./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-min-max-dec.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-min-max-dec.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 67ced8cbf918778cce3ae5cae291c50696df3950945fdf68713903c29ac269e1 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 16:50:05,739 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 16:50:05,813 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-13 16:50:05,819 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 16:50:05,820 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 16:50:05,845 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 16:50:05,845 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 16:50:05,845 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 16:50:05,846 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 16:50:05,851 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 16:50:05,852 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 16:50:05,852 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 16:50:05,852 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 16:50:05,853 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 16:50:05,853 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 16:50:05,853 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 16:50:05,853 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 16:50:05,854 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 16:50:05,854 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 16:50:05,854 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 16:50:05,855 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 16:50:05,855 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 16:50:05,855 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 16:50:05,855 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 16:50:05,856 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 16:50:05,856 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-13 16:50:05,856 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 16:50:05,856 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 16:50:05,857 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 16:50:05,857 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 16:50:05,857 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 16:50:05,857 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 16:50:05,858 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 16:50:05,858 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 16:50:05,858 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:50:05,858 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 16:50:05,859 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 16:50:05,859 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 16:50:05,859 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 16:50:05,859 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 16:50:05,859 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 16:50:05,860 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 16:50:05,860 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 16:50:05,861 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 16:50:05,861 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67ced8cbf918778cce3ae5cae291c50696df3950945fdf68713903c29ac269e1 [2024-10-13 16:50:06,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 16:50:06,149 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 16:50:06,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 16:50:06,154 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 16:50:06,155 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 16:50:06,156 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-min-max-dec.wvr.c [2024-10-13 16:50:07,620 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 16:50:07,834 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 16:50:07,835 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-min-max-dec.wvr.c [2024-10-13 16:50:07,846 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d69504687/2c0a585fa5f946178770c234fa5cdab1/FLAG4d717876f [2024-10-13 16:50:08,196 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d69504687/2c0a585fa5f946178770c234fa5cdab1 [2024-10-13 16:50:08,198 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 16:50:08,199 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 16:50:08,201 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 16:50:08,201 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 16:50:08,206 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 16:50:08,207 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:50:08" (1/1) ... [2024-10-13 16:50:08,210 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68d33a03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:50:08, skipping insertion in model container [2024-10-13 16:50:08,210 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:50:08" (1/1) ... [2024-10-13 16:50:08,237 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 16:50:08,445 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:50:08,453 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 16:50:08,483 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:50:08,500 INFO L204 MainTranslator]: Completed translation [2024-10-13 16:50:08,501 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:50:08 WrapperNode [2024-10-13 16:50:08,501 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 16:50:08,502 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 16:50:08,502 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 16:50:08,503 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 16:50:08,509 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:50:08" (1/1) ... [2024-10-13 16:50:08,515 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:50:08" (1/1) ... [2024-10-13 16:50:08,541 INFO L138 Inliner]: procedures = 25, calls = 44, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 125 [2024-10-13 16:50:08,542 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 16:50:08,543 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 16:50:08,543 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 16:50:08,543 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 16:50:08,553 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:50:08" (1/1) ... [2024-10-13 16:50:08,553 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:50:08" (1/1) ... [2024-10-13 16:50:08,556 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:50:08" (1/1) ... [2024-10-13 16:50:08,571 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-10-13 16:50:08,572 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:50:08" (1/1) ... [2024-10-13 16:50:08,572 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:50:08" (1/1) ... [2024-10-13 16:50:08,581 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:50:08" (1/1) ... [2024-10-13 16:50:08,586 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:50:08" (1/1) ... [2024-10-13 16:50:08,588 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:50:08" (1/1) ... [2024-10-13 16:50:08,589 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:50:08" (1/1) ... [2024-10-13 16:50:08,592 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 16:50:08,593 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 16:50:08,593 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 16:50:08,594 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 16:50:08,594 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:50:08" (1/1) ... [2024-10-13 16:50:08,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:50:08,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:50:08,632 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 16:50:08,635 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 16:50:08,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 16:50:08,685 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 16:50:08,685 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 16:50:08,686 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 16:50:08,686 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 16:50:08,686 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-13 16:50:08,686 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-13 16:50:08,686 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-10-13 16:50:08,686 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-10-13 16:50:08,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 16:50:08,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 16:50:08,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 16:50:08,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 16:50:08,689 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-13 16:50:08,689 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-13 16:50:08,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-13 16:50:08,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 16:50:08,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 16:50:08,689 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 16:50:08,689 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 16:50:08,691 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 16:50:08,834 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 16:50:08,836 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 16:50:09,214 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 16:50:09,214 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 16:50:09,454 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 16:50:09,454 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-13 16:50:09,454 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:50:09 BoogieIcfgContainer [2024-10-13 16:50:09,455 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 16:50:09,458 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 16:50:09,458 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 16:50:09,461 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 16:50:09,461 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 04:50:08" (1/3) ... [2024-10-13 16:50:09,462 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@180aba7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:50:09, skipping insertion in model container [2024-10-13 16:50:09,462 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:50:08" (2/3) ... [2024-10-13 16:50:09,463 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@180aba7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:50:09, skipping insertion in model container [2024-10-13 16:50:09,463 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:50:09" (3/3) ... [2024-10-13 16:50:09,464 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-dec.wvr.c [2024-10-13 16:50:09,482 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 16:50:09,482 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-10-13 16:50:09,483 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 16:50:09,562 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-10-13 16:50:09,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 64 transitions, 156 flow [2024-10-13 16:50:09,647 INFO L124 PetriNetUnfolderBase]: 4/60 cut-off events. [2024-10-13 16:50:09,647 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-13 16:50:09,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 60 events. 4/60 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 172 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2024-10-13 16:50:09,652 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 64 transitions, 156 flow [2024-10-13 16:50:09,655 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 58 transitions, 137 flow [2024-10-13 16:50:09,663 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 16:50:09,670 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;@68d69a69, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 16:50:09,670 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-10-13 16:50:09,673 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 16:50:09,673 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-13 16:50:09,673 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 16:50:09,674 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:50:09,674 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-13 16:50:09,675 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-13 16:50:09,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:09,680 INFO L85 PathProgramCache]: Analyzing trace with hash 536972, now seen corresponding path program 1 times [2024-10-13 16:50:09,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:09,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058023317] [2024-10-13 16:50:09,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:09,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:09,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:09,996 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 16:50:09,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:09,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058023317] [2024-10-13 16:50:09,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058023317] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:50:09,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:50:09,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:50:09,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332640409] [2024-10-13 16:50:10,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:50:10,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:50:10,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:10,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:50:10,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:50:10,044 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 64 [2024-10-13 16:50:10,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 58 transitions, 137 flow. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 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 16:50:10,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:10,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 64 [2024-10-13 16:50:10,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:50:10,989 INFO L124 PetriNetUnfolderBase]: 4950/6791 cut-off events. [2024-10-13 16:50:10,990 INFO L125 PetriNetUnfolderBase]: For 280/280 co-relation queries the response was YES. [2024-10-13 16:50:11,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13618 conditions, 6791 events. 4950/6791 cut-off events. For 280/280 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 39157 event pairs, 3598 based on Foata normal form. 1/6019 useless extension candidates. Maximal degree in co-relation 12550. Up to 6384 conditions per place. [2024-10-13 16:50:11,055 INFO L140 encePairwiseOnDemand]: 56/64 looper letters, 32 selfloop transitions, 4 changer transitions 0/59 dead transitions. [2024-10-13 16:50:11,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 59 transitions, 211 flow [2024-10-13 16:50:11,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:50:11,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:50:11,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 148 transitions. [2024-10-13 16:50:11,068 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.578125 [2024-10-13 16:50:11,070 INFO L175 Difference]: Start difference. First operand has 67 places, 58 transitions, 137 flow. Second operand 4 states and 148 transitions. [2024-10-13 16:50:11,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 59 transitions, 211 flow [2024-10-13 16:50:11,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 59 transitions, 198 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-10-13 16:50:11,099 INFO L231 Difference]: Finished difference. Result has 63 places, 59 transitions, 149 flow [2024-10-13 16:50:11,101 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=58, 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=149, PETRI_PLACES=63, PETRI_TRANSITIONS=59} [2024-10-13 16:50:11,106 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, -4 predicate places. [2024-10-13 16:50:11,107 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 59 transitions, 149 flow [2024-10-13 16:50:11,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 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 16:50:11,108 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:50:11,108 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-13 16:50:11,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 16:50:11,109 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-13 16:50:11,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:11,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1182383984, now seen corresponding path program 1 times [2024-10-13 16:50:11,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:11,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896998360] [2024-10-13 16:50:11,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:11,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:11,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:11,273 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 16:50:11,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:11,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896998360] [2024-10-13 16:50:11,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896998360] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:50:11,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74849261] [2024-10-13 16:50:11,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:11,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:11,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:50:11,277 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:50:11,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 16:50:11,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:11,367 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:50:11,371 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:50:11,426 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 16:50:11,427 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:50:11,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74849261] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:50:11,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:50:11,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-13 16:50:11,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633605881] [2024-10-13 16:50:11,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:50:11,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:50:11,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:11,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:50:11,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-13 16:50:11,444 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 64 [2024-10-13 16:50:11,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 59 transitions, 149 flow. Second operand has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 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 16:50:11,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:11,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 64 [2024-10-13 16:50:11,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:50:12,208 INFO L124 PetriNetUnfolderBase]: 4950/6790 cut-off events. [2024-10-13 16:50:12,208 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-10-13 16:50:12,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13471 conditions, 6790 events. 4950/6790 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 39112 event pairs, 3598 based on Foata normal form. 1/6019 useless extension candidates. Maximal degree in co-relation 13444. Up to 6379 conditions per place. [2024-10-13 16:50:12,252 INFO L140 encePairwiseOnDemand]: 59/64 looper letters, 28 selfloop transitions, 7 changer transitions 0/58 dead transitions. [2024-10-13 16:50:12,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 58 transitions, 215 flow [2024-10-13 16:50:12,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 16:50:12,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 16:50:12,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 198 transitions. [2024-10-13 16:50:12,254 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.515625 [2024-10-13 16:50:12,255 INFO L175 Difference]: Start difference. First operand has 63 places, 59 transitions, 149 flow. Second operand 6 states and 198 transitions. [2024-10-13 16:50:12,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 58 transitions, 215 flow [2024-10-13 16:50:12,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 58 transitions, 212 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:50:12,257 INFO L231 Difference]: Finished difference. Result has 66 places, 58 transitions, 156 flow [2024-10-13 16:50:12,257 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=156, PETRI_PLACES=66, PETRI_TRANSITIONS=58} [2024-10-13 16:50:12,258 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, -1 predicate places. [2024-10-13 16:50:12,258 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 58 transitions, 156 flow [2024-10-13 16:50:12,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 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 16:50:12,258 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:50:12,259 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-13 16:50:12,278 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 16:50:12,462 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 16:50:12,463 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-13 16:50:12,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:12,464 INFO L85 PathProgramCache]: Analyzing trace with hash 2000802717, now seen corresponding path program 1 times [2024-10-13 16:50:12,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:12,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7527099] [2024-10-13 16:50:12,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:12,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:12,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:12,560 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 16:50:12,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:12,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7527099] [2024-10-13 16:50:12,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7527099] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:50:12,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398847362] [2024-10-13 16:50:12,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:12,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:12,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:50:12,564 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 16:50:12,565 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 16:50:12,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:12,634 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:50:12,635 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:50:12,658 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 16:50:12,659 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:50:12,705 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 16:50:12,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398847362] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:50:12,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:50:12,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-13 16:50:12,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212811969] [2024-10-13 16:50:12,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:50:12,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 16:50:12,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:12,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 16:50:12,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-13 16:50:12,728 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 64 [2024-10-13 16:50:12,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 58 transitions, 156 flow. Second operand has 12 states, 12 states have (on average 28.083333333333332) internal successors, (337), 12 states have internal predecessors, (337), 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 16:50:12,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:12,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 64 [2024-10-13 16:50:12,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:50:13,477 INFO L124 PetriNetUnfolderBase]: 4953/6802 cut-off events. [2024-10-13 16:50:13,477 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2024-10-13 16:50:13,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13515 conditions, 6802 events. 4953/6802 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 39135 event pairs, 3598 based on Foata normal form. 3/6031 useless extension candidates. Maximal degree in co-relation 13445. Up to 6386 conditions per place. [2024-10-13 16:50:13,531 INFO L140 encePairwiseOnDemand]: 59/64 looper letters, 31 selfloop transitions, 13 changer transitions 0/67 dead transitions. [2024-10-13 16:50:13,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 67 transitions, 298 flow [2024-10-13 16:50:13,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 16:50:13,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 16:50:13,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 317 transitions. [2024-10-13 16:50:13,534 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4953125 [2024-10-13 16:50:13,534 INFO L175 Difference]: Start difference. First operand has 66 places, 58 transitions, 156 flow. Second operand 10 states and 317 transitions. [2024-10-13 16:50:13,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 67 transitions, 298 flow [2024-10-13 16:50:13,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 67 transitions, 252 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-10-13 16:50:13,537 INFO L231 Difference]: Finished difference. Result has 73 places, 67 transitions, 208 flow [2024-10-13 16:50:13,538 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=208, PETRI_PLACES=73, PETRI_TRANSITIONS=67} [2024-10-13 16:50:13,538 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 6 predicate places. [2024-10-13 16:50:13,539 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 67 transitions, 208 flow [2024-10-13 16:50:13,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 28.083333333333332) internal successors, (337), 12 states have internal predecessors, (337), 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 16:50:13,539 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:50:13,539 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:50:13,556 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 16:50:13,743 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 16:50:13,744 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-13 16:50:13,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:13,744 INFO L85 PathProgramCache]: Analyzing trace with hash 235104788, now seen corresponding path program 1 times [2024-10-13 16:50:13,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:13,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734948702] [2024-10-13 16:50:13,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:13,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:13,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:13,857 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 16:50:13,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:13,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734948702] [2024-10-13 16:50:13,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734948702] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:50:13,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:50:13,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:50:13,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851773243] [2024-10-13 16:50:13,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:50:13,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:50:13,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:13,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:50:13,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 16:50:13,860 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 64 [2024-10-13 16:50:13,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 67 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 16:50:13,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:13,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 64 [2024-10-13 16:50:13,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:50:14,480 INFO L124 PetriNetUnfolderBase]: 4952/6801 cut-off events. [2024-10-13 16:50:14,481 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-10-13 16:50:14,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13512 conditions, 6801 events. 4952/6801 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 39144 event pairs, 3598 based on Foata normal form. 1/6031 useless extension candidates. Maximal degree in co-relation 13478. Up to 6390 conditions per place. [2024-10-13 16:50:14,522 INFO L140 encePairwiseOnDemand]: 61/64 looper letters, 40 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2024-10-13 16:50:14,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 66 transitions, 288 flow [2024-10-13 16:50:14,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:50:14,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:50:14,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2024-10-13 16:50:14,524 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6302083333333334 [2024-10-13 16:50:14,524 INFO L175 Difference]: Start difference. First operand has 73 places, 67 transitions, 208 flow. Second operand 3 states and 121 transitions. [2024-10-13 16:50:14,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 66 transitions, 288 flow [2024-10-13 16:50:14,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 66 transitions, 278 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-13 16:50:14,526 INFO L231 Difference]: Finished difference. Result has 73 places, 66 transitions, 198 flow [2024-10-13 16:50:14,527 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=73, PETRI_TRANSITIONS=66} [2024-10-13 16:50:14,529 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 6 predicate places. [2024-10-13 16:50:14,530 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 66 transitions, 198 flow [2024-10-13 16:50:14,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 16:50:14,530 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:50:14,530 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:50:14,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 16:50:14,531 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-13 16:50:14,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:14,531 INFO L85 PathProgramCache]: Analyzing trace with hash 468397712, now seen corresponding path program 1 times [2024-10-13 16:50:14,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:14,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401600462] [2024-10-13 16:50:14,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:14,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:14,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:14,819 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 16:50:14,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:14,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401600462] [2024-10-13 16:50:14,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401600462] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:50:14,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105140733] [2024-10-13 16:50:14,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:14,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:14,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:50:14,824 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 16:50:14,826 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 16:50:14,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:14,914 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-13 16:50:14,916 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:50:14,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-13 16:50:15,041 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 16:50:15,041 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:50:15,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-10-13 16:50:15,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-10-13 16:50:15,133 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 16:50:15,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105140733] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:50:15,134 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:50:15,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-13 16:50:15,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965024983] [2024-10-13 16:50:15,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:50:15,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 16:50:15,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:15,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 16:50:15,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-13 16:50:15,159 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 64 [2024-10-13 16:50:15,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 66 transitions, 198 flow. Second operand has 11 states, 11 states have (on average 31.181818181818183) internal successors, (343), 11 states have internal predecessors, (343), 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 16:50:15,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:15,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 64 [2024-10-13 16:50:15,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:50:16,349 INFO L124 PetriNetUnfolderBase]: 7158/11821 cut-off events. [2024-10-13 16:50:16,349 INFO L125 PetriNetUnfolderBase]: For 116/116 co-relation queries the response was YES. [2024-10-13 16:50:16,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21384 conditions, 11821 events. 7158/11821 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 89689 event pairs, 2840 based on Foata normal form. 0/10520 useless extension candidates. Maximal degree in co-relation 21364. Up to 5414 conditions per place. [2024-10-13 16:50:16,426 INFO L140 encePairwiseOnDemand]: 55/64 looper letters, 65 selfloop transitions, 12 changer transitions 0/101 dead transitions. [2024-10-13 16:50:16,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 101 transitions, 430 flow [2024-10-13 16:50:16,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 16:50:16,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-13 16:50:16,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 301 transitions. [2024-10-13 16:50:16,428 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.587890625 [2024-10-13 16:50:16,428 INFO L175 Difference]: Start difference. First operand has 73 places, 66 transitions, 198 flow. Second operand 8 states and 301 transitions. [2024-10-13 16:50:16,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 101 transitions, 430 flow [2024-10-13 16:50:16,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 101 transitions, 426 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 16:50:16,431 INFO L231 Difference]: Finished difference. Result has 80 places, 69 transitions, 242 flow [2024-10-13 16:50:16,431 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=242, PETRI_PLACES=80, PETRI_TRANSITIONS=69} [2024-10-13 16:50:16,432 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 13 predicate places. [2024-10-13 16:50:16,432 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 69 transitions, 242 flow [2024-10-13 16:50:16,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 31.181818181818183) internal successors, (343), 11 states have internal predecessors, (343), 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 16:50:16,432 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:50:16,433 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:50:16,449 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 16:50:16,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:16,637 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-13 16:50:16,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:16,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1634668787, now seen corresponding path program 1 times [2024-10-13 16:50:16,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:16,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505673549] [2024-10-13 16:50:16,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:16,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:16,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:16,678 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 16:50:16,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:16,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505673549] [2024-10-13 16:50:16,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505673549] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:50:16,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:50:16,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 16:50:16,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875787148] [2024-10-13 16:50:16,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:50:16,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:50:16,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:16,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:50:16,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 16:50:16,680 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 64 [2024-10-13 16:50:16,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 69 transitions, 242 flow. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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 16:50:16,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:16,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 64 [2024-10-13 16:50:16,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:50:17,454 INFO L124 PetriNetUnfolderBase]: 6071/10307 cut-off events. [2024-10-13 16:50:17,455 INFO L125 PetriNetUnfolderBase]: For 3725/3725 co-relation queries the response was YES. [2024-10-13 16:50:17,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21346 conditions, 10307 events. 6071/10307 cut-off events. For 3725/3725 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 76316 event pairs, 1230 based on Foata normal form. 0/9485 useless extension candidates. Maximal degree in co-relation 21314. Up to 6718 conditions per place. [2024-10-13 16:50:17,532 INFO L140 encePairwiseOnDemand]: 61/64 looper letters, 63 selfloop transitions, 2 changer transitions 0/89 dead transitions. [2024-10-13 16:50:17,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 89 transitions, 440 flow [2024-10-13 16:50:17,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:50:17,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:50:17,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 136 transitions. [2024-10-13 16:50:17,534 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7083333333333334 [2024-10-13 16:50:17,534 INFO L175 Difference]: Start difference. First operand has 80 places, 69 transitions, 242 flow. Second operand 3 states and 136 transitions. [2024-10-13 16:50:17,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 89 transitions, 440 flow [2024-10-13 16:50:17,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 89 transitions, 430 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-13 16:50:17,540 INFO L231 Difference]: Finished difference. Result has 79 places, 69 transitions, 240 flow [2024-10-13 16:50:17,540 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=240, PETRI_PLACES=79, PETRI_TRANSITIONS=69} [2024-10-13 16:50:17,541 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 12 predicate places. [2024-10-13 16:50:17,541 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 69 transitions, 240 flow [2024-10-13 16:50:17,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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 16:50:17,542 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:50:17,542 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:50:17,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 16:50:17,542 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-13 16:50:17,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:17,543 INFO L85 PathProgramCache]: Analyzing trace with hash 2047895002, now seen corresponding path program 1 times [2024-10-13 16:50:17,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:17,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556820426] [2024-10-13 16:50:17,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:17,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:17,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:17,600 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 16:50:17,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:17,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556820426] [2024-10-13 16:50:17,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556820426] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:50:17,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:50:17,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:50:17,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839121665] [2024-10-13 16:50:17,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:50:17,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:50:17,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:17,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:50:17,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:50:17,610 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 64 [2024-10-13 16:50:17,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 69 transitions, 240 flow. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 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 16:50:17,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:17,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 64 [2024-10-13 16:50:17,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:50:19,040 INFO L124 PetriNetUnfolderBase]: 14148/19671 cut-off events. [2024-10-13 16:50:19,040 INFO L125 PetriNetUnfolderBase]: For 10034/10034 co-relation queries the response was YES. [2024-10-13 16:50:19,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47280 conditions, 19671 events. 14148/19671 cut-off events. For 10034/10034 co-relation queries the response was YES. Maximal size of possible extension queue 800. Compared 123377 event pairs, 7793 based on Foata normal form. 348/19358 useless extension candidates. Maximal degree in co-relation 47249. Up to 13466 conditions per place. [2024-10-13 16:50:19,188 INFO L140 encePairwiseOnDemand]: 58/64 looper letters, 93 selfloop transitions, 4 changer transitions 0/117 dead transitions. [2024-10-13 16:50:19,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 117 transitions, 596 flow [2024-10-13 16:50:19,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:50:19,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:50:19,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 179 transitions. [2024-10-13 16:50:19,190 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.69921875 [2024-10-13 16:50:19,190 INFO L175 Difference]: Start difference. First operand has 79 places, 69 transitions, 240 flow. Second operand 4 states and 179 transitions. [2024-10-13 16:50:19,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 117 transitions, 596 flow [2024-10-13 16:50:19,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 117 transitions, 588 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 16:50:19,205 INFO L231 Difference]: Finished difference. Result has 82 places, 72 transitions, 265 flow [2024-10-13 16:50:19,206 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=265, PETRI_PLACES=82, PETRI_TRANSITIONS=72} [2024-10-13 16:50:19,206 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 15 predicate places. [2024-10-13 16:50:19,207 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 72 transitions, 265 flow [2024-10-13 16:50:19,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 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 16:50:19,207 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:50:19,207 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:50:19,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 16:50:19,208 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-13 16:50:19,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:19,208 INFO L85 PathProgramCache]: Analyzing trace with hash -841345646, now seen corresponding path program 1 times [2024-10-13 16:50:19,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:19,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751998290] [2024-10-13 16:50:19,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:19,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:19,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:19,256 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 16:50:19,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:19,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751998290] [2024-10-13 16:50:19,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751998290] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:50:19,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:50:19,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:50:19,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97056545] [2024-10-13 16:50:19,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:50:19,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:50:19,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:19,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:50:19,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:50:19,271 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2024-10-13 16:50:19,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 72 transitions, 265 flow. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 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 16:50:19,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:19,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2024-10-13 16:50:19,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:50:20,707 INFO L124 PetriNetUnfolderBase]: 12435/17088 cut-off events. [2024-10-13 16:50:20,707 INFO L125 PetriNetUnfolderBase]: For 7011/9154 co-relation queries the response was YES. [2024-10-13 16:50:20,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41895 conditions, 17088 events. 12435/17088 cut-off events. For 7011/9154 co-relation queries the response was YES. Maximal size of possible extension queue 759. Compared 106679 event pairs, 6391 based on Foata normal form. 1694/18651 useless extension candidates. Maximal degree in co-relation 41863. Up to 11738 conditions per place. [2024-10-13 16:50:20,797 INFO L140 encePairwiseOnDemand]: 58/64 looper letters, 83 selfloop transitions, 4 changer transitions 0/109 dead transitions. [2024-10-13 16:50:20,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 109 transitions, 547 flow [2024-10-13 16:50:20,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:50:20,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:50:20,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 176 transitions. [2024-10-13 16:50:20,799 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-10-13 16:50:20,799 INFO L175 Difference]: Start difference. First operand has 82 places, 72 transitions, 265 flow. Second operand 4 states and 176 transitions. [2024-10-13 16:50:20,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 109 transitions, 547 flow [2024-10-13 16:50:20,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 109 transitions, 540 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:50:20,811 INFO L231 Difference]: Finished difference. Result has 86 places, 73 transitions, 283 flow [2024-10-13 16:50:20,812 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=283, PETRI_PLACES=86, PETRI_TRANSITIONS=73} [2024-10-13 16:50:20,812 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 19 predicate places. [2024-10-13 16:50:20,813 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 73 transitions, 283 flow [2024-10-13 16:50:20,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 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 16:50:20,813 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:50:20,813 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-13 16:50:20,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 16:50:20,813 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-13 16:50:20,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:20,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1363844897, now seen corresponding path program 2 times [2024-10-13 16:50:20,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:20,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749772258] [2024-10-13 16:50:20,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:20,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:20,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:20,954 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 16:50:20,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:20,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749772258] [2024-10-13 16:50:20,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749772258] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:50:20,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93038373] [2024-10-13 16:50:20,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:50:20,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:20,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:50:20,957 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 16:50:20,959 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 16:50:21,025 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 16:50:21,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:50:21,026 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 16:50:21,026 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:50:21,065 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 16:50:21,065 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:50:21,092 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 16:50:21,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93038373] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:50:21,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:50:21,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-10-13 16:50:21,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108051590] [2024-10-13 16:50:21,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:50:21,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 16:50:21,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:21,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 16:50:21,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-13 16:50:21,109 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 64 [2024-10-13 16:50:21,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 73 transitions, 283 flow. Second operand has 14 states, 14 states have (on average 28.142857142857142) internal successors, (394), 14 states have internal predecessors, (394), 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 16:50:21,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:21,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 64 [2024-10-13 16:50:21,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:50:22,015 INFO L124 PetriNetUnfolderBase]: 8080/10861 cut-off events. [2024-10-13 16:50:22,015 INFO L125 PetriNetUnfolderBase]: For 10553/11928 co-relation queries the response was YES. [2024-10-13 16:50:22,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29278 conditions, 10861 events. 8080/10861 cut-off events. For 10553/11928 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 62416 event pairs, 5845 based on Foata normal form. 690/11264 useless extension candidates. Maximal degree in co-relation 29236. Up to 10328 conditions per place. [2024-10-13 16:50:22,082 INFO L140 encePairwiseOnDemand]: 59/64 looper letters, 32 selfloop transitions, 18 changer transitions 0/75 dead transitions. [2024-10-13 16:50:22,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 75 transitions, 391 flow [2024-10-13 16:50:22,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 16:50:22,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-13 16:50:22,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 425 transitions. [2024-10-13 16:50:22,084 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47433035714285715 [2024-10-13 16:50:22,084 INFO L175 Difference]: Start difference. First operand has 86 places, 73 transitions, 283 flow. Second operand 14 states and 425 transitions. [2024-10-13 16:50:22,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 75 transitions, 391 flow [2024-10-13 16:50:22,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 75 transitions, 373 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-10-13 16:50:22,100 INFO L231 Difference]: Finished difference. Result has 92 places, 75 transitions, 309 flow [2024-10-13 16:50:22,100 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=309, PETRI_PLACES=92, PETRI_TRANSITIONS=75} [2024-10-13 16:50:22,101 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 25 predicate places. [2024-10-13 16:50:22,101 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 75 transitions, 309 flow [2024-10-13 16:50:22,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 28.142857142857142) internal successors, (394), 14 states have internal predecessors, (394), 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 16:50:22,102 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:50:22,102 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:50:22,119 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 16:50:22,302 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 16:50:22,303 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-13 16:50:22,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:22,303 INFO L85 PathProgramCache]: Analyzing trace with hash -953832204, now seen corresponding path program 1 times [2024-10-13 16:50:22,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:22,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632644202] [2024-10-13 16:50:22,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:22,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:22,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:22,381 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 16:50:22,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:22,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632644202] [2024-10-13 16:50:22,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632644202] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:50:22,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:50:22,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 16:50:22,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709640748] [2024-10-13 16:50:22,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:50:22,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:50:22,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:22,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:50:22,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 16:50:22,385 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 64 [2024-10-13 16:50:22,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 75 transitions, 309 flow. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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 16:50:22,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:22,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 64 [2024-10-13 16:50:22,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:50:23,233 INFO L124 PetriNetUnfolderBase]: 7639/12413 cut-off events. [2024-10-13 16:50:23,233 INFO L125 PetriNetUnfolderBase]: For 7743/9122 co-relation queries the response was YES. [2024-10-13 16:50:23,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29293 conditions, 12413 events. 7639/12413 cut-off events. For 7743/9122 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 90767 event pairs, 1874 based on Foata normal form. 781/12621 useless extension candidates. Maximal degree in co-relation 29195. Up to 7014 conditions per place. [2024-10-13 16:50:23,305 INFO L140 encePairwiseOnDemand]: 61/64 looper letters, 71 selfloop transitions, 2 changer transitions 0/97 dead transitions. [2024-10-13 16:50:23,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 97 transitions, 538 flow [2024-10-13 16:50:23,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:50:23,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:50:23,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 134 transitions. [2024-10-13 16:50:23,306 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6979166666666666 [2024-10-13 16:50:23,307 INFO L175 Difference]: Start difference. First operand has 92 places, 75 transitions, 309 flow. Second operand 3 states and 134 transitions. [2024-10-13 16:50:23,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 97 transitions, 538 flow [2024-10-13 16:50:23,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 97 transitions, 470 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-10-13 16:50:23,316 INFO L231 Difference]: Finished difference. Result has 83 places, 75 transitions, 249 flow [2024-10-13 16:50:23,316 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=249, PETRI_PLACES=83, PETRI_TRANSITIONS=75} [2024-10-13 16:50:23,317 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 16 predicate places. [2024-10-13 16:50:23,317 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 75 transitions, 249 flow [2024-10-13 16:50:23,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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 16:50:23,318 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:50:23,318 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:50:23,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-13 16:50:23,318 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-13 16:50:23,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:23,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1051645510, now seen corresponding path program 1 times [2024-10-13 16:50:23,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:23,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968215105] [2024-10-13 16:50:23,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:23,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:23,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:23,359 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 16:50:23,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:23,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968215105] [2024-10-13 16:50:23,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968215105] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:50:23,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:50:23,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:50:23,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876840270] [2024-10-13 16:50:23,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:50:23,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:50:23,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:23,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:50:23,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:50:23,369 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 64 [2024-10-13 16:50:23,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 75 transitions, 249 flow. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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 16:50:23,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:23,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 64 [2024-10-13 16:50:23,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:50:25,018 INFO L124 PetriNetUnfolderBase]: 17585/24476 cut-off events. [2024-10-13 16:50:25,018 INFO L125 PetriNetUnfolderBase]: For 19105/22212 co-relation queries the response was YES. [2024-10-13 16:50:25,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63330 conditions, 24476 events. 17585/24476 cut-off events. For 19105/22212 co-relation queries the response was YES. Maximal size of possible extension queue 892. Compared 155755 event pairs, 9783 based on Foata normal form. 2014/25767 useless extension candidates. Maximal degree in co-relation 39489. Up to 16489 conditions per place. [2024-10-13 16:50:25,329 INFO L140 encePairwiseOnDemand]: 58/64 looper letters, 100 selfloop transitions, 4 changer transitions 0/125 dead transitions. [2024-10-13 16:50:25,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 125 transitions, 643 flow [2024-10-13 16:50:25,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:50:25,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:50:25,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 177 transitions. [2024-10-13 16:50:25,331 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.69140625 [2024-10-13 16:50:25,331 INFO L175 Difference]: Start difference. First operand has 83 places, 75 transitions, 249 flow. Second operand 4 states and 177 transitions. [2024-10-13 16:50:25,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 125 transitions, 643 flow [2024-10-13 16:50:25,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 125 transitions, 631 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-10-13 16:50:25,345 INFO L231 Difference]: Finished difference. Result has 85 places, 78 transitions, 270 flow [2024-10-13 16:50:25,345 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=270, PETRI_PLACES=85, PETRI_TRANSITIONS=78} [2024-10-13 16:50:25,345 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 18 predicate places. [2024-10-13 16:50:25,345 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 78 transitions, 270 flow [2024-10-13 16:50:25,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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 16:50:25,346 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:50:25,346 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:50:25,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-13 16:50:25,346 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-13 16:50:25,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:25,346 INFO L85 PathProgramCache]: Analyzing trace with hash 495972642, now seen corresponding path program 1 times [2024-10-13 16:50:25,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:25,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338527923] [2024-10-13 16:50:25,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:25,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:25,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:25,414 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 16:50:25,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:25,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338527923] [2024-10-13 16:50:25,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338527923] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:50:25,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:50:25,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 16:50:25,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820876287] [2024-10-13 16:50:25,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:50:25,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:50:25,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:25,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:50:25,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 16:50:25,417 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 64 [2024-10-13 16:50:25,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 78 transitions, 270 flow. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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 16:50:25,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:25,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 64 [2024-10-13 16:50:25,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:50:26,653 INFO L124 PetriNetUnfolderBase]: 10593/16958 cut-off events. [2024-10-13 16:50:26,653 INFO L125 PetriNetUnfolderBase]: For 11689/13765 co-relation queries the response was YES. [2024-10-13 16:50:26,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44271 conditions, 16958 events. 10593/16958 cut-off events. For 11689/13765 co-relation queries the response was YES. Maximal size of possible extension queue 687. Compared 124877 event pairs, 1914 based on Foata normal form. 1216/17935 useless extension candidates. Maximal degree in co-relation 28847. Up to 10867 conditions per place. [2024-10-13 16:50:26,740 INFO L140 encePairwiseOnDemand]: 61/64 looper letters, 74 selfloop transitions, 2 changer transitions 0/101 dead transitions. [2024-10-13 16:50:26,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 101 transitions, 509 flow [2024-10-13 16:50:26,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:50:26,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:50:26,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 135 transitions. [2024-10-13 16:50:26,741 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.703125 [2024-10-13 16:50:26,741 INFO L175 Difference]: Start difference. First operand has 85 places, 78 transitions, 270 flow. Second operand 3 states and 135 transitions. [2024-10-13 16:50:26,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 101 transitions, 509 flow [2024-10-13 16:50:26,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 101 transitions, 504 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:50:26,789 INFO L231 Difference]: Finished difference. Result has 87 places, 78 transitions, 275 flow [2024-10-13 16:50:26,789 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=275, PETRI_PLACES=87, PETRI_TRANSITIONS=78} [2024-10-13 16:50:26,790 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 20 predicate places. [2024-10-13 16:50:26,790 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 78 transitions, 275 flow [2024-10-13 16:50:26,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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 16:50:26,790 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:50:26,790 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:50:26,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-13 16:50:26,791 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-13 16:50:26,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:26,791 INFO L85 PathProgramCache]: Analyzing trace with hash 901598958, now seen corresponding path program 1 times [2024-10-13 16:50:26,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:26,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140832146] [2024-10-13 16:50:26,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:26,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:26,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:27,087 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:27,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:27,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140832146] [2024-10-13 16:50:27,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140832146] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:50:27,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244372512] [2024-10-13 16:50:27,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:27,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:27,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:50:27,091 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 16:50:27,092 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 16:50:27,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:27,179 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 16:50:27,180 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:50:27,304 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:27,304 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:50:27,408 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:27,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244372512] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:50:27,409 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:50:27,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-10-13 16:50:27,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008654179] [2024-10-13 16:50:27,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:50:27,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-13 16:50:27,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:27,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-13 16:50:27,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2024-10-13 16:50:27,543 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 64 [2024-10-13 16:50:27,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 78 transitions, 275 flow. Second operand has 20 states, 20 states have (on average 24.75) internal successors, (495), 20 states have internal predecessors, (495), 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 16:50:27,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:27,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 64 [2024-10-13 16:50:27,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:50:30,480 INFO L124 PetriNetUnfolderBase]: 26041/35719 cut-off events. [2024-10-13 16:50:30,480 INFO L125 PetriNetUnfolderBase]: For 25775/34549 co-relation queries the response was YES. [2024-10-13 16:50:30,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94838 conditions, 35719 events. 26041/35719 cut-off events. For 25775/34549 co-relation queries the response was YES. Maximal size of possible extension queue 1421. Compared 236250 event pairs, 15435 based on Foata normal form. 4931/40311 useless extension candidates. Maximal degree in co-relation 58233. Up to 21839 conditions per place. [2024-10-13 16:50:30,705 INFO L140 encePairwiseOnDemand]: 55/64 looper letters, 132 selfloop transitions, 18 changer transitions 0/171 dead transitions. [2024-10-13 16:50:30,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 171 transitions, 884 flow [2024-10-13 16:50:30,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 16:50:30,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 16:50:30,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 348 transitions. [2024-10-13 16:50:30,707 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.54375 [2024-10-13 16:50:30,707 INFO L175 Difference]: Start difference. First operand has 87 places, 78 transitions, 275 flow. Second operand 10 states and 348 transitions. [2024-10-13 16:50:30,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 171 transitions, 884 flow [2024-10-13 16:50:30,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 171 transitions, 880 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 16:50:30,755 INFO L231 Difference]: Finished difference. Result has 98 places, 83 transitions, 361 flow [2024-10-13 16:50:30,755 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=361, PETRI_PLACES=98, PETRI_TRANSITIONS=83} [2024-10-13 16:50:30,756 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 31 predicate places. [2024-10-13 16:50:30,756 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 83 transitions, 361 flow [2024-10-13 16:50:30,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 24.75) internal successors, (495), 20 states have internal predecessors, (495), 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 16:50:30,756 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:50:30,757 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:50:30,769 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-13 16:50:30,957 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,SelfDestructingSolverStorable12 [2024-10-13 16:50:30,957 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-13 16:50:30,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:30,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1047540111, now seen corresponding path program 1 times [2024-10-13 16:50:30,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:30,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196017509] [2024-10-13 16:50:30,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:30,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:30,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:31,013 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 16:50:31,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:31,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196017509] [2024-10-13 16:50:31,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196017509] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:50:31,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124614879] [2024-10-13 16:50:31,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:31,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:31,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:50:31,017 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 16:50:31,019 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 16:50:31,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:31,267 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 16:50:31,268 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:50:31,383 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 16:50:31,383 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:50:31,514 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 16:50:31,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124614879] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:50:31,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:50:31,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-10-13 16:50:31,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063492624] [2024-10-13 16:50:31,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:50:31,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-13 16:50:31,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:31,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-13 16:50:31,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-10-13 16:50:31,714 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 64 [2024-10-13 16:50:31,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 83 transitions, 361 flow. Second operand has 19 states, 19 states have (on average 24.105263157894736) internal successors, (458), 19 states have internal predecessors, (458), 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 16:50:31,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:31,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 64 [2024-10-13 16:50:31,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:50:35,342 INFO L124 PetriNetUnfolderBase]: 27908/38334 cut-off events. [2024-10-13 16:50:35,342 INFO L125 PetriNetUnfolderBase]: For 57609/64261 co-relation queries the response was YES. [2024-10-13 16:50:35,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113920 conditions, 38334 events. 27908/38334 cut-off events. For 57609/64261 co-relation queries the response was YES. Maximal size of possible extension queue 1375. Compared 252499 event pairs, 6952 based on Foata normal form. 3910/41574 useless extension candidates. Maximal degree in co-relation 78292. Up to 6812 conditions per place. [2024-10-13 16:50:35,590 INFO L140 encePairwiseOnDemand]: 54/64 looper letters, 233 selfloop transitions, 25 changer transitions 0/279 dead transitions. [2024-10-13 16:50:35,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 279 transitions, 1691 flow [2024-10-13 16:50:35,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 16:50:35,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-13 16:50:35,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 516 transitions. [2024-10-13 16:50:35,592 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5758928571428571 [2024-10-13 16:50:35,592 INFO L175 Difference]: Start difference. First operand has 98 places, 83 transitions, 361 flow. Second operand 14 states and 516 transitions. [2024-10-13 16:50:35,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 279 transitions, 1691 flow [2024-10-13 16:50:35,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 279 transitions, 1658 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-10-13 16:50:35,715 INFO L231 Difference]: Finished difference. Result has 106 places, 87 transitions, 406 flow [2024-10-13 16:50:35,715 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=406, PETRI_PLACES=106, PETRI_TRANSITIONS=87} [2024-10-13 16:50:35,716 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 39 predicate places. [2024-10-13 16:50:35,716 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 87 transitions, 406 flow [2024-10-13 16:50:35,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 24.105263157894736) internal successors, (458), 19 states have internal predecessors, (458), 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 16:50:35,716 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:50:35,716 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:50:35,731 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-13 16:50:35,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:35,917 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-13 16:50:35,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:35,918 INFO L85 PathProgramCache]: Analyzing trace with hash -634419607, now seen corresponding path program 1 times [2024-10-13 16:50:35,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:35,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088793056] [2024-10-13 16:50:35,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:35,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:35,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:36,097 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 16:50:36,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:36,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088793056] [2024-10-13 16:50:36,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088793056] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:50:36,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908014968] [2024-10-13 16:50:36,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:36,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:36,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:50:36,100 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 16:50:36,102 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 16:50:36,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:36,177 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-13 16:50:36,179 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:50:36,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-13 16:50:36,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-10-13 16:50:36,226 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 16:50:36,226 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:50:36,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-10-13 16:50:36,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-10-13 16:50:36,300 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 16:50:36,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908014968] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:50:36,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:50:36,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-10-13 16:50:36,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460465211] [2024-10-13 16:50:36,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:50:36,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 16:50:36,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:36,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 16:50:36,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-10-13 16:50:36,302 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 64 [2024-10-13 16:50:36,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 87 transitions, 406 flow. Second operand has 10 states, 10 states have (on average 31.9) internal successors, (319), 10 states have internal predecessors, (319), 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 16:50:36,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:36,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 64 [2024-10-13 16:50:36,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:50:38,190 INFO L124 PetriNetUnfolderBase]: 13482/19771 cut-off events. [2024-10-13 16:50:38,190 INFO L125 PetriNetUnfolderBase]: For 32694/35902 co-relation queries the response was YES. [2024-10-13 16:50:38,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58896 conditions, 19771 events. 13482/19771 cut-off events. For 32694/35902 co-relation queries the response was YES. Maximal size of possible extension queue 815. Compared 138411 event pairs, 10511 based on Foata normal form. 2184/21465 useless extension candidates. Maximal degree in co-relation 36071. Up to 17611 conditions per place. [2024-10-13 16:50:38,306 INFO L140 encePairwiseOnDemand]: 59/64 looper letters, 49 selfloop transitions, 8 changer transitions 1/86 dead transitions. [2024-10-13 16:50:38,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 86 transitions, 516 flow [2024-10-13 16:50:38,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 16:50:38,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 16:50:38,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 207 transitions. [2024-10-13 16:50:38,307 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5390625 [2024-10-13 16:50:38,307 INFO L175 Difference]: Start difference. First operand has 106 places, 87 transitions, 406 flow. Second operand 6 states and 207 transitions. [2024-10-13 16:50:38,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 86 transitions, 516 flow [2024-10-13 16:50:38,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 86 transitions, 475 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-10-13 16:50:38,368 INFO L231 Difference]: Finished difference. Result has 101 places, 85 transitions, 372 flow [2024-10-13 16:50:38,368 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=372, PETRI_PLACES=101, PETRI_TRANSITIONS=85} [2024-10-13 16:50:38,368 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 34 predicate places. [2024-10-13 16:50:38,369 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 85 transitions, 372 flow [2024-10-13 16:50:38,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 31.9) internal successors, (319), 10 states have internal predecessors, (319), 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 16:50:38,369 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:50:38,369 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:50:38,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-13 16:50:38,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:38,570 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-13 16:50:38,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:38,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1564027030, now seen corresponding path program 2 times [2024-10-13 16:50:38,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:38,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304576765] [2024-10-13 16:50:38,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:38,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:38,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:39,278 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:39,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:39,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304576765] [2024-10-13 16:50:39,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304576765] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:50:39,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098753982] [2024-10-13 16:50:39,280 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:50:39,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:39,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:50:39,281 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 16:50:39,283 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 16:50:39,362 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 16:50:39,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:50:39,364 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-13 16:50:39,366 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:50:39,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-13 16:50:39,440 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 16:50:39,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2024-10-13 16:50:39,478 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:39,478 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:50:39,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-10-13 16:50:39,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2024-10-13 16:50:39,620 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:39,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098753982] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:50:39,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:50:39,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-10-13 16:50:39,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115425852] [2024-10-13 16:50:39,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:50:39,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-13 16:50:39,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:39,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-13 16:50:39,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2024-10-13 16:50:39,696 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 64 [2024-10-13 16:50:39,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 85 transitions, 372 flow. Second operand has 19 states, 19 states have (on average 25.789473684210527) internal successors, (490), 19 states have internal predecessors, (490), 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 16:50:39,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:39,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 64 [2024-10-13 16:50:39,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:50:43,178 INFO L124 PetriNetUnfolderBase]: 25662/36082 cut-off events. [2024-10-13 16:50:43,178 INFO L125 PetriNetUnfolderBase]: For 36433/42493 co-relation queries the response was YES. [2024-10-13 16:50:43,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101144 conditions, 36082 events. 25662/36082 cut-off events. For 36433/42493 co-relation queries the response was YES. Maximal size of possible extension queue 1128. Compared 245934 event pairs, 6655 based on Foata normal form. 2863/38784 useless extension candidates. Maximal degree in co-relation 78360. Up to 7980 conditions per place. [2024-10-13 16:50:43,419 INFO L140 encePairwiseOnDemand]: 54/64 looper letters, 175 selfloop transitions, 21 changer transitions 6/225 dead transitions. [2024-10-13 16:50:43,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 225 transitions, 1225 flow [2024-10-13 16:50:43,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 16:50:43,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-13 16:50:43,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 499 transitions. [2024-10-13 16:50:43,421 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5569196428571429 [2024-10-13 16:50:43,421 INFO L175 Difference]: Start difference. First operand has 101 places, 85 transitions, 372 flow. Second operand 14 states and 499 transitions. [2024-10-13 16:50:43,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 225 transitions, 1225 flow [2024-10-13 16:50:43,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 225 transitions, 1214 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-13 16:50:43,541 INFO L231 Difference]: Finished difference. Result has 111 places, 89 transitions, 442 flow [2024-10-13 16:50:43,541 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=442, PETRI_PLACES=111, PETRI_TRANSITIONS=89} [2024-10-13 16:50:43,541 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 44 predicate places. [2024-10-13 16:50:43,541 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 89 transitions, 442 flow [2024-10-13 16:50:43,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 25.789473684210527) internal successors, (490), 19 states have internal predecessors, (490), 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 16:50:43,542 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:50:43,542 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:50:43,554 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 16:50:43,742 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,SelfDestructingSolverStorable15 [2024-10-13 16:50:43,742 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-13 16:50:43,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:43,743 INFO L85 PathProgramCache]: Analyzing trace with hash -2075008593, now seen corresponding path program 1 times [2024-10-13 16:50:43,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:43,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132621244] [2024-10-13 16:50:43,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:43,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:43,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:43,809 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 16:50:43,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:43,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132621244] [2024-10-13 16:50:43,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132621244] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:50:43,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702891846] [2024-10-13 16:50:43,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:43,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:43,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:50:43,812 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 16:50:43,813 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 16:50:43,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:43,893 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 16:50:43,894 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:50:43,986 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 16:50:43,986 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:50:44,099 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 16:50:44,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702891846] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:50:44,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:50:44,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-10-13 16:50:44,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824710805] [2024-10-13 16:50:44,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:50:44,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-13 16:50:44,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:44,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-13 16:50:44,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-10-13 16:50:44,255 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 64 [2024-10-13 16:50:44,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 89 transitions, 442 flow. Second operand has 19 states, 19 states have (on average 24.31578947368421) internal successors, (462), 19 states have internal predecessors, (462), 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 16:50:44,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:44,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 64 [2024-10-13 16:50:44,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:50:48,316 INFO L124 PetriNetUnfolderBase]: 30062/42243 cut-off events. [2024-10-13 16:50:48,316 INFO L125 PetriNetUnfolderBase]: For 108707/111130 co-relation queries the response was YES. [2024-10-13 16:50:48,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136767 conditions, 42243 events. 30062/42243 cut-off events. For 108707/111130 co-relation queries the response was YES. Maximal size of possible extension queue 1165. Compared 284583 event pairs, 7088 based on Foata normal form. 797/42218 useless extension candidates. Maximal degree in co-relation 111474. Up to 7901 conditions per place. [2024-10-13 16:50:48,612 INFO L140 encePairwiseOnDemand]: 54/64 looper letters, 166 selfloop transitions, 19 changer transitions 77/281 dead transitions. [2024-10-13 16:50:48,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 281 transitions, 1962 flow [2024-10-13 16:50:48,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 16:50:48,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-13 16:50:48,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 498 transitions. [2024-10-13 16:50:48,615 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5558035714285714 [2024-10-13 16:50:48,615 INFO L175 Difference]: Start difference. First operand has 111 places, 89 transitions, 442 flow. Second operand 14 states and 498 transitions. [2024-10-13 16:50:48,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 281 transitions, 1962 flow [2024-10-13 16:50:48,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 281 transitions, 1817 flow, removed 31 selfloop flow, removed 11 redundant places. [2024-10-13 16:50:48,825 INFO L231 Difference]: Finished difference. Result has 113 places, 76 transitions, 357 flow [2024-10-13 16:50:48,825 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=357, PETRI_PLACES=113, PETRI_TRANSITIONS=76} [2024-10-13 16:50:48,826 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 46 predicate places. [2024-10-13 16:50:48,826 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 76 transitions, 357 flow [2024-10-13 16:50:48,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 24.31578947368421) internal successors, (462), 19 states have internal predecessors, (462), 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 16:50:48,826 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:50:48,826 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:50:48,844 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 16:50:49,027 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,SelfDestructingSolverStorable16 [2024-10-13 16:50:49,027 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-13 16:50:49,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:49,028 INFO L85 PathProgramCache]: Analyzing trace with hash -530621422, now seen corresponding path program 1 times [2024-10-13 16:50:49,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:49,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231508676] [2024-10-13 16:50:49,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:49,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:49,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:49,103 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 16:50:49,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:49,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231508676] [2024-10-13 16:50:49,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231508676] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:50:49,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776618360] [2024-10-13 16:50:49,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:49,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:49,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:50:49,106 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 16:50:49,107 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 16:50:49,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:49,182 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:50:49,183 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:50:49,206 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 16:50:49,207 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:50:49,250 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 16:50:49,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776618360] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:50:49,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:50:49,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-13 16:50:49,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439210364] [2024-10-13 16:50:49,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:50:49,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 16:50:49,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:49,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 16:50:49,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-13 16:50:49,278 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 64 [2024-10-13 16:50:49,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 76 transitions, 357 flow. Second operand has 12 states, 12 states have (on average 27.0) internal successors, (324), 12 states have internal predecessors, (324), 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 16:50:49,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:49,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 64 [2024-10-13 16:50:49,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:50:54,379 INFO L124 PetriNetUnfolderBase]: 37201/53641 cut-off events. [2024-10-13 16:50:54,379 INFO L125 PetriNetUnfolderBase]: For 112691/116393 co-relation queries the response was YES. [2024-10-13 16:50:54,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168291 conditions, 53641 events. 37201/53641 cut-off events. For 112691/116393 co-relation queries the response was YES. Maximal size of possible extension queue 1195. Compared 375451 event pairs, 12361 based on Foata normal form. 1560/54684 useless extension candidates. Maximal degree in co-relation 168199. Up to 21257 conditions per place. [2024-10-13 16:50:54,760 INFO L140 encePairwiseOnDemand]: 59/64 looper letters, 264 selfloop transitions, 13 changer transitions 0/297 dead transitions. [2024-10-13 16:50:54,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 297 transitions, 2041 flow [2024-10-13 16:50:54,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 16:50:54,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 16:50:54,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 445 transitions. [2024-10-13 16:50:54,761 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6953125 [2024-10-13 16:50:54,761 INFO L175 Difference]: Start difference. First operand has 113 places, 76 transitions, 357 flow. Second operand 10 states and 445 transitions. [2024-10-13 16:50:54,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 297 transitions, 2041 flow [2024-10-13 16:50:54,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 297 transitions, 1830 flow, removed 31 selfloop flow, removed 14 redundant places. [2024-10-13 16:50:54,895 INFO L231 Difference]: Finished difference. Result has 101 places, 85 transitions, 368 flow [2024-10-13 16:50:54,896 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=368, PETRI_PLACES=101, PETRI_TRANSITIONS=85} [2024-10-13 16:50:54,896 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 34 predicate places. [2024-10-13 16:50:54,896 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 85 transitions, 368 flow [2024-10-13 16:50:54,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 27.0) internal successors, (324), 12 states have internal predecessors, (324), 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 16:50:54,896 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:50:54,896 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:50:54,909 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 16:50:55,097 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,SelfDestructingSolverStorable17 [2024-10-13 16:50:55,097 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-13 16:50:55,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:55,098 INFO L85 PathProgramCache]: Analyzing trace with hash 208596972, now seen corresponding path program 1 times [2024-10-13 16:50:55,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:55,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952663176] [2024-10-13 16:50:55,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:55,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:55,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:55,155 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 16:50:55,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:55,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952663176] [2024-10-13 16:50:55,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952663176] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:50:55,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599755169] [2024-10-13 16:50:55,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:55,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:55,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:50:55,158 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 16:50:55,160 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 16:50:55,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:55,252 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:50:55,253 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:50:55,283 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 16:50:55,284 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:50:55,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599755169] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:50:55,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:50:55,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-13 16:50:55,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547770729] [2024-10-13 16:50:55,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:50:55,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:50:55,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:55,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:50:55,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-13 16:50:55,296 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2024-10-13 16:50:55,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 85 transitions, 368 flow. Second operand has 6 states, 6 states have (on average 28.666666666666668) internal successors, (172), 6 states have internal predecessors, (172), 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 16:50:55,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:55,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2024-10-13 16:50:55,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand