./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/chl-chromosome-opt-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/chl-chromosome-opt-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 b034d85232772d264d33ccb960d3ce3e7bf57df858fd0c6fd0b22127388c3f9a --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 16:45:03,958 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 16:45:04,031 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-13 16:45:04,035 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 16:45:04,035 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 16:45:04,075 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 16:45:04,076 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 16:45:04,076 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 16:45:04,078 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 16:45:04,079 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 16:45:04,079 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 16:45:04,080 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 16:45:04,080 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 16:45:04,080 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 16:45:04,081 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 16:45:04,081 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 16:45:04,081 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 16:45:04,081 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 16:45:04,082 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 16:45:04,082 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 16:45:04,086 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 16:45:04,086 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 16:45:04,086 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 16:45:04,086 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 16:45:04,087 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 16:45:04,087 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-13 16:45:04,087 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 16:45:04,087 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 16:45:04,087 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 16:45:04,088 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 16:45:04,088 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 16:45:04,088 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 16:45:04,088 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 16:45:04,088 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 16:45:04,088 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:45:04,089 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 16:45:04,089 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 16:45:04,091 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 16:45:04,091 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 16:45:04,091 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 16:45:04,091 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 16:45:04,091 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 16:45:04,091 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 16:45:04,092 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 16:45:04,092 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b034d85232772d264d33ccb960d3ce3e7bf57df858fd0c6fd0b22127388c3f9a [2024-10-13 16:45:04,329 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 16:45:04,356 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 16:45:04,360 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 16:45:04,361 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 16:45:04,362 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 16:45:04,363 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c [2024-10-13 16:45:05,904 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 16:45:06,086 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 16:45:06,087 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c [2024-10-13 16:45:06,094 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5810cf57d/064c34c6cd2b42e1ac14aedf2647e6e2/FLAGd02a50141 [2024-10-13 16:45:06,105 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5810cf57d/064c34c6cd2b42e1ac14aedf2647e6e2 [2024-10-13 16:45:06,108 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 16:45:06,109 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 16:45:06,110 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 16:45:06,110 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 16:45:06,115 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 16:45:06,116 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:45:06" (1/1) ... [2024-10-13 16:45:06,117 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c46963a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:06, skipping insertion in model container [2024-10-13 16:45:06,117 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:45:06" (1/1) ... [2024-10-13 16:45:06,140 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 16:45:06,349 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:45:06,358 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 16:45:06,384 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:45:06,402 INFO L204 MainTranslator]: Completed translation [2024-10-13 16:45:06,403 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:06 WrapperNode [2024-10-13 16:45:06,403 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 16:45:06,404 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 16:45:06,404 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 16:45:06,404 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 16:45:06,412 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:06" (1/1) ... [2024-10-13 16:45:06,421 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:06" (1/1) ... [2024-10-13 16:45:06,453 INFO L138 Inliner]: procedures = 23, calls = 26, calls flagged for inlining = 10, calls inlined = 12, statements flattened = 181 [2024-10-13 16:45:06,455 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 16:45:06,456 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 16:45:06,456 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 16:45:06,456 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 16:45:06,466 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:06" (1/1) ... [2024-10-13 16:45:06,467 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:06" (1/1) ... [2024-10-13 16:45:06,470 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:06" (1/1) ... [2024-10-13 16:45:06,489 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-10-13 16:45:06,489 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:06" (1/1) ... [2024-10-13 16:45:06,489 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:06" (1/1) ... [2024-10-13 16:45:06,496 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:06" (1/1) ... [2024-10-13 16:45:06,502 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:06" (1/1) ... [2024-10-13 16:45:06,504 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:06" (1/1) ... [2024-10-13 16:45:06,505 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:06" (1/1) ... [2024-10-13 16:45:06,507 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 16:45:06,508 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 16:45:06,508 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 16:45:06,508 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 16:45:06,509 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:06" (1/1) ... [2024-10-13 16:45:06,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:45:06,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:45:06,536 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 16:45:06,539 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 16:45:06,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 16:45:06,580 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 16:45:06,580 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 16:45:06,580 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 16:45:06,580 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 16:45:06,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 16:45:06,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 16:45:06,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 16:45:06,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 16:45:06,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-13 16:45:06,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 16:45:06,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 16:45:06,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 16:45:06,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 16:45:06,583 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 16:45:06,687 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 16:45:06,689 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 16:45:07,037 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 16:45:07,038 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 16:45:07,296 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 16:45:07,297 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-13 16:45:07,298 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:45:07 BoogieIcfgContainer [2024-10-13 16:45:07,298 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 16:45:07,300 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 16:45:07,301 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 16:45:07,304 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 16:45:07,305 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 04:45:06" (1/3) ... [2024-10-13 16:45:07,305 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44f19d9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:45:07, skipping insertion in model container [2024-10-13 16:45:07,307 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:06" (2/3) ... [2024-10-13 16:45:07,307 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44f19d9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:45:07, skipping insertion in model container [2024-10-13 16:45:07,308 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:45:07" (3/3) ... [2024-10-13 16:45:07,309 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-opt-symm.wvr.c [2024-10-13 16:45:07,325 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 16:45:07,325 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-10-13 16:45:07,326 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 16:45:07,381 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-13 16:45:07,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 45 transitions, 104 flow [2024-10-13 16:45:07,439 INFO L124 PetriNetUnfolderBase]: 6/43 cut-off events. [2024-10-13 16:45:07,439 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 16:45:07,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 43 events. 6/43 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 85 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-10-13 16:45:07,443 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 45 transitions, 104 flow [2024-10-13 16:45:07,446 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 42 transitions, 96 flow [2024-10-13 16:45:07,455 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 16:45:07,463 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;@6a628287, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 16:45:07,465 INFO L334 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2024-10-13 16:45:07,472 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 16:45:07,472 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-13 16:45:07,472 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 16:45:07,473 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:07,473 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-13 16:45:07,474 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2024-10-13 16:45:07,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:07,479 INFO L85 PathProgramCache]: Analyzing trace with hash 561233, now seen corresponding path program 1 times [2024-10-13 16:45:07,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:07,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982452363] [2024-10-13 16:45:07,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:07,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:07,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:07,765 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 16:45:07,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:07,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982452363] [2024-10-13 16:45:07,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982452363] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:45:07,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:45:07,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:45:07,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271860667] [2024-10-13 16:45:07,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:45:07,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:45:07,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:07,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:45:07,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:45:07,905 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 45 [2024-10-13 16:45:07,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 42 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 16:45:07,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:07,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 45 [2024-10-13 16:45:07,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:08,083 INFO L124 PetriNetUnfolderBase]: 158/323 cut-off events. [2024-10-13 16:45:08,083 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-10-13 16:45:08,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 610 conditions, 323 events. 158/323 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1284 event pairs, 100 based on Foata normal form. 2/242 useless extension candidates. Maximal degree in co-relation 526. Up to 258 conditions per place. [2024-10-13 16:45:08,088 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 30 selfloop transitions, 7 changer transitions 0/48 dead transitions. [2024-10-13 16:45:08,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 48 transitions, 182 flow [2024-10-13 16:45:08,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:45:08,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:45:08,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2024-10-13 16:45:08,100 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5166666666666667 [2024-10-13 16:45:08,103 INFO L175 Difference]: Start difference. First operand has 43 places, 42 transitions, 96 flow. Second operand 4 states and 93 transitions. [2024-10-13 16:45:08,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 48 transitions, 182 flow [2024-10-13 16:45:08,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 48 transitions, 174 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-13 16:45:08,112 INFO L231 Difference]: Finished difference. Result has 45 places, 48 transitions, 148 flow [2024-10-13 16:45:08,114 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=45, PETRI_TRANSITIONS=48} [2024-10-13 16:45:08,119 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 2 predicate places. [2024-10-13 16:45:08,119 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 48 transitions, 148 flow [2024-10-13 16:45:08,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 16:45:08,120 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:08,120 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-13 16:45:08,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 16:45:08,121 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2024-10-13 16:45:08,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:08,121 INFO L85 PathProgramCache]: Analyzing trace with hash -459628141, now seen corresponding path program 1 times [2024-10-13 16:45:08,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:08,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913234390] [2024-10-13 16:45:08,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:08,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:08,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:08,311 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:45:08,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:08,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913234390] [2024-10-13 16:45:08,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913234390] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:45:08,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902741269] [2024-10-13 16:45:08,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:08,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:45:08,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:45:08,315 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 16:45:08,317 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 16:45:08,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:08,385 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:45:08,389 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:45:08,443 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:45:08,445 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:45:08,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902741269] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:45:08,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:45:08,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-13 16:45:08,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275608142] [2024-10-13 16:45:08,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:45:08,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:45:08,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:08,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:45:08,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-13 16:45:08,473 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 45 [2024-10-13 16:45:08,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 48 transitions, 148 flow. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 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 16:45:08,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:08,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 45 [2024-10-13 16:45:08,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:08,670 INFO L124 PetriNetUnfolderBase]: 158/321 cut-off events. [2024-10-13 16:45:08,670 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-10-13 16:45:08,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 615 conditions, 321 events. 158/321 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1272 event pairs, 100 based on Foata normal form. 2/243 useless extension candidates. Maximal degree in co-relation 565. Up to 248 conditions per place. [2024-10-13 16:45:08,674 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 23 selfloop transitions, 12 changer transitions 0/46 dead transitions. [2024-10-13 16:45:08,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 46 transitions, 210 flow [2024-10-13 16:45:08,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 16:45:08,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 16:45:08,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 115 transitions. [2024-10-13 16:45:08,678 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2024-10-13 16:45:08,678 INFO L175 Difference]: Start difference. First operand has 45 places, 48 transitions, 148 flow. Second operand 6 states and 115 transitions. [2024-10-13 16:45:08,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 46 transitions, 210 flow [2024-10-13 16:45:08,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 46 transitions, 210 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 16:45:08,683 INFO L231 Difference]: Finished difference. Result has 48 places, 46 transitions, 164 flow [2024-10-13 16:45:08,683 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=164, PETRI_PLACES=48, PETRI_TRANSITIONS=46} [2024-10-13 16:45:08,684 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 5 predicate places. [2024-10-13 16:45:08,685 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 46 transitions, 164 flow [2024-10-13 16:45:08,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 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 16:45:08,685 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:08,685 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-13 16:45:08,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-13 16:45:08,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:45:08,887 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2024-10-13 16:45:08,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:08,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1363569930, now seen corresponding path program 1 times [2024-10-13 16:45:08,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:08,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168891035] [2024-10-13 16:45:08,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:08,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:08,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:09,003 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 16:45:09,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:09,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168891035] [2024-10-13 16:45:09,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168891035] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:45:09,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274714206] [2024-10-13 16:45:09,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:09,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:45:09,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:45:09,007 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 16:45:09,008 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 16:45:09,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:09,075 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:45:09,076 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:45:09,101 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 16:45:09,101 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:45:09,144 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 16:45:09,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274714206] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:45:09,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:45:09,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-13 16:45:09,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787808848] [2024-10-13 16:45:09,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:45:09,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 16:45:09,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:09,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 16:45:09,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-13 16:45:09,180 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 45 [2024-10-13 16:45:09,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 46 transitions, 164 flow. Second operand has 12 states, 12 states have (on average 14.083333333333334) internal successors, (169), 12 states have internal predecessors, (169), 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 16:45:09,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:09,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 45 [2024-10-13 16:45:09,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:09,413 INFO L124 PetriNetUnfolderBase]: 164/345 cut-off events. [2024-10-13 16:45:09,414 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2024-10-13 16:45:09,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 709 conditions, 345 events. 164/345 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1439 event pairs, 100 based on Foata normal form. 6/270 useless extension candidates. Maximal degree in co-relation 567. Up to 259 conditions per place. [2024-10-13 16:45:09,419 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 28 selfloop transitions, 25 changer transitions 0/64 dead transitions. [2024-10-13 16:45:09,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 64 transitions, 384 flow [2024-10-13 16:45:09,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 16:45:09,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 16:45:09,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-10-13 16:45:09,422 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42 [2024-10-13 16:45:09,422 INFO L175 Difference]: Start difference. First operand has 48 places, 46 transitions, 164 flow. Second operand 10 states and 189 transitions. [2024-10-13 16:45:09,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 64 transitions, 384 flow [2024-10-13 16:45:09,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 64 transitions, 326 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-10-13 16:45:09,427 INFO L231 Difference]: Finished difference. Result has 55 places, 64 transitions, 304 flow [2024-10-13 16:45:09,427 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=304, PETRI_PLACES=55, PETRI_TRANSITIONS=64} [2024-10-13 16:45:09,430 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 12 predicate places. [2024-10-13 16:45:09,430 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 64 transitions, 304 flow [2024-10-13 16:45:09,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.083333333333334) internal successors, (169), 12 states have internal predecessors, (169), 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 16:45:09,431 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:09,431 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:09,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-13 16:45:09,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-10-13 16:45:09,632 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2024-10-13 16:45:09,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:09,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1658806369, now seen corresponding path program 1 times [2024-10-13 16:45:09,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:09,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018782270] [2024-10-13 16:45:09,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:09,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:09,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:09,743 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 16:45:09,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:09,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018782270] [2024-10-13 16:45:09,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018782270] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:45:09,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:45:09,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:45:09,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795631901] [2024-10-13 16:45:09,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:45:09,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:45:09,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:09,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:45:09,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:45:09,753 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 45 [2024-10-13 16:45:09,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 64 transitions, 304 flow. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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 16:45:09,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:09,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 45 [2024-10-13 16:45:09,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:09,913 INFO L124 PetriNetUnfolderBase]: 339/614 cut-off events. [2024-10-13 16:45:09,913 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2024-10-13 16:45:09,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1276 conditions, 614 events. 339/614 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2556 event pairs, 136 based on Foata normal form. 14/494 useless extension candidates. Maximal degree in co-relation 1209. Up to 349 conditions per place. [2024-10-13 16:45:09,921 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 78 selfloop transitions, 3 changer transitions 0/92 dead transitions. [2024-10-13 16:45:09,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 92 transitions, 526 flow [2024-10-13 16:45:09,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:45:09,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:45:09,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2024-10-13 16:45:09,925 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6611111111111111 [2024-10-13 16:45:09,925 INFO L175 Difference]: Start difference. First operand has 55 places, 64 transitions, 304 flow. Second operand 4 states and 119 transitions. [2024-10-13 16:45:09,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 92 transitions, 526 flow [2024-10-13 16:45:09,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 92 transitions, 502 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-10-13 16:45:09,932 INFO L231 Difference]: Finished difference. Result has 58 places, 66 transitions, 302 flow [2024-10-13 16:45:09,932 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=302, PETRI_PLACES=58, PETRI_TRANSITIONS=66} [2024-10-13 16:45:09,934 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 15 predicate places. [2024-10-13 16:45:09,934 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 66 transitions, 302 flow [2024-10-13 16:45:09,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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 16:45:09,935 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:09,935 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:09,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 16:45:09,935 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2024-10-13 16:45:09,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:09,936 INFO L85 PathProgramCache]: Analyzing trace with hash 642390681, now seen corresponding path program 1 times [2024-10-13 16:45:09,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:09,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036825107] [2024-10-13 16:45:09,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:09,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:09,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:10,009 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 16:45:10,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:10,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036825107] [2024-10-13 16:45:10,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036825107] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:45:10,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:45:10,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:45:10,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538346724] [2024-10-13 16:45:10,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:45:10,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:45:10,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:10,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:45:10,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:45:10,018 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 45 [2024-10-13 16:45:10,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 66 transitions, 302 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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 16:45:10,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:10,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 45 [2024-10-13 16:45:10,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:10,211 INFO L124 PetriNetUnfolderBase]: 592/1047 cut-off events. [2024-10-13 16:45:10,211 INFO L125 PetriNetUnfolderBase]: For 309/337 co-relation queries the response was YES. [2024-10-13 16:45:10,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2300 conditions, 1047 events. 592/1047 cut-off events. For 309/337 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4699 event pairs, 261 based on Foata normal form. 24/889 useless extension candidates. Maximal degree in co-relation 2233. Up to 611 conditions per place. [2024-10-13 16:45:10,218 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 81 selfloop transitions, 3 changer transitions 0/95 dead transitions. [2024-10-13 16:45:10,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 95 transitions, 559 flow [2024-10-13 16:45:10,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:45:10,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:45:10,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-10-13 16:45:10,220 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6444444444444445 [2024-10-13 16:45:10,220 INFO L175 Difference]: Start difference. First operand has 58 places, 66 transitions, 302 flow. Second operand 4 states and 116 transitions. [2024-10-13 16:45:10,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 95 transitions, 559 flow [2024-10-13 16:45:10,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 95 transitions, 553 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:45:10,223 INFO L231 Difference]: Finished difference. Result has 62 places, 68 transitions, 322 flow [2024-10-13 16:45:10,224 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=322, PETRI_PLACES=62, PETRI_TRANSITIONS=68} [2024-10-13 16:45:10,224 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 19 predicate places. [2024-10-13 16:45:10,224 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 68 transitions, 322 flow [2024-10-13 16:45:10,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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 16:45:10,225 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:10,225 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:10,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 16:45:10,225 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2024-10-13 16:45:10,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:10,225 INFO L85 PathProgramCache]: Analyzing trace with hash 714452349, now seen corresponding path program 1 times [2024-10-13 16:45:10,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:10,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004223685] [2024-10-13 16:45:10,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:10,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:10,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:10,300 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 16:45:10,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:10,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004223685] [2024-10-13 16:45:10,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004223685] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:45:10,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:45:10,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:45:10,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175300231] [2024-10-13 16:45:10,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:45:10,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:45:10,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:10,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:45:10,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 16:45:10,302 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-10-13 16:45:10,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 68 transitions, 322 flow. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 16:45:10,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:10,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-10-13 16:45:10,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:10,445 INFO L124 PetriNetUnfolderBase]: 512/1008 cut-off events. [2024-10-13 16:45:10,445 INFO L125 PetriNetUnfolderBase]: For 376/378 co-relation queries the response was YES. [2024-10-13 16:45:10,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2329 conditions, 1008 events. 512/1008 cut-off events. For 376/378 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4890 event pairs, 360 based on Foata normal form. 2/906 useless extension candidates. Maximal degree in co-relation 2260. Up to 817 conditions per place. [2024-10-13 16:45:10,453 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 46 selfloop transitions, 7 changer transitions 0/66 dead transitions. [2024-10-13 16:45:10,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 66 transitions, 419 flow [2024-10-13 16:45:10,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:45:10,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:45:10,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2024-10-13 16:45:10,454 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6222222222222222 [2024-10-13 16:45:10,455 INFO L175 Difference]: Start difference. First operand has 62 places, 68 transitions, 322 flow. Second operand 3 states and 84 transitions. [2024-10-13 16:45:10,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 66 transitions, 419 flow [2024-10-13 16:45:10,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 66 transitions, 410 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 16:45:10,461 INFO L231 Difference]: Finished difference. Result has 62 places, 66 transitions, 318 flow [2024-10-13 16:45:10,461 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=318, PETRI_PLACES=62, PETRI_TRANSITIONS=66} [2024-10-13 16:45:10,462 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 19 predicate places. [2024-10-13 16:45:10,462 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 66 transitions, 318 flow [2024-10-13 16:45:10,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 16:45:10,462 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:10,462 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-13 16:45:10,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 16:45:10,462 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2024-10-13 16:45:10,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:10,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1167751800, now seen corresponding path program 2 times [2024-10-13 16:45:10,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:10,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356769732] [2024-10-13 16:45:10,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:10,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:10,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:10,640 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 16:45:10,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:10,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356769732] [2024-10-13 16:45:10,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356769732] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:45:10,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899794009] [2024-10-13 16:45:10,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:45:10,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:45:10,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:45:10,643 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 16:45:10,644 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 16:45:10,705 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 16:45:10,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:45:10,706 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:45:10,707 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:45:10,751 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 16:45:10,751 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:45:10,809 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 16:45:10,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899794009] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:45:10,810 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:45:10,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 13 [2024-10-13 16:45:10,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089289906] [2024-10-13 16:45:10,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:45:10,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 16:45:10,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:10,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 16:45:10,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-10-13 16:45:10,846 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 45 [2024-10-13 16:45:10,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 66 transitions, 318 flow. Second operand has 15 states, 15 states have (on average 14.333333333333334) internal successors, (215), 15 states have internal predecessors, (215), 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 16:45:10,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:10,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 45 [2024-10-13 16:45:10,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:11,172 INFO L124 PetriNetUnfolderBase]: 514/1010 cut-off events. [2024-10-13 16:45:11,172 INFO L125 PetriNetUnfolderBase]: For 340/342 co-relation queries the response was YES. [2024-10-13 16:45:11,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2312 conditions, 1010 events. 514/1010 cut-off events. For 340/342 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4896 event pairs, 360 based on Foata normal form. 2/908 useless extension candidates. Maximal degree in co-relation 2238. Up to 800 conditions per place. [2024-10-13 16:45:11,179 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 24 selfloop transitions, 33 changer transitions 0/68 dead transitions. [2024-10-13 16:45:11,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 68 transitions, 436 flow [2024-10-13 16:45:11,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-13 16:45:11,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-13 16:45:11,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 224 transitions. [2024-10-13 16:45:11,182 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38290598290598293 [2024-10-13 16:45:11,182 INFO L175 Difference]: Start difference. First operand has 62 places, 66 transitions, 318 flow. Second operand 13 states and 224 transitions. [2024-10-13 16:45:11,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 68 transitions, 436 flow [2024-10-13 16:45:11,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 68 transitions, 400 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-10-13 16:45:11,186 INFO L231 Difference]: Finished difference. Result has 66 places, 68 transitions, 352 flow [2024-10-13 16:45:11,186 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=352, PETRI_PLACES=66, PETRI_TRANSITIONS=68} [2024-10-13 16:45:11,188 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 23 predicate places. [2024-10-13 16:45:11,188 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 68 transitions, 352 flow [2024-10-13 16:45:11,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 14.333333333333334) internal successors, (215), 15 states have internal predecessors, (215), 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 16:45:11,189 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:11,189 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:11,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-13 16:45:11,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:45:11,390 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2024-10-13 16:45:11,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:11,391 INFO L85 PathProgramCache]: Analyzing trace with hash -823686847, now seen corresponding path program 1 times [2024-10-13 16:45:11,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:11,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875931201] [2024-10-13 16:45:11,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:11,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:11,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:11,497 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-13 16:45:11,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:11,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875931201] [2024-10-13 16:45:11,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875931201] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:45:11,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068642641] [2024-10-13 16:45:11,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:11,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:45:11,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:45:11,500 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 16:45:11,501 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 16:45:11,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:11,579 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 16:45:11,581 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:45:11,628 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-13 16:45:11,628 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:45:11,659 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-13 16:45:11,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068642641] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:45:11,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:45:11,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-13 16:45:11,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55117864] [2024-10-13 16:45:11,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:45:11,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 16:45:11,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:11,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 16:45:11,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-10-13 16:45:11,688 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 45 [2024-10-13 16:45:11,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 68 transitions, 352 flow. Second operand has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:11,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:11,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 45 [2024-10-13 16:45:11,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:11,905 INFO L124 PetriNetUnfolderBase]: 510/1006 cut-off events. [2024-10-13 16:45:11,906 INFO L125 PetriNetUnfolderBase]: For 338/340 co-relation queries the response was YES. [2024-10-13 16:45:11,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2307 conditions, 1006 events. 510/1006 cut-off events. For 338/340 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4773 event pairs, 360 based on Foata normal form. 0/898 useless extension candidates. Maximal degree in co-relation 2153. Up to 804 conditions per place. [2024-10-13 16:45:11,912 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 29 selfloop transitions, 24 changer transitions 0/64 dead transitions. [2024-10-13 16:45:11,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 64 transitions, 430 flow [2024-10-13 16:45:11,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 16:45:11,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 16:45:11,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-10-13 16:45:11,913 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41904761904761906 [2024-10-13 16:45:11,913 INFO L175 Difference]: Start difference. First operand has 66 places, 68 transitions, 352 flow. Second operand 7 states and 132 transitions. [2024-10-13 16:45:11,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 64 transitions, 430 flow [2024-10-13 16:45:11,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 64 transitions, 324 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-10-13 16:45:11,916 INFO L231 Difference]: Finished difference. Result has 60 places, 64 transitions, 266 flow [2024-10-13 16:45:11,916 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=266, PETRI_PLACES=60, PETRI_TRANSITIONS=64} [2024-10-13 16:45:11,918 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 17 predicate places. [2024-10-13 16:45:11,918 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 64 transitions, 266 flow [2024-10-13 16:45:11,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:11,919 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:11,919 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:11,937 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 16:45:12,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:45:12,121 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2024-10-13 16:45:12,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:12,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1530513855, now seen corresponding path program 2 times [2024-10-13 16:45:12,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:12,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169506308] [2024-10-13 16:45:12,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:12,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:12,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:12,298 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-13 16:45:12,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:12,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169506308] [2024-10-13 16:45:12,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169506308] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:45:12,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326348519] [2024-10-13 16:45:12,299 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:45:12,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:45:12,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:45:12,302 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 16:45:12,304 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 16:45:12,393 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 16:45:12,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:45:12,394 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 16:45:12,396 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:45:12,514 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-13 16:45:12,515 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:45:12,593 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-13 16:45:12,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326348519] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:45:12,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:45:12,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-10-13 16:45:12,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200844523] [2024-10-13 16:45:12,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:45:12,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-13 16:45:12,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:12,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-13 16:45:12,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2024-10-13 16:45:12,621 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 45 [2024-10-13 16:45:12,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 64 transitions, 266 flow. Second operand has 18 states, 18 states have (on average 14.555555555555555) internal successors, (262), 18 states have internal predecessors, (262), 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 16:45:12,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:12,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 45 [2024-10-13 16:45:12,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:12,879 INFO L124 PetriNetUnfolderBase]: 506/1002 cut-off events. [2024-10-13 16:45:12,879 INFO L125 PetriNetUnfolderBase]: For 314/316 co-relation queries the response was YES. [2024-10-13 16:45:12,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2266 conditions, 1002 events. 506/1002 cut-off events. For 314/316 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4732 event pairs, 360 based on Foata normal form. 2/901 useless extension candidates. Maximal degree in co-relation 2155. Up to 798 conditions per place. [2024-10-13 16:45:12,884 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 27 selfloop transitions, 22 changer transitions 0/60 dead transitions. [2024-10-13 16:45:12,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 60 transitions, 346 flow [2024-10-13 16:45:12,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 16:45:12,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-13 16:45:12,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-10-13 16:45:12,886 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3878787878787879 [2024-10-13 16:45:12,886 INFO L175 Difference]: Start difference. First operand has 60 places, 64 transitions, 266 flow. Second operand 11 states and 192 transitions. [2024-10-13 16:45:12,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 60 transitions, 346 flow [2024-10-13 16:45:12,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 60 transitions, 302 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-13 16:45:12,888 INFO L231 Difference]: Finished difference. Result has 64 places, 60 transitions, 248 flow [2024-10-13 16:45:12,888 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=248, PETRI_PLACES=64, PETRI_TRANSITIONS=60} [2024-10-13 16:45:12,889 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 21 predicate places. [2024-10-13 16:45:12,889 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 60 transitions, 248 flow [2024-10-13 16:45:12,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 14.555555555555555) internal successors, (262), 18 states have internal predecessors, (262), 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 16:45:12,889 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:12,890 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:12,907 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-13 16:45:13,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:45:13,091 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2024-10-13 16:45:13,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:13,091 INFO L85 PathProgramCache]: Analyzing trace with hash 222708545, now seen corresponding path program 3 times [2024-10-13 16:45:13,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:13,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780384467] [2024-10-13 16:45:13,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:13,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:13,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:13,203 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-13 16:45:13,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:13,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780384467] [2024-10-13 16:45:13,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780384467] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:45:13,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510492336] [2024-10-13 16:45:13,204 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 16:45:13,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:45:13,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:45:13,206 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 16:45:13,208 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 16:45:13,302 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-13 16:45:13,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:45:13,303 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 16:45:13,305 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:45:13,336 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-13 16:45:13,337 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:45:13,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510492336] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:45:13,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:45:13,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-10-13 16:45:13,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680674476] [2024-10-13 16:45:13,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:45:13,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:45:13,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:13,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:45:13,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-13 16:45:13,349 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 45 [2024-10-13 16:45:13,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 60 transitions, 248 flow. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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 16:45:13,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:13,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 45 [2024-10-13 16:45:13,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:13,533 INFO L124 PetriNetUnfolderBase]: 623/1038 cut-off events. [2024-10-13 16:45:13,534 INFO L125 PetriNetUnfolderBase]: For 288/336 co-relation queries the response was YES. [2024-10-13 16:45:13,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2466 conditions, 1038 events. 623/1038 cut-off events. For 288/336 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 4428 event pairs, 26 based on Foata normal form. 24/925 useless extension candidates. Maximal degree in co-relation 2355. Up to 628 conditions per place. [2024-10-13 16:45:13,538 INFO L140 encePairwiseOnDemand]: 41/45 looper letters, 70 selfloop transitions, 5 changer transitions 0/83 dead transitions. [2024-10-13 16:45:13,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 83 transitions, 468 flow [2024-10-13 16:45:13,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:45:13,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:45:13,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 106 transitions. [2024-10-13 16:45:13,540 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5888888888888889 [2024-10-13 16:45:13,540 INFO L175 Difference]: Start difference. First operand has 64 places, 60 transitions, 248 flow. Second operand 4 states and 106 transitions. [2024-10-13 16:45:13,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 83 transitions, 468 flow [2024-10-13 16:45:13,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 83 transitions, 424 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-10-13 16:45:13,542 INFO L231 Difference]: Finished difference. Result has 56 places, 59 transitions, 210 flow [2024-10-13 16:45:13,542 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=210, PETRI_PLACES=56, PETRI_TRANSITIONS=59} [2024-10-13 16:45:13,543 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 13 predicate places. [2024-10-13 16:45:13,543 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 59 transitions, 210 flow [2024-10-13 16:45:13,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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 16:45:13,543 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:13,543 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:13,565 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 16:45:13,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:45:13,744 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2024-10-13 16:45:13,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:13,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1685969119, now seen corresponding path program 1 times [2024-10-13 16:45:13,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:13,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248420535] [2024-10-13 16:45:13,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:13,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:13,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:13,815 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-10-13 16:45:13,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:13,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248420535] [2024-10-13 16:45:13,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248420535] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:45:13,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:45:13,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:45:13,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681106408] [2024-10-13 16:45:13,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:45:13,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:45:13,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:13,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:45:13,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:45:13,823 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 45 [2024-10-13 16:45:13,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 59 transitions, 210 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 16:45:13,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:13,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 45 [2024-10-13 16:45:13,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:13,976 INFO L124 PetriNetUnfolderBase]: 573/1051 cut-off events. [2024-10-13 16:45:13,976 INFO L125 PetriNetUnfolderBase]: For 534/559 co-relation queries the response was YES. [2024-10-13 16:45:13,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2497 conditions, 1051 events. 573/1051 cut-off events. For 534/559 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4949 event pairs, 119 based on Foata normal form. 24/959 useless extension candidates. Maximal degree in co-relation 1157. Up to 517 conditions per place. [2024-10-13 16:45:13,982 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 72 selfloop transitions, 6 changer transitions 0/87 dead transitions. [2024-10-13 16:45:13,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 87 transitions, 448 flow [2024-10-13 16:45:13,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:45:13,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:45:13,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2024-10-13 16:45:13,984 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6277777777777778 [2024-10-13 16:45:13,984 INFO L175 Difference]: Start difference. First operand has 56 places, 59 transitions, 210 flow. Second operand 4 states and 113 transitions. [2024-10-13 16:45:13,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 87 transitions, 448 flow [2024-10-13 16:45:13,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 87 transitions, 438 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:45:13,986 INFO L231 Difference]: Finished difference. Result has 56 places, 59 transitions, 216 flow [2024-10-13 16:45:13,987 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=216, PETRI_PLACES=56, PETRI_TRANSITIONS=59} [2024-10-13 16:45:13,987 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 13 predicate places. [2024-10-13 16:45:13,987 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 59 transitions, 216 flow [2024-10-13 16:45:13,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 16:45:13,987 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:13,988 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:13,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-13 16:45:13,988 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2024-10-13 16:45:13,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:13,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1645178680, now seen corresponding path program 1 times [2024-10-13 16:45:13,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:13,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487803700] [2024-10-13 16:45:13,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:13,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:14,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:14,109 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-13 16:45:14,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:14,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487803700] [2024-10-13 16:45:14,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487803700] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:45:14,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575143226] [2024-10-13 16:45:14,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:14,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:45:14,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:45:14,112 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 16:45:14,114 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 16:45:14,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:14,214 INFO L255 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:45:14,216 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:45:14,247 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-13 16:45:14,247 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:45:14,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575143226] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:45:14,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:45:14,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-13 16:45:14,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420768388] [2024-10-13 16:45:14,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:45:14,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:45:14,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:14,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:45:14,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-13 16:45:14,256 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 45 [2024-10-13 16:45:14,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 59 transitions, 216 flow. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 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 16:45:14,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:14,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 45 [2024-10-13 16:45:14,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:14,477 INFO L124 PetriNetUnfolderBase]: 617/1114 cut-off events. [2024-10-13 16:45:14,478 INFO L125 PetriNetUnfolderBase]: For 804/804 co-relation queries the response was YES. [2024-10-13 16:45:14,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2772 conditions, 1114 events. 617/1114 cut-off events. For 804/804 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 4866 event pairs, 36 based on Foata normal form. 29/1048 useless extension candidates. Maximal degree in co-relation 1170. Up to 353 conditions per place. [2024-10-13 16:45:14,483 INFO L140 encePairwiseOnDemand]: 41/45 looper letters, 99 selfloop transitions, 5 changer transitions 0/111 dead transitions. [2024-10-13 16:45:14,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 111 transitions, 651 flow [2024-10-13 16:45:14,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 16:45:14,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 16:45:14,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 162 transitions. [2024-10-13 16:45:14,485 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-10-13 16:45:14,485 INFO L175 Difference]: Start difference. First operand has 56 places, 59 transitions, 216 flow. Second operand 6 states and 162 transitions. [2024-10-13 16:45:14,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 111 transitions, 651 flow [2024-10-13 16:45:14,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 111 transitions, 611 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 16:45:14,488 INFO L231 Difference]: Finished difference. Result has 58 places, 58 transitions, 214 flow [2024-10-13 16:45:14,488 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=214, PETRI_PLACES=58, PETRI_TRANSITIONS=58} [2024-10-13 16:45:14,489 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 15 predicate places. [2024-10-13 16:45:14,489 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 58 transitions, 214 flow [2024-10-13 16:45:14,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 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 16:45:14,490 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:14,490 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:14,507 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-13 16:45:14,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:45:14,690 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2024-10-13 16:45:14,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:14,691 INFO L85 PathProgramCache]: Analyzing trace with hash -539067884, now seen corresponding path program 1 times [2024-10-13 16:45:14,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:14,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575398387] [2024-10-13 16:45:14,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:14,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:14,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:14,778 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-10-13 16:45:14,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:14,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575398387] [2024-10-13 16:45:14,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575398387] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:45:14,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:45:14,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:45:14,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464347584] [2024-10-13 16:45:14,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:45:14,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:45:14,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:14,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:45:14,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:45:14,786 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 45 [2024-10-13 16:45:14,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 58 transitions, 214 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 16:45:14,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:14,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 45 [2024-10-13 16:45:14,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:14,972 INFO L124 PetriNetUnfolderBase]: 632/1174 cut-off events. [2024-10-13 16:45:14,972 INFO L125 PetriNetUnfolderBase]: For 843/843 co-relation queries the response was YES. [2024-10-13 16:45:14,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2914 conditions, 1174 events. 632/1174 cut-off events. For 843/843 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5460 event pairs, 156 based on Foata normal form. 29/1134 useless extension candidates. Maximal degree in co-relation 1151. Up to 546 conditions per place. [2024-10-13 16:45:14,978 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 72 selfloop transitions, 6 changer transitions 0/85 dead transitions. [2024-10-13 16:45:14,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 85 transitions, 469 flow [2024-10-13 16:45:14,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:45:14,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:45:14,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2024-10-13 16:45:14,979 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-10-13 16:45:14,979 INFO L175 Difference]: Start difference. First operand has 58 places, 58 transitions, 214 flow. Second operand 4 states and 110 transitions. [2024-10-13 16:45:14,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 85 transitions, 469 flow [2024-10-13 16:45:14,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 85 transitions, 456 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-10-13 16:45:14,983 INFO L231 Difference]: Finished difference. Result has 56 places, 58 transitions, 217 flow [2024-10-13 16:45:14,983 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=217, PETRI_PLACES=56, PETRI_TRANSITIONS=58} [2024-10-13 16:45:14,983 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 13 predicate places. [2024-10-13 16:45:14,984 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 58 transitions, 217 flow [2024-10-13 16:45:14,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 16:45:14,984 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:14,984 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:14,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-13 16:45:14,984 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2024-10-13 16:45:14,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:14,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1713600834, now seen corresponding path program 1 times [2024-10-13 16:45:14,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:14,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733307914] [2024-10-13 16:45:14,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:14,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:15,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:15,057 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-13 16:45:15,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:15,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733307914] [2024-10-13 16:45:15,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733307914] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:45:15,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:45:15,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 16:45:15,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717458225] [2024-10-13 16:45:15,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:45:15,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:45:15,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:15,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:45:15,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:45:15,059 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-10-13 16:45:15,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 58 transitions, 217 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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 16:45:15,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:15,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-10-13 16:45:15,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:15,227 INFO L124 PetriNetUnfolderBase]: 699/1325 cut-off events. [2024-10-13 16:45:15,227 INFO L125 PetriNetUnfolderBase]: For 956/956 co-relation queries the response was YES. [2024-10-13 16:45:15,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3346 conditions, 1325 events. 699/1325 cut-off events. For 956/956 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 6829 event pairs, 308 based on Foata normal form. 5/1316 useless extension candidates. Maximal degree in co-relation 1466. Up to 631 conditions per place. [2024-10-13 16:45:15,234 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 77 selfloop transitions, 5 changer transitions 2/91 dead transitions. [2024-10-13 16:45:15,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 91 transitions, 507 flow [2024-10-13 16:45:15,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:45:15,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:45:15,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 143 transitions. [2024-10-13 16:45:15,236 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6355555555555555 [2024-10-13 16:45:15,236 INFO L175 Difference]: Start difference. First operand has 56 places, 58 transitions, 217 flow. Second operand 5 states and 143 transitions. [2024-10-13 16:45:15,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 91 transitions, 507 flow [2024-10-13 16:45:15,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 91 transitions, 484 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 16:45:15,239 INFO L231 Difference]: Finished difference. Result has 60 places, 59 transitions, 229 flow [2024-10-13 16:45:15,240 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=229, PETRI_PLACES=60, PETRI_TRANSITIONS=59} [2024-10-13 16:45:15,240 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 17 predicate places. [2024-10-13 16:45:15,241 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 59 transitions, 229 flow [2024-10-13 16:45:15,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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 16:45:15,242 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:15,242 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:15,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-13 16:45:15,242 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2024-10-13 16:45:15,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:15,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1376269542, now seen corresponding path program 2 times [2024-10-13 16:45:15,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:15,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801732583] [2024-10-13 16:45:15,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:15,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:15,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:15,332 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-13 16:45:15,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:15,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801732583] [2024-10-13 16:45:15,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801732583] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:45:15,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:45:15,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 16:45:15,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320603315] [2024-10-13 16:45:15,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:45:15,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:45:15,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:15,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:45:15,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:45:15,334 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-10-13 16:45:15,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 59 transitions, 229 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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 16:45:15,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:15,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-10-13 16:45:15,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:15,541 INFO L124 PetriNetUnfolderBase]: 759/1470 cut-off events. [2024-10-13 16:45:15,541 INFO L125 PetriNetUnfolderBase]: For 1274/1274 co-relation queries the response was YES. [2024-10-13 16:45:15,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3750 conditions, 1470 events. 759/1470 cut-off events. For 1274/1274 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7791 event pairs, 386 based on Foata normal form. 4/1454 useless extension candidates. Maximal degree in co-relation 1650. Up to 735 conditions per place. [2024-10-13 16:45:15,549 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 78 selfloop transitions, 5 changer transitions 0/90 dead transitions. [2024-10-13 16:45:15,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 90 transitions, 522 flow [2024-10-13 16:45:15,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:45:15,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:45:15,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 139 transitions. [2024-10-13 16:45:15,551 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6177777777777778 [2024-10-13 16:45:15,551 INFO L175 Difference]: Start difference. First operand has 60 places, 59 transitions, 229 flow. Second operand 5 states and 139 transitions. [2024-10-13 16:45:15,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 90 transitions, 522 flow [2024-10-13 16:45:15,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 90 transitions, 513 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 16:45:15,556 INFO L231 Difference]: Finished difference. Result has 64 places, 60 transitions, 243 flow [2024-10-13 16:45:15,557 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=243, PETRI_PLACES=64, PETRI_TRANSITIONS=60} [2024-10-13 16:45:15,557 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 21 predicate places. [2024-10-13 16:45:15,557 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 60 transitions, 243 flow [2024-10-13 16:45:15,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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 16:45:15,557 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:15,557 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:15,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-13 16:45:15,558 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2024-10-13 16:45:15,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:15,558 INFO L85 PathProgramCache]: Analyzing trace with hash 218397586, now seen corresponding path program 3 times [2024-10-13 16:45:15,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:15,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795346141] [2024-10-13 16:45:15,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:15,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:15,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:15,645 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-13 16:45:15,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:15,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795346141] [2024-10-13 16:45:15,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795346141] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:45:15,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:45:15,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 16:45:15,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894389098] [2024-10-13 16:45:15,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:45:15,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:45:15,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:15,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:45:15,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 16:45:15,650 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 45 [2024-10-13 16:45:15,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 60 transitions, 243 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 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 16:45:15,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:15,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 45 [2024-10-13 16:45:15,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:15,814 INFO L124 PetriNetUnfolderBase]: 759/1451 cut-off events. [2024-10-13 16:45:15,814 INFO L125 PetriNetUnfolderBase]: For 1615/1615 co-relation queries the response was YES. [2024-10-13 16:45:15,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3944 conditions, 1451 events. 759/1451 cut-off events. For 1615/1615 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7609 event pairs, 503 based on Foata normal form. 16/1460 useless extension candidates. Maximal degree in co-relation 3099. Up to 998 conditions per place. [2024-10-13 16:45:15,821 INFO L140 encePairwiseOnDemand]: 41/45 looper letters, 64 selfloop transitions, 2 changer transitions 4/75 dead transitions. [2024-10-13 16:45:15,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 75 transitions, 449 flow [2024-10-13 16:45:15,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:45:15,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:45:15,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2024-10-13 16:45:15,822 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6444444444444445 [2024-10-13 16:45:15,822 INFO L175 Difference]: Start difference. First operand has 64 places, 60 transitions, 243 flow. Second operand 3 states and 87 transitions. [2024-10-13 16:45:15,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 75 transitions, 449 flow [2024-10-13 16:45:15,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 75 transitions, 443 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 16:45:15,825 INFO L231 Difference]: Finished difference. Result has 65 places, 58 transitions, 237 flow [2024-10-13 16:45:15,825 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=237, PETRI_PLACES=65, PETRI_TRANSITIONS=58} [2024-10-13 16:45:15,826 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 22 predicate places. [2024-10-13 16:45:15,826 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 58 transitions, 237 flow [2024-10-13 16:45:15,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 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 16:45:15,826 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:15,826 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:15,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-13 16:45:15,826 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2024-10-13 16:45:15,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:15,827 INFO L85 PathProgramCache]: Analyzing trace with hash 2114193611, now seen corresponding path program 1 times [2024-10-13 16:45:15,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:15,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473392616] [2024-10-13 16:45:15,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:15,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:15,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:15,905 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-13 16:45:15,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:15,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473392616] [2024-10-13 16:45:15,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473392616] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:45:15,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:45:15,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 16:45:15,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904822612] [2024-10-13 16:45:15,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:45:15,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:45:15,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:15,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:45:15,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:45:15,907 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-10-13 16:45:15,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 58 transitions, 237 flow. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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 16:45:15,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:15,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-10-13 16:45:15,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:16,068 INFO L124 PetriNetUnfolderBase]: 597/1150 cut-off events. [2024-10-13 16:45:16,068 INFO L125 PetriNetUnfolderBase]: For 1274/1274 co-relation queries the response was YES. [2024-10-13 16:45:16,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3283 conditions, 1150 events. 597/1150 cut-off events. For 1274/1274 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5868 event pairs, 261 based on Foata normal form. 20/1164 useless extension candidates. Maximal degree in co-relation 2207. Up to 547 conditions per place. [2024-10-13 16:45:16,074 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 79 selfloop transitions, 4 changer transitions 0/90 dead transitions. [2024-10-13 16:45:16,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 90 transitions, 531 flow [2024-10-13 16:45:16,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:45:16,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:45:16,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2024-10-13 16:45:16,075 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6944444444444444 [2024-10-13 16:45:16,075 INFO L175 Difference]: Start difference. First operand has 65 places, 58 transitions, 237 flow. Second operand 4 states and 125 transitions. [2024-10-13 16:45:16,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 90 transitions, 531 flow [2024-10-13 16:45:16,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 90 transitions, 501 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-10-13 16:45:16,080 INFO L231 Difference]: Finished difference. Result has 63 places, 60 transitions, 252 flow [2024-10-13 16:45:16,080 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=252, PETRI_PLACES=63, PETRI_TRANSITIONS=60} [2024-10-13 16:45:16,080 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 20 predicate places. [2024-10-13 16:45:16,080 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 60 transitions, 252 flow [2024-10-13 16:45:16,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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 16:45:16,081 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:16,081 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:16,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-13 16:45:16,081 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2024-10-13 16:45:16,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:16,081 INFO L85 PathProgramCache]: Analyzing trace with hash -996296843, now seen corresponding path program 2 times [2024-10-13 16:45:16,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:16,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530533901] [2024-10-13 16:45:16,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:16,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:16,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:16,153 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-13 16:45:16,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:16,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530533901] [2024-10-13 16:45:16,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530533901] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:45:16,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:45:16,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 16:45:16,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397104657] [2024-10-13 16:45:16,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:45:16,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:45:16,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:16,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:45:16,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:45:16,155 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-10-13 16:45:16,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 60 transitions, 252 flow. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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 16:45:16,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:16,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-10-13 16:45:16,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:16,323 INFO L124 PetriNetUnfolderBase]: 657/1274 cut-off events. [2024-10-13 16:45:16,323 INFO L125 PetriNetUnfolderBase]: For 1693/1693 co-relation queries the response was YES. [2024-10-13 16:45:16,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3563 conditions, 1274 events. 657/1274 cut-off events. For 1693/1693 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 6474 event pairs, 266 based on Foata normal form. 20/1280 useless extension candidates. Maximal degree in co-relation 1586. Up to 829 conditions per place. [2024-10-13 16:45:16,330 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 68 selfloop transitions, 5 changer transitions 3/83 dead transitions. [2024-10-13 16:45:16,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 83 transitions, 505 flow [2024-10-13 16:45:16,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:45:16,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:45:16,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2024-10-13 16:45:16,331 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-10-13 16:45:16,331 INFO L175 Difference]: Start difference. First operand has 63 places, 60 transitions, 252 flow. Second operand 4 states and 117 transitions. [2024-10-13 16:45:16,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 83 transitions, 505 flow [2024-10-13 16:45:16,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 83 transitions, 488 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-10-13 16:45:16,335 INFO L231 Difference]: Finished difference. Result has 67 places, 63 transitions, 294 flow [2024-10-13 16:45:16,335 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=294, PETRI_PLACES=67, PETRI_TRANSITIONS=63} [2024-10-13 16:45:16,336 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 24 predicate places. [2024-10-13 16:45:16,336 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 63 transitions, 294 flow [2024-10-13 16:45:16,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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 16:45:16,337 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:16,337 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:16,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-13 16:45:16,337 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2024-10-13 16:45:16,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:16,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1506931976, now seen corresponding path program 1 times [2024-10-13 16:45:16,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:16,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073332187] [2024-10-13 16:45:16,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:16,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:16,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:16,499 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-13 16:45:16,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:16,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073332187] [2024-10-13 16:45:16,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073332187] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:45:16,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:45:16,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:45:16,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444585943] [2024-10-13 16:45:16,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:45:16,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:45:16,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:16,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:45:16,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:45:16,505 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 45 [2024-10-13 16:45:16,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 63 transitions, 294 flow. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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 16:45:16,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:16,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 45 [2024-10-13 16:45:16,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:16,664 INFO L124 PetriNetUnfolderBase]: 651/1254 cut-off events. [2024-10-13 16:45:16,664 INFO L125 PetriNetUnfolderBase]: For 1958/1958 co-relation queries the response was YES. [2024-10-13 16:45:16,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3572 conditions, 1254 events. 651/1254 cut-off events. For 1958/1958 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 6318 event pairs, 77 based on Foata normal form. 8/1259 useless extension candidates. Maximal degree in co-relation 3383. Up to 938 conditions per place. [2024-10-13 16:45:16,670 INFO L140 encePairwiseOnDemand]: 42/45 looper letters, 69 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2024-10-13 16:45:16,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 76 transitions, 518 flow [2024-10-13 16:45:16,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:45:16,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:45:16,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2024-10-13 16:45:16,671 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5444444444444444 [2024-10-13 16:45:16,671 INFO L175 Difference]: Start difference. First operand has 67 places, 63 transitions, 294 flow. Second operand 4 states and 98 transitions. [2024-10-13 16:45:16,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 76 transitions, 518 flow [2024-10-13 16:45:16,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 76 transitions, 501 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-10-13 16:45:16,674 INFO L231 Difference]: Finished difference. Result has 65 places, 62 transitions, 285 flow [2024-10-13 16:45:16,674 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=285, PETRI_PLACES=65, PETRI_TRANSITIONS=62} [2024-10-13 16:45:16,675 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 22 predicate places. [2024-10-13 16:45:16,675 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 62 transitions, 285 flow [2024-10-13 16:45:16,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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 16:45:16,675 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:16,675 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:16,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-13 16:45:16,676 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2024-10-13 16:45:16,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:16,676 INFO L85 PathProgramCache]: Analyzing trace with hash -124269898, now seen corresponding path program 1 times [2024-10-13 16:45:16,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:16,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103765105] [2024-10-13 16:45:16,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:16,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:16,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:16,801 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-13 16:45:16,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:16,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103765105] [2024-10-13 16:45:16,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103765105] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:45:16,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:45:16,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:45:16,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656724791] [2024-10-13 16:45:16,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:45:16,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:45:16,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:16,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:45:16,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:45:16,807 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 45 [2024-10-13 16:45:16,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 62 transitions, 285 flow. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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 16:45:16,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:16,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 45 [2024-10-13 16:45:16,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:16,948 INFO L124 PetriNetUnfolderBase]: 651/1246 cut-off events. [2024-10-13 16:45:16,948 INFO L125 PetriNetUnfolderBase]: For 1725/1725 co-relation queries the response was YES. [2024-10-13 16:45:16,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3526 conditions, 1246 events. 651/1246 cut-off events. For 1725/1725 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 6233 event pairs, 77 based on Foata normal form. 8/1251 useless extension candidates. Maximal degree in co-relation 2050. Up to 930 conditions per place. [2024-10-13 16:45:16,952 INFO L140 encePairwiseOnDemand]: 42/45 looper letters, 0 selfloop transitions, 0 changer transitions 75/75 dead transitions. [2024-10-13 16:45:16,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 75 transitions, 501 flow [2024-10-13 16:45:16,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:45:16,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:45:16,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 97 transitions. [2024-10-13 16:45:16,954 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5388888888888889 [2024-10-13 16:45:16,954 INFO L175 Difference]: Start difference. First operand has 65 places, 62 transitions, 285 flow. Second operand 4 states and 97 transitions. [2024-10-13 16:45:16,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 75 transitions, 501 flow [2024-10-13 16:45:16,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 75 transitions, 500 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:45:16,956 INFO L231 Difference]: Finished difference. Result has 66 places, 0 transitions, 0 flow [2024-10-13 16:45:16,957 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=66, PETRI_TRANSITIONS=0} [2024-10-13 16:45:16,957 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 23 predicate places. [2024-10-13 16:45:16,957 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 0 transitions, 0 flow [2024-10-13 16:45:16,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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 16:45:16,960 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2024-10-13 16:45:16,960 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2024-10-13 16:45:16,960 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2024-10-13 16:45:16,961 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2024-10-13 16:45:16,961 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2024-10-13 16:45:16,961 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2024-10-13 16:45:16,961 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 16 remaining) [2024-10-13 16:45:16,961 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 16 remaining) [2024-10-13 16:45:16,961 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2024-10-13 16:45:16,961 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2024-10-13 16:45:16,961 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 16 remaining) [2024-10-13 16:45:16,961 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 16 remaining) [2024-10-13 16:45:16,961 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2024-10-13 16:45:16,961 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2024-10-13 16:45:16,962 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2024-10-13 16:45:16,962 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2024-10-13 16:45:16,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-13 16:45:16,962 INFO L407 BasicCegarLoop]: Path program histogram: [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:16,967 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-13 16:45:16,967 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-13 16:45:16,971 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 04:45:16 BasicIcfg [2024-10-13 16:45:16,971 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-13 16:45:16,972 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-13 16:45:16,972 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-13 16:45:16,972 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-13 16:45:16,972 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:45:07" (3/4) ... [2024-10-13 16:45:16,973 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-13 16:45:16,976 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-10-13 16:45:16,976 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-10-13 16:45:16,980 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 111 nodes and edges [2024-10-13 16:45:16,981 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2024-10-13 16:45:16,981 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2024-10-13 16:45:16,981 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-10-13 16:45:17,071 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-13 16:45:17,071 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-13 16:45:17,071 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-13 16:45:17,072 INFO L158 Benchmark]: Toolchain (without parser) took 10962.74ms. Allocated memory was 142.6MB in the beginning and 268.4MB in the end (delta: 125.8MB). Free memory was 69.6MB in the beginning and 87.7MB in the end (delta: -18.2MB). Peak memory consumption was 110.8MB. Max. memory is 16.1GB. [2024-10-13 16:45:17,072 INFO L158 Benchmark]: CDTParser took 0.91ms. Allocated memory is still 142.6MB. Free memory was 105.1MB in the beginning and 104.7MB in the end (delta: 315.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 16:45:17,072 INFO L158 Benchmark]: CACSL2BoogieTranslator took 293.19ms. Allocated memory is still 142.6MB. Free memory was 69.2MB in the beginning and 56.3MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-13 16:45:17,072 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.17ms. Allocated memory is still 142.6MB. Free memory was 56.3MB in the beginning and 53.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 16:45:17,073 INFO L158 Benchmark]: Boogie Preprocessor took 51.43ms. Allocated memory is still 142.6MB. Free memory was 53.8MB in the beginning and 51.4MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 16:45:17,073 INFO L158 Benchmark]: RCFGBuilder took 789.92ms. Allocated memory was 142.6MB in the beginning and 184.5MB in the end (delta: 41.9MB). Free memory was 51.4MB in the beginning and 110.6MB in the end (delta: -59.2MB). Peak memory consumption was 21.9MB. Max. memory is 16.1GB. [2024-10-13 16:45:17,073 INFO L158 Benchmark]: TraceAbstraction took 9670.67ms. Allocated memory was 184.5MB in the beginning and 268.4MB in the end (delta: 83.9MB). Free memory was 109.5MB in the beginning and 93.0MB in the end (delta: 16.5MB). Peak memory consumption was 99.4MB. Max. memory is 16.1GB. [2024-10-13 16:45:17,073 INFO L158 Benchmark]: Witness Printer took 99.70ms. Allocated memory is still 268.4MB. Free memory was 93.0MB in the beginning and 87.7MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-10-13 16:45:17,076 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.91ms. Allocated memory is still 142.6MB. Free memory was 105.1MB in the beginning and 104.7MB in the end (delta: 315.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 293.19ms. Allocated memory is still 142.6MB. Free memory was 69.2MB in the beginning and 56.3MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.17ms. Allocated memory is still 142.6MB. Free memory was 56.3MB in the beginning and 53.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.43ms. Allocated memory is still 142.6MB. Free memory was 53.8MB in the beginning and 51.4MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 789.92ms. Allocated memory was 142.6MB in the beginning and 184.5MB in the end (delta: 41.9MB). Free memory was 51.4MB in the beginning and 110.6MB in the end (delta: -59.2MB). Peak memory consumption was 21.9MB. Max. memory is 16.1GB. * TraceAbstraction took 9670.67ms. Allocated memory was 184.5MB in the beginning and 268.4MB in the end (delta: 83.9MB). Free memory was 109.5MB in the beginning and 93.0MB in the end (delta: 16.5MB). Peak memory consumption was 99.4MB. Max. memory is 16.1GB. * Witness Printer took 99.70ms. Allocated memory is still 268.4MB. Free memory was 93.0MB in the beginning and 87.7MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 72]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 72]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: 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, 60 locations, 16 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: 9.6s, OverallIterations: 20, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 669 SdHoareTripleChecker+Valid, 2.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 604 mSDsluCounter, 164 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 127 mSDsCounter, 159 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2441 IncrementalHoareTripleChecker+Invalid, 2600 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 159 mSolverCounterUnsat, 37 mSDtfsCounter, 2441 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 343 GetRequests, 213 SyntacticMatches, 5 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=352occurred in iteration=7, InterpolantAutomatonStates: 109, 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, 2.4s InterpolantComputationTime, 776 NumberOfCodeBlocks, 740 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 816 ConstructedInterpolants, 0 QuantifiedInterpolants, 1430 SizeOfPredicates, 17 NumberOfNonLiveVariables, 1017 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 31 InterpolantComputations, 16 PerfectInterpolantSequences, 1030/1132 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 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-13 16:45:17,104 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE