./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more-array-sum2.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 6d47c8696b49948f6f8f53dd9eda6f4e0281717fd9a29e264a19ded5493fa577 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 14:07:18,560 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 14:07:18,633 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 14:07:18,638 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 14:07:18,640 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 14:07:18,660 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 14:07:18,661 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 14:07:18,662 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 14:07:18,662 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 14:07:18,665 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 14:07:18,665 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 14:07:18,665 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 14:07:18,666 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 14:07:18,666 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 14:07:18,667 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 14:07:18,667 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 14:07:18,667 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 14:07:18,667 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 14:07:18,668 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 14:07:18,668 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 14:07:18,668 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 14:07:18,668 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 14:07:18,669 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 14:07:18,669 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 14:07:18,670 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 14:07:18,670 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 14:07:18,670 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 14:07:18,670 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 14:07:18,670 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 14:07:18,670 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 14:07:18,671 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 14:07:18,671 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 14:07:18,671 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 14:07:18,671 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 14:07:18,671 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:07:18,672 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 14:07:18,672 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 14:07:18,672 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 14:07:18,672 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 14:07:18,673 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 14:07:18,673 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 14:07:18,673 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 14:07:18,673 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 14:07:18,673 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 14:07:18,673 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d47c8696b49948f6f8f53dd9eda6f4e0281717fd9a29e264a19ded5493fa577 [2024-11-19 14:07:18,880 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 14:07:18,903 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 14:07:18,906 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 14:07:18,907 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 14:07:18,907 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 14:07:18,908 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c [2024-11-19 14:07:20,126 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 14:07:20,288 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 14:07:20,292 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c [2024-11-19 14:07:20,301 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4ae7899d/2657df53357e4452ba36531f4514ac1b/FLAGbc463a388 [2024-11-19 14:07:20,688 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4ae7899d/2657df53357e4452ba36531f4514ac1b [2024-11-19 14:07:20,690 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 14:07:20,691 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 14:07:20,692 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 14:07:20,692 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 14:07:20,697 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 14:07:20,698 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:07:20" (1/1) ... [2024-11-19 14:07:20,699 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5774e640 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:20, skipping insertion in model container [2024-11-19 14:07:20,700 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:07:20" (1/1) ... [2024-11-19 14:07:20,721 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 14:07:20,949 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:07:20,960 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 14:07:20,987 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:07:21,005 INFO L204 MainTranslator]: Completed translation [2024-11-19 14:07:21,005 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:21 WrapperNode [2024-11-19 14:07:21,005 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 14:07:21,006 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 14:07:21,006 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 14:07:21,006 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 14:07:21,011 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:21" (1/1) ... [2024-11-19 14:07:21,018 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:21" (1/1) ... [2024-11-19 14:07:21,044 INFO L138 Inliner]: procedures = 24, calls = 38, calls flagged for inlining = 17, calls inlined = 29, statements flattened = 360 [2024-11-19 14:07:21,044 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 14:07:21,045 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 14:07:21,045 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 14:07:21,045 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 14:07:21,054 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:21" (1/1) ... [2024-11-19 14:07:21,054 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:21" (1/1) ... [2024-11-19 14:07:21,057 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:21" (1/1) ... [2024-11-19 14:07:21,072 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-19 14:07:21,072 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:21" (1/1) ... [2024-11-19 14:07:21,073 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:21" (1/1) ... [2024-11-19 14:07:21,080 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:21" (1/1) ... [2024-11-19 14:07:21,083 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:21" (1/1) ... [2024-11-19 14:07:21,085 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:21" (1/1) ... [2024-11-19 14:07:21,086 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:21" (1/1) ... [2024-11-19 14:07:21,088 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 14:07:21,089 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 14:07:21,089 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 14:07:21,089 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 14:07:21,090 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:21" (1/1) ... [2024-11-19 14:07:21,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:07:21,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:07:21,123 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 14:07:21,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 14:07:21,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 14:07:21,160 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 14:07:21,160 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 14:07:21,160 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 14:07:21,160 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 14:07:21,160 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-19 14:07:21,160 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-19 14:07:21,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 14:07:21,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 14:07:21,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 14:07:21,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 14:07:21,161 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-19 14:07:21,161 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-19 14:07:21,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 14:07:21,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 14:07:21,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 14:07:21,162 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 14:07:21,162 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 14:07:21,163 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 14:07:21,292 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 14:07:21,294 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 14:07:21,799 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 14:07:21,799 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 14:07:22,433 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 14:07:22,434 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-19 14:07:22,434 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:07:22 BoogieIcfgContainer [2024-11-19 14:07:22,434 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 14:07:22,436 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 14:07:22,437 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 14:07:22,440 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 14:07:22,440 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:07:20" (1/3) ... [2024-11-19 14:07:22,441 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39124cca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:07:22, skipping insertion in model container [2024-11-19 14:07:22,441 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:21" (2/3) ... [2024-11-19 14:07:22,441 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39124cca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:07:22, skipping insertion in model container [2024-11-19 14:07:22,441 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:07:22" (3/3) ... [2024-11-19 14:07:22,442 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum2.wvr.c [2024-11-19 14:07:22,459 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 14:07:22,459 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2024-11-19 14:07:22,459 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 14:07:22,691 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-19 14:07:22,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 89 transitions, 199 flow [2024-11-19 14:07:22,764 INFO L124 PetriNetUnfolderBase]: 5/86 cut-off events. [2024-11-19 14:07:22,764 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-19 14:07:22,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 86 events. 5/86 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 344 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2024-11-19 14:07:22,769 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 89 transitions, 199 flow [2024-11-19 14:07:22,772 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 84 transitions, 183 flow [2024-11-19 14:07:22,783 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 14:07:22,789 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;@53c06bb6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 14:07:22,789 INFO L334 AbstractCegarLoop]: Starting to check reachability of 91 error locations. [2024-11-19 14:07:22,792 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 14:07:22,792 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-19 14:07:22,793 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 14:07:22,793 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:22,793 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 14:07:22,794 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-19 14:07:22,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:22,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1361995, now seen corresponding path program 1 times [2024-11-19 14:07:22,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:22,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590333062] [2024-11-19 14:07:22,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:22,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:22,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:23,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:23,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:23,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590333062] [2024-11-19 14:07:23,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590333062] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:07:23,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:07:23,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:07:23,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602371900] [2024-11-19 14:07:23,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:07:23,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:07:23,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:23,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:07:23,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:07:23,070 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 89 [2024-11-19 14:07:23,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 84 transitions, 183 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:23,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:23,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 89 [2024-11-19 14:07:23,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:24,625 INFO L124 PetriNetUnfolderBase]: 5635/8587 cut-off events. [2024-11-19 14:07:24,625 INFO L125 PetriNetUnfolderBase]: For 221/221 co-relation queries the response was YES. [2024-11-19 14:07:24,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16902 conditions, 8587 events. 5635/8587 cut-off events. For 221/221 co-relation queries the response was YES. Maximal size of possible extension queue 1067. Compared 61148 event pairs, 4968 based on Foata normal form. 2/4231 useless extension candidates. Maximal degree in co-relation 16105. Up to 7974 conditions per place. [2024-11-19 14:07:24,677 INFO L140 encePairwiseOnDemand]: 60/89 looper letters, 48 selfloop transitions, 7 changer transitions 0/72 dead transitions. [2024-11-19 14:07:24,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 72 transitions, 269 flow [2024-11-19 14:07:24,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:07:24,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:07:24,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 157 transitions. [2024-11-19 14:07:24,689 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4410112359550562 [2024-11-19 14:07:24,690 INFO L175 Difference]: Start difference. First operand has 89 places, 84 transitions, 183 flow. Second operand 4 states and 157 transitions. [2024-11-19 14:07:24,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 72 transitions, 269 flow [2024-11-19 14:07:24,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 72 transitions, 260 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-19 14:07:24,724 INFO L231 Difference]: Finished difference. Result has 72 places, 72 transitions, 198 flow [2024-11-19 14:07:24,726 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=198, PETRI_PLACES=72, PETRI_TRANSITIONS=72} [2024-11-19 14:07:24,729 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, -17 predicate places. [2024-11-19 14:07:24,730 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 72 transitions, 198 flow [2024-11-19 14:07:24,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:24,730 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:24,730 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-19 14:07:24,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 14:07:24,731 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-19 14:07:24,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:24,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1921820546, now seen corresponding path program 1 times [2024-11-19 14:07:24,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:24,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573593830] [2024-11-19 14:07:24,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:24,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:24,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:24,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:24,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:24,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573593830] [2024-11-19 14:07:24,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573593830] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:07:24,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096015118] [2024-11-19 14:07:24,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:24,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:24,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:07:24,867 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:07:24,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 14:07:24,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:24,995 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:07:24,998 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:07:25,037 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:25,038 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:07:25,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096015118] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:07:25,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:07:25,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-19 14:07:25,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793126176] [2024-11-19 14:07:25,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:07:25,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 14:07:25,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:25,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 14:07:25,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 14:07:25,061 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 89 [2024-11-19 14:07:25,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 72 transitions, 198 flow. Second operand has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:25,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:25,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 89 [2024-11-19 14:07:25,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:26,341 INFO L124 PetriNetUnfolderBase]: 5635/8585 cut-off events. [2024-11-19 14:07:26,341 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-19 14:07:26,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16799 conditions, 8585 events. 5635/8585 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 1067. Compared 61148 event pairs, 4968 based on Foata normal form. 2/4232 useless extension candidates. Maximal degree in co-relation 16749. Up to 7964 conditions per place. [2024-11-19 14:07:26,396 INFO L140 encePairwiseOnDemand]: 80/89 looper letters, 41 selfloop transitions, 12 changer transitions 0/70 dead transitions. [2024-11-19 14:07:26,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 70 transitions, 296 flow [2024-11-19 14:07:26,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:07:26,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:07:26,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 175 transitions. [2024-11-19 14:07:26,400 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32771535580524347 [2024-11-19 14:07:26,401 INFO L175 Difference]: Start difference. First operand has 72 places, 72 transitions, 198 flow. Second operand 6 states and 175 transitions. [2024-11-19 14:07:26,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 70 transitions, 296 flow [2024-11-19 14:07:26,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 70 transitions, 296 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 14:07:26,403 INFO L231 Difference]: Finished difference. Result has 75 places, 70 transitions, 214 flow [2024-11-19 14:07:26,403 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=214, PETRI_PLACES=75, PETRI_TRANSITIONS=70} [2024-11-19 14:07:26,404 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, -14 predicate places. [2024-11-19 14:07:26,404 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 70 transitions, 214 flow [2024-11-19 14:07:26,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:26,404 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:26,404 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-19 14:07:26,420 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 14:07:26,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:26,609 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-19 14:07:26,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:26,610 INFO L85 PathProgramCache]: Analyzing trace with hash -553103877, now seen corresponding path program 1 times [2024-11-19 14:07:26,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:26,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312200983] [2024-11-19 14:07:26,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:26,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:26,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:26,672 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:26,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:26,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312200983] [2024-11-19 14:07:26,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312200983] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:07:26,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910733770] [2024-11-19 14:07:26,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:26,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:26,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:07:26,675 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:07:26,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 14:07:26,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:26,794 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:07:26,795 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:07:26,816 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:26,817 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:07:26,849 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:26,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910733770] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:07:26,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:07:26,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-19 14:07:26,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10300773] [2024-11-19 14:07:26,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:07:26,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 14:07:26,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:26,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 14:07:26,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-19 14:07:26,874 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 89 [2024-11-19 14:07:26,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 70 transitions, 214 flow. Second operand has 12 states, 12 states have (on average 21.083333333333332) internal successors, (253), 12 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:26,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:26,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 89 [2024-11-19 14:07:26,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:28,111 INFO L124 PetriNetUnfolderBase]: 5641/8609 cut-off events. [2024-11-19 14:07:28,111 INFO L125 PetriNetUnfolderBase]: For 61/61 co-relation queries the response was YES. [2024-11-19 14:07:28,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16893 conditions, 8609 events. 5641/8609 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 1068. Compared 61366 event pairs, 4968 based on Foata normal form. 6/4259 useless extension candidates. Maximal degree in co-relation 16751. Up to 7975 conditions per place. [2024-11-19 14:07:28,147 INFO L140 encePairwiseOnDemand]: 80/89 looper letters, 46 selfloop transitions, 25 changer transitions 0/88 dead transitions. [2024-11-19 14:07:28,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 88 transitions, 470 flow [2024-11-19 14:07:28,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 14:07:28,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 14:07:28,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 277 transitions. [2024-11-19 14:07:28,150 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3112359550561798 [2024-11-19 14:07:28,150 INFO L175 Difference]: Start difference. First operand has 75 places, 70 transitions, 214 flow. Second operand 10 states and 277 transitions. [2024-11-19 14:07:28,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 88 transitions, 470 flow [2024-11-19 14:07:28,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 88 transitions, 412 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-19 14:07:28,152 INFO L231 Difference]: Finished difference. Result has 82 places, 88 transitions, 354 flow [2024-11-19 14:07:28,152 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=354, PETRI_PLACES=82, PETRI_TRANSITIONS=88} [2024-11-19 14:07:28,153 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, -7 predicate places. [2024-11-19 14:07:28,153 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 88 transitions, 354 flow [2024-11-19 14:07:28,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 21.083333333333332) internal successors, (253), 12 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:28,153 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:28,153 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:07:28,167 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 14:07:28,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-19 14:07:28,354 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-19 14:07:28,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:28,355 INFO L85 PathProgramCache]: Analyzing trace with hash -461698551, now seen corresponding path program 1 times [2024-11-19 14:07:28,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:28,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445484286] [2024-11-19 14:07:28,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:28,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:28,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:28,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:28,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:28,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445484286] [2024-11-19 14:07:28,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445484286] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:07:28,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:07:28,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:07:28,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292569793] [2024-11-19 14:07:28,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:07:28,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:07:28,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:28,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:07:28,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:07:28,459 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 89 [2024-11-19 14:07:28,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 88 transitions, 354 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:28,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:28,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 89 [2024-11-19 14:07:28,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:29,607 INFO L124 PetriNetUnfolderBase]: 5639/8608 cut-off events. [2024-11-19 14:07:29,608 INFO L125 PetriNetUnfolderBase]: For 86/86 co-relation queries the response was YES. [2024-11-19 14:07:29,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16901 conditions, 8608 events. 5639/8608 cut-off events. For 86/86 co-relation queries the response was YES. Maximal size of possible extension queue 1067. Compared 61291 event pairs, 4968 based on Foata normal form. 3/4257 useless extension candidates. Maximal degree in co-relation 16834. Up to 7984 conditions per place. [2024-11-19 14:07:29,653 INFO L140 encePairwiseOnDemand]: 83/89 looper letters, 60 selfloop transitions, 7 changer transitions 1/87 dead transitions. [2024-11-19 14:07:29,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 87 transitions, 484 flow [2024-11-19 14:07:29,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:07:29,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:07:29,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 149 transitions. [2024-11-19 14:07:29,656 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41853932584269665 [2024-11-19 14:07:29,656 INFO L175 Difference]: Start difference. First operand has 82 places, 88 transitions, 354 flow. Second operand 4 states and 149 transitions. [2024-11-19 14:07:29,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 87 transitions, 484 flow [2024-11-19 14:07:29,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 87 transitions, 461 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-19 14:07:29,659 INFO L231 Difference]: Finished difference. Result has 84 places, 86 transitions, 337 flow [2024-11-19 14:07:29,660 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=337, PETRI_PLACES=84, PETRI_TRANSITIONS=86} [2024-11-19 14:07:29,660 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, -5 predicate places. [2024-11-19 14:07:29,661 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 86 transitions, 337 flow [2024-11-19 14:07:29,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:29,661 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:29,661 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:07:29,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 14:07:29,662 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-19 14:07:29,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:29,662 INFO L85 PathProgramCache]: Analyzing trace with hash -250033678, now seen corresponding path program 1 times [2024-11-19 14:07:29,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:29,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223773298] [2024-11-19 14:07:29,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:29,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:29,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:29,975 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:07:29,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:29,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223773298] [2024-11-19 14:07:29,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223773298] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:07:29,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502849230] [2024-11-19 14:07:29,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:29,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:29,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:07:29,980 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:07:29,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 14:07:30,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:30,111 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-19 14:07:30,113 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:07:30,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 14:07:30,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:07:30,192 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:07:30,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-19 14:07:30,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-19 14:07:30,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:07:30,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502849230] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:07:30,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:07:30,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2024-11-19 14:07:30,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653129245] [2024-11-19 14:07:30,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:07:30,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 14:07:30,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:30,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 14:07:30,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-19 14:07:30,273 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 89 [2024-11-19 14:07:30,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 86 transitions, 337 flow. Second operand has 13 states, 13 states have (on average 25.76923076923077) internal successors, (335), 13 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:30,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:30,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 89 [2024-11-19 14:07:30,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:32,351 INFO L124 PetriNetUnfolderBase]: 9655/15811 cut-off events. [2024-11-19 14:07:32,351 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-11-19 14:07:32,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29816 conditions, 15811 events. 9655/15811 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 1291. Compared 129827 event pairs, 1968 based on Foata normal form. 0/8288 useless extension candidates. Maximal degree in co-relation 29749. Up to 5348 conditions per place. [2024-11-19 14:07:32,413 INFO L140 encePairwiseOnDemand]: 72/89 looper letters, 102 selfloop transitions, 23 changer transitions 0/144 dead transitions. [2024-11-19 14:07:32,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 144 transitions, 709 flow [2024-11-19 14:07:32,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 14:07:32,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 14:07:32,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 300 transitions. [2024-11-19 14:07:32,416 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42134831460674155 [2024-11-19 14:07:32,416 INFO L175 Difference]: Start difference. First operand has 84 places, 86 transitions, 337 flow. Second operand 8 states and 300 transitions. [2024-11-19 14:07:32,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 144 transitions, 709 flow [2024-11-19 14:07:32,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 144 transitions, 686 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-19 14:07:32,418 INFO L231 Difference]: Finished difference. Result has 88 places, 94 transitions, 409 flow [2024-11-19 14:07:32,419 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=409, PETRI_PLACES=88, PETRI_TRANSITIONS=94} [2024-11-19 14:07:32,419 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, -1 predicate places. [2024-11-19 14:07:32,419 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 94 transitions, 409 flow [2024-11-19 14:07:32,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 25.76923076923077) internal successors, (335), 13 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:32,420 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:32,420 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:07:32,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-19 14:07:32,622 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 [2024-11-19 14:07:32,623 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-19 14:07:32,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:32,624 INFO L85 PathProgramCache]: Analyzing trace with hash -250033668, now seen corresponding path program 1 times [2024-11-19 14:07:32,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:32,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400643368] [2024-11-19 14:07:32,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:32,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:32,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:32,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:07:32,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:32,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400643368] [2024-11-19 14:07:32,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400643368] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:07:32,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:07:32,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 14:07:32,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352903971] [2024-11-19 14:07:32,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:07:32,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:07:32,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:32,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:07:32,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:07:32,734 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 89 [2024-11-19 14:07:32,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 94 transitions, 409 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:32,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:32,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 89 [2024-11-19 14:07:32,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:34,199 INFO L124 PetriNetUnfolderBase]: 9101/15265 cut-off events. [2024-11-19 14:07:34,200 INFO L125 PetriNetUnfolderBase]: For 3386/3386 co-relation queries the response was YES. [2024-11-19 14:07:34,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34134 conditions, 15265 events. 9101/15265 cut-off events. For 3386/3386 co-relation queries the response was YES. Maximal size of possible extension queue 1325. Compared 126996 event pairs, 2968 based on Foata normal form. 0/8534 useless extension candidates. Maximal degree in co-relation 34066. Up to 8183 conditions per place. [2024-11-19 14:07:34,274 INFO L140 encePairwiseOnDemand]: 85/89 looper letters, 98 selfloop transitions, 2 changer transitions 0/119 dead transitions. [2024-11-19 14:07:34,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 119 transitions, 660 flow [2024-11-19 14:07:34,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:07:34,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:07:34,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 151 transitions. [2024-11-19 14:07:34,275 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5655430711610487 [2024-11-19 14:07:34,275 INFO L175 Difference]: Start difference. First operand has 88 places, 94 transitions, 409 flow. Second operand 3 states and 151 transitions. [2024-11-19 14:07:34,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 119 transitions, 660 flow [2024-11-19 14:07:34,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 119 transitions, 638 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 14:07:34,284 INFO L231 Difference]: Finished difference. Result has 86 places, 92 transitions, 383 flow [2024-11-19 14:07:34,284 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=383, PETRI_PLACES=86, PETRI_TRANSITIONS=92} [2024-11-19 14:07:34,284 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, -3 predicate places. [2024-11-19 14:07:34,284 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 92 transitions, 383 flow [2024-11-19 14:07:34,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:34,285 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:34,285 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:07:34,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 14:07:34,285 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-19 14:07:34,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:34,285 INFO L85 PathProgramCache]: Analyzing trace with hash -250033677, now seen corresponding path program 1 times [2024-11-19 14:07:34,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:34,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863619162] [2024-11-19 14:07:34,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:34,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:34,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:34,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:07:34,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:34,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863619162] [2024-11-19 14:07:34,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863619162] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:07:34,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304313933] [2024-11-19 14:07:34,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:34,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:34,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:07:34,510 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) [2024-11-19 14:07:34,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 14:07:34,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:34,626 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-19 14:07:34,627 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:07:34,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 14:07:34,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:07:34,682 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:07:34,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-19 14:07:34,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-19 14:07:34,734 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:07:34,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304313933] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:07:34,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:07:34,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2024-11-19 14:07:34,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968680261] [2024-11-19 14:07:34,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:07:34,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 14:07:34,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:34,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 14:07:34,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-19 14:07:34,759 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 89 [2024-11-19 14:07:34,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 92 transitions, 383 flow. Second operand has 13 states, 13 states have (on average 25.76923076923077) internal successors, (335), 13 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:34,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:34,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 89 [2024-11-19 14:07:34,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:37,052 INFO L124 PetriNetUnfolderBase]: 8559/14381 cut-off events. [2024-11-19 14:07:37,052 INFO L125 PetriNetUnfolderBase]: For 3603/3603 co-relation queries the response was YES. [2024-11-19 14:07:37,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32457 conditions, 14381 events. 8559/14381 cut-off events. For 3603/3603 co-relation queries the response was YES. Maximal size of possible extension queue 1247. Compared 119605 event pairs, 2657 based on Foata normal form. 0/8322 useless extension candidates. Maximal degree in co-relation 32390. Up to 4584 conditions per place. [2024-11-19 14:07:37,125 INFO L140 encePairwiseOnDemand]: 72/89 looper letters, 99 selfloop transitions, 23 changer transitions 0/141 dead transitions. [2024-11-19 14:07:37,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 141 transitions, 729 flow [2024-11-19 14:07:37,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 14:07:37,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 14:07:37,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 297 transitions. [2024-11-19 14:07:37,127 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41713483146067415 [2024-11-19 14:07:37,127 INFO L175 Difference]: Start difference. First operand has 86 places, 92 transitions, 383 flow. Second operand 8 states and 297 transitions. [2024-11-19 14:07:37,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 141 transitions, 729 flow [2024-11-19 14:07:37,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 141 transitions, 727 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:07:37,137 INFO L231 Difference]: Finished difference. Result has 92 places, 91 transitions, 423 flow [2024-11-19 14:07:37,137 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=423, PETRI_PLACES=92, PETRI_TRANSITIONS=91} [2024-11-19 14:07:37,138 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 3 predicate places. [2024-11-19 14:07:37,138 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 91 transitions, 423 flow [2024-11-19 14:07:37,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 25.76923076923077) internal successors, (335), 13 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:37,138 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:37,138 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:07:37,150 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 14:07:37,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:37,339 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-19 14:07:37,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:37,339 INFO L85 PathProgramCache]: Analyzing trace with hash -250033675, now seen corresponding path program 1 times [2024-11-19 14:07:37,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:37,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245612778] [2024-11-19 14:07:37,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:37,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:37,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:37,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:37,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:37,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245612778] [2024-11-19 14:07:37,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245612778] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:07:37,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431238753] [2024-11-19 14:07:37,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:37,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:37,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:07:37,629 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) [2024-11-19 14:07:37,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 14:07:37,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:37,754 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-19 14:07:37,757 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:07:37,761 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 [2024-11-19 14:07:37,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 14:07:37,810 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 14:07:37,810 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 [2024-11-19 14:07:37,830 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-19 14:07:37,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:37,856 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:07:37,965 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 14:07:37,965 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 24 treesize of output 25 [2024-11-19 14:07:37,973 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 14:07:37,973 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 39 treesize of output 35 [2024-11-19 14:07:37,977 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 11 treesize of output 9 [2024-11-19 14:07:38,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:38,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431238753] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:07:38,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:07:38,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2024-11-19 14:07:38,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192055344] [2024-11-19 14:07:38,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:07:38,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 14:07:38,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:38,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 14:07:38,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=190, Unknown=2, NotChecked=0, Total=240 [2024-11-19 14:07:38,026 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 89 [2024-11-19 14:07:38,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 91 transitions, 423 flow. Second operand has 16 states, 16 states have (on average 23.875) internal successors, (382), 16 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:38,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:38,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 89 [2024-11-19 14:07:38,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:39,741 INFO L124 PetriNetUnfolderBase]: 10185/15946 cut-off events. [2024-11-19 14:07:39,741 INFO L125 PetriNetUnfolderBase]: For 4941/4941 co-relation queries the response was YES. [2024-11-19 14:07:39,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38166 conditions, 15946 events. 10185/15946 cut-off events. For 4941/4941 co-relation queries the response was YES. Maximal size of possible extension queue 1332. Compared 123195 event pairs, 6157 based on Foata normal form. 0/9579 useless extension candidates. Maximal degree in co-relation 38097. Up to 9813 conditions per place. [2024-11-19 14:07:39,821 INFO L140 encePairwiseOnDemand]: 77/89 looper letters, 108 selfloop transitions, 17 changer transitions 0/142 dead transitions. [2024-11-19 14:07:39,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 142 transitions, 779 flow [2024-11-19 14:07:39,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 14:07:39,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 14:07:39,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 350 transitions. [2024-11-19 14:07:39,822 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3575076608784474 [2024-11-19 14:07:39,823 INFO L175 Difference]: Start difference. First operand has 92 places, 91 transitions, 423 flow. Second operand 11 states and 350 transitions. [2024-11-19 14:07:39,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 142 transitions, 779 flow [2024-11-19 14:07:39,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 142 transitions, 754 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-19 14:07:39,834 INFO L231 Difference]: Finished difference. Result has 97 places, 90 transitions, 428 flow [2024-11-19 14:07:39,834 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=428, PETRI_PLACES=97, PETRI_TRANSITIONS=90} [2024-11-19 14:07:39,835 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 8 predicate places. [2024-11-19 14:07:39,835 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 90 transitions, 428 flow [2024-11-19 14:07:39,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 23.875) internal successors, (382), 16 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:39,836 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:39,836 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:07:39,848 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 14:07:40,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:40,036 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-19 14:07:40,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:40,037 INFO L85 PathProgramCache]: Analyzing trace with hash -250033674, now seen corresponding path program 1 times [2024-11-19 14:07:40,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:40,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666311135] [2024-11-19 14:07:40,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:40,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:40,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:40,302 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:40,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:40,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666311135] [2024-11-19 14:07:40,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666311135] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:07:40,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072649181] [2024-11-19 14:07:40,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:40,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:40,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:07:40,305 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) [2024-11-19 14:07:40,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 14:07:40,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:40,424 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-19 14:07:40,426 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:07:40,430 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 [2024-11-19 14:07:40,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 14:07:40,470 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 14:07:40,470 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 [2024-11-19 14:07:40,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-19 14:07:40,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:40,519 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:07:40,616 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 14:07:40,616 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 22 treesize of output 23 [2024-11-19 14:07:40,624 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 14:07:40,624 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 33 treesize of output 29 [2024-11-19 14:07:40,629 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 9 treesize of output 7 [2024-11-19 14:07:40,659 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:40,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072649181] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:07:40,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:07:40,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2024-11-19 14:07:40,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613940382] [2024-11-19 14:07:40,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:07:40,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 14:07:40,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:40,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 14:07:40,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=189, Unknown=5, NotChecked=0, Total=240 [2024-11-19 14:07:40,682 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 89 [2024-11-19 14:07:40,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 90 transitions, 428 flow. Second operand has 16 states, 16 states have (on average 23.875) internal successors, (382), 16 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:40,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:40,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 89 [2024-11-19 14:07:40,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:42,530 INFO L124 PetriNetUnfolderBase]: 9643/15182 cut-off events. [2024-11-19 14:07:42,531 INFO L125 PetriNetUnfolderBase]: For 6494/6494 co-relation queries the response was YES. [2024-11-19 14:07:42,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37065 conditions, 15182 events. 9643/15182 cut-off events. For 6494/6494 co-relation queries the response was YES. Maximal size of possible extension queue 1332. Compared 116681 event pairs, 6157 based on Foata normal form. 222/9511 useless extension candidates. Maximal degree in co-relation 36995. Up to 9813 conditions per place. [2024-11-19 14:07:42,615 INFO L140 encePairwiseOnDemand]: 77/89 looper letters, 107 selfloop transitions, 17 changer transitions 0/141 dead transitions. [2024-11-19 14:07:42,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 141 transitions, 782 flow [2024-11-19 14:07:42,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 14:07:42,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 14:07:42,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 349 transitions. [2024-11-19 14:07:42,617 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3564862104187947 [2024-11-19 14:07:42,617 INFO L175 Difference]: Start difference. First operand has 97 places, 90 transitions, 428 flow. Second operand 11 states and 349 transitions. [2024-11-19 14:07:42,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 141 transitions, 782 flow [2024-11-19 14:07:42,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 141 transitions, 759 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-19 14:07:42,630 INFO L231 Difference]: Finished difference. Result has 102 places, 89 transitions, 435 flow [2024-11-19 14:07:42,630 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=435, PETRI_PLACES=102, PETRI_TRANSITIONS=89} [2024-11-19 14:07:42,632 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 13 predicate places. [2024-11-19 14:07:42,632 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 89 transitions, 435 flow [2024-11-19 14:07:42,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 23.875) internal successors, (382), 16 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:42,633 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:42,633 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:07:42,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-19 14:07:42,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:42,834 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-19 14:07:42,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:42,835 INFO L85 PathProgramCache]: Analyzing trace with hash 235859774, now seen corresponding path program 1 times [2024-11-19 14:07:42,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:42,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131515256] [2024-11-19 14:07:42,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:42,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:42,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:42,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:07:42,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:42,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131515256] [2024-11-19 14:07:42,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131515256] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:07:42,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:07:42,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:07:42,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597833997] [2024-11-19 14:07:42,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:07:42,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:07:42,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:42,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:07:42,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:07:42,893 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 89 [2024-11-19 14:07:42,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 89 transitions, 435 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:42,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:42,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 89 [2024-11-19 14:07:42,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:44,349 INFO L124 PetriNetUnfolderBase]: 9643/14937 cut-off events. [2024-11-19 14:07:44,349 INFO L125 PetriNetUnfolderBase]: For 8723/8723 co-relation queries the response was YES. [2024-11-19 14:07:44,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37044 conditions, 14937 events. 9643/14937 cut-off events. For 8723/8723 co-relation queries the response was YES. Maximal size of possible extension queue 1311. Compared 112871 event pairs, 7157 based on Foata normal form. 444/9748 useless extension candidates. Maximal degree in co-relation 36974. Up to 11367 conditions per place. [2024-11-19 14:07:44,417 INFO L140 encePairwiseOnDemand]: 83/89 looper letters, 120 selfloop transitions, 4 changer transitions 0/140 dead transitions. [2024-11-19 14:07:44,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 140 transitions, 791 flow [2024-11-19 14:07:44,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:07:44,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:07:44,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 188 transitions. [2024-11-19 14:07:44,418 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5280898876404494 [2024-11-19 14:07:44,418 INFO L175 Difference]: Start difference. First operand has 102 places, 89 transitions, 435 flow. Second operand 4 states and 188 transitions. [2024-11-19 14:07:44,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 140 transitions, 791 flow [2024-11-19 14:07:44,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 140 transitions, 758 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-11-19 14:07:44,435 INFO L231 Difference]: Finished difference. Result has 98 places, 90 transitions, 423 flow [2024-11-19 14:07:44,436 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=423, PETRI_PLACES=98, PETRI_TRANSITIONS=90} [2024-11-19 14:07:44,436 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 9 predicate places. [2024-11-19 14:07:44,436 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 90 transitions, 423 flow [2024-11-19 14:07:44,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:44,437 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:44,437 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:07:44,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 14:07:44,437 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-19 14:07:44,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:44,437 INFO L85 PathProgramCache]: Analyzing trace with hash 210036937, now seen corresponding path program 1 times [2024-11-19 14:07:44,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:44,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776639310] [2024-11-19 14:07:44,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:44,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:44,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:44,523 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:07:44,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:44,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776639310] [2024-11-19 14:07:44,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776639310] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:07:44,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582015001] [2024-11-19 14:07:44,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:44,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:44,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:07:44,526 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) [2024-11-19 14:07:44,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 14:07:44,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:44,641 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-19 14:07:44,642 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:07:44,695 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:07:44,696 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:07:44,759 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:07:44,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582015001] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:07:44,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:07:44,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-11-19 14:07:44,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560882159] [2024-11-19 14:07:44,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:07:44,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-19 14:07:44,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:44,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-19 14:07:44,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-11-19 14:07:44,855 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 89 [2024-11-19 14:07:44,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 90 transitions, 423 flow. Second operand has 17 states, 17 states have (on average 20.705882352941178) internal successors, (352), 17 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:44,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:44,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 89 [2024-11-19 14:07:44,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:46,548 INFO L124 PetriNetUnfolderBase]: 10187/16012 cut-off events. [2024-11-19 14:07:46,548 INFO L125 PetriNetUnfolderBase]: For 13886/13886 co-relation queries the response was YES. [2024-11-19 14:07:46,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42992 conditions, 16012 events. 10187/16012 cut-off events. For 13886/13886 co-relation queries the response was YES. Maximal size of possible extension queue 1195. Compared 119262 event pairs, 8260 based on Foata normal form. 1/9665 useless extension candidates. Maximal degree in co-relation 42895. Up to 11633 conditions per place. [2024-11-19 14:07:46,630 INFO L140 encePairwiseOnDemand]: 78/89 looper letters, 107 selfloop transitions, 40 changer transitions 0/164 dead transitions. [2024-11-19 14:07:46,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 164 transitions, 1086 flow [2024-11-19 14:07:46,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 14:07:46,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-19 14:07:46,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 347 transitions. [2024-11-19 14:07:46,632 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3249063670411985 [2024-11-19 14:07:46,632 INFO L175 Difference]: Start difference. First operand has 98 places, 90 transitions, 423 flow. Second operand 12 states and 347 transitions. [2024-11-19 14:07:46,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 164 transitions, 1086 flow [2024-11-19 14:07:46,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 164 transitions, 1068 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 14:07:46,640 INFO L231 Difference]: Finished difference. Result has 111 places, 106 transitions, 651 flow [2024-11-19 14:07:46,640 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=651, PETRI_PLACES=111, PETRI_TRANSITIONS=106} [2024-11-19 14:07:46,641 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 22 predicate places. [2024-11-19 14:07:46,641 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 106 transitions, 651 flow [2024-11-19 14:07:46,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 20.705882352941178) internal successors, (352), 17 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:46,641 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:46,641 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-19 14:07:46,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-19 14:07:46,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:46,842 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-19 14:07:46,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:46,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1731142930, now seen corresponding path program 2 times [2024-11-19 14:07:46,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:46,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122640659] [2024-11-19 14:07:46,846 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:07:46,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:46,865 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:07:46,865 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:07:46,882 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:07:46,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:46,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122640659] [2024-11-19 14:07:46,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122640659] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:07:46,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031848509] [2024-11-19 14:07:46,883 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:07:46,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:46,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:07:46,885 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) [2024-11-19 14:07:46,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 14:07:46,992 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:07:46,992 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:07:46,993 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 14:07:46,994 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:07:47,011 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:07:47,011 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:07:47,026 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:07:47,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031848509] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:07:47,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:07:47,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-11-19 14:07:47,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487139666] [2024-11-19 14:07:47,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:07:47,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:07:47,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:47,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:07:47,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:07:47,031 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 89 [2024-11-19 14:07:47,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 106 transitions, 651 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:47,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:47,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 89 [2024-11-19 14:07:47,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:48,538 INFO L124 PetriNetUnfolderBase]: 9445/15349 cut-off events. [2024-11-19 14:07:48,539 INFO L125 PetriNetUnfolderBase]: For 11934/11934 co-relation queries the response was YES. [2024-11-19 14:07:48,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41745 conditions, 15349 events. 9445/15349 cut-off events. For 11934/11934 co-relation queries the response was YES. Maximal size of possible extension queue 1264. Compared 119628 event pairs, 8470 based on Foata normal form. 1/9643 useless extension candidates. Maximal degree in co-relation 41645. Up to 13538 conditions per place. [2024-11-19 14:07:48,622 INFO L140 encePairwiseOnDemand]: 84/89 looper letters, 72 selfloop transitions, 15 changer transitions 0/105 dead transitions. [2024-11-19 14:07:48,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 105 transitions, 815 flow [2024-11-19 14:07:48,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:07:48,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:07:48,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2024-11-19 14:07:48,623 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35674157303370785 [2024-11-19 14:07:48,623 INFO L175 Difference]: Start difference. First operand has 111 places, 106 transitions, 651 flow. Second operand 4 states and 127 transitions. [2024-11-19 14:07:48,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 105 transitions, 815 flow [2024-11-19 14:07:48,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 105 transitions, 789 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-19 14:07:48,636 INFO L231 Difference]: Finished difference. Result has 112 places, 105 transitions, 645 flow [2024-11-19 14:07:48,636 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=615, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=645, PETRI_PLACES=112, PETRI_TRANSITIONS=105} [2024-11-19 14:07:48,637 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 23 predicate places. [2024-11-19 14:07:48,637 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 105 transitions, 645 flow [2024-11-19 14:07:48,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:48,637 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:48,637 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:07:48,651 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-19 14:07:48,837 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,SelfDestructingSolverStorable11 [2024-11-19 14:07:48,837 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-19 14:07:48,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:48,838 INFO L85 PathProgramCache]: Analyzing trace with hash -59998746, now seen corresponding path program 1 times [2024-11-19 14:07:48,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:48,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184730483] [2024-11-19 14:07:48,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:48,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:48,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:49,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:49,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:49,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184730483] [2024-11-19 14:07:49,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184730483] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:07:49,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138197608] [2024-11-19 14:07:49,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:49,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:49,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:07:49,178 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) [2024-11-19 14:07:49,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 14:07:49,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:49,298 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-19 14:07:49,300 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:07:49,312 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 [2024-11-19 14:07:49,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 14:07:49,381 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 14:07:49,382 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 [2024-11-19 14:07:49,394 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-19 14:07:49,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:49,433 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:07:49,632 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 14:07:49,632 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 26 treesize of output 27 [2024-11-19 14:07:49,644 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 14:07:49,644 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 41 treesize of output 33 [2024-11-19 14:07:49,648 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 13 treesize of output 7 [2024-11-19 14:07:49,716 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:49,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138197608] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:07:49,717 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:07:49,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-11-19 14:07:49,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595367565] [2024-11-19 14:07:49,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:07:49,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 14:07:49,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:49,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 14:07:49,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=256, Unknown=3, NotChecked=0, Total=306 [2024-11-19 14:07:49,903 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 89 [2024-11-19 14:07:49,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 105 transitions, 645 flow. Second operand has 18 states, 18 states have (on average 16.11111111111111) internal successors, (290), 18 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:49,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:49,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 89 [2024-11-19 14:07:49,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:54,555 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] [2024-11-19 14:07:58,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-19 14:08:02,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-19 14:08:10,048 INFO L124 PetriNetUnfolderBase]: 41891/67084 cut-off events. [2024-11-19 14:08:10,048 INFO L125 PetriNetUnfolderBase]: For 50161/50161 co-relation queries the response was YES. [2024-11-19 14:08:10,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177923 conditions, 67084 events. 41891/67084 cut-off events. For 50161/50161 co-relation queries the response was YES. Maximal size of possible extension queue 2482. Compared 554020 event pairs, 25398 based on Foata normal form. 0/42443 useless extension candidates. Maximal degree in co-relation 177816. Up to 18638 conditions per place. [2024-11-19 14:08:10,668 INFO L140 encePairwiseOnDemand]: 77/89 looper letters, 274 selfloop transitions, 60 changer transitions 4/350 dead transitions. [2024-11-19 14:08:10,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 350 transitions, 2448 flow [2024-11-19 14:08:10,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-19 14:08:10,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-19 14:08:10,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 656 transitions. [2024-11-19 14:08:10,671 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.28349178910976663 [2024-11-19 14:08:10,671 INFO L175 Difference]: Start difference. First operand has 112 places, 105 transitions, 645 flow. Second operand 26 states and 656 transitions. [2024-11-19 14:08:10,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 350 transitions, 2448 flow [2024-11-19 14:08:10,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 350 transitions, 2418 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 14:08:10,699 INFO L231 Difference]: Finished difference. Result has 137 places, 128 transitions, 908 flow [2024-11-19 14:08:10,699 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=615, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=908, PETRI_PLACES=137, PETRI_TRANSITIONS=128} [2024-11-19 14:08:10,700 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 48 predicate places. [2024-11-19 14:08:10,700 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 128 transitions, 908 flow [2024-11-19 14:08:10,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 16.11111111111111) internal successors, (290), 18 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:08:10,701 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:08:10,701 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:08:10,714 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-19 14:08:10,902 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,SelfDestructingSolverStorable12 [2024-11-19 14:08:10,902 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-19 14:08:10,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:08:10,903 INFO L85 PathProgramCache]: Analyzing trace with hash -59998741, now seen corresponding path program 1 times [2024-11-19 14:08:10,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:08:10,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150778378] [2024-11-19 14:08:10,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:08:10,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:08:10,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:08:11,007 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:08:11,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:08:11,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150778378] [2024-11-19 14:08:11,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150778378] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:08:11,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:08:11,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 14:08:11,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414670430] [2024-11-19 14:08:11,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:08:11,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:08:11,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:08:11,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:08:11,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:08:11,009 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 89 [2024-11-19 14:08:11,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 128 transitions, 908 flow. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:08:11,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:08:11,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 89 [2024-11-19 14:08:11,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:08:19,192 INFO L124 PetriNetUnfolderBase]: 38165/63474 cut-off events. [2024-11-19 14:08:19,192 INFO L125 PetriNetUnfolderBase]: For 62646/63346 co-relation queries the response was YES. [2024-11-19 14:08:19,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180537 conditions, 63474 events. 38165/63474 cut-off events. For 62646/63346 co-relation queries the response was YES. Maximal size of possible extension queue 3185. Compared 595662 event pairs, 14277 based on Foata normal form. 0/43204 useless extension candidates. Maximal degree in co-relation 180446. Up to 32305 conditions per place. [2024-11-19 14:08:19,706 INFO L140 encePairwiseOnDemand]: 82/89 looper letters, 147 selfloop transitions, 5 changer transitions 0/171 dead transitions. [2024-11-19 14:08:19,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 171 transitions, 1406 flow [2024-11-19 14:08:19,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:08:19,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:08:19,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 152 transitions. [2024-11-19 14:08:19,707 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5692883895131086 [2024-11-19 14:08:19,707 INFO L175 Difference]: Start difference. First operand has 137 places, 128 transitions, 908 flow. Second operand 3 states and 152 transitions. [2024-11-19 14:08:19,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 171 transitions, 1406 flow [2024-11-19 14:08:19,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 171 transitions, 1368 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-11-19 14:08:19,928 INFO L231 Difference]: Finished difference. Result has 136 places, 132 transitions, 910 flow [2024-11-19 14:08:19,928 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=870, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=910, PETRI_PLACES=136, PETRI_TRANSITIONS=132} [2024-11-19 14:08:19,929 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 47 predicate places. [2024-11-19 14:08:19,929 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 132 transitions, 910 flow [2024-11-19 14:08:19,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:08:19,929 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:08:19,929 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:08:19,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 14:08:19,929 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-19 14:08:19,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:08:19,930 INFO L85 PathProgramCache]: Analyzing trace with hash -59998740, now seen corresponding path program 1 times [2024-11-19 14:08:19,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:08:19,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105074183] [2024-11-19 14:08:19,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:08:19,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:08:19,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:08:20,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:08:20,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:08:20,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105074183] [2024-11-19 14:08:20,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105074183] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:08:20,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:08:20,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 14:08:20,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74110045] [2024-11-19 14:08:20,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:08:20,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:08:20,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:08:20,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:08:20,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:08:20,031 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 89 [2024-11-19 14:08:20,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 132 transitions, 910 flow. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:08:20,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:08:20,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 89 [2024-11-19 14:08:20,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:08:28,691 INFO L124 PetriNetUnfolderBase]: 36864/61889 cut-off events. [2024-11-19 14:08:28,692 INFO L125 PetriNetUnfolderBase]: For 72376/73132 co-relation queries the response was YES. [2024-11-19 14:08:28,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186595 conditions, 61889 events. 36864/61889 cut-off events. For 72376/73132 co-relation queries the response was YES. Maximal size of possible extension queue 2986. Compared 580643 event pairs, 10867 based on Foata normal form. 1006/48665 useless extension candidates. Maximal degree in co-relation 186504. Up to 38178 conditions per place. [2024-11-19 14:08:29,183 INFO L140 encePairwiseOnDemand]: 84/89 looper letters, 147 selfloop transitions, 3 changer transitions 0/169 dead transitions. [2024-11-19 14:08:29,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 169 transitions, 1390 flow [2024-11-19 14:08:29,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:08:29,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:08:29,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 148 transitions. [2024-11-19 14:08:29,185 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5543071161048689 [2024-11-19 14:08:29,185 INFO L175 Difference]: Start difference. First operand has 136 places, 132 transitions, 910 flow. Second operand 3 states and 148 transitions. [2024-11-19 14:08:29,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 169 transitions, 1390 flow [2024-11-19 14:08:29,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 169 transitions, 1376 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 14:08:29,379 INFO L231 Difference]: Finished difference. Result has 137 places, 134 transitions, 925 flow [2024-11-19 14:08:29,380 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=900, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=925, PETRI_PLACES=137, PETRI_TRANSITIONS=134} [2024-11-19 14:08:29,380 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 48 predicate places. [2024-11-19 14:08:29,380 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 134 transitions, 925 flow [2024-11-19 14:08:29,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:08:29,380 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:08:29,380 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:08:29,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 14:08:29,380 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-19 14:08:29,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:08:29,381 INFO L85 PathProgramCache]: Analyzing trace with hash -59998750, now seen corresponding path program 1 times [2024-11-19 14:08:29,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:08:29,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287081333] [2024-11-19 14:08:29,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:08:29,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:08:29,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:08:29,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:08:29,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:08:29,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287081333] [2024-11-19 14:08:29,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287081333] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:08:29,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822226513] [2024-11-19 14:08:29,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:08:29,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:08:29,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:08:29,647 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) [2024-11-19 14:08:29,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 14:08:29,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:08:29,774 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-19 14:08:29,776 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:08:29,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 14:08:29,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:08:29,916 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:08:30,019 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 [2024-11-19 14:08:30,022 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 [2024-11-19 14:08:30,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:08:30,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822226513] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:08:30,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:08:30,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 22 [2024-11-19 14:08:30,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135071123] [2024-11-19 14:08:30,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:08:30,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-19 14:08:30,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:08:30,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-19 14:08:30,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=463, Unknown=0, NotChecked=0, Total=552 [2024-11-19 14:08:30,295 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 89 [2024-11-19 14:08:30,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 134 transitions, 925 flow. Second operand has 24 states, 24 states have (on average 20.875) internal successors, (501), 24 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:08:30,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:08:30,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 89 [2024-11-19 14:08:30,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand