./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-min-array-hom.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 0224e82797c7b26c7800eaf85be5e5678e7961d21aa4e2312eda2860d261b33a --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 16:51:09,216 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 16:51:09,256 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-13 16:51:09,259 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 16:51:09,260 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 16:51:09,277 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 16:51:09,278 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 16:51:09,278 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 16:51:09,280 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 16:51:09,284 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 16:51:09,284 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 16:51:09,285 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 16:51:09,285 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 16:51:09,285 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 16:51:09,285 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 16:51:09,286 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 16:51:09,286 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 16:51:09,286 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 16:51:09,286 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 16:51:09,286 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 16:51:09,286 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 16:51:09,288 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 16:51:09,288 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 16:51:09,288 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 16:51:09,288 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 16:51:09,288 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-13 16:51:09,289 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 16:51:09,289 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 16:51:09,289 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 16:51:09,289 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 16:51:09,289 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 16:51:09,289 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 16:51:09,290 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 16:51:09,290 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 16:51:09,290 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:51:09,290 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 16:51:09,290 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 16:51:09,290 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 16:51:09,291 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 16:51:09,291 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 16:51:09,291 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 16:51:09,293 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 16:51:09,293 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 16:51:09,293 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 16:51:09,294 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0224e82797c7b26c7800eaf85be5e5678e7961d21aa4e2312eda2860d261b33a [2024-10-13 16:51:09,494 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 16:51:09,508 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 16:51:09,510 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 16:51:09,511 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 16:51:09,512 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 16:51:09,512 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c [2024-10-13 16:51:10,847 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 16:51:11,017 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 16:51:11,018 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c [2024-10-13 16:51:11,024 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/227e4102e/f59c278069ff45fbbbf5b8f290e364cb/FLAGf45c99dcd [2024-10-13 16:51:11,438 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/227e4102e/f59c278069ff45fbbbf5b8f290e364cb [2024-10-13 16:51:11,440 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 16:51:11,442 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 16:51:11,444 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 16:51:11,444 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 16:51:11,449 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 16:51:11,449 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:51:11" (1/1) ... [2024-10-13 16:51:11,450 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2448573f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:11, skipping insertion in model container [2024-10-13 16:51:11,450 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:51:11" (1/1) ... [2024-10-13 16:51:11,468 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 16:51:11,608 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:51:11,616 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 16:51:11,635 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:51:11,648 INFO L204 MainTranslator]: Completed translation [2024-10-13 16:51:11,649 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:11 WrapperNode [2024-10-13 16:51:11,649 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 16:51:11,650 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 16:51:11,650 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 16:51:11,650 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 16:51:11,656 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:11" (1/1) ... [2024-10-13 16:51:11,662 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:11" (1/1) ... [2024-10-13 16:51:11,678 INFO L138 Inliner]: procedures = 23, calls = 29, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 91 [2024-10-13 16:51:11,678 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 16:51:11,679 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 16:51:11,679 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 16:51:11,679 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 16:51:11,688 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:11" (1/1) ... [2024-10-13 16:51:11,688 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:11" (1/1) ... [2024-10-13 16:51:11,690 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:11" (1/1) ... [2024-10-13 16:51:11,729 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-13 16:51:11,729 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:11" (1/1) ... [2024-10-13 16:51:11,730 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:11" (1/1) ... [2024-10-13 16:51:11,739 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:11" (1/1) ... [2024-10-13 16:51:11,777 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:11" (1/1) ... [2024-10-13 16:51:11,779 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:11" (1/1) ... [2024-10-13 16:51:11,780 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:11" (1/1) ... [2024-10-13 16:51:11,785 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 16:51:11,786 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 16:51:11,786 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 16:51:11,786 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 16:51:11,787 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:11" (1/1) ... [2024-10-13 16:51:11,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:51:11,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:51:11,830 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 16:51:11,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 16:51:11,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 16:51:11,880 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 16:51:11,881 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 16:51:11,881 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 16:51:11,881 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 16:51:11,881 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-13 16:51:11,881 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-13 16:51:11,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 16:51:11,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 16:51:11,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 16:51:11,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 16:51:11,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-13 16:51:11,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-13 16:51:11,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-13 16:51:11,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 16:51:11,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 16:51:11,884 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 16:51:11,884 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 16:51:11,885 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 16:51:11,992 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 16:51:11,995 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 16:51:12,245 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 16:51:12,246 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 16:51:12,436 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 16:51:12,437 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-13 16:51:12,438 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:51:12 BoogieIcfgContainer [2024-10-13 16:51:12,438 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 16:51:12,440 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 16:51:12,441 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 16:51:12,443 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 16:51:12,444 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 04:51:11" (1/3) ... [2024-10-13 16:51:12,444 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2702925b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:51:12, skipping insertion in model container [2024-10-13 16:51:12,444 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:11" (2/3) ... [2024-10-13 16:51:12,445 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2702925b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:51:12, skipping insertion in model container [2024-10-13 16:51:12,445 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:51:12" (3/3) ... [2024-10-13 16:51:12,446 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-array-hom.wvr.c [2024-10-13 16:51:12,458 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 16:51:12,458 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-10-13 16:51:12,458 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 16:51:12,498 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-13 16:51:12,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 47 transitions, 115 flow [2024-10-13 16:51:12,542 INFO L124 PetriNetUnfolderBase]: 4/44 cut-off events. [2024-10-13 16:51:12,542 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-13 16:51:12,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 44 events. 4/44 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 103 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2024-10-13 16:51:12,545 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 47 transitions, 115 flow [2024-10-13 16:51:12,547 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 42 transitions, 99 flow [2024-10-13 16:51:12,553 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 16:51:12,557 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;@28fee65e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 16:51:12,558 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-10-13 16:51:12,560 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 16:51:12,560 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-13 16:51:12,560 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 16:51:12,561 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:51:12,561 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-13 16:51:12,561 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-13 16:51:12,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:51:12,565 INFO L85 PathProgramCache]: Analyzing trace with hash 465805, now seen corresponding path program 1 times [2024-10-13 16:51:12,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:51:12,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078121761] [2024-10-13 16:51:12,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:12,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:51:12,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:12,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:12,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:51:12,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078121761] [2024-10-13 16:51:12,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078121761] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:51:12,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:51:12,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:51:12,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201070258] [2024-10-13 16:51:12,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:51:12,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:51:12,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:51:12,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:51:12,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:51:12,825 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 47 [2024-10-13 16:51:12,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 99 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:12,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:51:12,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 47 [2024-10-13 16:51:12,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:51:13,029 INFO L124 PetriNetUnfolderBase]: 431/813 cut-off events. [2024-10-13 16:51:13,029 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2024-10-13 16:51:13,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1506 conditions, 813 events. 431/813 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4111 event pairs, 306 based on Foata normal form. 1/754 useless extension candidates. Maximal degree in co-relation 1345. Up to 625 conditions per place. [2024-10-13 16:51:13,037 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 25 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-10-13 16:51:13,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 45 transitions, 163 flow [2024-10-13 16:51:13,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:51:13,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:51:13,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2024-10-13 16:51:13,046 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5691489361702128 [2024-10-13 16:51:13,047 INFO L175 Difference]: Start difference. First operand has 48 places, 42 transitions, 99 flow. Second operand 4 states and 107 transitions. [2024-10-13 16:51:13,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 45 transitions, 163 flow [2024-10-13 16:51:13,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 45 transitions, 154 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 16:51:13,052 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 119 flow [2024-10-13 16:51:13,053 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2024-10-13 16:51:13,056 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 0 predicate places. [2024-10-13 16:51:13,056 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 119 flow [2024-10-13 16:51:13,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:13,057 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:51:13,057 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-13 16:51:13,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 16:51:13,057 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-13 16:51:13,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:51:13,058 INFO L85 PathProgramCache]: Analyzing trace with hash 992352023, now seen corresponding path program 1 times [2024-10-13 16:51:13,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:51:13,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047713144] [2024-10-13 16:51:13,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:13,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:51:13,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:13,144 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:13,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:51:13,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047713144] [2024-10-13 16:51:13,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047713144] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:51:13,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880756069] [2024-10-13 16:51:13,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:13,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:51:13,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:51:13,151 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:51:13,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 16:51:13,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:13,247 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:51:13,251 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:51:13,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:13,301 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:51:13,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880756069] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:51:13,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:51:13,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-13 16:51:13,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920162827] [2024-10-13 16:51:13,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:51:13,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:51:13,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:51:13,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:51:13,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-13 16:51:13,312 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 47 [2024-10-13 16:51:13,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 119 flow. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:13,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:51:13,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 47 [2024-10-13 16:51:13,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:51:13,459 INFO L124 PetriNetUnfolderBase]: 431/812 cut-off events. [2024-10-13 16:51:13,459 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-10-13 16:51:13,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1490 conditions, 812 events. 431/812 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4112 event pairs, 306 based on Foata normal form. 1/754 useless extension candidates. Maximal degree in co-relation 1463. Up to 620 conditions per place. [2024-10-13 16:51:13,468 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 21 selfloop transitions, 7 changer transitions 0/44 dead transitions. [2024-10-13 16:51:13,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 44 transitions, 171 flow [2024-10-13 16:51:13,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 16:51:13,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 16:51:13,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-10-13 16:51:13,471 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5070921985815603 [2024-10-13 16:51:13,471 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 119 flow. Second operand 6 states and 143 transitions. [2024-10-13 16:51:13,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 44 transitions, 171 flow [2024-10-13 16:51:13,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 44 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:51:13,475 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 126 flow [2024-10-13 16:51:13,477 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=126, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2024-10-13 16:51:13,477 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 3 predicate places. [2024-10-13 16:51:13,477 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 126 flow [2024-10-13 16:51:13,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:13,478 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:51:13,478 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-13 16:51:13,493 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 16:51:13,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:51:13,683 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-13 16:51:13,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:51:13,684 INFO L85 PathProgramCache]: Analyzing trace with hash 698142101, now seen corresponding path program 1 times [2024-10-13 16:51:13,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:51:13,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725942298] [2024-10-13 16:51:13,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:13,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:51:13,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:13,756 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:13,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:51:13,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725942298] [2024-10-13 16:51:13,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725942298] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:51:13,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571674972] [2024-10-13 16:51:13,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:13,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:51:13,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:51:13,758 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:51:13,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 16:51:13,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:13,830 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:51:13,831 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:51:13,850 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:13,850 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:51:13,884 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:13,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571674972] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:51:13,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:51:13,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-13 16:51:13,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983842162] [2024-10-13 16:51:13,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:51:13,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 16:51:13,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:51:13,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 16:51:13,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-13 16:51:13,897 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 47 [2024-10-13 16:51:13,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 126 flow. Second operand has 12 states, 12 states have (on average 20.083333333333332) internal successors, (241), 12 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:13,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:51:13,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 47 [2024-10-13 16:51:13,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:51:14,037 INFO L124 PetriNetUnfolderBase]: 434/824 cut-off events. [2024-10-13 16:51:14,038 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-10-13 16:51:14,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1534 conditions, 824 events. 434/824 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4228 event pairs, 306 based on Foata normal form. 3/766 useless extension candidates. Maximal degree in co-relation 1464. Up to 627 conditions per place. [2024-10-13 16:51:14,042 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 24 selfloop transitions, 13 changer transitions 0/53 dead transitions. [2024-10-13 16:51:14,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 53 transitions, 254 flow [2024-10-13 16:51:14,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 16:51:14,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 16:51:14,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 230 transitions. [2024-10-13 16:51:14,045 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2024-10-13 16:51:14,045 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 126 flow. Second operand 10 states and 230 transitions. [2024-10-13 16:51:14,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 53 transitions, 254 flow [2024-10-13 16:51:14,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 53 transitions, 208 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-10-13 16:51:14,047 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 178 flow [2024-10-13 16:51:14,047 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=178, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2024-10-13 16:51:14,047 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 10 predicate places. [2024-10-13 16:51:14,047 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 178 flow [2024-10-13 16:51:14,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 20.083333333333332) internal successors, (241), 12 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:14,048 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:51:14,048 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:51:14,060 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 16:51:14,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-10-13 16:51:14,249 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-13 16:51:14,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:51:14,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1906104600, now seen corresponding path program 1 times [2024-10-13 16:51:14,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:51:14,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692139600] [2024-10-13 16:51:14,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:14,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:51:14,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:14,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:14,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:51:14,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692139600] [2024-10-13 16:51:14,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692139600] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:51:14,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:51:14,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:51:14,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971098994] [2024-10-13 16:51:14,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:51:14,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:51:14,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:51:14,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:51:14,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:51:14,302 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-10-13 16:51:14,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 178 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:14,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:51:14,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-10-13 16:51:14,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:51:14,466 INFO L124 PetriNetUnfolderBase]: 1064/1841 cut-off events. [2024-10-13 16:51:14,466 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-10-13 16:51:14,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3487 conditions, 1841 events. 1064/1841 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 10092 event pairs, 449 based on Foata normal form. 42/1787 useless extension candidates. Maximal degree in co-relation 3453. Up to 1096 conditions per place. [2024-10-13 16:51:14,473 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 65 selfloop transitions, 4 changer transitions 0/83 dead transitions. [2024-10-13 16:51:14,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 83 transitions, 382 flow [2024-10-13 16:51:14,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:51:14,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:51:14,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2024-10-13 16:51:14,475 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6968085106382979 [2024-10-13 16:51:14,475 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 178 flow. Second operand 4 states and 131 transitions. [2024-10-13 16:51:14,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 83 transitions, 382 flow [2024-10-13 16:51:14,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 83 transitions, 371 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-13 16:51:14,477 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 196 flow [2024-10-13 16:51:14,477 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=196, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2024-10-13 16:51:14,478 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 13 predicate places. [2024-10-13 16:51:14,478 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 196 flow [2024-10-13 16:51:14,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:14,478 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:51:14,479 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:51:14,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 16:51:14,479 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-13 16:51:14,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:51:14,479 INFO L85 PathProgramCache]: Analyzing trace with hash -412023367, now seen corresponding path program 1 times [2024-10-13 16:51:14,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:51:14,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377532707] [2024-10-13 16:51:14,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:14,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:51:14,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:14,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:14,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:51:14,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377532707] [2024-10-13 16:51:14,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377532707] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:51:14,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:51:14,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:51:14,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777598740] [2024-10-13 16:51:14,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:51:14,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:51:14,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:51:14,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:51:14,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:51:14,526 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-10-13 16:51:14,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 196 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:14,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:51:14,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-10-13 16:51:14,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:51:14,749 INFO L124 PetriNetUnfolderBase]: 1708/2786 cut-off events. [2024-10-13 16:51:14,749 INFO L125 PetriNetUnfolderBase]: For 769/1064 co-relation queries the response was YES. [2024-10-13 16:51:14,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6045 conditions, 2786 events. 1708/2786 cut-off events. For 769/1064 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 15424 event pairs, 787 based on Foata normal form. 163/2832 useless extension candidates. Maximal degree in co-relation 6009. Up to 1698 conditions per place. [2024-10-13 16:51:14,762 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 69 selfloop transitions, 4 changer transitions 0/88 dead transitions. [2024-10-13 16:51:14,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 88 transitions, 438 flow [2024-10-13 16:51:14,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:51:14,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:51:14,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2024-10-13 16:51:14,763 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6861702127659575 [2024-10-13 16:51:14,763 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 196 flow. Second operand 4 states and 129 transitions. [2024-10-13 16:51:14,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 88 transitions, 438 flow [2024-10-13 16:51:14,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 88 transitions, 429 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:51:14,766 INFO L231 Difference]: Finished difference. Result has 65 places, 59 transitions, 222 flow [2024-10-13 16:51:14,766 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=222, PETRI_PLACES=65, PETRI_TRANSITIONS=59} [2024-10-13 16:51:14,766 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 17 predicate places. [2024-10-13 16:51:14,767 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 59 transitions, 222 flow [2024-10-13 16:51:14,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:14,767 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:51:14,767 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:51:14,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 16:51:14,767 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-13 16:51:14,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:51:14,768 INFO L85 PathProgramCache]: Analyzing trace with hash -349493877, now seen corresponding path program 1 times [2024-10-13 16:51:14,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:51:14,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093838198] [2024-10-13 16:51:14,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:14,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:51:14,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:14,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:14,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:51:14,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093838198] [2024-10-13 16:51:14,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093838198] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:51:14,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:51:14,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:51:14,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642893947] [2024-10-13 16:51:14,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:51:14,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:51:14,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:51:14,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:51:14,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 16:51:14,820 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 47 [2024-10-13 16:51:14,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 59 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:14,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:51:14,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 47 [2024-10-13 16:51:14,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:51:14,968 INFO L124 PetriNetUnfolderBase]: 1059/1948 cut-off events. [2024-10-13 16:51:14,968 INFO L125 PetriNetUnfolderBase]: For 773/1030 co-relation queries the response was YES. [2024-10-13 16:51:14,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4364 conditions, 1948 events. 1059/1948 cut-off events. For 773/1030 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 11484 event pairs, 724 based on Foata normal form. 92/1904 useless extension candidates. Maximal degree in co-relation 4333. Up to 1469 conditions per place. [2024-10-13 16:51:14,976 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 37 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2024-10-13 16:51:14,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 58 transitions, 297 flow [2024-10-13 16:51:14,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:51:14,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:51:14,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 90 transitions. [2024-10-13 16:51:14,978 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6382978723404256 [2024-10-13 16:51:14,978 INFO L175 Difference]: Start difference. First operand has 65 places, 59 transitions, 222 flow. Second operand 3 states and 90 transitions. [2024-10-13 16:51:14,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 58 transitions, 297 flow [2024-10-13 16:51:14,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 58 transitions, 294 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:51:14,980 INFO L231 Difference]: Finished difference. Result has 66 places, 58 transitions, 220 flow [2024-10-13 16:51:14,980 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=66, PETRI_TRANSITIONS=58} [2024-10-13 16:51:14,980 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 18 predicate places. [2024-10-13 16:51:14,981 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 58 transitions, 220 flow [2024-10-13 16:51:14,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:14,981 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:51:14,981 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:51:14,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 16:51:14,981 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-13 16:51:14,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:51:14,982 INFO L85 PathProgramCache]: Analyzing trace with hash 55412033, now seen corresponding path program 1 times [2024-10-13 16:51:14,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:51:14,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161438663] [2024-10-13 16:51:14,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:14,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:51:14,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:15,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:51:15,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:51:15,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161438663] [2024-10-13 16:51:15,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161438663] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:51:15,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:51:15,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 16:51:15,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447206841] [2024-10-13 16:51:15,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:51:15,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:51:15,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:51:15,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:51:15,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 16:51:15,050 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-10-13 16:51:15,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 58 transitions, 220 flow. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:15,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:51:15,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-10-13 16:51:15,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:51:15,266 INFO L124 PetriNetUnfolderBase]: 1495/2340 cut-off events. [2024-10-13 16:51:15,266 INFO L125 PetriNetUnfolderBase]: For 918/1325 co-relation queries the response was YES. [2024-10-13 16:51:15,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5474 conditions, 2340 events. 1495/2340 cut-off events. For 918/1325 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 11996 event pairs, 388 based on Foata normal form. 220/2436 useless extension candidates. Maximal degree in co-relation 5450. Up to 786 conditions per place. [2024-10-13 16:51:15,278 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 63 selfloop transitions, 8 changer transitions 0/87 dead transitions. [2024-10-13 16:51:15,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 87 transitions, 464 flow [2024-10-13 16:51:15,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:51:15,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:51:15,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 139 transitions. [2024-10-13 16:51:15,280 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5914893617021276 [2024-10-13 16:51:15,280 INFO L175 Difference]: Start difference. First operand has 66 places, 58 transitions, 220 flow. Second operand 5 states and 139 transitions. [2024-10-13 16:51:15,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 87 transitions, 464 flow [2024-10-13 16:51:15,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 87 transitions, 460 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 16:51:15,283 INFO L231 Difference]: Finished difference. Result has 67 places, 57 transitions, 230 flow [2024-10-13 16:51:15,283 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=230, PETRI_PLACES=67, PETRI_TRANSITIONS=57} [2024-10-13 16:51:15,284 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 19 predicate places. [2024-10-13 16:51:15,284 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 57 transitions, 230 flow [2024-10-13 16:51:15,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:15,285 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:51:15,285 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-13 16:51:15,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 16:51:15,285 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-13 16:51:15,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:51:15,285 INFO L85 PathProgramCache]: Analyzing trace with hash -670343073, now seen corresponding path program 2 times [2024-10-13 16:51:15,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:51:15,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966909954] [2024-10-13 16:51:15,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:15,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:51:15,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:15,444 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:15,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:51:15,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966909954] [2024-10-13 16:51:15,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966909954] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:51:15,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035835627] [2024-10-13 16:51:15,445 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:51:15,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:51:15,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:51:15,449 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:51:15,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 16:51:15,519 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 16:51:15,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:51:15,524 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 16:51:15,525 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:51:15,575 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-13 16:51:15,575 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:51:15,602 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-13 16:51:15,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035835627] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:51:15,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:51:15,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-10-13 16:51:15,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715797493] [2024-10-13 16:51:15,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:51:15,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 16:51:15,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:51:15,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 16:51:15,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-13 16:51:15,620 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 47 [2024-10-13 16:51:15,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 57 transitions, 230 flow. Second operand has 14 states, 14 states have (on average 20.142857142857142) internal successors, (282), 14 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:15,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:51:15,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 47 [2024-10-13 16:51:15,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:51:15,884 INFO L124 PetriNetUnfolderBase]: 1060/1879 cut-off events. [2024-10-13 16:51:15,884 INFO L125 PetriNetUnfolderBase]: For 805/1062 co-relation queries the response was YES. [2024-10-13 16:51:15,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4485 conditions, 1879 events. 1060/1879 cut-off events. For 805/1062 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 10630 event pairs, 724 based on Foata normal form. 93/1909 useless extension candidates. Maximal degree in co-relation 4446. Up to 1461 conditions per place. [2024-10-13 16:51:15,894 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 24 selfloop transitions, 18 changer transitions 0/59 dead transitions. [2024-10-13 16:51:15,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 59 transitions, 322 flow [2024-10-13 16:51:15,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 16:51:15,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-13 16:51:15,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 306 transitions. [2024-10-13 16:51:15,896 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46504559270516715 [2024-10-13 16:51:15,896 INFO L175 Difference]: Start difference. First operand has 67 places, 57 transitions, 230 flow. Second operand 14 states and 306 transitions. [2024-10-13 16:51:15,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 59 transitions, 322 flow [2024-10-13 16:51:15,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 59 transitions, 292 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-10-13 16:51:15,900 INFO L231 Difference]: Finished difference. Result has 71 places, 59 transitions, 244 flow [2024-10-13 16:51:15,900 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=244, PETRI_PLACES=71, PETRI_TRANSITIONS=59} [2024-10-13 16:51:15,901 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 23 predicate places. [2024-10-13 16:51:15,901 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 59 transitions, 244 flow [2024-10-13 16:51:15,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 20.142857142857142) internal successors, (282), 14 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:15,901 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:51:15,901 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:51:15,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-13 16:51:16,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:51:16,107 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-13 16:51:16,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:51:16,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1717773527, now seen corresponding path program 1 times [2024-10-13 16:51:16,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:51:16,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929132132] [2024-10-13 16:51:16,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:16,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:51:16,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:16,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:16,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:51:16,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929132132] [2024-10-13 16:51:16,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929132132] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:51:16,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564196471] [2024-10-13 16:51:16,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:16,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:51:16,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:51:16,258 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:51:16,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 16:51:16,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:16,317 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:51:16,317 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:51:16,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:51:16,421 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:51:16,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564196471] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:51:16,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:51:16,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2024-10-13 16:51:16,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207706732] [2024-10-13 16:51:16,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:51:16,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:51:16,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:51:16,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:51:16,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-10-13 16:51:16,456 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-13 16:51:16,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 59 transitions, 244 flow. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:16,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:51:16,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-13 16:51:16,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:51:16,741 INFO L124 PetriNetUnfolderBase]: 1793/2640 cut-off events. [2024-10-13 16:51:16,741 INFO L125 PetriNetUnfolderBase]: For 1058/1534 co-relation queries the response was YES. [2024-10-13 16:51:16,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6285 conditions, 2640 events. 1793/2640 cut-off events. For 1058/1534 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 12656 event pairs, 556 based on Foata normal form. 166/2599 useless extension candidates. Maximal degree in co-relation 6195. Up to 1163 conditions per place. [2024-10-13 16:51:16,757 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 62 selfloop transitions, 11 changer transitions 3/90 dead transitions. [2024-10-13 16:51:16,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 90 transitions, 502 flow [2024-10-13 16:51:16,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 16:51:16,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 16:51:16,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2024-10-13 16:51:16,759 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5425531914893617 [2024-10-13 16:51:16,759 INFO L175 Difference]: Start difference. First operand has 71 places, 59 transitions, 244 flow. Second operand 6 states and 153 transitions. [2024-10-13 16:51:16,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 90 transitions, 502 flow [2024-10-13 16:51:16,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 90 transitions, 434 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-10-13 16:51:16,763 INFO L231 Difference]: Finished difference. Result has 65 places, 59 transitions, 214 flow [2024-10-13 16:51:16,764 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=214, PETRI_PLACES=65, PETRI_TRANSITIONS=59} [2024-10-13 16:51:16,765 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 17 predicate places. [2024-10-13 16:51:16,765 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 59 transitions, 214 flow [2024-10-13 16:51:16,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:16,765 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:51:16,765 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:51:16,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-13 16:51:16,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:51:16,966 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-13 16:51:16,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:51:16,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1666459564, now seen corresponding path program 1 times [2024-10-13 16:51:16,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:51:16,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565496402] [2024-10-13 16:51:16,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:16,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:51:16,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:17,031 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:51:17,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:51:17,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565496402] [2024-10-13 16:51:17,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565496402] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:51:17,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994570565] [2024-10-13 16:51:17,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:17,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:51:17,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:51:17,033 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:51:17,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 16:51:17,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:17,094 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 16:51:17,095 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:51:17,268 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:17,268 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:51:17,431 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:17,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994570565] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:51:17,432 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:51:17,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-10-13 16:51:17,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722052929] [2024-10-13 16:51:17,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:51:17,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-13 16:51:17,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:51:17,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-13 16:51:17,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-10-13 16:51:17,633 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-13 16:51:17,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 59 transitions, 214 flow. Second operand has 19 states, 19 states have (on average 17.0) internal successors, (323), 19 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:17,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:51:17,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-13 16:51:17,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:51:18,549 INFO L124 PetriNetUnfolderBase]: 3700/5788 cut-off events. [2024-10-13 16:51:18,549 INFO L125 PetriNetUnfolderBase]: For 4012/4659 co-relation queries the response was YES. [2024-10-13 16:51:18,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15219 conditions, 5788 events. 3700/5788 cut-off events. For 4012/4659 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 34140 event pairs, 618 based on Foata normal form. 329/5982 useless extension candidates. Maximal degree in co-relation 8934. Up to 860 conditions per place. [2024-10-13 16:51:18,577 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 154 selfloop transitions, 25 changer transitions 6/197 dead transitions. [2024-10-13 16:51:18,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 197 transitions, 1080 flow [2024-10-13 16:51:18,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 16:51:18,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-13 16:51:18,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 361 transitions. [2024-10-13 16:51:18,579 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5486322188449848 [2024-10-13 16:51:18,579 INFO L175 Difference]: Start difference. First operand has 65 places, 59 transitions, 214 flow. Second operand 14 states and 361 transitions. [2024-10-13 16:51:18,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 197 transitions, 1080 flow [2024-10-13 16:51:18,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 197 transitions, 1063 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:51:18,587 INFO L231 Difference]: Finished difference. Result has 74 places, 63 transitions, 277 flow [2024-10-13 16:51:18,588 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=277, PETRI_PLACES=74, PETRI_TRANSITIONS=63} [2024-10-13 16:51:18,588 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 26 predicate places. [2024-10-13 16:51:18,588 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 63 transitions, 277 flow [2024-10-13 16:51:18,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 17.0) internal successors, (323), 19 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:18,589 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:51:18,589 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:51:18,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-13 16:51:18,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-13 16:51:18,791 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-13 16:51:18,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:51:18,792 INFO L85 PathProgramCache]: Analyzing trace with hash 2136954564, now seen corresponding path program 1 times [2024-10-13 16:51:18,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:51:18,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887159869] [2024-10-13 16:51:18,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:18,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:51:18,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:18,932 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 16:51:18,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:51:18,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887159869] [2024-10-13 16:51:18,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887159869] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:51:18,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105100503] [2024-10-13 16:51:18,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:18,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:51:18,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:51:18,935 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:51:18,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-13 16:51:18,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:18,991 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-13 16:51:18,993 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:51:19,051 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 16:51:19,053 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:51:19,115 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 16:51:19,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105100503] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:51:19,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:51:19,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2024-10-13 16:51:19,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493309727] [2024-10-13 16:51:19,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:51:19,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-13 16:51:19,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:51:19,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-13 16:51:19,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-10-13 16:51:19,198 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-10-13 16:51:19,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 63 transitions, 277 flow. Second operand has 16 states, 16 states have (on average 19.6875) internal successors, (315), 16 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:19,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:51:19,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-10-13 16:51:19,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:51:19,564 INFO L124 PetriNetUnfolderBase]: 2376/3951 cut-off events. [2024-10-13 16:51:19,565 INFO L125 PetriNetUnfolderBase]: For 3662/3840 co-relation queries the response was YES. [2024-10-13 16:51:19,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10918 conditions, 3951 events. 2376/3951 cut-off events. For 3662/3840 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 23066 event pairs, 1687 based on Foata normal form. 70/3920 useless extension candidates. Maximal degree in co-relation 6998. Up to 2669 conditions per place. [2024-10-13 16:51:19,582 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 30 selfloop transitions, 12 changer transitions 35/92 dead transitions. [2024-10-13 16:51:19,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 92 transitions, 541 flow [2024-10-13 16:51:19,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 16:51:19,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-13 16:51:19,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-10-13 16:51:19,583 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5398936170212766 [2024-10-13 16:51:19,583 INFO L175 Difference]: Start difference. First operand has 74 places, 63 transitions, 277 flow. Second operand 8 states and 203 transitions. [2024-10-13 16:51:19,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 92 transitions, 541 flow [2024-10-13 16:51:19,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 92 transitions, 497 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-10-13 16:51:19,589 INFO L231 Difference]: Finished difference. Result has 76 places, 57 transitions, 241 flow [2024-10-13 16:51:19,589 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=241, PETRI_PLACES=76, PETRI_TRANSITIONS=57} [2024-10-13 16:51:19,589 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 28 predicate places. [2024-10-13 16:51:19,589 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 57 transitions, 241 flow [2024-10-13 16:51:19,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 19.6875) internal successors, (315), 16 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:19,590 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:51:19,590 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-13 16:51:19,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-13 16:51:19,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:51:19,795 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-13 16:51:19,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:51:19,795 INFO L85 PathProgramCache]: Analyzing trace with hash 121885124, now seen corresponding path program 1 times [2024-10-13 16:51:19,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:51:19,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147025373] [2024-10-13 16:51:19,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:19,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:51:19,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:19,855 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 16:51:19,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:51:19,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147025373] [2024-10-13 16:51:19,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147025373] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:51:19,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082056365] [2024-10-13 16:51:19,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:19,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:51:19,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:51:19,859 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:51:19,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-13 16:51:19,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:19,912 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:51:19,913 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:51:19,935 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 16:51:19,935 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:51:19,961 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 16:51:19,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082056365] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:51:19,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:51:19,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-13 16:51:19,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415787183] [2024-10-13 16:51:19,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:51:19,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 16:51:19,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:51:19,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 16:51:19,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-13 16:51:19,975 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-10-13 16:51:19,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 57 transitions, 241 flow. Second operand has 12 states, 12 states have (on average 19.916666666666668) internal successors, (239), 12 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:19,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:51:19,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-10-13 16:51:19,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:51:20,630 INFO L124 PetriNetUnfolderBase]: 4141/6599 cut-off events. [2024-10-13 16:51:20,630 INFO L125 PetriNetUnfolderBase]: For 5702/6805 co-relation queries the response was YES. [2024-10-13 16:51:20,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17877 conditions, 6599 events. 4141/6599 cut-off events. For 5702/6805 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 37483 event pairs, 847 based on Foata normal form. 536/7106 useless extension candidates. Maximal degree in co-relation 17801. Up to 2281 conditions per place. [2024-10-13 16:51:20,659 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 172 selfloop transitions, 13 changer transitions 0/198 dead transitions. [2024-10-13 16:51:20,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 198 transitions, 1149 flow [2024-10-13 16:51:20,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 16:51:20,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 16:51:20,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 328 transitions. [2024-10-13 16:51:20,661 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6978723404255319 [2024-10-13 16:51:20,661 INFO L175 Difference]: Start difference. First operand has 76 places, 57 transitions, 241 flow. Second operand 10 states and 328 transitions. [2024-10-13 16:51:20,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 198 transitions, 1149 flow [2024-10-13 16:51:20,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 198 transitions, 1070 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-10-13 16:51:20,668 INFO L231 Difference]: Finished difference. Result has 74 places, 66 transitions, 280 flow [2024-10-13 16:51:20,669 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=280, PETRI_PLACES=74, PETRI_TRANSITIONS=66} [2024-10-13 16:51:20,669 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 26 predicate places. [2024-10-13 16:51:20,669 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 66 transitions, 280 flow [2024-10-13 16:51:20,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.916666666666668) internal successors, (239), 12 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:20,669 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:51:20,669 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:51:20,683 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-13 16:51:20,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:51:20,870 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-13 16:51:20,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:51:20,870 INFO L85 PathProgramCache]: Analyzing trace with hash -2119395846, now seen corresponding path program 2 times [2024-10-13 16:51:20,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:51:20,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106638] [2024-10-13 16:51:20,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:20,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:51:20,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:20,947 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 16:51:20,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:51:20,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106638] [2024-10-13 16:51:20,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106638] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:51:20,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782655364] [2024-10-13 16:51:20,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:51:20,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:51:20,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:51:20,952 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:51:20,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-13 16:51:21,010 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 16:51:21,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:51:21,011 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 16:51:21,012 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:51:21,036 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 16:51:21,037 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:51:21,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782655364] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:51:21,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:51:21,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-10-13 16:51:21,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716948052] [2024-10-13 16:51:21,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:51:21,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:51:21,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:51:21,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:51:21,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-13 16:51:21,047 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-13 16:51:21,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 66 transitions, 280 flow. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:21,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:51:21,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-13 16:51:21,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:51:21,550 INFO L124 PetriNetUnfolderBase]: 5266/7821 cut-off events. [2024-10-13 16:51:21,550 INFO L125 PetriNetUnfolderBase]: For 9063/9666 co-relation queries the response was YES. [2024-10-13 16:51:21,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22583 conditions, 7821 events. 5266/7821 cut-off events. For 9063/9666 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 42910 event pairs, 685 based on Foata normal form. 278/7855 useless extension candidates. Maximal degree in co-relation 18290. Up to 3135 conditions per place. [2024-10-13 16:51:21,585 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 86 selfloop transitions, 7 changer transitions 0/107 dead transitions. [2024-10-13 16:51:21,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 107 transitions, 678 flow [2024-10-13 16:51:21,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:51:21,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:51:21,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2024-10-13 16:51:21,586 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6329787234042553 [2024-10-13 16:51:21,586 INFO L175 Difference]: Start difference. First operand has 74 places, 66 transitions, 280 flow. Second operand 4 states and 119 transitions. [2024-10-13 16:51:21,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 107 transitions, 678 flow [2024-10-13 16:51:21,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 107 transitions, 649 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-10-13 16:51:21,599 INFO L231 Difference]: Finished difference. Result has 74 places, 65 transitions, 279 flow [2024-10-13 16:51:21,600 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=279, PETRI_PLACES=74, PETRI_TRANSITIONS=65} [2024-10-13 16:51:21,600 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 26 predicate places. [2024-10-13 16:51:21,600 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 65 transitions, 279 flow [2024-10-13 16:51:21,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:21,600 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:51:21,600 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:51:21,616 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-13 16:51:21,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-13 16:51:21,802 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-13 16:51:21,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:51:21,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1276761291, now seen corresponding path program 1 times [2024-10-13 16:51:21,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:51:21,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228331716] [2024-10-13 16:51:21,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:21,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:51:21,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:21,847 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 16:51:21,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:51:21,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228331716] [2024-10-13 16:51:21,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228331716] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:51:21,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237885440] [2024-10-13 16:51:21,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:21,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:51:21,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:51:21,849 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:51:21,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-13 16:51:21,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:21,922 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-13 16:51:21,923 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:51:22,120 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:22,120 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:51:22,278 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:22,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237885440] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:51:22,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:51:22,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10, 10] total 24 [2024-10-13 16:51:22,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847809805] [2024-10-13 16:51:22,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:51:22,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-13 16:51:22,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:51:22,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-13 16:51:22,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2024-10-13 16:51:22,422 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-13 16:51:22,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 65 transitions, 279 flow. Second operand has 24 states, 24 states have (on average 17.041666666666668) internal successors, (409), 24 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:22,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:51:22,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-13 16:51:22,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:51:23,940 INFO L124 PetriNetUnfolderBase]: 10706/16024 cut-off events. [2024-10-13 16:51:23,940 INFO L125 PetriNetUnfolderBase]: For 19687/20879 co-relation queries the response was YES. [2024-10-13 16:51:23,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47568 conditions, 16024 events. 10706/16024 cut-off events. For 19687/20879 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 99288 event pairs, 2903 based on Foata normal form. 492/16482 useless extension candidates. Maximal degree in co-relation 38672. Up to 4284 conditions per place. [2024-10-13 16:51:24,022 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 223 selfloop transitions, 25 changer transitions 9/271 dead transitions. [2024-10-13 16:51:24,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 271 transitions, 1754 flow [2024-10-13 16:51:24,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-13 16:51:24,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-13 16:51:24,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 418 transitions. [2024-10-13 16:51:24,024 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.523153942428035 [2024-10-13 16:51:24,024 INFO L175 Difference]: Start difference. First operand has 74 places, 65 transitions, 279 flow. Second operand 17 states and 418 transitions. [2024-10-13 16:51:24,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 271 transitions, 1754 flow [2024-10-13 16:51:24,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 271 transitions, 1724 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:51:24,060 INFO L231 Difference]: Finished difference. Result has 90 places, 73 transitions, 366 flow [2024-10-13 16:51:24,060 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=366, PETRI_PLACES=90, PETRI_TRANSITIONS=73} [2024-10-13 16:51:24,061 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 42 predicate places. [2024-10-13 16:51:24,061 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 73 transitions, 366 flow [2024-10-13 16:51:24,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 17.041666666666668) internal successors, (409), 24 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:24,061 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:51:24,061 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:51:24,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-13 16:51:24,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-13 16:51:24,267 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-13 16:51:24,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:51:24,267 INFO L85 PathProgramCache]: Analyzing trace with hash -2129131520, now seen corresponding path program 2 times [2024-10-13 16:51:24,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:51:24,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99796885] [2024-10-13 16:51:24,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:24,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:51:24,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:24,461 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 9 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:24,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:51:24,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99796885] [2024-10-13 16:51:24,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99796885] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:51:24,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430517930] [2024-10-13 16:51:24,462 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:51:24,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:51:24,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:51:24,465 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:51:24,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-13 16:51:24,529 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 16:51:24,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:51:24,530 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 16:51:24,531 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:51:24,609 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-13 16:51:24,609 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:51:24,654 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-13 16:51:24,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430517930] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:51:24,654 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:51:24,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 3, 3] total 17 [2024-10-13 16:51:24,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7414966] [2024-10-13 16:51:24,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:51:24,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-13 16:51:24,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:51:24,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-13 16:51:24,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2024-10-13 16:51:24,783 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-13 16:51:24,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 73 transitions, 366 flow. Second operand has 18 states, 18 states have (on average 17.22222222222222) internal successors, (310), 18 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:24,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:51:24,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-13 16:51:24,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:51:27,277 INFO L124 PetriNetUnfolderBase]: 15477/22812 cut-off events. [2024-10-13 16:51:27,278 INFO L125 PetriNetUnfolderBase]: For 30264/32068 co-relation queries the response was YES. [2024-10-13 16:51:27,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70700 conditions, 22812 events. 15477/22812 cut-off events. For 30264/32068 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 147453 event pairs, 3203 based on Foata normal form. 418/23048 useless extension candidates. Maximal degree in co-relation 57481. Up to 4389 conditions per place. [2024-10-13 16:51:27,416 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 198 selfloop transitions, 32 changer transitions 12/256 dead transitions. [2024-10-13 16:51:27,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 256 transitions, 1715 flow [2024-10-13 16:51:27,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-13 16:51:27,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-13 16:51:27,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 420 transitions. [2024-10-13 16:51:27,420 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49645390070921985 [2024-10-13 16:51:27,420 INFO L175 Difference]: Start difference. First operand has 90 places, 73 transitions, 366 flow. Second operand 18 states and 420 transitions. [2024-10-13 16:51:27,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 256 transitions, 1715 flow [2024-10-13 16:51:27,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 256 transitions, 1669 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-10-13 16:51:27,505 INFO L231 Difference]: Finished difference. Result has 101 places, 81 transitions, 459 flow [2024-10-13 16:51:27,507 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=459, PETRI_PLACES=101, PETRI_TRANSITIONS=81} [2024-10-13 16:51:27,508 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 53 predicate places. [2024-10-13 16:51:27,508 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 81 transitions, 459 flow [2024-10-13 16:51:27,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 17.22222222222222) internal successors, (310), 18 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:27,508 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:51:27,508 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1] [2024-10-13 16:51:27,537 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-13 16:51:27,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-13 16:51:27,709 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-13 16:51:27,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:51:27,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1543289662, now seen corresponding path program 2 times [2024-10-13 16:51:27,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:51:27,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801652083] [2024-10-13 16:51:27,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:27,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:51:27,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:27,850 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-10-13 16:51:27,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:51:27,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801652083] [2024-10-13 16:51:27,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801652083] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:51:27,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940436326] [2024-10-13 16:51:27,851 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:51:27,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:51:27,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:51:27,853 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:51:27,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-13 16:51:27,908 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 16:51:27,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:51:27,909 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 16:51:27,910 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:51:27,956 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-10-13 16:51:27,956 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:51:27,997 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-10-13 16:51:27,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940436326] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:51:27,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:51:27,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 3, 3] total 11 [2024-10-13 16:51:27,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949612350] [2024-10-13 16:51:27,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:51:27,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-13 16:51:27,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:51:27,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-13 16:51:27,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-10-13 16:51:28,046 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-13 16:51:28,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 81 transitions, 459 flow. Second operand has 13 states, 13 states have (on average 17.307692307692307) internal successors, (225), 13 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:28,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:51:28,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-13 16:51:28,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:51:30,514 INFO L124 PetriNetUnfolderBase]: 16638/25416 cut-off events. [2024-10-13 16:51:30,515 INFO L125 PetriNetUnfolderBase]: For 51469/53176 co-relation queries the response was YES. [2024-10-13 16:51:30,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80801 conditions, 25416 events. 16638/25416 cut-off events. For 51469/53176 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 171570 event pairs, 3246 based on Foata normal form. 794/26036 useless extension candidates. Maximal degree in co-relation 62157. Up to 6453 conditions per place. [2024-10-13 16:51:30,605 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 0 selfloop transitions, 0 changer transitions 269/269 dead transitions. [2024-10-13 16:51:30,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 269 transitions, 1985 flow [2024-10-13 16:51:30,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-13 16:51:30,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-13 16:51:30,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 395 transitions. [2024-10-13 16:51:30,608 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5252659574468085 [2024-10-13 16:51:30,608 INFO L175 Difference]: Start difference. First operand has 101 places, 81 transitions, 459 flow. Second operand 16 states and 395 transitions. [2024-10-13 16:51:30,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 269 transitions, 1985 flow [2024-10-13 16:51:30,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 269 transitions, 1922 flow, removed 15 selfloop flow, removed 12 redundant places. [2024-10-13 16:51:30,733 INFO L231 Difference]: Finished difference. Result has 103 places, 0 transitions, 0 flow [2024-10-13 16:51:30,733 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=0, PETRI_PLACES=103, PETRI_TRANSITIONS=0} [2024-10-13 16:51:30,734 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 55 predicate places. [2024-10-13 16:51:30,734 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 0 transitions, 0 flow [2024-10-13 16:51:30,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 17.307692307692307) internal successors, (225), 13 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:30,736 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 17 remaining) [2024-10-13 16:51:30,737 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2024-10-13 16:51:30,737 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2024-10-13 16:51:30,737 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2024-10-13 16:51:30,737 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2024-10-13 16:51:30,737 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2024-10-13 16:51:30,738 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2024-10-13 16:51:30,738 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2024-10-13 16:51:30,738 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 17 remaining) [2024-10-13 16:51:30,738 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 17 remaining) [2024-10-13 16:51:30,738 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 17 remaining) [2024-10-13 16:51:30,738 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2024-10-13 16:51:30,738 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2024-10-13 16:51:30,739 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2024-10-13 16:51:30,739 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2024-10-13 16:51:30,739 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2024-10-13 16:51:30,739 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2024-10-13 16:51:30,752 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-13 16:51:30,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-13 16:51:30,940 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:51:30,945 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-13 16:51:30,945 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-13 16:51:30,949 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 04:51:30 BasicIcfg [2024-10-13 16:51:30,949 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-13 16:51:30,950 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-13 16:51:30,950 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-13 16:51:30,950 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-13 16:51:30,950 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:51:12" (3/4) ... [2024-10-13 16:51:30,951 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-13 16:51:30,954 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-10-13 16:51:30,954 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-10-13 16:51:30,954 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-10-13 16:51:30,960 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 90 nodes and edges [2024-10-13 16:51:30,960 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2024-10-13 16:51:30,960 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2024-10-13 16:51:30,961 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-10-13 16:51:31,040 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-13 16:51:31,040 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-13 16:51:31,040 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-13 16:51:31,041 INFO L158 Benchmark]: Toolchain (without parser) took 19598.66ms. Allocated memory was 169.9MB in the beginning and 5.4GB in the end (delta: 5.2GB). Free memory was 102.2MB in the beginning and 4.7GB in the end (delta: -4.6GB). Peak memory consumption was 600.1MB. Max. memory is 16.1GB. [2024-10-13 16:51:31,041 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 169.9MB. Free memory is still 128.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 16:51:31,041 INFO L158 Benchmark]: CACSL2BoogieTranslator took 205.89ms. Allocated memory is still 169.9MB. Free memory was 102.0MB in the beginning and 88.8MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-13 16:51:31,042 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.25ms. Allocated memory is still 169.9MB. Free memory was 88.8MB in the beginning and 86.9MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 16:51:31,042 INFO L158 Benchmark]: Boogie Preprocessor took 106.62ms. Allocated memory is still 169.9MB. Free memory was 86.9MB in the beginning and 140.8MB in the end (delta: -53.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-13 16:51:31,042 INFO L158 Benchmark]: RCFGBuilder took 651.84ms. Allocated memory is still 169.9MB. Free memory was 140.8MB in the beginning and 99.2MB in the end (delta: 41.6MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2024-10-13 16:51:31,042 INFO L158 Benchmark]: TraceAbstraction took 18508.81ms. Allocated memory was 169.9MB in the beginning and 5.4GB in the end (delta: 5.2GB). Free memory was 99.2MB in the beginning and 4.7GB in the end (delta: -4.6GB). Peak memory consumption was 767.8MB. Max. memory is 16.1GB. [2024-10-13 16:51:31,042 INFO L158 Benchmark]: Witness Printer took 90.85ms. Allocated memory is still 5.4GB. Free memory was 4.7GB in the beginning and 4.7GB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-13 16:51:31,044 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 169.9MB. Free memory is still 128.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 205.89ms. Allocated memory is still 169.9MB. Free memory was 102.0MB in the beginning and 88.8MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.25ms. Allocated memory is still 169.9MB. Free memory was 88.8MB in the beginning and 86.9MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 106.62ms. Allocated memory is still 169.9MB. Free memory was 86.9MB in the beginning and 140.8MB in the end (delta: -53.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 651.84ms. Allocated memory is still 169.9MB. Free memory was 140.8MB in the beginning and 99.2MB in the end (delta: 41.6MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * TraceAbstraction took 18508.81ms. Allocated memory was 169.9MB in the beginning and 5.4GB in the end (delta: 5.2GB). Free memory was 99.2MB in the beginning and 4.7GB in the end (delta: -4.6GB). Peak memory consumption was 767.8MB. Max. memory is 16.1GB. * Witness Printer took 90.85ms. Allocated memory is still 5.4GB. Free memory was 4.7GB in the beginning and 4.7GB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 110]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 110]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 74 locations, 17 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 18.4s, OverallIterations: 16, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 12.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1861 SdHoareTripleChecker+Valid, 3.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1773 mSDsluCounter, 1234 SdHoareTripleChecker+Invalid, 2.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1211 mSDsCounter, 55 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6107 IncrementalHoareTripleChecker+Invalid, 6162 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 55 mSolverCounterUnsat, 23 mSDtfsCounter, 6107 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 512 GetRequests, 289 SyntacticMatches, 7 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 813 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=459occurred in iteration=15, InterpolantAutomatonStates: 143, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 462 NumberOfCodeBlocks, 405 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 591 ConstructedInterpolants, 0 QuantifiedInterpolants, 1927 SizeOfPredicates, 38 NumberOfNonLiveVariables, 1159 ConjunctsInSsa, 70 ConjunctsInUnsatCore, 35 InterpolantComputations, 8 PerfectInterpolantSequences, 272/460 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-13 16:51:31,066 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE