMatches, 304 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2049 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1917occurred in iteration=17, InterpolantAutomatonStates: 221, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 500 NumberOfCodeBlocks, 416 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 667 ConstructedInterpolants, 0 QuantifiedInterpolants, 2501 SizeOfPredicates, 40 NumberOfNonLiveVariables, 1149 ConjunctsInSsa, 68 ConjunctsInUnsatCore, 36 InterpolantComputations, 9 PerfectInterpolantSequences, 605/1123 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-13 16:45:05,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE