./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-min-max-dec.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 803cd42f 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 ../sv-benchmarks/c/weaver/popl20-min-max-dec.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 47814a6c2066a31334f0b50a42e69cfeb567d5dd7f02dc6c703588c90e067366 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-23 01:59:05,817 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 01:59:05,899 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-23 01:59:05,904 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 01:59:05,905 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 01:59:05,939 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 01:59:05,940 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 01:59:05,940 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 01:59:05,941 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 01:59:05,943 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 01:59:05,943 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 01:59:05,944 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 01:59:05,944 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 01:59:05,945 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 01:59:05,946 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 01:59:05,947 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 01:59:05,947 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 01:59:05,947 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 01:59:05,948 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 01:59:05,948 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 01:59:05,948 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 01:59:05,951 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 01:59:05,952 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 01:59:05,952 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 01:59:05,952 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-23 01:59:05,953 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-23 01:59:05,953 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 01:59:05,953 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 01:59:05,953 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 01:59:05,954 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 01:59:05,954 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 01:59:05,954 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 01:59:05,955 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 01:59:05,955 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 01:59:05,955 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 01:59:05,955 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 01:59:05,956 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 01:59:05,956 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 01:59:05,956 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 01:59:05,956 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 01:59:05,957 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 01:59:05,959 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 01:59:05,959 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 01:59:05,959 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 01:59:05,960 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47814a6c2066a31334f0b50a42e69cfeb567d5dd7f02dc6c703588c90e067366 [2024-11-23 01:59:06,222 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 01:59:06,249 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 01:59:06,253 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 01:59:06,254 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 01:59:06,254 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 01:59:06,255 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-min-max-dec.wvr.c [2024-11-23 01:59:07,761 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-23 01:59:07,969 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 01:59:07,969 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-min-max-dec.wvr.c [2024-11-23 01:59:07,977 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0dce40ce/966c4a2228b040a8a36d764f54155a9c/FLAG8dd6af395 [2024-11-23 01:59:07,991 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0dce40ce/966c4a2228b040a8a36d764f54155a9c [2024-11-23 01:59:07,993 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 01:59:07,995 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 01:59:07,998 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 01:59:07,998 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 01:59:08,003 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 01:59:08,004 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:59:07" (1/1) ... [2024-11-23 01:59:08,004 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62ba0051 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:08, skipping insertion in model container [2024-11-23 01:59:08,005 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:59:07" (1/1) ... [2024-11-23 01:59:08,031 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 01:59:08,271 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 01:59:08,283 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 01:59:08,322 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 01:59:08,346 INFO L204 MainTranslator]: Completed translation [2024-11-23 01:59:08,347 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:08 WrapperNode [2024-11-23 01:59:08,347 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 01:59:08,348 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 01:59:08,348 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 01:59:08,348 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 01:59:08,356 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:08" (1/1) ... [2024-11-23 01:59:08,369 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:08" (1/1) ... [2024-11-23 01:59:08,401 INFO L138 Inliner]: procedures = 23, calls = 26, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 126 [2024-11-23 01:59:08,402 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 01:59:08,403 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 01:59:08,403 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 01:59:08,403 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 01:59:08,415 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:08" (1/1) ... [2024-11-23 01:59:08,415 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:08" (1/1) ... [2024-11-23 01:59:08,418 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:08" (1/1) ... [2024-11-23 01:59:08,437 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-23 01:59:08,437 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:08" (1/1) ... [2024-11-23 01:59:08,437 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:08" (1/1) ... [2024-11-23 01:59:08,445 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:08" (1/1) ... [2024-11-23 01:59:08,454 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:08" (1/1) ... [2024-11-23 01:59:08,456 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:08" (1/1) ... [2024-11-23 01:59:08,458 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:08" (1/1) ... [2024-11-23 01:59:08,460 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 01:59:08,462 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 01:59:08,463 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 01:59:08,463 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 01:59:08,464 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:08" (1/1) ... [2024-11-23 01:59:08,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 01:59:08,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:59:08,518 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 01:59:08,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 01:59:08,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 01:59:08,581 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-23 01:59:08,581 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-23 01:59:08,581 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-23 01:59:08,581 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-23 01:59:08,582 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-23 01:59:08,582 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-23 01:59:08,582 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-23 01:59:08,582 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-23 01:59:08,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 01:59:08,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 01:59:08,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 01:59:08,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-23 01:59:08,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-23 01:59:08,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 01:59:08,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 01:59:08,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 01:59:08,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-23 01:59:08,587 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-23 01:59:08,726 INFO L238 CfgBuilder]: Building ICFG [2024-11-23 01:59:08,729 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 01:59:09,109 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-23 01:59:09,109 INFO L287 CfgBuilder]: Performing block encoding [2024-11-23 01:59:09,344 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 01:59:09,345 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-23 01:59:09,346 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:59:09 BoogieIcfgContainer [2024-11-23 01:59:09,346 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 01:59:09,349 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 01:59:09,349 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 01:59:09,353 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 01:59:09,353 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:59:07" (1/3) ... [2024-11-23 01:59:09,354 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@729145f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:59:09, skipping insertion in model container [2024-11-23 01:59:09,354 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:08" (2/3) ... [2024-11-23 01:59:09,355 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@729145f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:59:09, skipping insertion in model container [2024-11-23 01:59:09,356 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:59:09" (3/3) ... [2024-11-23 01:59:09,357 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-dec.wvr.c [2024-11-23 01:59:09,375 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 01:59:09,376 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-11-23 01:59:09,376 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-23 01:59:09,463 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-23 01:59:09,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 84 transitions, 196 flow [2024-11-23 01:59:09,558 INFO L124 PetriNetUnfolderBase]: 7/80 cut-off events. [2024-11-23 01:59:09,559 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-23 01:59:09,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 80 events. 7/80 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 230 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 71. Up to 2 conditions per place. [2024-11-23 01:59:09,564 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 84 transitions, 196 flow [2024-11-23 01:59:09,568 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 78 transitions, 177 flow [2024-11-23 01:59:09,577 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 01:59:09,583 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;@23ba2ffa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 01:59:09,584 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-11-23 01:59:09,588 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 01:59:09,589 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-11-23 01:59:09,589 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 01:59:09,589 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:59:09,590 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-23 01:59:09,590 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-23 01:59:09,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:59:09,596 INFO L85 PathProgramCache]: Analyzing trace with hash 508805331, now seen corresponding path program 1 times [2024-11-23 01:59:09,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:59:09,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288846478] [2024-11-23 01:59:09,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:59:09,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:59:09,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:59:09,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:59:09,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:59:09,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288846478] [2024-11-23 01:59:09,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288846478] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:59:09,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:59:09,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:59:09,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984100464] [2024-11-23 01:59:09,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:59:09,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:59:09,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:59:09,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:59:09,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:59:09,982 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 84 [2024-11-23 01:59:09,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 78 transitions, 177 flow. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:59:09,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:59:09,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 84 [2024-11-23 01:59:09,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:59:13,236 INFO L124 PetriNetUnfolderBase]: 17677/29142 cut-off events. [2024-11-23 01:59:13,237 INFO L125 PetriNetUnfolderBase]: For 1185/1185 co-relation queries the response was YES. [2024-11-23 01:59:13,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51996 conditions, 29142 events. 17677/29142 cut-off events. For 1185/1185 co-relation queries the response was YES. Maximal size of possible extension queue 1451. Compared 246080 event pairs, 12761 based on Foata normal form. 1/25265 useless extension candidates. Maximal degree in co-relation 49383. Up to 21575 conditions per place. [2024-11-23 01:59:13,519 INFO L140 encePairwiseOnDemand]: 78/84 looper letters, 41 selfloop transitions, 4 changer transitions 0/81 dead transitions. [2024-11-23 01:59:13,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 81 transitions, 273 flow [2024-11-23 01:59:13,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:59:13,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:59:13,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 207 transitions. [2024-11-23 01:59:13,536 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6160714285714286 [2024-11-23 01:59:13,538 INFO L175 Difference]: Start difference. First operand has 84 places, 78 transitions, 177 flow. Second operand 4 states and 207 transitions. [2024-11-23 01:59:13,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 81 transitions, 273 flow [2024-11-23 01:59:13,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 81 transitions, 260 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-23 01:59:13,564 INFO L231 Difference]: Finished difference. Result has 82 places, 81 transitions, 193 flow [2024-11-23 01:59:13,567 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=193, PETRI_PLACES=82, PETRI_TRANSITIONS=81} [2024-11-23 01:59:13,572 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, -2 predicate places. [2024-11-23 01:59:13,572 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 81 transitions, 193 flow [2024-11-23 01:59:13,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:59:13,573 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:59:13,573 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-23 01:59:13,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 01:59:13,574 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-23 01:59:13,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:59:13,575 INFO L85 PathProgramCache]: Analyzing trace with hash 880540487, now seen corresponding path program 1 times [2024-11-23 01:59:13,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:59:13,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685714971] [2024-11-23 01:59:13,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:59:13,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:59:13,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:59:13,752 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:59:13,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:59:13,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685714971] [2024-11-23 01:59:13,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685714971] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:59:13,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20586483] [2024-11-23 01:59:13,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:59:13,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:59:13,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:59:13,756 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:59:13,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 01:59:13,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:59:13,839 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 01:59:13,844 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:59:13,898 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:59:13,899 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 01:59:13,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20586483] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:59:13,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 01:59:13,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-23 01:59:13,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221007424] [2024-11-23 01:59:13,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:59:13,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 01:59:13,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:59:13,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 01:59:13,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-23 01:59:13,914 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 84 [2024-11-23 01:59:13,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 81 transitions, 193 flow. Second operand has 6 states, 6 states have (on average 41.0) internal successors, (246), 6 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:59:13,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:59:13,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 84 [2024-11-23 01:59:13,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:59:16,367 INFO L124 PetriNetUnfolderBase]: 17677/29141 cut-off events. [2024-11-23 01:59:16,368 INFO L125 PetriNetUnfolderBase]: For 229/229 co-relation queries the response was YES. [2024-11-23 01:59:16,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51671 conditions, 29141 events. 17677/29141 cut-off events. For 229/229 co-relation queries the response was YES. Maximal size of possible extension queue 1451. Compared 246035 event pairs, 12761 based on Foata normal form. 1/25265 useless extension candidates. Maximal degree in co-relation 51644. Up to 21570 conditions per place. [2024-11-23 01:59:16,606 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 37 selfloop transitions, 7 changer transitions 0/80 dead transitions. [2024-11-23 01:59:16,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 80 transitions, 277 flow [2024-11-23 01:59:16,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 01:59:16,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 01:59:16,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 285 transitions. [2024-11-23 01:59:16,612 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5654761904761905 [2024-11-23 01:59:16,613 INFO L175 Difference]: Start difference. First operand has 82 places, 81 transitions, 193 flow. Second operand 6 states and 285 transitions. [2024-11-23 01:59:16,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 80 transitions, 277 flow [2024-11-23 01:59:16,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 80 transitions, 274 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 01:59:16,616 INFO L231 Difference]: Finished difference. Result has 85 places, 80 transitions, 200 flow [2024-11-23 01:59:16,617 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=200, PETRI_PLACES=85, PETRI_TRANSITIONS=80} [2024-11-23 01:59:16,618 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 1 predicate places. [2024-11-23 01:59:16,618 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 80 transitions, 200 flow [2024-11-23 01:59:16,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 41.0) internal successors, (246), 6 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:59:16,619 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:59:16,619 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2024-11-23 01:59:16,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-23 01:59:16,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:59:16,826 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-23 01:59:16,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:59:16,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1526951836, now seen corresponding path program 1 times [2024-11-23 01:59:16,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:59:16,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401592236] [2024-11-23 01:59:16,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:59:16,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:59:16,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:59:17,108 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:59:17,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:59:17,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401592236] [2024-11-23 01:59:17,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401592236] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:59:17,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616308799] [2024-11-23 01:59:17,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:59:17,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:59:17,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:59:17,112 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:59:17,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 01:59:17,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:59:17,181 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 01:59:17,182 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:59:17,212 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:59:17,213 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:59:17,266 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:59:17,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616308799] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:59:17,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:59:17,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-23 01:59:17,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446136775] [2024-11-23 01:59:17,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:59:17,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 01:59:17,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:59:17,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 01:59:17,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-23 01:59:17,286 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 84 [2024-11-23 01:59:17,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 80 transitions, 200 flow. Second operand has 12 states, 12 states have (on average 41.166666666666664) internal successors, (494), 12 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:59:17,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:59:17,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 84 [2024-11-23 01:59:17,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:59:19,402 INFO L124 PetriNetUnfolderBase]: 17680/29153 cut-off events. [2024-11-23 01:59:19,403 INFO L125 PetriNetUnfolderBase]: For 246/246 co-relation queries the response was YES. [2024-11-23 01:59:19,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51715 conditions, 29153 events. 17680/29153 cut-off events. For 246/246 co-relation queries the response was YES. Maximal size of possible extension queue 1451. Compared 246179 event pairs, 12761 based on Foata normal form. 3/25277 useless extension candidates. Maximal degree in co-relation 51645. Up to 21577 conditions per place. [2024-11-23 01:59:19,610 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 40 selfloop transitions, 13 changer transitions 0/89 dead transitions. [2024-11-23 01:59:19,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 89 transitions, 360 flow [2024-11-23 01:59:19,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 01:59:19,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-23 01:59:19,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 456 transitions. [2024-11-23 01:59:19,614 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2024-11-23 01:59:19,614 INFO L175 Difference]: Start difference. First operand has 85 places, 80 transitions, 200 flow. Second operand 10 states and 456 transitions. [2024-11-23 01:59:19,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 89 transitions, 360 flow [2024-11-23 01:59:19,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 89 transitions, 314 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-11-23 01:59:19,618 INFO L231 Difference]: Finished difference. Result has 92 places, 89 transitions, 252 flow [2024-11-23 01:59:19,618 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=252, PETRI_PLACES=92, PETRI_TRANSITIONS=89} [2024-11-23 01:59:19,619 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 8 predicate places. [2024-11-23 01:59:19,619 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 89 transitions, 252 flow [2024-11-23 01:59:19,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 41.166666666666664) internal successors, (494), 12 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:59:19,620 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:59:19,620 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:59:19,629 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 01:59:19,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-23 01:59:19,821 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-23 01:59:19,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:59:19,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1146063111, now seen corresponding path program 1 times [2024-11-23 01:59:19,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:59:19,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918681172] [2024-11-23 01:59:19,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:59:19,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:59:19,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:59:19,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:59:19,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:59:19,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918681172] [2024-11-23 01:59:19,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918681172] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:59:19,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:59:19,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 01:59:19,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072996311] [2024-11-23 01:59:19,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:59:19,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:59:19,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:59:19,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:59:19,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:59:19,944 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 84 [2024-11-23 01:59:19,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 89 transitions, 252 flow. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:59:19,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:59:19,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 84 [2024-11-23 01:59:19,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:59:23,447 INFO L124 PetriNetUnfolderBase]: 35361/59053 cut-off events. [2024-11-23 01:59:23,447 INFO L125 PetriNetUnfolderBase]: For 567/567 co-relation queries the response was YES. [2024-11-23 01:59:23,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103912 conditions, 59053 events. 35361/59053 cut-off events. For 567/567 co-relation queries the response was YES. Maximal size of possible extension queue 2680. Compared 544043 event pairs, 8077 based on Foata normal form. 955/52276 useless extension candidates. Maximal degree in co-relation 103878. Up to 28557 conditions per place. [2024-11-23 01:59:23,777 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 121 selfloop transitions, 4 changer transitions 1/159 dead transitions. [2024-11-23 01:59:23,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 159 transitions, 652 flow [2024-11-23 01:59:23,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 01:59:23,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 01:59:23,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 308 transitions. [2024-11-23 01:59:23,779 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7333333333333333 [2024-11-23 01:59:23,779 INFO L175 Difference]: Start difference. First operand has 92 places, 89 transitions, 252 flow. Second operand 5 states and 308 transitions. [2024-11-23 01:59:23,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 159 transitions, 652 flow [2024-11-23 01:59:23,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 159 transitions, 641 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-23 01:59:23,782 INFO L231 Difference]: Finished difference. Result has 97 places, 91 transitions, 269 flow [2024-11-23 01:59:23,783 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=269, PETRI_PLACES=97, PETRI_TRANSITIONS=91} [2024-11-23 01:59:23,783 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 13 predicate places. [2024-11-23 01:59:23,784 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 91 transitions, 269 flow [2024-11-23 01:59:23,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:59:23,784 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:59:23,784 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:59:23,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 01:59:23,785 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-23 01:59:23,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:59:23,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1101535529, now seen corresponding path program 1 times [2024-11-23 01:59:23,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:59:23,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590160416] [2024-11-23 01:59:23,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:59:23,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:59:23,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:59:23,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:59:23,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:59:23,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590160416] [2024-11-23 01:59:23,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590160416] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:59:23,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:59:23,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:59:23,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578359600] [2024-11-23 01:59:23,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:59:23,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:59:23,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:59:23,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:59:23,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:59:23,889 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 84 [2024-11-23 01:59:23,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 91 transitions, 269 flow. Second operand has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:59:23,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:59:23,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 84 [2024-11-23 01:59:23,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:59:26,379 INFO L124 PetriNetUnfolderBase]: 23331/36505 cut-off events. [2024-11-23 01:59:26,379 INFO L125 PetriNetUnfolderBase]: For 2109/2141 co-relation queries the response was YES. [2024-11-23 01:59:26,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68252 conditions, 36505 events. 23331/36505 cut-off events. For 2109/2141 co-relation queries the response was YES. Maximal size of possible extension queue 1838. Compared 298533 event pairs, 9859 based on Foata normal form. 32/33091 useless extension candidates. Maximal degree in co-relation 68215. Up to 17775 conditions per place. [2024-11-23 01:59:26,643 INFO L140 encePairwiseOnDemand]: 80/84 looper letters, 91 selfloop transitions, 3 changer transitions 0/132 dead transitions. [2024-11-23 01:59:26,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 132 transitions, 559 flow [2024-11-23 01:59:26,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:59:26,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:59:26,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 248 transitions. [2024-11-23 01:59:26,645 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7380952380952381 [2024-11-23 01:59:26,645 INFO L175 Difference]: Start difference. First operand has 97 places, 91 transitions, 269 flow. Second operand 4 states and 248 transitions. [2024-11-23 01:59:26,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 132 transitions, 559 flow [2024-11-23 01:59:26,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 132 transitions, 557 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 01:59:26,658 INFO L231 Difference]: Finished difference. Result has 98 places, 90 transitions, 271 flow [2024-11-23 01:59:26,658 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=271, PETRI_PLACES=98, PETRI_TRANSITIONS=90} [2024-11-23 01:59:26,659 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 14 predicate places. [2024-11-23 01:59:26,659 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 90 transitions, 271 flow [2024-11-23 01:59:26,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:59:26,660 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:59:26,660 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:59:26,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 01:59:26,660 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-23 01:59:26,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:59:26,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1101535528, now seen corresponding path program 1 times [2024-11-23 01:59:26,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:59:26,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804501060] [2024-11-23 01:59:26,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:59:26,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:59:26,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:59:26,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:59:26,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:59:26,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804501060] [2024-11-23 01:59:26,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804501060] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:59:26,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:59:26,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:59:26,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47079827] [2024-11-23 01:59:26,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:59:26,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 01:59:26,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:59:26,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 01:59:26,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 01:59:26,735 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 84 [2024-11-23 01:59:26,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 90 transitions, 271 flow. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:59:26,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:59:26,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 84 [2024-11-23 01:59:26,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:59:29,660 INFO L124 PetriNetUnfolderBase]: 23486/39309 cut-off events. [2024-11-23 01:59:29,660 INFO L125 PetriNetUnfolderBase]: For 4237/4269 co-relation queries the response was YES. [2024-11-23 01:59:29,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73189 conditions, 39309 events. 23486/39309 cut-off events. For 4237/4269 co-relation queries the response was YES. Maximal size of possible extension queue 2000. Compared 349788 event pairs, 16552 based on Foata normal form. 33/35611 useless extension candidates. Maximal degree in co-relation 73155. Up to 28671 conditions per place. [2024-11-23 01:59:29,883 INFO L140 encePairwiseOnDemand]: 81/84 looper letters, 49 selfloop transitions, 2 changer transitions 0/89 dead transitions. [2024-11-23 01:59:29,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 89 transitions, 370 flow [2024-11-23 01:59:29,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 01:59:29,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 01:59:29,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 168 transitions. [2024-11-23 01:59:29,884 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-23 01:59:29,884 INFO L175 Difference]: Start difference. First operand has 98 places, 90 transitions, 271 flow. Second operand 3 states and 168 transitions. [2024-11-23 01:59:29,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 89 transitions, 370 flow [2024-11-23 01:59:29,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 89 transitions, 364 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 01:59:29,897 INFO L231 Difference]: Finished difference. Result has 97 places, 89 transitions, 266 flow [2024-11-23 01:59:29,898 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=266, PETRI_PLACES=97, PETRI_TRANSITIONS=89} [2024-11-23 01:59:29,898 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 13 predicate places. [2024-11-23 01:59:29,898 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 89 transitions, 266 flow [2024-11-23 01:59:29,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:59:29,899 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:59:29,899 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:59:29,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 01:59:29,899 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-23 01:59:29,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:59:29,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1779969764, now seen corresponding path program 1 times [2024-11-23 01:59:29,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:59:29,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797451547] [2024-11-23 01:59:29,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:59:29,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:59:29,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:59:30,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:59:30,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:59:30,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797451547] [2024-11-23 01:59:30,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797451547] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:59:30,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197198799] [2024-11-23 01:59:30,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:59:30,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:59:30,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:59:30,208 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:59:30,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 01:59:30,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:59:30,287 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-23 01:59:30,289 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:59:30,341 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-23 01:59:30,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:59:30,448 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:59:30,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-23 01:59:30,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-23 01:59:30,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:59:30,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197198799] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:59:30,548 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:59:30,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2024-11-23 01:59:30,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132249374] [2024-11-23 01:59:30,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:59:30,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 01:59:30,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:59:30,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 01:59:30,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-11-23 01:59:30,564 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 84 [2024-11-23 01:59:30,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 89 transitions, 266 flow. Second operand has 13 states, 13 states have (on average 44.38461538461539) internal successors, (577), 13 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:59:30,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:59:30,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 84 [2024-11-23 01:59:30,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:59:34,709 INFO L124 PetriNetUnfolderBase]: 38713/59778 cut-off events. [2024-11-23 01:59:34,710 INFO L125 PetriNetUnfolderBase]: For 3262/3294 co-relation queries the response was YES. [2024-11-23 01:59:34,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112236 conditions, 59778 events. 38713/59778 cut-off events. For 3262/3294 co-relation queries the response was YES. Maximal size of possible extension queue 2470. Compared 506180 event pairs, 12350 based on Foata normal form. 32/55262 useless extension candidates. Maximal degree in co-relation 112209. Up to 22291 conditions per place. [2024-11-23 01:59:35,139 INFO L140 encePairwiseOnDemand]: 73/84 looper letters, 106 selfloop transitions, 14 changer transitions 0/158 dead transitions. [2024-11-23 01:59:35,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 158 transitions, 674 flow [2024-11-23 01:59:35,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 01:59:35,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-23 01:59:35,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 486 transitions. [2024-11-23 01:59:35,141 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-11-23 01:59:35,141 INFO L175 Difference]: Start difference. First operand has 97 places, 89 transitions, 266 flow. Second operand 9 states and 486 transitions. [2024-11-23 01:59:35,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 158 transitions, 674 flow [2024-11-23 01:59:35,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 158 transitions, 670 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 01:59:35,152 INFO L231 Difference]: Finished difference. Result has 106 places, 94 transitions, 326 flow [2024-11-23 01:59:35,152 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=326, PETRI_PLACES=106, PETRI_TRANSITIONS=94} [2024-11-23 01:59:35,153 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 22 predicate places. [2024-11-23 01:59:35,153 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 94 transitions, 326 flow [2024-11-23 01:59:35,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 44.38461538461539) internal successors, (577), 13 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:59:35,154 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:59:35,154 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1] [2024-11-23 01:59:35,160 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-23 01:59:35,355 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 [2024-11-23 01:59:35,356 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-23 01:59:35,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:59:35,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1681187984, now seen corresponding path program 2 times [2024-11-23 01:59:35,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:59:35,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096763363] [2024-11-23 01:59:35,356 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 01:59:35,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:59:35,376 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 01:59:35,377 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:59:35,425 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-23 01:59:35,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:59:35,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096763363] [2024-11-23 01:59:35,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096763363] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:59:35,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060975437] [2024-11-23 01:59:35,426 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 01:59:35,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:59:35,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:59:35,431 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:59:35,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 01:59:35,493 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 01:59:35,494 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:59:35,495 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-23 01:59:35,496 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:59:35,526 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-23 01:59:35,526 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:59:35,568 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-23 01:59:35,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060975437] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:59:35,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:59:35,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2024-11-23 01:59:35,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739865604] [2024-11-23 01:59:35,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:59:35,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 01:59:35,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:59:35,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 01:59:35,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 01:59:35,594 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 84 [2024-11-23 01:59:35,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 94 transitions, 326 flow. Second operand has 6 states, 6 states have (on average 40.166666666666664) internal successors, (241), 6 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:59:35,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:59:35,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 84 [2024-11-23 01:59:35,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:59:40,368 INFO L124 PetriNetUnfolderBase]: 39135/62148 cut-off events. [2024-11-23 01:59:40,369 INFO L125 PetriNetUnfolderBase]: For 19044/19076 co-relation queries the response was YES. [2024-11-23 01:59:40,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128321 conditions, 62148 events. 39135/62148 cut-off events. For 19044/19076 co-relation queries the response was YES. Maximal size of possible extension queue 2615. Compared 544052 event pairs, 28059 based on Foata normal form. 33/57605 useless extension candidates. Maximal degree in co-relation 128285. Up to 48172 conditions per place. [2024-11-23 01:59:40,810 INFO L140 encePairwiseOnDemand]: 78/84 looper letters, 41 selfloop transitions, 16 changer transitions 0/93 dead transitions. [2024-11-23 01:59:40,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 93 transitions, 430 flow [2024-11-23 01:59:40,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 01:59:40,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 01:59:40,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 275 transitions. [2024-11-23 01:59:40,811 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5456349206349206 [2024-11-23 01:59:40,811 INFO L175 Difference]: Start difference. First operand has 106 places, 94 transitions, 326 flow. Second operand 6 states and 275 transitions. [2024-11-23 01:59:40,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 93 transitions, 430 flow [2024-11-23 01:59:40,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 93 transitions, 410 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-11-23 01:59:40,838 INFO L231 Difference]: Finished difference. Result has 102 places, 93 transitions, 328 flow [2024-11-23 01:59:40,839 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=328, PETRI_PLACES=102, PETRI_TRANSITIONS=93} [2024-11-23 01:59:40,839 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 18 predicate places. [2024-11-23 01:59:40,839 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 93 transitions, 328 flow [2024-11-23 01:59:40,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 40.166666666666664) internal successors, (241), 6 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:59:40,840 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:59:40,840 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:59:40,846 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 01:59:41,040 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 [2024-11-23 01:59:41,041 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-23 01:59:41,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:59:41,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1153979142, now seen corresponding path program 1 times [2024-11-23 01:59:41,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:59:41,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392140135] [2024-11-23 01:59:41,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:59:41,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:59:41,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:59:41,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 01:59:41,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:59:41,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392140135] [2024-11-23 01:59:41,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392140135] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:59:41,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:59:41,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:59:41,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937007118] [2024-11-23 01:59:41,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:59:41,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:59:41,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:59:41,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:59:41,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:59:41,105 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 84 [2024-11-23 01:59:41,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 93 transitions, 328 flow. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:59:41,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:59:41,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 84 [2024-11-23 01:59:41,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:59:45,792 INFO L124 PetriNetUnfolderBase]: 45352/68655 cut-off events. [2024-11-23 01:59:45,792 INFO L125 PetriNetUnfolderBase]: For 20284/20316 co-relation queries the response was YES. [2024-11-23 01:59:45,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143069 conditions, 68655 events. 45352/68655 cut-off events. For 20284/20316 co-relation queries the response was YES. Maximal size of possible extension queue 2779. Compared 573543 event pairs, 19307 based on Foata normal form. 1622/66676 useless extension candidates. Maximal degree in co-relation 142982. Up to 37244 conditions per place. [2024-11-23 01:59:46,265 INFO L140 encePairwiseOnDemand]: 78/84 looper letters, 97 selfloop transitions, 4 changer transitions 0/136 dead transitions. [2024-11-23 01:59:46,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 136 transitions, 636 flow [2024-11-23 01:59:46,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:59:46,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:59:46,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 249 transitions. [2024-11-23 01:59:46,267 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7410714285714286 [2024-11-23 01:59:46,267 INFO L175 Difference]: Start difference. First operand has 102 places, 93 transitions, 328 flow. Second operand 4 states and 249 transitions. [2024-11-23 01:59:46,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 136 transitions, 636 flow [2024-11-23 01:59:46,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 136 transitions, 608 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-23 01:59:46,304 INFO L231 Difference]: Finished difference. Result has 103 places, 94 transitions, 321 flow [2024-11-23 01:59:46,305 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=321, PETRI_PLACES=103, PETRI_TRANSITIONS=94} [2024-11-23 01:59:46,306 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 19 predicate places. [2024-11-23 01:59:46,306 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 94 transitions, 321 flow [2024-11-23 01:59:46,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:59:46,306 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:59:46,307 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:59:46,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 01:59:46,307 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-23 01:59:46,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:59:46,307 INFO L85 PathProgramCache]: Analyzing trace with hash -572865167, now seen corresponding path program 1 times [2024-11-23 01:59:46,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:59:46,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220038538] [2024-11-23 01:59:46,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:59:46,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:59:46,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:59:46,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 01:59:46,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:59:46,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220038538] [2024-11-23 01:59:46,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220038538] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:59:46,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:59:46,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:59:46,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264090623] [2024-11-23 01:59:46,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:59:46,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:59:46,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:59:46,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:59:46,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:59:46,388 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 84 [2024-11-23 01:59:46,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 94 transitions, 321 flow. Second operand has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:59:46,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:59:46,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 84 [2024-11-23 01:59:46,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand