./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-horseshoe.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 61a67961 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-horseshoe.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 ceb2af5016fd0ad74653237fbc44a2b3541e4ff971325e3807dab6f19c05af6d --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-15 00:02:55,505 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-15 00:02:55,590 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-15 00:02:55,594 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-15 00:02:55,595 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-15 00:02:55,627 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-15 00:02:55,628 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-15 00:02:55,628 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-15 00:02:55,629 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-15 00:02:55,629 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-15 00:02:55,630 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-15 00:02:55,630 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-15 00:02:55,631 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-15 00:02:55,631 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-15 00:02:55,632 INFO L153 SettingsManager]: * Use SBE=true [2024-10-15 00:02:55,632 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-15 00:02:55,632 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-15 00:02:55,633 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-15 00:02:55,633 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-15 00:02:55,634 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-15 00:02:55,634 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-15 00:02:55,635 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-15 00:02:55,635 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-15 00:02:55,636 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-15 00:02:55,636 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-15 00:02:55,636 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-15 00:02:55,637 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-15 00:02:55,637 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-15 00:02:55,637 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-15 00:02:55,638 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-15 00:02:55,638 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-15 00:02:55,638 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-15 00:02:55,639 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-15 00:02:55,639 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-15 00:02:55,639 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 00:02:55,640 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-15 00:02:55,640 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-15 00:02:55,640 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-15 00:02:55,641 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-15 00:02:55,641 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-15 00:02:55,641 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-15 00:02:55,642 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-15 00:02:55,642 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-15 00:02:55,642 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-15 00:02:55,642 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ceb2af5016fd0ad74653237fbc44a2b3541e4ff971325e3807dab6f19c05af6d [2024-10-15 00:02:55,879 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-15 00:02:55,906 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-15 00:02:55,910 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-15 00:02:55,912 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-15 00:02:55,915 INFO L274 PluginConnector]: CDTParser initialized [2024-10-15 00:02:55,916 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c [2024-10-15 00:02:57,346 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-15 00:02:57,563 INFO L384 CDTParser]: Found 1 translation units. [2024-10-15 00:02:57,563 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c [2024-10-15 00:02:57,572 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd030f328/a4682de02cbf47b9a40f4fb3b13fb34c/FLAG1e7aa166a [2024-10-15 00:02:57,586 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd030f328/a4682de02cbf47b9a40f4fb3b13fb34c [2024-10-15 00:02:57,588 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-15 00:02:57,589 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-15 00:02:57,590 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-15 00:02:57,590 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-15 00:02:57,596 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-15 00:02:57,597 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:02:57" (1/1) ... [2024-10-15 00:02:57,598 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57b2f666 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:57, skipping insertion in model container [2024-10-15 00:02:57,598 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:02:57" (1/1) ... [2024-10-15 00:02:57,629 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-15 00:02:57,825 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 00:02:57,836 INFO L200 MainTranslator]: Completed pre-run [2024-10-15 00:02:57,869 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 00:02:57,886 INFO L204 MainTranslator]: Completed translation [2024-10-15 00:02:57,887 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:57 WrapperNode [2024-10-15 00:02:57,887 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-15 00:02:57,888 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-15 00:02:57,888 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-15 00:02:57,888 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-15 00:02:57,895 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:57" (1/1) ... [2024-10-15 00:02:57,908 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:57" (1/1) ... [2024-10-15 00:02:57,955 INFO L138 Inliner]: procedures = 24, calls = 41, calls flagged for inlining = 17, calls inlined = 19, statements flattened = 267 [2024-10-15 00:02:57,956 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-15 00:02:57,956 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-15 00:02:57,957 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-15 00:02:57,957 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-15 00:02:57,969 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:57" (1/1) ... [2024-10-15 00:02:57,970 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:57" (1/1) ... [2024-10-15 00:02:57,978 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:57" (1/1) ... [2024-10-15 00:02:58,011 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-10-15 00:02:58,015 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:57" (1/1) ... [2024-10-15 00:02:58,015 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:57" (1/1) ... [2024-10-15 00:02:58,028 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:57" (1/1) ... [2024-10-15 00:02:58,033 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:57" (1/1) ... [2024-10-15 00:02:58,035 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:57" (1/1) ... [2024-10-15 00:02:58,040 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:57" (1/1) ... [2024-10-15 00:02:58,044 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-15 00:02:58,045 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-15 00:02:58,046 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-15 00:02:58,046 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-15 00:02:58,047 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:57" (1/1) ... [2024-10-15 00:02:58,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 00:02:58,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:58,079 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) [2024-10-15 00:02:58,081 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 [2024-10-15 00:02:58,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-15 00:02:58,121 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-15 00:02:58,121 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-15 00:02:58,121 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-15 00:02:58,122 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-15 00:02:58,122 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-15 00:02:58,122 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-15 00:02:58,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-15 00:02:58,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-15 00:02:58,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-15 00:02:58,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-15 00:02:58,126 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-15 00:02:58,126 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-15 00:02:58,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-15 00:02:58,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-15 00:02:58,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-15 00:02:58,127 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-15 00:02:58,127 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-15 00:02:58,129 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-15 00:02:58,232 INFO L238 CfgBuilder]: Building ICFG [2024-10-15 00:02:58,235 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-15 00:02:58,744 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-15 00:02:58,744 INFO L287 CfgBuilder]: Performing block encoding [2024-10-15 00:02:59,092 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-15 00:02:59,092 INFO L314 CfgBuilder]: Removed 5 assume(true) statements. [2024-10-15 00:02:59,092 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:02:59 BoogieIcfgContainer [2024-10-15 00:02:59,092 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-15 00:02:59,096 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-15 00:02:59,096 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-15 00:02:59,100 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-15 00:02:59,100 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 12:02:57" (1/3) ... [2024-10-15 00:02:59,101 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f7a6567 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:02:59, skipping insertion in model container [2024-10-15 00:02:59,101 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:57" (2/3) ... [2024-10-15 00:02:59,102 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f7a6567 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:02:59, skipping insertion in model container [2024-10-15 00:02:59,102 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:02:59" (3/3) ... [2024-10-15 00:02:59,104 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-horseshoe.wvr.c [2024-10-15 00:02:59,121 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-15 00:02:59,121 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2024-10-15 00:02:59,121 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-15 00:02:59,187 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-15 00:02:59,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 79 transitions, 179 flow [2024-10-15 00:02:59,273 INFO L124 PetriNetUnfolderBase]: 7/76 cut-off events. [2024-10-15 00:02:59,273 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-15 00:02:59,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 7/76 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 220 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2024-10-15 00:02:59,278 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 79 transitions, 179 flow [2024-10-15 00:02:59,282 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 75 transitions, 168 flow [2024-10-15 00:02:59,294 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-15 00:02:59,303 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;@1d184a26, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-15 00:02:59,303 INFO L334 AbstractCegarLoop]: Starting to check reachability of 47 error locations. [2024-10-15 00:02:59,306 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-15 00:02:59,306 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-15 00:02:59,306 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-15 00:02:59,306 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:59,307 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-15 00:02:59,307 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-10-15 00:02:59,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:59,312 INFO L85 PathProgramCache]: Analyzing trace with hash 812992, now seen corresponding path program 1 times [2024-10-15 00:02:59,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:59,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452288958] [2024-10-15 00:02:59,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:59,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:59,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:59,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:59,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:59,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452288958] [2024-10-15 00:02:59,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452288958] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:02:59,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:02:59,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 00:02:59,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317724386] [2024-10-15 00:02:59,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:02:59,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:02:59,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:59,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:02:59,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:02:59,682 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 79 [2024-10-15 00:02:59,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 75 transitions, 168 flow. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:59,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:59,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 79 [2024-10-15 00:02:59,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:00,384 INFO L124 PetriNetUnfolderBase]: 2722/4569 cut-off events. [2024-10-15 00:03:00,385 INFO L125 PetriNetUnfolderBase]: For 195/195 co-relation queries the response was YES. [2024-10-15 00:03:00,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8613 conditions, 4569 events. 2722/4569 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 29882 event pairs, 2432 based on Foata normal form. 291/3432 useless extension candidates. Maximal degree in co-relation 8140. Up to 3790 conditions per place. [2024-10-15 00:03:00,433 INFO L140 encePairwiseOnDemand]: 61/79 looper letters, 41 selfloop transitions, 7 changer transitions 0/74 dead transitions. [2024-10-15 00:03:00,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 74 transitions, 262 flow [2024-10-15 00:03:00,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:03:00,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:03:00,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 175 transitions. [2024-10-15 00:03:00,450 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5537974683544303 [2024-10-15 00:03:00,452 INFO L175 Difference]: Start difference. First operand has 78 places, 75 transitions, 168 flow. Second operand 4 states and 175 transitions. [2024-10-15 00:03:00,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 74 transitions, 262 flow [2024-10-15 00:03:00,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 74 transitions, 250 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-15 00:03:00,469 INFO L231 Difference]: Finished difference. Result has 73 places, 74 transitions, 202 flow [2024-10-15 00:03:00,471 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=202, PETRI_PLACES=73, PETRI_TRANSITIONS=74} [2024-10-15 00:03:00,476 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, -5 predicate places. [2024-10-15 00:03:00,477 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 74 transitions, 202 flow [2024-10-15 00:03:00,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:00,477 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:00,477 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-15 00:03:00,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-15 00:03:00,478 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-10-15 00:03:00,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:00,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1549173020, now seen corresponding path program 1 times [2024-10-15 00:03:00,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:00,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438219312] [2024-10-15 00:03:00,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:00,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:00,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:00,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:00,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:00,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438219312] [2024-10-15 00:03:00,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438219312] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:03:00,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387153177] [2024-10-15 00:03:00,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:00,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:00,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:03:00,656 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) [2024-10-15 00:03:00,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-15 00:03:00,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:00,730 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-15 00:03:00,733 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:03:00,786 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:00,786 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 00:03:00,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387153177] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:03:00,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-15 00:03:00,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-15 00:03:00,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16566063] [2024-10-15 00:03:00,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:03:00,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-15 00:03:00,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:00,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-15 00:03:00,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-15 00:03:00,810 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 79 [2024-10-15 00:03:00,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 74 transitions, 202 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 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) [2024-10-15 00:03:00,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:00,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 79 [2024-10-15 00:03:00,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:01,358 INFO L124 PetriNetUnfolderBase]: 2722/4567 cut-off events. [2024-10-15 00:03:01,359 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2024-10-15 00:03:01,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8475 conditions, 4567 events. 2722/4567 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 29890 event pairs, 2432 based on Foata normal form. 2/3144 useless extension candidates. Maximal degree in co-relation 8425. Up to 3780 conditions per place. [2024-10-15 00:03:01,441 INFO L140 encePairwiseOnDemand]: 70/79 looper letters, 34 selfloop transitions, 12 changer transitions 0/72 dead transitions. [2024-10-15 00:03:01,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 72 transitions, 286 flow [2024-10-15 00:03:01,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-15 00:03:01,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-15 00:03:01,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 222 transitions. [2024-10-15 00:03:01,445 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46835443037974683 [2024-10-15 00:03:01,445 INFO L175 Difference]: Start difference. First operand has 73 places, 74 transitions, 202 flow. Second operand 6 states and 222 transitions. [2024-10-15 00:03:01,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 72 transitions, 286 flow [2024-10-15 00:03:01,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 72 transitions, 286 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-15 00:03:01,451 INFO L231 Difference]: Finished difference. Result has 76 places, 72 transitions, 218 flow [2024-10-15 00:03:01,451 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=218, PETRI_PLACES=76, PETRI_TRANSITIONS=72} [2024-10-15 00:03:01,452 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, -2 predicate places. [2024-10-15 00:03:01,452 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 72 transitions, 218 flow [2024-10-15 00:03:01,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 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) [2024-10-15 00:03:01,453 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:01,454 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-15 00:03:01,472 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-15 00:03:01,654 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 [2024-10-15 00:03:01,655 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-10-15 00:03:01,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:01,656 INFO L85 PathProgramCache]: Analyzing trace with hash -779722574, now seen corresponding path program 1 times [2024-10-15 00:03:01,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:01,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344066616] [2024-10-15 00:03:01,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:01,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:01,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:01,782 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:01,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:01,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344066616] [2024-10-15 00:03:01,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344066616] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:03:01,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056213543] [2024-10-15 00:03:01,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:01,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:01,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:03:01,786 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) [2024-10-15 00:03:01,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-15 00:03:01,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:01,857 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-15 00:03:01,858 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:03:01,886 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:01,886 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:03:01,931 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:01,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056213543] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:03:01,932 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:03:01,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-15 00:03:01,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289311633] [2024-10-15 00:03:01,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:03:01,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-15 00:03:01,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:01,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-15 00:03:01,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-15 00:03:01,965 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 79 [2024-10-15 00:03:01,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 72 transitions, 218 flow. Second operand has 12 states, 12 states have (on average 30.083333333333332) internal successors, (361), 12 states have internal predecessors, (361), 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) [2024-10-15 00:03:01,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:01,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 79 [2024-10-15 00:03:01,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:02,655 INFO L124 PetriNetUnfolderBase]: 2728/4591 cut-off events. [2024-10-15 00:03:02,655 INFO L125 PetriNetUnfolderBase]: For 87/87 co-relation queries the response was YES. [2024-10-15 00:03:02,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8569 conditions, 4591 events. 2728/4591 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 30116 event pairs, 2432 based on Foata normal form. 6/3171 useless extension candidates. Maximal degree in co-relation 8427. Up to 3791 conditions per place. [2024-10-15 00:03:02,689 INFO L140 encePairwiseOnDemand]: 70/79 looper letters, 39 selfloop transitions, 25 changer transitions 0/90 dead transitions. [2024-10-15 00:03:02,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 90 transitions, 460 flow [2024-10-15 00:03:02,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-15 00:03:02,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-15 00:03:02,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 360 transitions. [2024-10-15 00:03:02,694 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45569620253164556 [2024-10-15 00:03:02,695 INFO L175 Difference]: Start difference. First operand has 76 places, 72 transitions, 218 flow. Second operand 10 states and 360 transitions. [2024-10-15 00:03:02,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 90 transitions, 460 flow [2024-10-15 00:03:02,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 90 transitions, 402 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-10-15 00:03:02,700 INFO L231 Difference]: Finished difference. Result has 83 places, 90 transitions, 358 flow [2024-10-15 00:03:02,701 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=358, PETRI_PLACES=83, PETRI_TRANSITIONS=90} [2024-10-15 00:03:02,702 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 5 predicate places. [2024-10-15 00:03:02,703 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 90 transitions, 358 flow [2024-10-15 00:03:02,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 30.083333333333332) internal successors, (361), 12 states have internal predecessors, (361), 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) [2024-10-15 00:03:02,704 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:02,704 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:03:02,722 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-15 00:03:02,905 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 [2024-10-15 00:03:02,905 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-10-15 00:03:02,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:02,906 INFO L85 PathProgramCache]: Analyzing trace with hash -698766873, now seen corresponding path program 1 times [2024-10-15 00:03:02,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:02,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555193533] [2024-10-15 00:03:02,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:02,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:02,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:03,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:03,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:03,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555193533] [2024-10-15 00:03:03,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555193533] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:03:03,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:03:03,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 00:03:03,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841721326] [2024-10-15 00:03:03,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:03:03,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:03:03,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:03,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:03:03,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:03:03,032 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 79 [2024-10-15 00:03:03,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 90 transitions, 358 flow. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:03,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:03,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 79 [2024-10-15 00:03:03,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:03,548 INFO L124 PetriNetUnfolderBase]: 2865/4869 cut-off events. [2024-10-15 00:03:03,548 INFO L125 PetriNetUnfolderBase]: For 148/148 co-relation queries the response was YES. [2024-10-15 00:03:03,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9137 conditions, 4869 events. 2865/4869 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 31926 event pairs, 2559 based on Foata normal form. 98/3605 useless extension candidates. Maximal degree in co-relation 9041. Up to 3806 conditions per place. [2024-10-15 00:03:03,594 INFO L140 encePairwiseOnDemand]: 68/79 looper letters, 85 selfloop transitions, 5 changer transitions 1/119 dead transitions. [2024-10-15 00:03:03,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 119 transitions, 674 flow [2024-10-15 00:03:03,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-15 00:03:03,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-15 00:03:03,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 232 transitions. [2024-10-15 00:03:03,596 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5873417721518988 [2024-10-15 00:03:03,596 INFO L175 Difference]: Start difference. First operand has 83 places, 90 transitions, 358 flow. Second operand 5 states and 232 transitions. [2024-10-15 00:03:03,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 119 transitions, 674 flow [2024-10-15 00:03:03,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 119 transitions, 640 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-10-15 00:03:03,605 INFO L231 Difference]: Finished difference. Result has 87 places, 92 transitions, 377 flow [2024-10-15 00:03:03,607 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=377, PETRI_PLACES=87, PETRI_TRANSITIONS=92} [2024-10-15 00:03:03,608 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 9 predicate places. [2024-10-15 00:03:03,608 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 92 transitions, 377 flow [2024-10-15 00:03:03,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:03,609 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:03,609 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:03:03,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-15 00:03:03,609 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-10-15 00:03:03,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:03,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1450275061, now seen corresponding path program 1 times [2024-10-15 00:03:03,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:03,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141490439] [2024-10-15 00:03:03,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:03,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:03,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:03,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:03,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:03,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141490439] [2024-10-15 00:03:03,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141490439] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:03:03,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938087485] [2024-10-15 00:03:03,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:03,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:03,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:03:03,796 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) [2024-10-15 00:03:03,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-15 00:03:03,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:03,880 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-15 00:03:03,881 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:03:03,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:03:03,901 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 00:03:03,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938087485] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:03:03,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-15 00:03:03,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-10-15 00:03:03,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804868006] [2024-10-15 00:03:03,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:03:03,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-15 00:03:03,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:03,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-15 00:03:03,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-15 00:03:03,904 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 79 [2024-10-15 00:03:03,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 92 transitions, 377 flow. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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) [2024-10-15 00:03:03,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:03,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 79 [2024-10-15 00:03:03,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:04,288 INFO L124 PetriNetUnfolderBase]: 1998/3413 cut-off events. [2024-10-15 00:03:04,288 INFO L125 PetriNetUnfolderBase]: For 451/451 co-relation queries the response was YES. [2024-10-15 00:03:04,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6801 conditions, 3413 events. 1998/3413 cut-off events. For 451/451 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 20788 event pairs, 1754 based on Foata normal form. 0/2716 useless extension candidates. Maximal degree in co-relation 6706. Up to 2847 conditions per place. [2024-10-15 00:03:04,316 INFO L140 encePairwiseOnDemand]: 75/79 looper letters, 60 selfloop transitions, 1 changer transitions 0/89 dead transitions. [2024-10-15 00:03:04,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 89 transitions, 487 flow [2024-10-15 00:03:04,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-15 00:03:04,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-15 00:03:04,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 137 transitions. [2024-10-15 00:03:04,318 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5780590717299579 [2024-10-15 00:03:04,318 INFO L175 Difference]: Start difference. First operand has 87 places, 92 transitions, 377 flow. Second operand 3 states and 137 transitions. [2024-10-15 00:03:04,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 89 transitions, 487 flow [2024-10-15 00:03:04,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 89 transitions, 483 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-15 00:03:04,416 INFO L231 Difference]: Finished difference. Result has 85 places, 89 transitions, 363 flow [2024-10-15 00:03:04,417 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=363, PETRI_PLACES=85, PETRI_TRANSITIONS=89} [2024-10-15 00:03:04,417 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 7 predicate places. [2024-10-15 00:03:04,417 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 89 transitions, 363 flow [2024-10-15 00:03:04,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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) [2024-10-15 00:03:04,418 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:04,418 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:03:04,438 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-15 00:03:04,622 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 [2024-10-15 00:03:04,622 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-10-15 00:03:04,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:04,623 INFO L85 PathProgramCache]: Analyzing trace with hash 971362461, now seen corresponding path program 1 times [2024-10-15 00:03:04,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:04,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039259384] [2024-10-15 00:03:04,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:04,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:04,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:04,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:04,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:04,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039259384] [2024-10-15 00:03:04,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039259384] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:03:04,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:03:04,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-15 00:03:04,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203490942] [2024-10-15 00:03:04,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:03:04,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-15 00:03:04,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:04,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-15 00:03:04,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-15 00:03:04,667 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 79 [2024-10-15 00:03:04,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 89 transitions, 363 flow. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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) [2024-10-15 00:03:04,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:04,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 79 [2024-10-15 00:03:04,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:04,972 INFO L124 PetriNetUnfolderBase]: 2002/3445 cut-off events. [2024-10-15 00:03:04,972 INFO L125 PetriNetUnfolderBase]: For 519/519 co-relation queries the response was YES. [2024-10-15 00:03:04,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6964 conditions, 3445 events. 2002/3445 cut-off events. For 519/519 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 19989 event pairs, 750 based on Foata normal form. 72/2808 useless extension candidates. Maximal degree in co-relation 6948. Up to 2102 conditions per place. [2024-10-15 00:03:04,992 INFO L140 encePairwiseOnDemand]: 75/79 looper letters, 74 selfloop transitions, 2 changer transitions 1/105 dead transitions. [2024-10-15 00:03:04,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 105 transitions, 557 flow [2024-10-15 00:03:04,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-15 00:03:04,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-15 00:03:04,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 152 transitions. [2024-10-15 00:03:04,994 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6413502109704642 [2024-10-15 00:03:04,994 INFO L175 Difference]: Start difference. First operand has 85 places, 89 transitions, 363 flow. Second operand 3 states and 152 transitions. [2024-10-15 00:03:04,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 105 transitions, 557 flow [2024-10-15 00:03:04,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 105 transitions, 546 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-15 00:03:04,997 INFO L231 Difference]: Finished difference. Result has 86 places, 89 transitions, 358 flow [2024-10-15 00:03:04,998 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=358, PETRI_PLACES=86, PETRI_TRANSITIONS=89} [2024-10-15 00:03:04,998 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 8 predicate places. [2024-10-15 00:03:04,999 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 89 transitions, 358 flow [2024-10-15 00:03:04,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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) [2024-10-15 00:03:04,999 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:04,999 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:03:04,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-15 00:03:04,999 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-10-15 00:03:05,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:05,000 INFO L85 PathProgramCache]: Analyzing trace with hash -2144902098, now seen corresponding path program 1 times [2024-10-15 00:03:05,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:05,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786561226] [2024-10-15 00:03:05,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:05,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:05,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:05,059 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:03:05,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:05,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786561226] [2024-10-15 00:03:05,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786561226] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:03:05,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:03:05,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-15 00:03:05,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637930167] [2024-10-15 00:03:05,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:03:05,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:03:05,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:05,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:03:05,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:03:05,070 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 79 [2024-10-15 00:03:05,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 89 transitions, 358 flow. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 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) [2024-10-15 00:03:05,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:05,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 79 [2024-10-15 00:03:05,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:05,751 INFO L124 PetriNetUnfolderBase]: 4006/6941 cut-off events. [2024-10-15 00:03:05,752 INFO L125 PetriNetUnfolderBase]: For 1082/1085 co-relation queries the response was YES. [2024-10-15 00:03:05,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14207 conditions, 6941 events. 4006/6941 cut-off events. For 1082/1085 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 45693 event pairs, 2542 based on Foata normal form. 136/5905 useless extension candidates. Maximal degree in co-relation 14190. Up to 4305 conditions per place. [2024-10-15 00:03:05,790 INFO L140 encePairwiseOnDemand]: 73/79 looper letters, 102 selfloop transitions, 4 changer transitions 0/131 dead transitions. [2024-10-15 00:03:05,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 131 transitions, 682 flow [2024-10-15 00:03:05,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:03:05,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:03:05,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 200 transitions. [2024-10-15 00:03:05,792 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6329113924050633 [2024-10-15 00:03:05,792 INFO L175 Difference]: Start difference. First operand has 86 places, 89 transitions, 358 flow. Second operand 4 states and 200 transitions. [2024-10-15 00:03:05,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 131 transitions, 682 flow [2024-10-15 00:03:05,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 131 transitions, 678 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-15 00:03:05,795 INFO L231 Difference]: Finished difference. Result has 90 places, 92 transitions, 385 flow [2024-10-15 00:03:05,795 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=385, PETRI_PLACES=90, PETRI_TRANSITIONS=92} [2024-10-15 00:03:05,796 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 12 predicate places. [2024-10-15 00:03:05,796 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 92 transitions, 385 flow [2024-10-15 00:03:05,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 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) [2024-10-15 00:03:05,799 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:05,799 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:03:05,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-15 00:03:05,799 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-10-15 00:03:05,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:05,800 INFO L85 PathProgramCache]: Analyzing trace with hash 269952940, now seen corresponding path program 1 times [2024-10-15 00:03:05,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:05,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321795833] [2024-10-15 00:03:05,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:05,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:05,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:05,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:03:05,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:05,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321795833] [2024-10-15 00:03:05,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321795833] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:03:05,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:03:05,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 00:03:05,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495719321] [2024-10-15 00:03:05,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:03:05,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-15 00:03:05,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:05,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-15 00:03:05,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-15 00:03:05,859 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 79 [2024-10-15 00:03:05,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 92 transitions, 385 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 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) [2024-10-15 00:03:05,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:05,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 79 [2024-10-15 00:03:05,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:06,192 INFO L124 PetriNetUnfolderBase]: 2114/3830 cut-off events. [2024-10-15 00:03:06,192 INFO L125 PetriNetUnfolderBase]: For 1149/1476 co-relation queries the response was YES. [2024-10-15 00:03:06,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8507 conditions, 3830 events. 2114/3830 cut-off events. For 1149/1476 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 23744 event pairs, 948 based on Foata normal form. 131/3336 useless extension candidates. Maximal degree in co-relation 8488. Up to 2794 conditions per place. [2024-10-15 00:03:06,225 INFO L140 encePairwiseOnDemand]: 75/79 looper letters, 69 selfloop transitions, 3 changer transitions 0/101 dead transitions. [2024-10-15 00:03:06,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 101 transitions, 553 flow [2024-10-15 00:03:06,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-15 00:03:06,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-15 00:03:06,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 145 transitions. [2024-10-15 00:03:06,227 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6118143459915611 [2024-10-15 00:03:06,227 INFO L175 Difference]: Start difference. First operand has 90 places, 92 transitions, 385 flow. Second operand 3 states and 145 transitions. [2024-10-15 00:03:06,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 101 transitions, 553 flow [2024-10-15 00:03:06,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 101 transitions, 550 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-15 00:03:06,231 INFO L231 Difference]: Finished difference. Result has 92 places, 94 transitions, 405 flow [2024-10-15 00:03:06,232 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=405, PETRI_PLACES=92, PETRI_TRANSITIONS=94} [2024-10-15 00:03:06,232 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 14 predicate places. [2024-10-15 00:03:06,232 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 94 transitions, 405 flow [2024-10-15 00:03:06,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 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) [2024-10-15 00:03:06,233 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:06,233 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-15 00:03:06,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-15 00:03:06,233 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-10-15 00:03:06,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:06,234 INFO L85 PathProgramCache]: Analyzing trace with hash -54126506, now seen corresponding path program 2 times [2024-10-15 00:03:06,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:06,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030968940] [2024-10-15 00:03:06,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:06,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:06,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:06,395 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:06,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:06,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030968940] [2024-10-15 00:03:06,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030968940] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:03:06,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526392257] [2024-10-15 00:03:06,396 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 00:03:06,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:06,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:03:06,399 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) [2024-10-15 00:03:06,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-15 00:03:06,471 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-15 00:03:06,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 00:03:06,472 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-15 00:03:06,474 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:03:06,528 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-15 00:03:06,528 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:03:06,569 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-15 00:03:06,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526392257] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:03:06,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:03:06,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-10-15 00:03:06,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831862929] [2024-10-15 00:03:06,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:03:06,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-15 00:03:06,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:06,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-15 00:03:06,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-15 00:03:06,610 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 79 [2024-10-15 00:03:06,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 94 transitions, 405 flow. Second operand has 14 states, 14 states have (on average 30.142857142857142) internal successors, (422), 14 states have internal predecessors, (422), 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) [2024-10-15 00:03:06,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:06,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 79 [2024-10-15 00:03:06,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:07,279 INFO L124 PetriNetUnfolderBase]: 2117/3773 cut-off events. [2024-10-15 00:03:07,279 INFO L125 PetriNetUnfolderBase]: For 1975/2369 co-relation queries the response was YES. [2024-10-15 00:03:07,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8699 conditions, 3773 events. 2117/3773 cut-off events. For 1975/2369 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 23052 event pairs, 1648 based on Foata normal form. 137/3284 useless extension candidates. Maximal degree in co-relation 8678. Up to 2983 conditions per place. [2024-10-15 00:03:07,314 INFO L140 encePairwiseOnDemand]: 70/79 looper letters, 33 selfloop transitions, 36 changer transitions 2/98 dead transitions. [2024-10-15 00:03:07,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 98 transitions, 565 flow [2024-10-15 00:03:07,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-15 00:03:07,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-15 00:03:07,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 475 transitions. [2024-10-15 00:03:07,316 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4294755877034358 [2024-10-15 00:03:07,317 INFO L175 Difference]: Start difference. First operand has 92 places, 94 transitions, 405 flow. Second operand 14 states and 475 transitions. [2024-10-15 00:03:07,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 98 transitions, 565 flow [2024-10-15 00:03:07,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 98 transitions, 531 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-10-15 00:03:07,322 INFO L231 Difference]: Finished difference. Result has 98 places, 96 transitions, 447 flow [2024-10-15 00:03:07,322 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=447, PETRI_PLACES=98, PETRI_TRANSITIONS=96} [2024-10-15 00:03:07,323 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 20 predicate places. [2024-10-15 00:03:07,323 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 96 transitions, 447 flow [2024-10-15 00:03:07,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 30.142857142857142) internal successors, (422), 14 states have internal predecessors, (422), 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) [2024-10-15 00:03:07,323 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:07,324 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:03:07,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-15 00:03:07,527 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 [2024-10-15 00:03:07,528 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-10-15 00:03:07,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:07,529 INFO L85 PathProgramCache]: Analyzing trace with hash 485629164, now seen corresponding path program 1 times [2024-10-15 00:03:07,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:07,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785430137] [2024-10-15 00:03:07,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:07,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:07,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:07,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:03:07,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:07,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785430137] [2024-10-15 00:03:07,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785430137] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:03:07,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:03:07,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-15 00:03:07,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839486301] [2024-10-15 00:03:07,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:03:07,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:03:07,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:07,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:03:07,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:03:07,631 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 79 [2024-10-15 00:03:07,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 96 transitions, 447 flow. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 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) [2024-10-15 00:03:07,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:07,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 79 [2024-10-15 00:03:07,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:08,183 INFO L124 PetriNetUnfolderBase]: 2338/4132 cut-off events. [2024-10-15 00:03:08,183 INFO L125 PetriNetUnfolderBase]: For 1377/1817 co-relation queries the response was YES. [2024-10-15 00:03:08,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9176 conditions, 4132 events. 2338/4132 cut-off events. For 1377/1817 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 25273 event pairs, 1835 based on Foata normal form. 224/3724 useless extension candidates. Maximal degree in co-relation 9158. Up to 2899 conditions per place. [2024-10-15 00:03:08,208 INFO L140 encePairwiseOnDemand]: 70/79 looper letters, 74 selfloop transitions, 9 changer transitions 6/116 dead transitions. [2024-10-15 00:03:08,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 116 transitions, 693 flow [2024-10-15 00:03:08,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-15 00:03:08,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-15 00:03:08,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 225 transitions. [2024-10-15 00:03:08,211 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.569620253164557 [2024-10-15 00:03:08,211 INFO L175 Difference]: Start difference. First operand has 98 places, 96 transitions, 447 flow. Second operand 5 states and 225 transitions. [2024-10-15 00:03:08,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 116 transitions, 693 flow [2024-10-15 00:03:08,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 116 transitions, 550 flow, removed 16 selfloop flow, removed 14 redundant places. [2024-10-15 00:03:08,219 INFO L231 Difference]: Finished difference. Result has 87 places, 96 transitions, 341 flow [2024-10-15 00:03:08,219 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=341, PETRI_PLACES=87, PETRI_TRANSITIONS=96} [2024-10-15 00:03:08,220 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 9 predicate places. [2024-10-15 00:03:08,220 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 96 transitions, 341 flow [2024-10-15 00:03:08,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 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) [2024-10-15 00:03:08,222 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:08,222 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:03:08,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-15 00:03:08,223 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-10-15 00:03:08,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:08,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1532008515, now seen corresponding path program 1 times [2024-10-15 00:03:08,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:08,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811266040] [2024-10-15 00:03:08,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:08,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:08,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:08,367 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:08,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:08,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811266040] [2024-10-15 00:03:08,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811266040] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:03:08,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947554340] [2024-10-15 00:03:08,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:08,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:08,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:03:08,371 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) [2024-10-15 00:03:08,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-15 00:03:08,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:08,451 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-15 00:03:08,452 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:03:08,551 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:08,551 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:03:08,685 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:08,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947554340] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:03:08,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:03:08,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-10-15 00:03:08,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888579906] [2024-10-15 00:03:08,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:03:08,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-15 00:03:08,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:08,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-15 00:03:08,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-10-15 00:03:08,725 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 79 [2024-10-15 00:03:08,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 96 transitions, 341 flow. Second operand has 15 states, 15 states have (on average 30.6) internal successors, (459), 15 states have internal predecessors, (459), 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) [2024-10-15 00:03:08,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:08,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 79 [2024-10-15 00:03:08,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:09,412 INFO L124 PetriNetUnfolderBase]: 4014/7384 cut-off events. [2024-10-15 00:03:09,413 INFO L125 PetriNetUnfolderBase]: For 2362/2920 co-relation queries the response was YES. [2024-10-15 00:03:09,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16648 conditions, 7384 events. 4014/7384 cut-off events. For 2362/2920 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 52327 event pairs, 2633 based on Foata normal form. 580/6808 useless extension candidates. Maximal degree in co-relation 16632. Up to 3346 conditions per place. [2024-10-15 00:03:09,473 INFO L140 encePairwiseOnDemand]: 70/79 looper letters, 85 selfloop transitions, 38 changer transitions 1/151 dead transitions. [2024-10-15 00:03:09,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 151 transitions, 772 flow [2024-10-15 00:03:09,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-15 00:03:09,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-15 00:03:09,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 344 transitions. [2024-10-15 00:03:09,475 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4838255977496484 [2024-10-15 00:03:09,475 INFO L175 Difference]: Start difference. First operand has 87 places, 96 transitions, 341 flow. Second operand 9 states and 344 transitions. [2024-10-15 00:03:09,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 151 transitions, 772 flow [2024-10-15 00:03:09,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 151 transitions, 767 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-15 00:03:09,482 INFO L231 Difference]: Finished difference. Result has 97 places, 110 transitions, 531 flow [2024-10-15 00:03:09,482 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=531, PETRI_PLACES=97, PETRI_TRANSITIONS=110} [2024-10-15 00:03:09,482 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 19 predicate places. [2024-10-15 00:03:09,483 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 110 transitions, 531 flow [2024-10-15 00:03:09,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 30.6) internal successors, (459), 15 states have internal predecessors, (459), 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) [2024-10-15 00:03:09,483 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:09,484 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:03:09,501 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-15 00:03:09,687 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,SelfDestructingSolverStorable10 [2024-10-15 00:03:09,688 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-10-15 00:03:09,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:09,688 INFO L85 PathProgramCache]: Analyzing trace with hash 973320858, now seen corresponding path program 1 times [2024-10-15 00:03:09,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:09,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634314833] [2024-10-15 00:03:09,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:09,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:09,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:09,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:03:09,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:09,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634314833] [2024-10-15 00:03:09,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634314833] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:03:09,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952376888] [2024-10-15 00:03:09,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:09,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:09,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:03:09,821 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) [2024-10-15 00:03:09,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-15 00:03:09,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:09,909 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-15 00:03:09,910 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:03:09,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-15 00:03:09,940 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 00:03:09,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952376888] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:03:09,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-15 00:03:09,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-10-15 00:03:09,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553919760] [2024-10-15 00:03:09,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:03:09,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-15 00:03:09,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:09,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-15 00:03:09,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-15 00:03:09,942 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 79 [2024-10-15 00:03:09,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 110 transitions, 531 flow. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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) [2024-10-15 00:03:09,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:09,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 79 [2024-10-15 00:03:09,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:10,279 INFO L124 PetriNetUnfolderBase]: 2984/5626 cut-off events. [2024-10-15 00:03:10,279 INFO L125 PetriNetUnfolderBase]: For 2498/2941 co-relation queries the response was YES. [2024-10-15 00:03:10,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12790 conditions, 5626 events. 2984/5626 cut-off events. For 2498/2941 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 39494 event pairs, 2436 based on Foata normal form. 213/5161 useless extension candidates. Maximal degree in co-relation 12770. Up to 4367 conditions per place. [2024-10-15 00:03:10,306 INFO L140 encePairwiseOnDemand]: 76/79 looper letters, 80 selfloop transitions, 1 changer transitions 0/108 dead transitions. [2024-10-15 00:03:10,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 108 transitions, 685 flow [2024-10-15 00:03:10,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-15 00:03:10,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-15 00:03:10,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 134 transitions. [2024-10-15 00:03:10,307 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5654008438818565 [2024-10-15 00:03:10,307 INFO L175 Difference]: Start difference. First operand has 97 places, 110 transitions, 531 flow. Second operand 3 states and 134 transitions. [2024-10-15 00:03:10,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 108 transitions, 685 flow [2024-10-15 00:03:10,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 108 transitions, 683 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-15 00:03:10,313 INFO L231 Difference]: Finished difference. Result has 96 places, 108 transitions, 523 flow [2024-10-15 00:03:10,313 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=523, PETRI_PLACES=96, PETRI_TRANSITIONS=108} [2024-10-15 00:03:10,314 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 18 predicate places. [2024-10-15 00:03:10,314 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 108 transitions, 523 flow [2024-10-15 00:03:10,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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) [2024-10-15 00:03:10,314 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:10,314 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:03:10,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-15 00:03:10,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:10,515 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-10-15 00:03:10,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:10,515 INFO L85 PathProgramCache]: Analyzing trace with hash 973090215, now seen corresponding path program 1 times [2024-10-15 00:03:10,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:10,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959314676] [2024-10-15 00:03:10,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:10,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:10,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:10,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:03:10,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:10,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959314676] [2024-10-15 00:03:10,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959314676] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:03:10,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881029844] [2024-10-15 00:03:10,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:10,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:10,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:03:10,975 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) [2024-10-15 00:03:10,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-15 00:03:11,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:11,062 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-15 00:03:11,064 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:03:11,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-10-15 00:03:11,122 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 23 treesize of output 1 [2024-10-15 00:03:11,207 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-15 00:03:11,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-15 00:03:11,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-10-15 00:03:11,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:11,383 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:03:11,956 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-15 00:03:11,957 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 44 [2024-10-15 00:03:11,972 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-15 00:03:11,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 53 [2024-10-15 00:03:11,985 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-15 00:03:11,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 28 [2024-10-15 00:03:12,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:12,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881029844] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:03:12,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:03:12,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 20 [2024-10-15 00:03:12,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468783365] [2024-10-15 00:03:12,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:03:12,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-15 00:03:12,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:12,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-15 00:03:12,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=380, Unknown=1, NotChecked=0, Total=462 [2024-10-15 00:03:12,289 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 79 [2024-10-15 00:03:12,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 108 transitions, 523 flow. Second operand has 22 states, 22 states have (on average 24.454545454545453) internal successors, (538), 22 states have internal predecessors, (538), 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) [2024-10-15 00:03:12,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:12,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 79 [2024-10-15 00:03:12,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:14,370 INFO L124 PetriNetUnfolderBase]: 4053/7003 cut-off events. [2024-10-15 00:03:14,370 INFO L125 PetriNetUnfolderBase]: For 3051/3683 co-relation queries the response was YES. [2024-10-15 00:03:14,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16231 conditions, 7003 events. 4053/7003 cut-off events. For 3051/3683 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 46366 event pairs, 1268 based on Foata normal form. 329/6447 useless extension candidates. Maximal degree in co-relation 16210. Up to 1833 conditions per place. [2024-10-15 00:03:14,408 INFO L140 encePairwiseOnDemand]: 65/79 looper letters, 179 selfloop transitions, 51 changer transitions 1/251 dead transitions. [2024-10-15 00:03:14,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 251 transitions, 1413 flow [2024-10-15 00:03:14,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-15 00:03:14,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-15 00:03:14,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 658 transitions. [2024-10-15 00:03:14,411 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39662447257383965 [2024-10-15 00:03:14,411 INFO L175 Difference]: Start difference. First operand has 96 places, 108 transitions, 523 flow. Second operand 21 states and 658 transitions. [2024-10-15 00:03:14,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 251 transitions, 1413 flow [2024-10-15 00:03:14,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 251 transitions, 1412 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-15 00:03:14,420 INFO L231 Difference]: Finished difference. Result has 122 places, 127 transitions, 787 flow [2024-10-15 00:03:14,420 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=787, PETRI_PLACES=122, PETRI_TRANSITIONS=127} [2024-10-15 00:03:14,421 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 44 predicate places. [2024-10-15 00:03:14,421 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 127 transitions, 787 flow [2024-10-15 00:03:14,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 24.454545454545453) internal successors, (538), 22 states have internal predecessors, (538), 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) [2024-10-15 00:03:14,421 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:14,422 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:03:14,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-15 00:03:14,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:14,626 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-10-15 00:03:14,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:14,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1332250512, now seen corresponding path program 1 times [2024-10-15 00:03:14,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:14,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924319511] [2024-10-15 00:03:14,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:14,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:14,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:14,981 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:03:14,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:14,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924319511] [2024-10-15 00:03:14,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924319511] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:03:14,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76654708] [2024-10-15 00:03:14,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:14,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:14,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:03:14,984 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) [2024-10-15 00:03:14,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-15 00:03:15,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:15,073 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-15 00:03:15,075 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:03:15,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-10-15 00:03:15,107 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 23 treesize of output 1 [2024-10-15 00:03:15,158 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-15 00:03:15,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-15 00:03:15,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-10-15 00:03:15,304 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:15,305 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:03:15,818 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-15 00:03:15,818 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 42 [2024-10-15 00:03:15,827 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-15 00:03:15,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 49 [2024-10-15 00:03:15,836 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-15 00:03:15,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 26 [2024-10-15 00:03:15,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:15,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76654708] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:03:15,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:03:15,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 20 [2024-10-15 00:03:15,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546461009] [2024-10-15 00:03:15,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:03:15,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-15 00:03:15,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:15,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-15 00:03:15,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=368, Unknown=3, NotChecked=0, Total=462 [2024-10-15 00:03:16,125 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 79 [2024-10-15 00:03:16,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 127 transitions, 787 flow. Second operand has 22 states, 22 states have (on average 24.318181818181817) internal successors, (535), 22 states have internal predecessors, (535), 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) [2024-10-15 00:03:16,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:16,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 79 [2024-10-15 00:03:16,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:20,564 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-15 00:03:21,795 INFO L124 PetriNetUnfolderBase]: 4497/7743 cut-off events. [2024-10-15 00:03:21,795 INFO L125 PetriNetUnfolderBase]: For 6723/7375 co-relation queries the response was YES. [2024-10-15 00:03:21,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20216 conditions, 7743 events. 4497/7743 cut-off events. For 6723/7375 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 51582 event pairs, 1242 based on Foata normal form. 362/7529 useless extension candidates. Maximal degree in co-relation 20187. Up to 1804 conditions per place. [2024-10-15 00:03:21,840 INFO L140 encePairwiseOnDemand]: 65/79 looper letters, 196 selfloop transitions, 59 changer transitions 2/277 dead transitions. [2024-10-15 00:03:21,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 277 transitions, 1791 flow [2024-10-15 00:03:21,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-15 00:03:21,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-15 00:03:21,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 700 transitions. [2024-10-15 00:03:21,843 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40276179516685845 [2024-10-15 00:03:21,843 INFO L175 Difference]: Start difference. First operand has 122 places, 127 transitions, 787 flow. Second operand 22 states and 700 transitions. [2024-10-15 00:03:21,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 277 transitions, 1791 flow [2024-10-15 00:03:21,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 277 transitions, 1772 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-10-15 00:03:21,865 INFO L231 Difference]: Finished difference. Result has 147 places, 139 transitions, 1064 flow [2024-10-15 00:03:21,866 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=761, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1064, PETRI_PLACES=147, PETRI_TRANSITIONS=139} [2024-10-15 00:03:21,866 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 69 predicate places. [2024-10-15 00:03:21,866 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 139 transitions, 1064 flow [2024-10-15 00:03:21,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 24.318181818181817) internal successors, (535), 22 states have internal predecessors, (535), 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) [2024-10-15 00:03:21,867 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:21,867 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] [2024-10-15 00:03:21,879 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-15 00:03:22,067 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,SelfDestructingSolverStorable13 [2024-10-15 00:03:22,068 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-10-15 00:03:22,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:22,068 INFO L85 PathProgramCache]: Analyzing trace with hash 101026568, now seen corresponding path program 1 times [2024-10-15 00:03:22,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:22,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414794387] [2024-10-15 00:03:22,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:22,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:22,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:22,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-15 00:03:22,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:22,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414794387] [2024-10-15 00:03:22,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414794387] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:03:22,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:03:22,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 00:03:22,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985879375] [2024-10-15 00:03:22,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:03:22,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:03:22,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:22,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:03:22,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:03:22,167 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 79 [2024-10-15 00:03:22,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 139 transitions, 1064 flow. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:22,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:22,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 79 [2024-10-15 00:03:22,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:22,784 INFO L124 PetriNetUnfolderBase]: 4101/7032 cut-off events. [2024-10-15 00:03:22,785 INFO L125 PetriNetUnfolderBase]: For 10645/11314 co-relation queries the response was YES. [2024-10-15 00:03:22,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20403 conditions, 7032 events. 4101/7032 cut-off events. For 10645/11314 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 46615 event pairs, 1397 based on Foata normal form. 409/7069 useless extension candidates. Maximal degree in co-relation 20366. Up to 2700 conditions per place. [2024-10-15 00:03:22,830 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 135 selfloop transitions, 8 changer transitions 0/168 dead transitions. [2024-10-15 00:03:22,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 168 transitions, 1460 flow [2024-10-15 00:03:22,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:03:22,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:03:22,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 186 transitions. [2024-10-15 00:03:22,832 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5886075949367089 [2024-10-15 00:03:22,832 INFO L175 Difference]: Start difference. First operand has 147 places, 139 transitions, 1064 flow. Second operand 4 states and 186 transitions. [2024-10-15 00:03:22,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 168 transitions, 1460 flow [2024-10-15 00:03:22,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 168 transitions, 1375 flow, removed 14 selfloop flow, removed 11 redundant places. [2024-10-15 00:03:22,872 INFO L231 Difference]: Finished difference. Result has 141 places, 141 transitions, 1030 flow [2024-10-15 00:03:22,872 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=983, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1030, PETRI_PLACES=141, PETRI_TRANSITIONS=141} [2024-10-15 00:03:22,873 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 63 predicate places. [2024-10-15 00:03:22,873 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 141 transitions, 1030 flow [2024-10-15 00:03:22,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:22,873 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:22,873 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:03:22,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-15 00:03:22,874 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-10-15 00:03:22,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:22,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1963773983, now seen corresponding path program 2 times [2024-10-15 00:03:22,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:22,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19331386] [2024-10-15 00:03:22,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:22,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:22,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:22,983 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-15 00:03:22,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:22,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19331386] [2024-10-15 00:03:22,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19331386] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:03:22,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273147912] [2024-10-15 00:03:22,983 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 00:03:22,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:22,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:03:22,986 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) [2024-10-15 00:03:22,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-15 00:03:23,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 00:03:23,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 00:03:23,068 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-15 00:03:23,069 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:03:23,106 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-15 00:03:23,106 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 00:03:23,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273147912] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:03:23,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-15 00:03:23,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-10-15 00:03:23,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746057880] [2024-10-15 00:03:23,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:03:23,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-15 00:03:23,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:23,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 00:03:23,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-15 00:03:23,114 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 79 [2024-10-15 00:03:23,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 141 transitions, 1030 flow. Second operand has 5 states, 5 states have (on average 31.8) internal successors, (159), 5 states have internal predecessors, (159), 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) [2024-10-15 00:03:23,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:23,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 79 [2024-10-15 00:03:23,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:24,098 INFO L124 PetriNetUnfolderBase]: 5207/8990 cut-off events. [2024-10-15 00:03:24,098 INFO L125 PetriNetUnfolderBase]: For 17244/17282 co-relation queries the response was YES. [2024-10-15 00:03:24,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27283 conditions, 8990 events. 5207/8990 cut-off events. For 17244/17282 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 60847 event pairs, 1721 based on Foata normal form. 176/8808 useless extension candidates. Maximal degree in co-relation 27246. Up to 2923 conditions per place. [2024-10-15 00:03:24,158 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 159 selfloop transitions, 7 changer transitions 0/190 dead transitions. [2024-10-15 00:03:24,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 190 transitions, 1696 flow [2024-10-15 00:03:24,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:03:24,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:03:24,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 185 transitions. [2024-10-15 00:03:24,160 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5854430379746836 [2024-10-15 00:03:24,160 INFO L175 Difference]: Start difference. First operand has 141 places, 141 transitions, 1030 flow. Second operand 4 states and 185 transitions. [2024-10-15 00:03:24,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 190 transitions, 1696 flow [2024-10-15 00:03:24,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 190 transitions, 1681 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-15 00:03:24,195 INFO L231 Difference]: Finished difference. Result has 141 places, 140 transitions, 1033 flow [2024-10-15 00:03:24,195 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1019, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1033, PETRI_PLACES=141, PETRI_TRANSITIONS=140} [2024-10-15 00:03:24,196 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 63 predicate places. [2024-10-15 00:03:24,196 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 140 transitions, 1033 flow [2024-10-15 00:03:24,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.8) internal successors, (159), 5 states have internal predecessors, (159), 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) [2024-10-15 00:03:24,196 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:24,197 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:03:24,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-15 00:03:24,397 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,SelfDestructingSolverStorable15 [2024-10-15 00:03:24,397 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-10-15 00:03:24,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:24,398 INFO L85 PathProgramCache]: Analyzing trace with hash -747450461, now seen corresponding path program 1 times [2024-10-15 00:03:24,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:24,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625788385] [2024-10-15 00:03:24,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:24,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:24,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:24,473 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-15 00:03:24,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:24,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625788385] [2024-10-15 00:03:24,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625788385] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:03:24,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009863416] [2024-10-15 00:03:24,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:24,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:24,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:03:24,476 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) [2024-10-15 00:03:24,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-15 00:03:24,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:24,567 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-15 00:03:24,568 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:03:24,598 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-15 00:03:24,599 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:03:24,643 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-15 00:03:24,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009863416] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:03:24,643 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:03:24,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-15 00:03:24,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893924445] [2024-10-15 00:03:24,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:03:24,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-15 00:03:24,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:24,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-15 00:03:24,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-15 00:03:24,670 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 79 [2024-10-15 00:03:24,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 140 transitions, 1033 flow. Second operand has 12 states, 12 states have (on average 32.0) internal successors, (384), 12 states have internal predecessors, (384), 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) [2024-10-15 00:03:24,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:24,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 79 [2024-10-15 00:03:24,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:26,456 INFO L124 PetriNetUnfolderBase]: 8150/14507 cut-off events. [2024-10-15 00:03:26,456 INFO L125 PetriNetUnfolderBase]: For 31122/31256 co-relation queries the response was YES. [2024-10-15 00:03:26,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45773 conditions, 14507 events. 8150/14507 cut-off events. For 31122/31256 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 104468 event pairs, 2521 based on Foata normal form. 528/14867 useless extension candidates. Maximal degree in co-relation 45737. Up to 5670 conditions per place. [2024-10-15 00:03:26,551 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 304 selfloop transitions, 13 changer transitions 0/342 dead transitions. [2024-10-15 00:03:26,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 342 transitions, 2969 flow [2024-10-15 00:03:26,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-15 00:03:26,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-15 00:03:26,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 482 transitions. [2024-10-15 00:03:26,553 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.610126582278481 [2024-10-15 00:03:26,553 INFO L175 Difference]: Start difference. First operand has 141 places, 140 transitions, 1033 flow. Second operand 10 states and 482 transitions. [2024-10-15 00:03:26,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 342 transitions, 2969 flow [2024-10-15 00:03:26,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 342 transitions, 2937 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-15 00:03:26,610 INFO L231 Difference]: Finished difference. Result has 150 places, 149 transitions, 1099 flow [2024-10-15 00:03:26,611 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1019, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1099, PETRI_PLACES=150, PETRI_TRANSITIONS=149} [2024-10-15 00:03:26,611 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 72 predicate places. [2024-10-15 00:03:26,611 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 149 transitions, 1099 flow [2024-10-15 00:03:26,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 32.0) internal successors, (384), 12 states have internal predecessors, (384), 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) [2024-10-15 00:03:26,612 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:26,612 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, 1] [2024-10-15 00:03:26,626 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-15 00:03:26,812 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,SelfDestructingSolverStorable16 [2024-10-15 00:03:26,812 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-10-15 00:03:26,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:26,813 INFO L85 PathProgramCache]: Analyzing trace with hash 663272358, now seen corresponding path program 1 times [2024-10-15 00:03:26,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:26,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102174810] [2024-10-15 00:03:26,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:26,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:26,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:27,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:03:27,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:27,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102174810] [2024-10-15 00:03:27,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102174810] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:03:27,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923633194] [2024-10-15 00:03:27,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:27,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:27,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:03:27,207 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) [2024-10-15 00:03:27,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-15 00:03:27,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:27,288 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-15 00:03:27,290 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:03:27,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-10-15 00:03:27,329 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 23 treesize of output 1 [2024-10-15 00:03:27,412 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-15 00:03:27,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-15 00:03:27,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-10-15 00:03:27,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:27,563 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:03:27,981 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-15 00:03:27,982 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 44 [2024-10-15 00:03:27,993 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-15 00:03:27,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 58 [2024-10-15 00:03:28,005 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-15 00:03:28,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 36 [2024-10-15 00:03:28,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:28,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923633194] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:03:28,154 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:03:28,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 20 [2024-10-15 00:03:28,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183311087] [2024-10-15 00:03:28,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:03:28,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-15 00:03:28,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:28,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-15 00:03:28,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=372, Unknown=2, NotChecked=0, Total=462 [2024-10-15 00:03:28,190 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 79 [2024-10-15 00:03:28,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 149 transitions, 1099 flow. Second operand has 22 states, 22 states have (on average 24.727272727272727) internal successors, (544), 22 states have internal predecessors, (544), 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) [2024-10-15 00:03:28,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:28,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 79 [2024-10-15 00:03:28,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:32,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-15 00:03:34,748 INFO L124 PetriNetUnfolderBase]: 9113/14741 cut-off events. [2024-10-15 00:03:34,749 INFO L125 PetriNetUnfolderBase]: For 27313/27996 co-relation queries the response was YES. [2024-10-15 00:03:34,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46219 conditions, 14741 events. 9113/14741 cut-off events. For 27313/27996 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 99304 event pairs, 5764 based on Foata normal form. 95/14301 useless extension candidates. Maximal degree in co-relation 46180. Up to 10556 conditions per place. [2024-10-15 00:03:34,985 INFO L140 encePairwiseOnDemand]: 66/79 looper letters, 195 selfloop transitions, 55 changer transitions 3/275 dead transitions. [2024-10-15 00:03:34,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 275 transitions, 2046 flow [2024-10-15 00:03:34,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-15 00:03:34,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-10-15 00:03:34,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 636 transitions. [2024-10-15 00:03:34,987 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40253164556962023 [2024-10-15 00:03:34,987 INFO L175 Difference]: Start difference. First operand has 150 places, 149 transitions, 1099 flow. Second operand 20 states and 636 transitions. [2024-10-15 00:03:34,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 275 transitions, 2046 flow [2024-10-15 00:03:35,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 275 transitions, 1980 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-10-15 00:03:35,017 INFO L231 Difference]: Finished difference. Result has 170 places, 152 transitions, 1218 flow [2024-10-15 00:03:35,017 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1069, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1218, PETRI_PLACES=170, PETRI_TRANSITIONS=152} [2024-10-15 00:03:35,018 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 92 predicate places. [2024-10-15 00:03:35,018 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 152 transitions, 1218 flow [2024-10-15 00:03:35,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 24.727272727272727) internal successors, (544), 22 states have internal predecessors, (544), 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) [2024-10-15 00:03:35,018 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:35,019 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:03:35,030 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-15 00:03:35,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-15 00:03:35,219 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-10-15 00:03:35,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:35,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1764954553, now seen corresponding path program 1 times [2024-10-15 00:03:35,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:35,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662747316] [2024-10-15 00:03:35,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:35,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:35,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:35,811 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:03:35,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:35,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662747316] [2024-10-15 00:03:35,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662747316] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:03:35,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994219265] [2024-10-15 00:03:35,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:35,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:35,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:03:35,814 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:03:35,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-15 00:03:35,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:35,911 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-15 00:03:35,914 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:03:36,014 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-15 00:03:36,015 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:03:36,064 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-15 00:03:36,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 13 [2024-10-15 00:03:36,088 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-15 00:03:36,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994219265] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-15 00:03:36,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-15 00:03:36,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8, 5] total 15 [2024-10-15 00:03:36,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534989067] [2024-10-15 00:03:36,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:03:36,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-15 00:03:36,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:36,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 00:03:36,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2024-10-15 00:03:36,108 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 79 [2024-10-15 00:03:36,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 152 transitions, 1218 flow. Second operand has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 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) [2024-10-15 00:03:36,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:36,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 79 [2024-10-15 00:03:36,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:37,403 INFO L124 PetriNetUnfolderBase]: 6311/11633 cut-off events. [2024-10-15 00:03:37,403 INFO L125 PetriNetUnfolderBase]: For 19825/20209 co-relation queries the response was YES. [2024-10-15 00:03:37,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36151 conditions, 11633 events. 6311/11633 cut-off events. For 19825/20209 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 85303 event pairs, 729 based on Foata normal form. 163/11508 useless extension candidates. Maximal degree in co-relation 36107. Up to 5303 conditions per place. [2024-10-15 00:03:37,472 INFO L140 encePairwiseOnDemand]: 72/79 looper letters, 147 selfloop transitions, 19 changer transitions 0/195 dead transitions. [2024-10-15 00:03:37,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 195 transitions, 1701 flow [2024-10-15 00:03:37,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-15 00:03:37,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-15 00:03:37,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 231 transitions. [2024-10-15 00:03:37,473 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5848101265822785 [2024-10-15 00:03:37,473 INFO L175 Difference]: Start difference. First operand has 170 places, 152 transitions, 1218 flow. Second operand 5 states and 231 transitions. [2024-10-15 00:03:37,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 195 transitions, 1701 flow [2024-10-15 00:03:37,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 195 transitions, 1622 flow, removed 2 selfloop flow, removed 14 redundant places. [2024-10-15 00:03:37,540 INFO L231 Difference]: Finished difference. Result has 161 places, 151 transitions, 1179 flow [2024-10-15 00:03:37,540 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1130, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1179, PETRI_PLACES=161, PETRI_TRANSITIONS=151} [2024-10-15 00:03:37,540 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 83 predicate places. [2024-10-15 00:03:37,541 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 151 transitions, 1179 flow [2024-10-15 00:03:37,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 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) [2024-10-15 00:03:37,541 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:37,541 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:03:37,559 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-15 00:03:37,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:37,742 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-10-15 00:03:37,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:37,743 INFO L85 PathProgramCache]: Analyzing trace with hash -182045178, now seen corresponding path program 1 times [2024-10-15 00:03:37,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:37,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020296662] [2024-10-15 00:03:37,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:37,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:37,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:38,273 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:03:38,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:38,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020296662] [2024-10-15 00:03:38,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020296662] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:03:38,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325406285] [2024-10-15 00:03:38,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:38,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:38,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:03:38,275 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:03:38,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-15 00:03:38,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:38,363 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-15 00:03:38,364 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:03:38,569 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-15 00:03:38,569 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:03:38,602 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-15 00:03:38,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 11 [2024-10-15 00:03:38,623 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-15 00:03:38,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325406285] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-15 00:03:38,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-15 00:03:38,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8, 5] total 15 [2024-10-15 00:03:38,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486479014] [2024-10-15 00:03:38,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:03:38,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-15 00:03:38,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:38,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 00:03:38,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2024-10-15 00:03:38,639 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 79 [2024-10-15 00:03:38,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 151 transitions, 1179 flow. Second operand has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:38,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:38,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 79 [2024-10-15 00:03:38,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:39,804 INFO L124 PetriNetUnfolderBase]: 6112/11119 cut-off events. [2024-10-15 00:03:39,804 INFO L125 PetriNetUnfolderBase]: For 22615/23068 co-relation queries the response was YES. [2024-10-15 00:03:39,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35287 conditions, 11119 events. 6112/11119 cut-off events. For 22615/23068 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 79516 event pairs, 726 based on Foata normal form. 103/10886 useless extension candidates. Maximal degree in co-relation 35241. Up to 4990 conditions per place. [2024-10-15 00:03:39,881 INFO L140 encePairwiseOnDemand]: 72/79 looper letters, 145 selfloop transitions, 19 changer transitions 0/193 dead transitions. [2024-10-15 00:03:39,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 193 transitions, 1643 flow [2024-10-15 00:03:39,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-15 00:03:39,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-15 00:03:39,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 230 transitions. [2024-10-15 00:03:39,882 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5822784810126582 [2024-10-15 00:03:39,883 INFO L175 Difference]: Start difference. First operand has 161 places, 151 transitions, 1179 flow. Second operand 5 states and 230 transitions. [2024-10-15 00:03:39,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 193 transitions, 1643 flow [2024-10-15 00:03:39,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 193 transitions, 1613 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-10-15 00:03:39,952 INFO L231 Difference]: Finished difference. Result has 162 places, 149 transitions, 1163 flow [2024-10-15 00:03:39,952 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1125, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1163, PETRI_PLACES=162, PETRI_TRANSITIONS=149} [2024-10-15 00:03:39,953 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 84 predicate places. [2024-10-15 00:03:39,953 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 149 transitions, 1163 flow [2024-10-15 00:03:39,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:39,953 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:39,953 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:03:39,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-15 00:03:40,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2024-10-15 00:03:40,154 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-10-15 00:03:40,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:40,155 INFO L85 PathProgramCache]: Analyzing trace with hash 318005700, now seen corresponding path program 1 times [2024-10-15 00:03:40,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:40,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703971421] [2024-10-15 00:03:40,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:40,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:40,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:41,030 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:41,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:41,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703971421] [2024-10-15 00:03:41,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703971421] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:03:41,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522586073] [2024-10-15 00:03:41,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:41,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:41,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:03:41,034 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:03:41,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-15 00:03:41,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:41,135 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-15 00:03:41,137 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:03:41,320 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-15 00:03:41,320 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:03:41,380 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-15 00:03:41,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2024-10-15 00:03:41,462 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-15 00:03:41,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522586073] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-15 00:03:41,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-15 00:03:41,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10, 5] total 18 [2024-10-15 00:03:41,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747327093] [2024-10-15 00:03:41,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:03:41,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-15 00:03:41,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:41,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 00:03:41,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2024-10-15 00:03:41,477 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 79 [2024-10-15 00:03:41,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 149 transitions, 1163 flow. Second operand has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 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) [2024-10-15 00:03:41,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:41,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 79 [2024-10-15 00:03:41,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:42,693 INFO L124 PetriNetUnfolderBase]: 6784/11864 cut-off events. [2024-10-15 00:03:42,693 INFO L125 PetriNetUnfolderBase]: For 25617/25967 co-relation queries the response was YES. [2024-10-15 00:03:42,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37687 conditions, 11864 events. 6784/11864 cut-off events. For 25617/25967 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 82479 event pairs, 357 based on Foata normal form. 150/11870 useless extension candidates. Maximal degree in co-relation 37641. Up to 4688 conditions per place. [2024-10-15 00:03:42,766 INFO L140 encePairwiseOnDemand]: 72/79 looper letters, 146 selfloop transitions, 20 changer transitions 0/193 dead transitions. [2024-10-15 00:03:42,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 193 transitions, 1655 flow [2024-10-15 00:03:42,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-15 00:03:42,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-15 00:03:42,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 223 transitions. [2024-10-15 00:03:42,768 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5645569620253165 [2024-10-15 00:03:42,768 INFO L175 Difference]: Start difference. First operand has 162 places, 149 transitions, 1163 flow. Second operand 5 states and 223 transitions. [2024-10-15 00:03:42,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 193 transitions, 1655 flow [2024-10-15 00:03:42,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 193 transitions, 1610 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-15 00:03:42,840 INFO L231 Difference]: Finished difference. Result has 162 places, 149 transitions, 1170 flow [2024-10-15 00:03:42,840 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1118, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1170, PETRI_PLACES=162, PETRI_TRANSITIONS=149} [2024-10-15 00:03:42,841 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 84 predicate places. [2024-10-15 00:03:42,841 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 149 transitions, 1170 flow [2024-10-15 00:03:42,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 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) [2024-10-15 00:03:42,842 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:42,843 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, 1, 1, 1, 1, 1] [2024-10-15 00:03:42,862 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-15 00:03:43,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:43,047 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-10-15 00:03:43,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:43,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1830325998, now seen corresponding path program 1 times [2024-10-15 00:03:43,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:43,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478146715] [2024-10-15 00:03:43,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:43,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:43,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:43,438 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:03:43,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:43,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478146715] [2024-10-15 00:03:43,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478146715] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:03:43,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465829438] [2024-10-15 00:03:43,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:43,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:43,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:03:43,441 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:03:43,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-15 00:03:43,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:43,539 INFO L255 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-15 00:03:43,542 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:03:43,606 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 23 treesize of output 1 [2024-10-15 00:03:44,209 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-15 00:03:44,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2024-10-15 00:03:44,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:03:44,228 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:03:44,485 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 21 treesize of output 19 [2024-10-15 00:03:44,490 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 28 treesize of output 22 [2024-10-15 00:03:44,641 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:03:44,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465829438] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:03:44,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:03:44,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2024-10-15 00:03:44,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060780497] [2024-10-15 00:03:44,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:03:44,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-15 00:03:44,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:44,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-15 00:03:44,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2024-10-15 00:03:45,265 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 79 [2024-10-15 00:03:45,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 149 transitions, 1170 flow. Second operand has 23 states, 23 states have (on average 23.73913043478261) internal successors, (546), 23 states have internal predecessors, (546), 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) [2024-10-15 00:03:45,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:45,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 79 [2024-10-15 00:03:45,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:50,833 INFO L124 PetriNetUnfolderBase]: 17337/28122 cut-off events. [2024-10-15 00:03:50,833 INFO L125 PetriNetUnfolderBase]: For 77109/78682 co-relation queries the response was YES. [2024-10-15 00:03:50,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94023 conditions, 28122 events. 17337/28122 cut-off events. For 77109/78682 co-relation queries the response was YES. Maximal size of possible extension queue 736. Compared 210187 event pairs, 3476 based on Foata normal form. 50/27096 useless extension candidates. Maximal degree in co-relation 93977. Up to 3818 conditions per place. [2024-10-15 00:03:51,045 INFO L140 encePairwiseOnDemand]: 65/79 looper letters, 390 selfloop transitions, 77 changer transitions 9/499 dead transitions. [2024-10-15 00:03:51,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 499 transitions, 4011 flow [2024-10-15 00:03:51,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-15 00:03:51,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-10-15 00:03:51,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 827 transitions. [2024-10-15 00:03:51,048 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4026290165530672 [2024-10-15 00:03:51,048 INFO L175 Difference]: Start difference. First operand has 162 places, 149 transitions, 1170 flow. Second operand 26 states and 827 transitions. [2024-10-15 00:03:51,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 499 transitions, 4011 flow [2024-10-15 00:03:51,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 499 transitions, 3920 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-10-15 00:03:51,208 INFO L231 Difference]: Finished difference. Result has 191 places, 169 transitions, 1498 flow [2024-10-15 00:03:51,209 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1131, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1498, PETRI_PLACES=191, PETRI_TRANSITIONS=169} [2024-10-15 00:03:51,209 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 113 predicate places. [2024-10-15 00:03:51,209 INFO L471 AbstractCegarLoop]: Abstraction has has 191 places, 169 transitions, 1498 flow [2024-10-15 00:03:51,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 23.73913043478261) internal successors, (546), 23 states have internal predecessors, (546), 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) [2024-10-15 00:03:51,210 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:51,210 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, 1, 1, 1, 1, 1, 1] [2024-10-15 00:03:51,224 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-15 00:03:51,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:51,411 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-10-15 00:03:51,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:51,411 INFO L85 PathProgramCache]: Analyzing trace with hash 604278011, now seen corresponding path program 1 times [2024-10-15 00:03:51,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:51,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23745604] [2024-10-15 00:03:51,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:51,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:51,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:51,809 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:03:51,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:51,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23745604] [2024-10-15 00:03:51,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23745604] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:03:51,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973433170] [2024-10-15 00:03:51,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:51,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:51,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:03:51,812 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:03:51,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-15 00:03:51,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:51,911 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-15 00:03:51,913 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:03:51,975 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 23 treesize of output 1 [2024-10-15 00:03:52,363 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-15 00:03:52,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-10-15 00:03:52,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:03:52,392 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:03:52,653 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 20 treesize of output 18 [2024-10-15 00:03:52,656 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 26 treesize of output 20 [2024-10-15 00:03:52,802 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:03:52,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973433170] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:03:52,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:03:52,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2024-10-15 00:03:52,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609959572] [2024-10-15 00:03:52,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:03:52,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-15 00:03:52,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:52,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-15 00:03:52,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2024-10-15 00:03:53,535 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 79 [2024-10-15 00:03:53,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 169 transitions, 1498 flow. Second operand has 23 states, 23 states have (on average 24.608695652173914) internal successors, (566), 23 states have internal predecessors, (566), 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) [2024-10-15 00:03:53,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:53,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 79 [2024-10-15 00:03:53,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:57,929 INFO L124 PetriNetUnfolderBase]: 14010/23730 cut-off events. [2024-10-15 00:03:57,929 INFO L125 PetriNetUnfolderBase]: For 75028/76531 co-relation queries the response was YES. [2024-10-15 00:03:58,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84380 conditions, 23730 events. 14010/23730 cut-off events. For 75028/76531 co-relation queries the response was YES. Maximal size of possible extension queue 622. Compared 181360 event pairs, 3476 based on Foata normal form. 589/24150 useless extension candidates. Maximal degree in co-relation 84326. Up to 3289 conditions per place. [2024-10-15 00:03:58,162 INFO L140 encePairwiseOnDemand]: 67/79 looper letters, 295 selfloop transitions, 72 changer transitions 9/401 dead transitions. [2024-10-15 00:03:58,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 401 transitions, 3555 flow [2024-10-15 00:03:58,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-15 00:03:58,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-15 00:03:58,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 664 transitions. [2024-10-15 00:03:58,165 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4002411091018686 [2024-10-15 00:03:58,165 INFO L175 Difference]: Start difference. First operand has 191 places, 169 transitions, 1498 flow. Second operand 21 states and 664 transitions. [2024-10-15 00:03:58,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 401 transitions, 3555 flow [2024-10-15 00:03:58,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 401 transitions, 3438 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-10-15 00:03:58,370 INFO L231 Difference]: Finished difference. Result has 202 places, 169 transitions, 1534 flow [2024-10-15 00:03:58,370 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1381, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1534, PETRI_PLACES=202, PETRI_TRANSITIONS=169} [2024-10-15 00:03:58,371 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 124 predicate places. [2024-10-15 00:03:58,371 INFO L471 AbstractCegarLoop]: Abstraction has has 202 places, 169 transitions, 1534 flow [2024-10-15 00:03:58,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 24.608695652173914) internal successors, (566), 23 states have internal predecessors, (566), 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) [2024-10-15 00:03:58,371 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:58,371 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:03:58,386 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-10-15 00:03:58,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-10-15 00:03:58,572 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-10-15 00:03:58,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:58,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1228211200, now seen corresponding path program 1 times [2024-10-15 00:03:58,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:58,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508670296] [2024-10-15 00:03:58,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:58,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:58,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:58,652 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-15 00:03:58,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:58,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508670296] [2024-10-15 00:03:58,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508670296] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:03:58,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:03:58,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-15 00:03:58,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563112583] [2024-10-15 00:03:58,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:03:58,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-15 00:03:58,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:58,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 00:03:58,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-15 00:03:58,654 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 79 [2024-10-15 00:03:58,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 169 transitions, 1534 flow. Second operand has 5 states, 5 states have (on average 36.6) internal successors, (183), 5 states have internal predecessors, (183), 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) [2024-10-15 00:03:58,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:58,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 79 [2024-10-15 00:03:58,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:04:04,231 INFO L124 PetriNetUnfolderBase]: 20747/39043 cut-off events. [2024-10-15 00:04:04,231 INFO L125 PetriNetUnfolderBase]: For 135160/136300 co-relation queries the response was YES. [2024-10-15 00:04:04,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136395 conditions, 39043 events. 20747/39043 cut-off events. For 135160/136300 co-relation queries the response was YES. Maximal size of possible extension queue 892. Compared 339810 event pairs, 4701 based on Foata normal form. 363/38913 useless extension candidates. Maximal degree in co-relation 136341. Up to 12864 conditions per place. [2024-10-15 00:04:04,950 INFO L140 encePairwiseOnDemand]: 75/79 looper letters, 217 selfloop transitions, 21 changer transitions 0/270 dead transitions. [2024-10-15 00:04:04,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 270 transitions, 2801 flow [2024-10-15 00:04:05,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:04:05,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:04:05,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 213 transitions. [2024-10-15 00:04:05,209 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6740506329113924 [2024-10-15 00:04:05,209 INFO L175 Difference]: Start difference. First operand has 202 places, 169 transitions, 1534 flow. Second operand 4 states and 213 transitions. [2024-10-15 00:04:05,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 270 transitions, 2801 flow [2024-10-15 00:04:05,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 270 transitions, 2585 flow, removed 3 selfloop flow, removed 20 redundant places. [2024-10-15 00:04:05,730 INFO L231 Difference]: Finished difference. Result has 187 places, 176 transitions, 1537 flow [2024-10-15 00:04:05,730 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1384, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1537, PETRI_PLACES=187, PETRI_TRANSITIONS=176} [2024-10-15 00:04:05,731 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 109 predicate places. [2024-10-15 00:04:05,731 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 176 transitions, 1537 flow [2024-10-15 00:04:05,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.6) internal successors, (183), 5 states have internal predecessors, (183), 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) [2024-10-15 00:04:05,731 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:04:05,731 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:04:05,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-15 00:04:05,731 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-10-15 00:04:05,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:04:05,732 INFO L85 PathProgramCache]: Analyzing trace with hash 177544983, now seen corresponding path program 1 times [2024-10-15 00:04:05,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:04:05,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6297336] [2024-10-15 00:04:05,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:05,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:04:05,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:05,865 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:04:05,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:04:05,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6297336] [2024-10-15 00:04:05,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6297336] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:04:05,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78674788] [2024-10-15 00:04:05,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:05,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:04:05,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:04:05,869 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:04:05,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-15 00:04:05,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:05,985 INFO L255 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-15 00:04:05,986 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:04:06,044 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-15 00:04:06,044 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 00:04:06,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78674788] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:04:06,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-15 00:04:06,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-10-15 00:04:06,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105998166] [2024-10-15 00:04:06,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:04:06,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:04:06,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:04:06,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:04:06,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-15 00:04:06,049 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 79 [2024-10-15 00:04:06,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 176 transitions, 1537 flow. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 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) [2024-10-15 00:04:06,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:04:06,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 79 [2024-10-15 00:04:06,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:04:13,619 INFO L124 PetriNetUnfolderBase]: 29094/53981 cut-off events. [2024-10-15 00:04:13,619 INFO L125 PetriNetUnfolderBase]: For 211576/214513 co-relation queries the response was YES. [2024-10-15 00:04:14,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195399 conditions, 53981 events. 29094/53981 cut-off events. For 211576/214513 co-relation queries the response was YES. Maximal size of possible extension queue 1209. Compared 487292 event pairs, 8734 based on Foata normal form. 424/52768 useless extension candidates. Maximal degree in co-relation 195346. Up to 15212 conditions per place. [2024-10-15 00:04:14,555 INFO L140 encePairwiseOnDemand]: 76/79 looper letters, 194 selfloop transitions, 19 changer transitions 5/249 dead transitions. [2024-10-15 00:04:14,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 249 transitions, 2479 flow [2024-10-15 00:04:14,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:04:14,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:04:14,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 207 transitions. [2024-10-15 00:04:14,556 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6550632911392406 [2024-10-15 00:04:14,556 INFO L175 Difference]: Start difference. First operand has 187 places, 176 transitions, 1537 flow. Second operand 4 states and 207 transitions. [2024-10-15 00:04:14,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 249 transitions, 2479 flow