./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more-buffer-series2.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 8d3b4a56bf20a7e5cb147a14169234a27b247cfdef3db9f4b8a4f4a17cd6fe47 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 20:46:55,275 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 20:46:55,321 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-12 20:46:55,325 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 20:46:55,325 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 20:46:55,343 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 20:46:55,343 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 20:46:55,344 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 20:46:55,344 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 20:46:55,344 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 20:46:55,345 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 20:46:55,345 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 20:46:55,346 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 20:46:55,346 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 20:46:55,346 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 20:46:55,347 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 20:46:55,347 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 20:46:55,348 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 20:46:55,348 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 20:46:55,348 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 20:46:55,348 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 20:46:55,353 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 20:46:55,353 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 20:46:55,354 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 20:46:55,354 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 20:46:55,354 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-12 20:46:55,354 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 20:46:55,354 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 20:46:55,354 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 20:46:55,354 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 20:46:55,355 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 20:46:55,355 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 20:46:55,355 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 20:46:55,355 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 20:46:55,355 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 20:46:55,355 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 20:46:55,356 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 20:46:55,356 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 20:46:55,357 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 20:46:55,358 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 20:46:55,358 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 20:46:55,361 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 20:46:55,361 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 20:46:55,361 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 20:46:55,361 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d3b4a56bf20a7e5cb147a14169234a27b247cfdef3db9f4b8a4f4a17cd6fe47 [2024-11-12 20:46:55,566 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 20:46:55,584 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 20:46:55,586 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 20:46:55,587 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 20:46:55,587 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 20:46:55,588 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c [2024-11-12 20:46:56,996 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 20:46:57,153 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 20:46:57,153 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c [2024-11-12 20:46:57,162 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1c222818/2273b3211afe4311a07bd4daaab382c6/FLAG235ded195 [2024-11-12 20:46:57,175 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1c222818/2273b3211afe4311a07bd4daaab382c6 [2024-11-12 20:46:57,180 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 20:46:57,181 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 20:46:57,183 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 20:46:57,183 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 20:46:57,188 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 20:46:57,188 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:46:57" (1/1) ... [2024-11-12 20:46:57,189 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62dba76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:46:57, skipping insertion in model container [2024-11-12 20:46:57,189 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:46:57" (1/1) ... [2024-11-12 20:46:57,216 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 20:46:57,405 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:46:57,412 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 20:46:57,445 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:46:57,478 INFO L204 MainTranslator]: Completed translation [2024-11-12 20:46:57,479 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:46:57 WrapperNode [2024-11-12 20:46:57,485 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 20:46:57,490 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 20:46:57,490 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 20:46:57,490 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 20:46:57,495 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:46:57" (1/1) ... [2024-11-12 20:46:57,510 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:46:57" (1/1) ... [2024-11-12 20:46:57,563 INFO L138 Inliner]: procedures = 26, calls = 64, calls flagged for inlining = 23, calls inlined = 29, statements flattened = 386 [2024-11-12 20:46:57,564 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 20:46:57,564 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 20:46:57,564 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 20:46:57,564 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 20:46:57,578 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:46:57" (1/1) ... [2024-11-12 20:46:57,579 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:46:57" (1/1) ... [2024-11-12 20:46:57,587 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:46:57" (1/1) ... [2024-11-12 20:46:57,608 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-12 20:46:57,608 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:46:57" (1/1) ... [2024-11-12 20:46:57,608 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:46:57" (1/1) ... [2024-11-12 20:46:57,617 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:46:57" (1/1) ... [2024-11-12 20:46:57,620 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:46:57" (1/1) ... [2024-11-12 20:46:57,622 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:46:57" (1/1) ... [2024-11-12 20:46:57,623 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:46:57" (1/1) ... [2024-11-12 20:46:57,625 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 20:46:57,626 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 20:46:57,626 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 20:46:57,626 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 20:46:57,627 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:46:57" (1/1) ... [2024-11-12 20:46:57,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 20:46:57,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:46:57,670 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) [2024-11-12 20:46:57,673 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 [2024-11-12 20:46:57,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 20:46:57,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-12 20:46:57,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-12 20:46:57,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-12 20:46:57,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-12 20:46:57,710 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-12 20:46:57,710 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-12 20:46:57,710 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-12 20:46:57,710 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-12 20:46:57,710 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-12 20:46:57,711 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-12 20:46:57,711 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-12 20:46:57,711 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-12 20:46:57,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 20:46:57,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-12 20:46:57,711 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-12 20:46:57,711 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-12 20:46:57,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-12 20:46:57,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 20:46:57,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 20:46:57,713 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 20:46:57,824 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 20:46:57,825 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 20:46:58,284 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 20:46:58,285 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 20:46:58,750 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 20:46:58,750 INFO L316 CfgBuilder]: Removed 7 assume(true) statements. [2024-11-12 20:46:58,751 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:46:58 BoogieIcfgContainer [2024-11-12 20:46:58,751 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 20:46:58,753 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 20:46:58,753 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 20:46:58,756 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 20:46:58,756 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:46:57" (1/3) ... [2024-11-12 20:46:58,757 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51a8a1b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:46:58, skipping insertion in model container [2024-11-12 20:46:58,757 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:46:57" (2/3) ... [2024-11-12 20:46:58,757 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51a8a1b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:46:58, skipping insertion in model container [2024-11-12 20:46:58,757 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:46:58" (3/3) ... [2024-11-12 20:46:58,759 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series2.wvr.c [2024-11-12 20:46:58,772 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 20:46:58,772 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2024-11-12 20:46:58,772 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 20:46:58,920 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-12 20:46:58,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 86 transitions, 200 flow [2024-11-12 20:46:58,996 INFO L124 PetriNetUnfolderBase]: 7/82 cut-off events. [2024-11-12 20:46:58,997 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-12 20:46:59,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 82 events. 7/82 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 251 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2024-11-12 20:46:59,001 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 86 transitions, 200 flow [2024-11-12 20:46:59,005 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 80 transitions, 181 flow [2024-11-12 20:46:59,014 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 20:46:59,019 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;@5d43ab6f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 20:46:59,020 INFO L334 AbstractCegarLoop]: Starting to check reachability of 62 error locations. [2024-11-12 20:46:59,024 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 20:46:59,024 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-12 20:46:59,024 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 20:46:59,024 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:46:59,025 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-12 20:46:59,025 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-11-12 20:46:59,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:46:59,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1245631, now seen corresponding path program 1 times [2024-11-12 20:46:59,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:46:59,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737826902] [2024-11-12 20:46:59,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:46:59,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:46:59,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:46:59,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:46:59,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:46:59,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737826902] [2024-11-12 20:46:59,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737826902] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:46:59,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:46:59,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:46:59,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058395984] [2024-11-12 20:46:59,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:46:59,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:46:59,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:46:59,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:46:59,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:46:59,296 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 86 [2024-11-12 20:46:59,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 80 transitions, 181 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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) [2024-11-12 20:46:59,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:46:59,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 86 [2024-11-12 20:46:59,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:02,540 INFO L124 PetriNetUnfolderBase]: 13776/19475 cut-off events. [2024-11-12 20:47:02,540 INFO L125 PetriNetUnfolderBase]: For 456/456 co-relation queries the response was YES. [2024-11-12 20:47:02,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38854 conditions, 19475 events. 13776/19475 cut-off events. For 456/456 co-relation queries the response was YES. Maximal size of possible extension queue 2661. Compared 152995 event pairs, 13494 based on Foata normal form. 3/9028 useless extension candidates. Maximal degree in co-relation 35198. Up to 18358 conditions per place. [2024-11-12 20:47:02,662 INFO L140 encePairwiseOnDemand]: 59/86 looper letters, 49 selfloop transitions, 10 changer transitions 0/78 dead transitions. [2024-11-12 20:47:02,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 78 transitions, 295 flow [2024-11-12 20:47:02,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:47:02,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:47:02,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 168 transitions. [2024-11-12 20:47:02,672 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4883720930232558 [2024-11-12 20:47:02,675 INFO L175 Difference]: Start difference. First operand has 86 places, 80 transitions, 181 flow. Second operand 4 states and 168 transitions. [2024-11-12 20:47:02,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 78 transitions, 295 flow [2024-11-12 20:47:02,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 78 transitions, 282 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-12 20:47:02,702 INFO L231 Difference]: Finished difference. Result has 74 places, 78 transitions, 234 flow [2024-11-12 20:47:02,703 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=234, PETRI_PLACES=74, PETRI_TRANSITIONS=78} [2024-11-12 20:47:02,707 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, -12 predicate places. [2024-11-12 20:47:02,707 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 78 transitions, 234 flow [2024-11-12 20:47:02,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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) [2024-11-12 20:47:02,708 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:02,708 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-12 20:47:02,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 20:47:02,708 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-11-12 20:47:02,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:02,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1544849614, now seen corresponding path program 1 times [2024-11-12 20:47:02,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:02,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563015465] [2024-11-12 20:47:02,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:02,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:02,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:02,858 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:47:02,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:02,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563015465] [2024-11-12 20:47:02,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563015465] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:47:02,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832803338] [2024-11-12 20:47:02,859 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:02,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:47:02,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:47:02,865 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) [2024-11-12 20:47:02,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 20:47:02,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:02,972 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 20:47:02,975 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:47:03,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:47:03,010 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 20:47:03,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832803338] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:47:03,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 20:47:03,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-12 20:47:03,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278954471] [2024-11-12 20:47:03,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:47:03,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 20:47:03,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:03,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 20:47:03,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-12 20:47:03,031 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 86 [2024-11-12 20:47:03,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 78 transitions, 234 flow. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 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) [2024-11-12 20:47:03,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:03,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 86 [2024-11-12 20:47:03,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:05,499 INFO L124 PetriNetUnfolderBase]: 13776/19472 cut-off events. [2024-11-12 20:47:05,499 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-11-12 20:47:05,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38387 conditions, 19472 events. 13776/19472 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 2661. Compared 152753 event pairs, 13494 based on Foata normal form. 3/9030 useless extension candidates. Maximal degree in co-relation 38314. Up to 18343 conditions per place. [2024-11-12 20:47:05,662 INFO L140 encePairwiseOnDemand]: 73/86 looper letters, 39 selfloop transitions, 17 changer transitions 0/75 dead transitions. [2024-11-12 20:47:05,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 75 transitions, 334 flow [2024-11-12 20:47:05,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 20:47:05,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 20:47:05,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 197 transitions. [2024-11-12 20:47:05,665 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3817829457364341 [2024-11-12 20:47:05,665 INFO L175 Difference]: Start difference. First operand has 74 places, 78 transitions, 234 flow. Second operand 6 states and 197 transitions. [2024-11-12 20:47:05,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 75 transitions, 334 flow [2024-11-12 20:47:05,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 75 transitions, 334 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 20:47:05,668 INFO L231 Difference]: Finished difference. Result has 76 places, 75 transitions, 256 flow [2024-11-12 20:47:05,669 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=256, PETRI_PLACES=76, PETRI_TRANSITIONS=75} [2024-11-12 20:47:05,669 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, -10 predicate places. [2024-11-12 20:47:05,670 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 75 transitions, 256 flow [2024-11-12 20:47:05,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 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) [2024-11-12 20:47:05,670 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:05,670 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-12 20:47:05,688 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-12 20:47:05,871 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 [2024-11-12 20:47:05,873 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-11-12 20:47:05,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:05,874 INFO L85 PathProgramCache]: Analyzing trace with hash -645696505, now seen corresponding path program 1 times [2024-11-12 20:47:05,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:05,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103487177] [2024-11-12 20:47:05,874 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:05,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:05,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:05,950 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:47:05,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:05,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103487177] [2024-11-12 20:47:05,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103487177] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:47:05,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665292826] [2024-11-12 20:47:05,951 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:05,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:47:05,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:47:05,954 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) [2024-11-12 20:47:05,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 20:47:06,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:06,043 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 20:47:06,044 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:47:06,066 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:47:06,067 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:47:06,098 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:47:06,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665292826] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:47:06,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:47:06,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-12 20:47:06,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586101573] [2024-11-12 20:47:06,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:47:06,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-12 20:47:06,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:06,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-12 20:47:06,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-12 20:47:06,134 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 86 [2024-11-12 20:47:06,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 75 transitions, 256 flow. Second operand has 12 states, 12 states have (on average 24.083333333333332) internal successors, (289), 12 states have internal predecessors, (289), 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) [2024-11-12 20:47:06,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:06,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 86 [2024-11-12 20:47:06,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:09,129 INFO L124 PetriNetUnfolderBase]: 13785/19508 cut-off events. [2024-11-12 20:47:09,130 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2024-11-12 20:47:09,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38528 conditions, 19508 events. 13785/19508 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 2661. Compared 153018 event pairs, 13494 based on Foata normal form. 9/9072 useless extension candidates. Maximal degree in co-relation 38316. Up to 18358 conditions per place. [2024-11-12 20:47:09,251 INFO L140 encePairwiseOnDemand]: 73/86 looper letters, 46 selfloop transitions, 37 changer transitions 0/102 dead transitions. [2024-11-12 20:47:09,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 102 transitions, 596 flow [2024-11-12 20:47:09,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 20:47:09,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 20:47:09,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 322 transitions. [2024-11-12 20:47:09,254 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3744186046511628 [2024-11-12 20:47:09,254 INFO L175 Difference]: Start difference. First operand has 76 places, 75 transitions, 256 flow. Second operand 10 states and 322 transitions. [2024-11-12 20:47:09,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 102 transitions, 596 flow [2024-11-12 20:47:09,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 102 transitions, 513 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-11-12 20:47:09,315 INFO L231 Difference]: Finished difference. Result has 83 places, 102 transitions, 471 flow [2024-11-12 20:47:09,315 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=471, PETRI_PLACES=83, PETRI_TRANSITIONS=102} [2024-11-12 20:47:09,316 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, -3 predicate places. [2024-11-12 20:47:09,316 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 102 transitions, 471 flow [2024-11-12 20:47:09,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 24.083333333333332) internal successors, (289), 12 states have internal predecessors, (289), 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) [2024-11-12 20:47:09,316 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:09,317 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:47:09,330 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-12 20:47:09,520 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 [2024-11-12 20:47:09,521 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-11-12 20:47:09,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:09,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1727424304, now seen corresponding path program 1 times [2024-11-12 20:47:09,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:09,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228719334] [2024-11-12 20:47:09,524 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:09,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:09,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:09,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:47:09,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:09,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228719334] [2024-11-12 20:47:09,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228719334] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:47:09,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:47:09,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-12 20:47:09,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129666386] [2024-11-12 20:47:09,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:47:09,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:47:09,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:09,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:47:09,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:47:09,656 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 86 [2024-11-12 20:47:09,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 102 transitions, 471 flow. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:09,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:09,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 86 [2024-11-12 20:47:09,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:13,324 INFO L124 PetriNetUnfolderBase]: 18260/26578 cut-off events. [2024-11-12 20:47:13,324 INFO L125 PetriNetUnfolderBase]: For 115/115 co-relation queries the response was YES. [2024-11-12 20:47:13,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51695 conditions, 26578 events. 18260/26578 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 2902. Compared 212753 event pairs, 5538 based on Foata normal form. 0/14270 useless extension candidates. Maximal degree in co-relation 51597. Up to 16566 conditions per place. [2024-11-12 20:47:13,483 INFO L140 encePairwiseOnDemand]: 82/86 looper letters, 109 selfloop transitions, 2 changer transitions 0/133 dead transitions. [2024-11-12 20:47:13,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 133 transitions, 762 flow [2024-11-12 20:47:13,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:47:13,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:47:13,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 164 transitions. [2024-11-12 20:47:13,485 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6356589147286822 [2024-11-12 20:47:13,485 INFO L175 Difference]: Start difference. First operand has 83 places, 102 transitions, 471 flow. Second operand 3 states and 164 transitions. [2024-11-12 20:47:13,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 133 transitions, 762 flow [2024-11-12 20:47:13,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 133 transitions, 725 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-12 20:47:13,489 INFO L231 Difference]: Finished difference. Result has 84 places, 103 transitions, 448 flow [2024-11-12 20:47:13,489 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=448, PETRI_PLACES=84, PETRI_TRANSITIONS=103} [2024-11-12 20:47:13,490 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, -2 predicate places. [2024-11-12 20:47:13,490 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 103 transitions, 448 flow [2024-11-12 20:47:13,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:13,491 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:13,491 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:47:13,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 20:47:13,491 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-11-12 20:47:13,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:13,492 INFO L85 PathProgramCache]: Analyzing trace with hash -29920813, now seen corresponding path program 1 times [2024-11-12 20:47:13,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:13,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861138926] [2024-11-12 20:47:13,492 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:13,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:13,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:13,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:47:13,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:13,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861138926] [2024-11-12 20:47:13,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861138926] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:47:13,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:47:13,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-12 20:47:13,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664795618] [2024-11-12 20:47:13,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:47:13,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:47:13,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:13,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:47:13,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:47:13,558 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 86 [2024-11-12 20:47:13,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 103 transitions, 448 flow. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2024-11-12 20:47:13,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:13,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 86 [2024-11-12 20:47:13,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:18,198 INFO L124 PetriNetUnfolderBase]: 25850/36748 cut-off events. [2024-11-12 20:47:18,198 INFO L125 PetriNetUnfolderBase]: For 3054/3054 co-relation queries the response was YES. [2024-11-12 20:47:18,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77591 conditions, 36748 events. 25850/36748 cut-off events. For 3054/3054 co-relation queries the response was YES. Maximal size of possible extension queue 3605. Compared 289790 event pairs, 8251 based on Foata normal form. 0/20193 useless extension candidates. Maximal degree in co-relation 77496. Up to 22147 conditions per place. [2024-11-12 20:47:18,426 INFO L140 encePairwiseOnDemand]: 82/86 looper letters, 109 selfloop transitions, 2 changer transitions 0/133 dead transitions. [2024-11-12 20:47:18,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 133 transitions, 745 flow [2024-11-12 20:47:18,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:47:18,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:47:18,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 162 transitions. [2024-11-12 20:47:18,428 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.627906976744186 [2024-11-12 20:47:18,428 INFO L175 Difference]: Start difference. First operand has 84 places, 103 transitions, 448 flow. Second operand 3 states and 162 transitions. [2024-11-12 20:47:18,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 133 transitions, 745 flow [2024-11-12 20:47:18,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 133 transitions, 742 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:47:18,434 INFO L231 Difference]: Finished difference. Result has 86 places, 104 transitions, 460 flow [2024-11-12 20:47:18,434 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=460, PETRI_PLACES=86, PETRI_TRANSITIONS=104} [2024-11-12 20:47:18,435 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, 0 predicate places. [2024-11-12 20:47:18,435 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 104 transitions, 460 flow [2024-11-12 20:47:18,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2024-11-12 20:47:18,435 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:18,435 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:47:18,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-12 20:47:18,435 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-11-12 20:47:18,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:18,435 INFO L85 PathProgramCache]: Analyzing trace with hash -29920817, now seen corresponding path program 1 times [2024-11-12 20:47:18,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:18,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262984193] [2024-11-12 20:47:18,436 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:18,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:18,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:18,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:47:18,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:18,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262984193] [2024-11-12 20:47:18,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262984193] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:47:18,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:47:18,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:47:18,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595199760] [2024-11-12 20:47:18,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:47:18,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:47:18,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:18,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:47:18,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:47:18,535 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 86 [2024-11-12 20:47:18,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 104 transitions, 460 flow. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 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) [2024-11-12 20:47:18,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:18,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 86 [2024-11-12 20:47:18,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:24,137 INFO L124 PetriNetUnfolderBase]: 27719/38507 cut-off events. [2024-11-12 20:47:24,138 INFO L125 PetriNetUnfolderBase]: For 4982/4982 co-relation queries the response was YES. [2024-11-12 20:47:24,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86164 conditions, 38507 events. 27719/38507 cut-off events. For 4982/4982 co-relation queries the response was YES. Maximal size of possible extension queue 3429. Compared 297532 event pairs, 24980 based on Foata normal form. 754/23266 useless extension candidates. Maximal degree in co-relation 86040. Up to 34045 conditions per place. [2024-11-12 20:47:24,403 INFO L140 encePairwiseOnDemand]: 75/86 looper letters, 114 selfloop transitions, 7 changer transitions 1/144 dead transitions. [2024-11-12 20:47:24,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 144 transitions, 863 flow [2024-11-12 20:47:24,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:47:24,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:47:24,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 198 transitions. [2024-11-12 20:47:24,404 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5755813953488372 [2024-11-12 20:47:24,404 INFO L175 Difference]: Start difference. First operand has 86 places, 104 transitions, 460 flow. Second operand 4 states and 198 transitions. [2024-11-12 20:47:24,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 144 transitions, 863 flow [2024-11-12 20:47:24,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 144 transitions, 861 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:47:24,412 INFO L231 Difference]: Finished difference. Result has 89 places, 104 transitions, 489 flow [2024-11-12 20:47:24,413 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=489, PETRI_PLACES=89, PETRI_TRANSITIONS=104} [2024-11-12 20:47:24,415 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, 3 predicate places. [2024-11-12 20:47:24,415 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 104 transitions, 489 flow [2024-11-12 20:47:24,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 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) [2024-11-12 20:47:24,416 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:24,416 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:47:24,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-12 20:47:24,416 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-11-12 20:47:24,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:24,417 INFO L85 PathProgramCache]: Analyzing trace with hash 602029617, now seen corresponding path program 1 times [2024-11-12 20:47:24,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:24,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37463800] [2024-11-12 20:47:24,417 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:24,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:24,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:24,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:47:24,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:24,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37463800] [2024-11-12 20:47:24,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37463800] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:47:24,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:47:24,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:47:24,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552231611] [2024-11-12 20:47:24,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:47:24,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:47:24,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:24,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:47:24,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:47:24,488 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 86 [2024-11-12 20:47:24,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 104 transitions, 489 flow. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:24,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:24,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 86 [2024-11-12 20:47:24,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:28,719 INFO L124 PetriNetUnfolderBase]: 23679/32917 cut-off events. [2024-11-12 20:47:28,719 INFO L125 PetriNetUnfolderBase]: For 7637/7637 co-relation queries the response was YES. [2024-11-12 20:47:28,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79710 conditions, 32917 events. 23679/32917 cut-off events. For 7637/7637 co-relation queries the response was YES. Maximal size of possible extension queue 2981. Compared 251251 event pairs, 21160 based on Foata normal form. 0/20077 useless extension candidates. Maximal degree in co-relation 79584. Up to 31123 conditions per place. [2024-11-12 20:47:29,028 INFO L140 encePairwiseOnDemand]: 84/86 looper letters, 80 selfloop transitions, 1 changer transitions 0/103 dead transitions. [2024-11-12 20:47:29,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 103 transitions, 647 flow [2024-11-12 20:47:29,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:47:29,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:47:29,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 131 transitions. [2024-11-12 20:47:29,033 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5077519379844961 [2024-11-12 20:47:29,033 INFO L175 Difference]: Start difference. First operand has 89 places, 104 transitions, 489 flow. Second operand 3 states and 131 transitions. [2024-11-12 20:47:29,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 103 transitions, 647 flow [2024-11-12 20:47:29,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 103 transitions, 639 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-12 20:47:29,042 INFO L231 Difference]: Finished difference. Result has 89 places, 103 transitions, 479 flow [2024-11-12 20:47:29,042 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=479, PETRI_PLACES=89, PETRI_TRANSITIONS=103} [2024-11-12 20:47:29,043 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, 3 predicate places. [2024-11-12 20:47:29,043 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 103 transitions, 479 flow [2024-11-12 20:47:29,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:47:29,043 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:29,043 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:47:29,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-12 20:47:29,044 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-11-12 20:47:29,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:29,048 INFO L85 PathProgramCache]: Analyzing trace with hash 602029618, now seen corresponding path program 1 times [2024-11-12 20:47:29,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:29,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854945389] [2024-11-12 20:47:29,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:29,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:29,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:29,138 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:47:29,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:29,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854945389] [2024-11-12 20:47:29,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854945389] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:47:29,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868546979] [2024-11-12 20:47:29,139 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:29,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:47:29,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:47:29,144 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) [2024-11-12 20:47:29,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-12 20:47:29,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:29,262 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 20:47:29,264 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:47:29,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:47:29,300 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 20:47:29,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868546979] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:47:29,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 20:47:29,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [2] total 5 [2024-11-12 20:47:29,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341108606] [2024-11-12 20:47:29,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:47:29,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:47:29,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:29,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:47:29,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-12 20:47:29,303 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 86 [2024-11-12 20:47:29,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 103 transitions, 479 flow. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 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) [2024-11-12 20:47:29,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:29,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 86 [2024-11-12 20:47:29,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand