./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-more-buffer-mult3.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-more-buffer-mult3.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 7888761977ccc49b1a75199021e374591654c6a4364e63bfc6c86e1c7bb7d64b --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-23 01:59:51,882 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 01:59:51,933 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-23 01:59:51,938 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 01:59:51,938 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 01:59:51,952 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 01:59:51,953 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 01:59:51,953 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 01:59:51,953 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 01:59:51,954 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 01:59:51,954 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 01:59:51,954 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 01:59:51,955 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 01:59:51,955 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 01:59:51,955 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 01:59:51,955 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 01:59:51,956 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 01:59:51,956 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 01:59:51,956 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 01:59:51,956 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 01:59:51,957 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 01:59:51,957 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 01:59:51,957 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 01:59:51,958 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 01:59:51,960 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-23 01:59:51,960 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-23 01:59:51,960 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 01:59:51,960 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 01:59:51,961 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 01:59:51,961 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 01:59:51,961 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 01:59:51,961 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 01:59:51,961 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 01:59:51,961 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 01:59:51,961 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 01:59:51,962 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 01:59:51,962 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 01:59:51,962 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 01:59:51,962 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 01:59:51,962 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 01:59:51,962 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 01:59:51,963 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 01:59:51,963 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 01:59:51,964 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 01:59:51,964 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7888761977ccc49b1a75199021e374591654c6a4364e63bfc6c86e1c7bb7d64b [2024-11-23 01:59:52,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 01:59:52,214 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 01:59:52,220 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 01:59:52,221 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 01:59:52,223 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 01:59:52,224 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-buffer-mult3.wvr.c [2024-11-23 01:59:53,410 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-23 01:59:53,582 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 01:59:53,583 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-buffer-mult3.wvr.c [2024-11-23 01:59:53,589 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8265b4f7/34449c6cebf24c299e47da9d7e7e7970/FLAGcfb3de6be [2024-11-23 01:59:54,002 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8265b4f7/34449c6cebf24c299e47da9d7e7e7970 [2024-11-23 01:59:54,005 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 01:59:54,006 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 01:59:54,007 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 01:59:54,007 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 01:59:54,011 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 01:59:54,012 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:59:54" (1/1) ... [2024-11-23 01:59:54,012 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@681c7e2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:54, skipping insertion in model container [2024-11-23 01:59:54,012 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:59:54" (1/1) ... [2024-11-23 01:59:54,032 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 01:59:54,191 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 01:59:54,198 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 01:59:54,219 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 01:59:54,234 INFO L204 MainTranslator]: Completed translation [2024-11-23 01:59:54,234 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:54 WrapperNode [2024-11-23 01:59:54,234 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 01:59:54,235 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 01:59:54,235 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 01:59:54,235 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 01:59:54,240 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:54" (1/1) ... [2024-11-23 01:59:54,247 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:54" (1/1) ... [2024-11-23 01:59:54,277 INFO L138 Inliner]: procedures = 26, calls = 61, calls flagged for inlining = 19, calls inlined = 23, statements flattened = 344 [2024-11-23 01:59:54,277 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 01:59:54,277 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 01:59:54,278 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 01:59:54,278 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 01:59:54,287 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:54" (1/1) ... [2024-11-23 01:59:54,288 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:54" (1/1) ... [2024-11-23 01:59:54,291 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:54" (1/1) ... [2024-11-23 01:59:54,317 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-23 01:59:54,317 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:54" (1/1) ... [2024-11-23 01:59:54,320 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:54" (1/1) ... [2024-11-23 01:59:54,327 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:54" (1/1) ... [2024-11-23 01:59:54,333 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:54" (1/1) ... [2024-11-23 01:59:54,338 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:54" (1/1) ... [2024-11-23 01:59:54,339 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:54" (1/1) ... [2024-11-23 01:59:54,346 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 01:59:54,347 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 01:59:54,347 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 01:59:54,347 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 01:59:54,349 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:54" (1/1) ... [2024-11-23 01:59:54,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 01:59:54,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:59:54,379 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 01:59:54,382 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 01:59:54,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 01:59:54,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 01:59:54,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-23 01:59:54,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 01:59:54,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-23 01:59:54,421 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-23 01:59:54,421 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-23 01:59:54,421 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-23 01:59:54,421 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-23 01:59:54,421 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-23 01:59:54,421 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-23 01:59:54,421 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-23 01:59:54,421 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-23 01:59:54,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 01:59:54,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 01:59:54,422 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-23 01:59:54,422 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-23 01:59:54,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-23 01:59:54,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 01:59:54,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 01:59:54,423 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 01:59:54,518 INFO L238 CfgBuilder]: Building ICFG [2024-11-23 01:59:54,519 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 01:59:54,941 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-23 01:59:54,941 INFO L287 CfgBuilder]: Performing block encoding [2024-11-23 01:59:55,329 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 01:59:55,329 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-23 01:59:55,329 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:59:55 BoogieIcfgContainer [2024-11-23 01:59:55,330 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 01:59:55,331 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 01:59:55,331 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 01:59:55,333 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 01:59:55,334 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:59:54" (1/3) ... [2024-11-23 01:59:55,334 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@217af855 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:59:55, skipping insertion in model container [2024-11-23 01:59:55,334 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:54" (2/3) ... [2024-11-23 01:59:55,334 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@217af855 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:59:55, skipping insertion in model container [2024-11-23 01:59:55,334 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:59:55" (3/3) ... [2024-11-23 01:59:55,335 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult3.wvr.c [2024-11-23 01:59:55,348 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 01:59:55,348 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2024-11-23 01:59:55,348 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-23 01:59:55,448 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-23 01:59:55,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 82 transitions, 192 flow [2024-11-23 01:59:55,516 INFO L124 PetriNetUnfolderBase]: 6/78 cut-off events. [2024-11-23 01:59:55,516 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-23 01:59:55,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 78 events. 6/78 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 269 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2024-11-23 01:59:55,520 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 82 transitions, 192 flow [2024-11-23 01:59:55,524 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 76 transitions, 173 flow [2024-11-23 01:59:55,535 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 01:59:55,541 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;@5722ee57, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 01:59:55,541 INFO L334 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2024-11-23 01:59:55,545 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 01:59:55,545 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-23 01:59:55,545 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 01:59:55,545 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:59:55,546 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-23 01:59:55,546 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-23 01:59:55,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:59:55,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1083356, now seen corresponding path program 1 times [2024-11-23 01:59:55,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:59:55,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524769163] [2024-11-23 01:59:55,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:59:55,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:59:55,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:59:55,827 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 01:59:55,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:59:55,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524769163] [2024-11-23 01:59:55,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524769163] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:59:55,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:59:55,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 01:59:55,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597765956] [2024-11-23 01:59:55,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:59:55,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:59:55,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:59:55,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:59:55,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:59:55,881 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 82 [2024-11-23 01:59:55,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 76 transitions, 173 flow. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:59:55,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:59:55,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 82 [2024-11-23 01:59:55,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:00:02,207 INFO L124 PetriNetUnfolderBase]: 50181/66653 cut-off events. [2024-11-23 02:00:02,208 INFO L125 PetriNetUnfolderBase]: For 1504/1504 co-relation queries the response was YES. [2024-11-23 02:00:02,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130942 conditions, 66653 events. 50181/66653 cut-off events. For 1504/1504 co-relation queries the response was YES. Maximal size of possible extension queue 6958. Compared 483446 event pairs, 36482 based on Foata normal form. 2/28638 useless extension candidates. Maximal degree in co-relation 124360. Up to 62109 conditions per place. [2024-11-23 02:00:02,767 INFO L140 encePairwiseOnDemand]: 65/82 looper letters, 51 selfloop transitions, 7 changer transitions 0/76 dead transitions. [2024-11-23 02:00:02,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 76 transitions, 289 flow [2024-11-23 02:00:02,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 02:00:02,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 02:00:02,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 156 transitions. [2024-11-23 02:00:02,777 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47560975609756095 [2024-11-23 02:00:02,779 INFO L175 Difference]: Start difference. First operand has 83 places, 76 transitions, 173 flow. Second operand 4 states and 156 transitions. [2024-11-23 02:00:02,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 76 transitions, 289 flow [2024-11-23 02:00:03,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 76 transitions, 276 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-23 02:00:03,156 INFO L231 Difference]: Finished difference. Result has 76 places, 76 transitions, 208 flow [2024-11-23 02:00:03,157 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=208, PETRI_PLACES=76, PETRI_TRANSITIONS=76} [2024-11-23 02:00:03,160 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, -7 predicate places. [2024-11-23 02:00:03,160 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 76 transitions, 208 flow [2024-11-23 02:00:03,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:03,160 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:03,161 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-23 02:00:03,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 02:00:03,161 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-23 02:00:03,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:03,162 INFO L85 PathProgramCache]: Analyzing trace with hash -2084387767, now seen corresponding path program 1 times [2024-11-23 02:00:03,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:03,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987000734] [2024-11-23 02:00:03,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:03,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:03,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:03,272 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 02:00:03,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:03,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987000734] [2024-11-23 02:00:03,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987000734] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:00:03,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065703845] [2024-11-23 02:00:03,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:03,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:00:03,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:00:03,277 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 02:00:03,279 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 02:00:03,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:03,378 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 02:00:03,382 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:00:03,423 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 02:00:03,424 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 02:00:03,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065703845] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:00:03,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 02:00:03,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-23 02:00:03,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898122395] [2024-11-23 02:00:03,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:00:03,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 02:00:03,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:03,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 02:00:03,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-23 02:00:03,447 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 82 [2024-11-23 02:00:03,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 76 transitions, 208 flow. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 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 02:00:03,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:03,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 82 [2024-11-23 02:00:03,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:00:09,019 INFO L124 PetriNetUnfolderBase]: 50181/66651 cut-off events. [2024-11-23 02:00:09,020 INFO L125 PetriNetUnfolderBase]: For 201/201 co-relation queries the response was YES. [2024-11-23 02:00:09,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130158 conditions, 66651 events. 50181/66651 cut-off events. For 201/201 co-relation queries the response was YES. Maximal size of possible extension queue 6940. Compared 483485 event pairs, 36482 based on Foata normal form. 2/28639 useless extension candidates. Maximal degree in co-relation 130108. Up to 62099 conditions per place. [2024-11-23 02:00:09,452 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 44 selfloop transitions, 12 changer transitions 0/74 dead transitions. [2024-11-23 02:00:09,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 74 transitions, 312 flow [2024-11-23 02:00:09,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 02:00:09,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 02:00:09,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 190 transitions. [2024-11-23 02:00:09,454 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3861788617886179 [2024-11-23 02:00:09,454 INFO L175 Difference]: Start difference. First operand has 76 places, 76 transitions, 208 flow. Second operand 6 states and 190 transitions. [2024-11-23 02:00:09,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 74 transitions, 312 flow [2024-11-23 02:00:09,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 74 transitions, 312 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-23 02:00:09,459 INFO L231 Difference]: Finished difference. Result has 79 places, 74 transitions, 224 flow [2024-11-23 02:00:09,459 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=224, PETRI_PLACES=79, PETRI_TRANSITIONS=74} [2024-11-23 02:00:09,460 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, -4 predicate places. [2024-11-23 02:00:09,460 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 74 transitions, 224 flow [2024-11-23 02:00:09,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 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 02:00:09,460 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:09,461 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-23 02:00:09,470 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 02:00:09,661 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 02:00:09,662 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-23 02:00:09,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:09,663 INFO L85 PathProgramCache]: Analyzing trace with hash -191510237, now seen corresponding path program 1 times [2024-11-23 02:00:09,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:09,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169646887] [2024-11-23 02:00:09,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:09,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:09,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:09,749 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 02:00:09,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:09,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169646887] [2024-11-23 02:00:09,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169646887] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:00:09,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844899761] [2024-11-23 02:00:09,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:09,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:00:09,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:00:09,753 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 02:00:09,755 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 02:00:09,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:09,836 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 02:00:09,836 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:00:09,855 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 02:00:09,856 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:00:09,886 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 02:00:09,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844899761] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:00:09,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:00:09,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-23 02:00:09,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681228963] [2024-11-23 02:00:09,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:00:09,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 02:00:09,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:09,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 02:00:09,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-23 02:00:09,905 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 82 [2024-11-23 02:00:09,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 74 transitions, 224 flow. Second operand has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 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 02:00:09,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:09,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 82 [2024-11-23 02:00:09,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:00:15,827 INFO L124 PetriNetUnfolderBase]: 50187/66675 cut-off events. [2024-11-23 02:00:15,827 INFO L125 PetriNetUnfolderBase]: For 243/243 co-relation queries the response was YES. [2024-11-23 02:00:15,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130252 conditions, 66675 events. 50187/66675 cut-off events. For 243/243 co-relation queries the response was YES. Maximal size of possible extension queue 6940. Compared 483618 event pairs, 36482 based on Foata normal form. 6/28666 useless extension candidates. Maximal degree in co-relation 130110. Up to 62110 conditions per place. [2024-11-23 02:00:16,208 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 49 selfloop transitions, 25 changer transitions 0/92 dead transitions. [2024-11-23 02:00:16,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 92 transitions, 486 flow [2024-11-23 02:00:16,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 02:00:16,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-23 02:00:16,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 300 transitions. [2024-11-23 02:00:16,210 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36585365853658536 [2024-11-23 02:00:16,210 INFO L175 Difference]: Start difference. First operand has 79 places, 74 transitions, 224 flow. Second operand 10 states and 300 transitions. [2024-11-23 02:00:16,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 92 transitions, 486 flow [2024-11-23 02:00:16,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 92 transitions, 428 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-23 02:00:16,213 INFO L231 Difference]: Finished difference. Result has 86 places, 92 transitions, 364 flow [2024-11-23 02:00:16,213 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=364, PETRI_PLACES=86, PETRI_TRANSITIONS=92} [2024-11-23 02:00:16,214 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, 3 predicate places. [2024-11-23 02:00:16,214 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 92 transitions, 364 flow [2024-11-23 02:00:16,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 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 02:00:16,214 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:16,214 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:00:16,223 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 02:00:16,415 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 02:00:16,416 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-23 02:00:16,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:16,416 INFO L85 PathProgramCache]: Analyzing trace with hash -823509527, now seen corresponding path program 1 times [2024-11-23 02:00:16,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:16,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094136756] [2024-11-23 02:00:16,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:16,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:16,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:16,496 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 02:00:16,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:16,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094136756] [2024-11-23 02:00:16,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094136756] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:00:16,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:00:16,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-23 02:00:16,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256749608] [2024-11-23 02:00:16,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:00:16,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 02:00:16,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:16,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 02:00:16,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 02:00:16,512 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 82 [2024-11-23 02:00:16,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 92 transitions, 364 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:16,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:16,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 82 [2024-11-23 02:00:16,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:00:22,056 INFO L124 PetriNetUnfolderBase]: 53011/71517 cut-off events. [2024-11-23 02:00:22,057 INFO L125 PetriNetUnfolderBase]: For 268/268 co-relation queries the response was YES. [2024-11-23 02:00:22,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140635 conditions, 71517 events. 53011/71517 cut-off events. For 268/268 co-relation queries the response was YES. Maximal size of possible extension queue 6873. Compared 537604 event pairs, 9386 based on Foata normal form. 0/33474 useless extension candidates. Maximal degree in co-relation 140568. Up to 52310 conditions per place. [2024-11-23 02:00:22,727 INFO L140 encePairwiseOnDemand]: 78/82 looper letters, 105 selfloop transitions, 2 changer transitions 0/127 dead transitions. [2024-11-23 02:00:22,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 127 transitions, 655 flow [2024-11-23 02:00:22,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 02:00:22,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 02:00:22,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 163 transitions. [2024-11-23 02:00:22,728 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6626016260162602 [2024-11-23 02:00:22,729 INFO L175 Difference]: Start difference. First operand has 86 places, 92 transitions, 364 flow. Second operand 3 states and 163 transitions. [2024-11-23 02:00:22,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 127 transitions, 655 flow [2024-11-23 02:00:22,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 127 transitions, 631 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-23 02:00:22,732 INFO L231 Difference]: Finished difference. Result has 87 places, 93 transitions, 354 flow [2024-11-23 02:00:22,732 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=354, PETRI_PLACES=87, PETRI_TRANSITIONS=93} [2024-11-23 02:00:22,732 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, 4 predicate places. [2024-11-23 02:00:22,733 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 93 transitions, 354 flow [2024-11-23 02:00:22,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:00:22,733 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:00:22,733 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:00:22,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 02:00:22,733 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-23 02:00:22,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:00:22,734 INFO L85 PathProgramCache]: Analyzing trace with hash 241009602, now seen corresponding path program 1 times [2024-11-23 02:00:22,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:00:22,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818330835] [2024-11-23 02:00:22,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:00:22,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:00:22,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:00:22,792 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 02:00:22,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:00:22,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818330835] [2024-11-23 02:00:22,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818330835] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:00:22,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:00:22,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 02:00:22,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867601782] [2024-11-23 02:00:22,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:00:22,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 02:00:22,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:00:22,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 02:00:22,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 02:00:22,799 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 82 [2024-11-23 02:00:22,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 93 transitions, 354 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 02:00:22,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:00:22,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 82 [2024-11-23 02:00:22,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand