./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/array-eq-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/array-eq-trans.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 e7f1528a4c77969c5bff279724a3ed43475460be047e2e4b141f1353c3ea9cfe --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 21:57:48,448 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 21:57:48,537 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-20 21:57:48,542 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 21:57:48,544 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 21:57:48,572 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 21:57:48,572 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 21:57:48,573 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 21:57:48,573 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 21:57:48,575 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 21:57:48,575 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 21:57:48,575 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 21:57:48,576 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 21:57:48,576 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 21:57:48,576 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 21:57:48,578 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 21:57:48,578 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 21:57:48,578 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 21:57:48,578 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 21:57:48,578 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 21:57:48,579 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 21:57:48,581 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 21:57:48,581 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 21:57:48,581 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 21:57:48,582 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 21:57:48,582 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-20 21:57:48,582 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 21:57:48,582 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 21:57:48,582 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 21:57:48,582 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 21:57:48,583 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 21:57:48,583 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 21:57:48,583 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 21:57:48,583 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 21:57:48,583 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 21:57:48,583 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 21:57:48,583 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 21:57:48,584 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 21:57:48,584 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 21:57:48,584 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 21:57:48,584 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 21:57:48,585 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 21:57:48,585 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 21:57:48,585 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 21:57:48,586 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7f1528a4c77969c5bff279724a3ed43475460be047e2e4b141f1353c3ea9cfe [2024-11-20 21:57:48,825 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 21:57:48,854 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 21:57:48,857 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 21:57:48,858 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 21:57:48,858 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 21:57:48,859 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2024-11-20 21:57:50,194 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 21:57:50,341 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 21:57:50,342 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2024-11-20 21:57:50,353 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75e433f65/041e577d8ce047058f894a4c045bb84b/FLAGb48ad3278 [2024-11-20 21:57:50,376 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75e433f65/041e577d8ce047058f894a4c045bb84b [2024-11-20 21:57:50,381 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 21:57:50,382 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 21:57:50,383 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 21:57:50,383 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 21:57:50,391 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 21:57:50,395 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:57:50" (1/1) ... [2024-11-20 21:57:50,396 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@139c0d8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:57:50, skipping insertion in model container [2024-11-20 21:57:50,396 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:57:50" (1/1) ... [2024-11-20 21:57:50,424 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 21:57:50,624 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 21:57:50,637 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 21:57:50,685 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 21:57:50,702 INFO L204 MainTranslator]: Completed translation [2024-11-20 21:57:50,702 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:57:50 WrapperNode [2024-11-20 21:57:50,702 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 21:57:50,704 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 21:57:50,704 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 21:57:50,704 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 21:57:50,709 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:57:50" (1/1) ... [2024-11-20 21:57:50,719 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:57:50" (1/1) ... [2024-11-20 21:57:50,743 INFO L138 Inliner]: procedures = 23, calls = 32, calls flagged for inlining = 11, calls inlined = 15, statements flattened = 202 [2024-11-20 21:57:50,746 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 21:57:50,747 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 21:57:50,748 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 21:57:50,748 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 21:57:50,757 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:57:50" (1/1) ... [2024-11-20 21:57:50,757 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:57:50" (1/1) ... [2024-11-20 21:57:50,760 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:57:50" (1/1) ... [2024-11-20 21:57:50,782 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-20 21:57:50,782 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:57:50" (1/1) ... [2024-11-20 21:57:50,782 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:57:50" (1/1) ... [2024-11-20 21:57:50,791 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:57:50" (1/1) ... [2024-11-20 21:57:50,796 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:57:50" (1/1) ... [2024-11-20 21:57:50,799 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:57:50" (1/1) ... [2024-11-20 21:57:50,800 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:57:50" (1/1) ... [2024-11-20 21:57:50,804 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 21:57:50,804 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 21:57:50,808 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 21:57:50,808 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 21:57:50,808 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:57:50" (1/1) ... [2024-11-20 21:57:50,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 21:57:50,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 21:57:50,839 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) [2024-11-20 21:57:50,843 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 [2024-11-20 21:57:50,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 21:57:50,879 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-20 21:57:50,879 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-20 21:57:50,879 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-20 21:57:50,880 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-20 21:57:50,880 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-20 21:57:50,880 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-20 21:57:50,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 21:57:50,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-20 21:57:50,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-20 21:57:50,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-20 21:57:50,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-20 21:57:50,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 21:57:50,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 21:57:50,882 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-20 21:57:50,882 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-20 21:57:50,883 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 21:57:50,979 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 21:57:50,983 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 21:57:51,319 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 21:57:51,319 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 21:57:51,620 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 21:57:51,621 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-20 21:57:51,621 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:57:51 BoogieIcfgContainer [2024-11-20 21:57:51,622 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 21:57:51,623 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 21:57:51,623 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 21:57:51,626 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 21:57:51,626 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:57:50" (1/3) ... [2024-11-20 21:57:51,628 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25e2c89a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:57:51, skipping insertion in model container [2024-11-20 21:57:51,628 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:57:50" (2/3) ... [2024-11-20 21:57:51,651 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25e2c89a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:57:51, skipping insertion in model container [2024-11-20 21:57:51,651 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:57:51" (3/3) ... [2024-11-20 21:57:51,652 INFO L112 eAbstractionObserver]: Analyzing ICFG array-eq-trans.wvr.c [2024-11-20 21:57:51,665 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 21:57:51,665 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-11-20 21:57:51,666 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 21:57:51,719 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-20 21:57:51,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 62 transitions, 145 flow [2024-11-20 21:57:51,778 INFO L124 PetriNetUnfolderBase]: 9/59 cut-off events. [2024-11-20 21:57:51,779 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-20 21:57:51,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 59 events. 9/59 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 147 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2024-11-20 21:57:51,782 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 62 transitions, 145 flow [2024-11-20 21:57:51,785 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 57 transitions, 129 flow [2024-11-20 21:57:51,794 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 21:57:51,800 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;@60b09bdd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 21:57:51,800 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-11-20 21:57:51,804 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 21:57:51,804 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-20 21:57:51,804 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 21:57:51,804 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:57:51,805 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-20 21:57:51,806 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-20 21:57:51,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:57:51,810 INFO L85 PathProgramCache]: Analyzing trace with hash 770478, now seen corresponding path program 1 times [2024-11-20 21:57:51,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:57:51,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100260624] [2024-11-20 21:57:51,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:57:51,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:57:51,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:57:52,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:57:52,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:57:52,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100260624] [2024-11-20 21:57:52,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100260624] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:57:52,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:57:52,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 21:57:52,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201930660] [2024-11-20 21:57:52,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:57:52,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 21:57:52,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:57:52,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 21:57:52,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 21:57:52,098 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-20 21:57:52,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 57 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2024-11-20 21:57:52,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:57:52,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-20 21:57:52,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:57:52,506 INFO L124 PetriNetUnfolderBase]: 1728/2695 cut-off events. [2024-11-20 21:57:52,507 INFO L125 PetriNetUnfolderBase]: For 126/126 co-relation queries the response was YES. [2024-11-20 21:57:52,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5111 conditions, 2695 events. 1728/2695 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 14562 event pairs, 995 based on Foata normal form. 3/1816 useless extension candidates. Maximal degree in co-relation 4712. Up to 2276 conditions per place. [2024-11-20 21:57:52,529 INFO L140 encePairwiseOnDemand]: 46/62 looper letters, 41 selfloop transitions, 10 changer transitions 0/66 dead transitions. [2024-11-20 21:57:52,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 66 transitions, 249 flow [2024-11-20 21:57:52,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 21:57:52,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 21:57:52,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2024-11-20 21:57:52,539 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5201612903225806 [2024-11-20 21:57:52,541 INFO L175 Difference]: Start difference. First operand has 58 places, 57 transitions, 129 flow. Second operand 4 states and 129 transitions. [2024-11-20 21:57:52,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 66 transitions, 249 flow [2024-11-20 21:57:52,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 66 transitions, 240 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-20 21:57:52,548 INFO L231 Difference]: Finished difference. Result has 59 places, 66 transitions, 208 flow [2024-11-20 21:57:52,551 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=208, PETRI_PLACES=59, PETRI_TRANSITIONS=66} [2024-11-20 21:57:52,554 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 1 predicate places. [2024-11-20 21:57:52,554 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 66 transitions, 208 flow [2024-11-20 21:57:52,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2024-11-20 21:57:52,555 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:57:52,555 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-20 21:57:52,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 21:57:52,555 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-20 21:57:52,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:57:52,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1479239291, now seen corresponding path program 1 times [2024-11-20 21:57:52,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:57:52,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271381385] [2024-11-20 21:57:52,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:57:52,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:57:52,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:57:52,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:57:52,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:57:52,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271381385] [2024-11-20 21:57:52,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271381385] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 21:57:52,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352920788] [2024-11-20 21:57:52,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:57:52,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 21:57:52,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 21:57:52,664 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) [2024-11-20 21:57:52,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 21:57:52,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:57:52,735 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-20 21:57:52,738 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 21:57:52,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:57:52,784 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 21:57:52,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352920788] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:57:52,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 21:57:52,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-20 21:57:52,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475486228] [2024-11-20 21:57:52,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:57:52,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 21:57:52,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:57:52,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 21:57:52,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-20 21:57:52,810 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-20 21:57:52,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 66 transitions, 208 flow. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 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) [2024-11-20 21:57:52,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:57:52,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-20 21:57:52,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:57:53,120 INFO L124 PetriNetUnfolderBase]: 1728/2692 cut-off events. [2024-11-20 21:57:53,120 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-11-20 21:57:53,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5088 conditions, 2692 events. 1728/2692 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 14544 event pairs, 995 based on Foata normal form. 3/1818 useless extension candidates. Maximal degree in co-relation 5015. Up to 2261 conditions per place. [2024-11-20 21:57:53,142 INFO L140 encePairwiseOnDemand]: 49/62 looper letters, 31 selfloop transitions, 17 changer transitions 0/63 dead transitions. [2024-11-20 21:57:53,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 63 transitions, 292 flow [2024-11-20 21:57:53,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 21:57:53,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 21:57:53,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 159 transitions. [2024-11-20 21:57:53,144 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4274193548387097 [2024-11-20 21:57:53,144 INFO L175 Difference]: Start difference. First operand has 59 places, 66 transitions, 208 flow. Second operand 6 states and 159 transitions. [2024-11-20 21:57:53,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 63 transitions, 292 flow [2024-11-20 21:57:53,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 63 transitions, 292 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-20 21:57:53,149 INFO L231 Difference]: Finished difference. Result has 61 places, 63 transitions, 230 flow [2024-11-20 21:57:53,149 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=230, PETRI_PLACES=61, PETRI_TRANSITIONS=63} [2024-11-20 21:57:53,150 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 3 predicate places. [2024-11-20 21:57:53,150 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 63 transitions, 230 flow [2024-11-20 21:57:53,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 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) [2024-11-20 21:57:53,150 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:57:53,150 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-20 21:57:53,161 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-20 21:57:53,350 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 [2024-11-20 21:57:53,351 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-20 21:57:53,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:57:53,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1388221465, now seen corresponding path program 1 times [2024-11-20 21:57:53,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:57:53,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258720832] [2024-11-20 21:57:53,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:57:53,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:57:53,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:57:53,422 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:57:53,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:57:53,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258720832] [2024-11-20 21:57:53,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258720832] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 21:57:53,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068373841] [2024-11-20 21:57:53,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:57:53,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 21:57:53,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 21:57:53,425 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) [2024-11-20 21:57:53,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 21:57:53,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:57:53,474 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-20 21:57:53,475 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 21:57:53,491 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:57:53,491 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 21:57:53,519 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:57:53,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068373841] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 21:57:53,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 21:57:53,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-20 21:57:53,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332789866] [2024-11-20 21:57:53,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 21:57:53,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 21:57:53,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:57:53,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 21:57:53,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-20 21:57:53,552 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-20 21:57:53,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 63 transitions, 230 flow. Second operand has 12 states, 12 states have (on average 19.083333333333332) internal successors, (229), 12 states have internal predecessors, (229), 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) [2024-11-20 21:57:53,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:57:53,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-20 21:57:53,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:57:53,845 INFO L124 PetriNetUnfolderBase]: 1737/2728 cut-off events. [2024-11-20 21:57:53,845 INFO L125 PetriNetUnfolderBase]: For 106/106 co-relation queries the response was YES. [2024-11-20 21:57:53,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5229 conditions, 2728 events. 1737/2728 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 14903 event pairs, 995 based on Foata normal form. 9/1860 useless extension candidates. Maximal degree in co-relation 5017. Up to 2276 conditions per place. [2024-11-20 21:57:53,854 INFO L140 encePairwiseOnDemand]: 49/62 looper letters, 38 selfloop transitions, 37 changer transitions 0/90 dead transitions. [2024-11-20 21:57:53,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 90 transitions, 554 flow [2024-11-20 21:57:53,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 21:57:53,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-20 21:57:53,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 264 transitions. [2024-11-20 21:57:53,856 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4258064516129032 [2024-11-20 21:57:53,856 INFO L175 Difference]: Start difference. First operand has 61 places, 63 transitions, 230 flow. Second operand 10 states and 264 transitions. [2024-11-20 21:57:53,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 90 transitions, 554 flow [2024-11-20 21:57:53,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 90 transitions, 471 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-11-20 21:57:53,859 INFO L231 Difference]: Finished difference. Result has 68 places, 90 transitions, 445 flow [2024-11-20 21:57:53,859 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=445, PETRI_PLACES=68, PETRI_TRANSITIONS=90} [2024-11-20 21:57:53,860 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 10 predicate places. [2024-11-20 21:57:53,860 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 90 transitions, 445 flow [2024-11-20 21:57:53,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.083333333333332) internal successors, (229), 12 states have internal predecessors, (229), 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) [2024-11-20 21:57:53,860 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:57:53,860 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:57:53,869 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-20 21:57:54,064 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 [2024-11-20 21:57:54,065 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-20 21:57:54,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:57:54,065 INFO L85 PathProgramCache]: Analyzing trace with hash 2068068255, now seen corresponding path program 1 times [2024-11-20 21:57:54,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:57:54,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586523811] [2024-11-20 21:57:54,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:57:54,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:57:54,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:57:54,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:57:54,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:57:54,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586523811] [2024-11-20 21:57:54,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586523811] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:57:54,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:57:54,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 21:57:54,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167290183] [2024-11-20 21:57:54,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:57:54,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 21:57:54,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:57:54,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 21:57:54,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 21:57:54,129 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 62 [2024-11-20 21:57:54,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 90 transitions, 445 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) [2024-11-20 21:57:54,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:57:54,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 62 [2024-11-20 21:57:54,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:57:54,314 INFO L124 PetriNetUnfolderBase]: 2009/3084 cut-off events. [2024-11-20 21:57:54,314 INFO L125 PetriNetUnfolderBase]: For 142/142 co-relation queries the response was YES. [2024-11-20 21:57:54,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5978 conditions, 3084 events. 2009/3084 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 16788 event pairs, 829 based on Foata normal form. 86/2159 useless extension candidates. Maximal degree in co-relation 5880. Up to 1981 conditions per place. [2024-11-20 21:57:54,327 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 87 selfloop transitions, 3 changer transitions 0/106 dead transitions. [2024-11-20 21:57:54,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 106 transitions, 660 flow [2024-11-20 21:57:54,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 21:57:54,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 21:57:54,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 143 transitions. [2024-11-20 21:57:54,329 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5766129032258065 [2024-11-20 21:57:54,329 INFO L175 Difference]: Start difference. First operand has 68 places, 90 transitions, 445 flow. Second operand 4 states and 143 transitions. [2024-11-20 21:57:54,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 106 transitions, 660 flow [2024-11-20 21:57:54,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 106 transitions, 623 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-20 21:57:54,332 INFO L231 Difference]: Finished difference. Result has 68 places, 89 transitions, 412 flow [2024-11-20 21:57:54,333 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=412, PETRI_PLACES=68, PETRI_TRANSITIONS=89} [2024-11-20 21:57:54,333 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 10 predicate places. [2024-11-20 21:57:54,333 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 89 transitions, 412 flow [2024-11-20 21:57:54,334 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) [2024-11-20 21:57:54,334 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:57:54,334 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:57:54,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 21:57:54,334 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-20 21:57:54,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:57:54,334 INFO L85 PathProgramCache]: Analyzing trace with hash -314392714, now seen corresponding path program 1 times [2024-11-20 21:57:54,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:57:54,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117941625] [2024-11-20 21:57:54,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:57:54,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:57:54,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:57:54,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:57:54,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:57:54,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117941625] [2024-11-20 21:57:54,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117941625] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:57:54,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:57:54,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 21:57:54,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297758645] [2024-11-20 21:57:54,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:57:54,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 21:57:54,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:57:54,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 21:57:54,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 21:57:54,382 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 62 [2024-11-20 21:57:54,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 89 transitions, 412 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) [2024-11-20 21:57:54,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:57:54,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 62 [2024-11-20 21:57:54,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:57:54,695 INFO L124 PetriNetUnfolderBase]: 3164/4652 cut-off events. [2024-11-20 21:57:54,699 INFO L125 PetriNetUnfolderBase]: For 354/354 co-relation queries the response was YES. [2024-11-20 21:57:54,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9464 conditions, 4652 events. 3164/4652 cut-off events. For 354/354 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 24920 event pairs, 657 based on Foata normal form. 86/3558 useless extension candidates. Maximal degree in co-relation 9370. Up to 2383 conditions per place. [2024-11-20 21:57:54,726 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 112 selfloop transitions, 3 changer transitions 0/131 dead transitions. [2024-11-20 21:57:54,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 131 transitions, 738 flow [2024-11-20 21:57:54,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 21:57:54,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 21:57:54,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 168 transitions. [2024-11-20 21:57:54,727 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6774193548387096 [2024-11-20 21:57:54,727 INFO L175 Difference]: Start difference. First operand has 68 places, 89 transitions, 412 flow. Second operand 4 states and 168 transitions. [2024-11-20 21:57:54,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 131 transitions, 738 flow [2024-11-20 21:57:54,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 131 transitions, 728 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-20 21:57:54,733 INFO L231 Difference]: Finished difference. Result has 70 places, 91 transitions, 426 flow [2024-11-20 21:57:54,735 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=426, PETRI_PLACES=70, PETRI_TRANSITIONS=91} [2024-11-20 21:57:54,735 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 12 predicate places. [2024-11-20 21:57:54,735 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 91 transitions, 426 flow [2024-11-20 21:57:54,736 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) [2024-11-20 21:57:54,736 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:57:54,736 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:57:54,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 21:57:54,737 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-20 21:57:54,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:57:54,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1767512434, now seen corresponding path program 1 times [2024-11-20 21:57:54,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:57:54,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685656442] [2024-11-20 21:57:54,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:57:54,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:57:54,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:57:54,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:57:54,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:57:54,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685656442] [2024-11-20 21:57:54,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685656442] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:57:54,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:57:54,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 21:57:54,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46746753] [2024-11-20 21:57:54,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:57:54,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 21:57:54,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:57:54,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 21:57:54,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 21:57:54,803 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 62 [2024-11-20 21:57:54,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 91 transitions, 426 flow. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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) [2024-11-20 21:57:54,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:57:54,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 62 [2024-11-20 21:57:54,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:57:55,336 INFO L124 PetriNetUnfolderBase]: 5476/8026 cut-off events. [2024-11-20 21:57:55,336 INFO L125 PetriNetUnfolderBase]: For 1195/1297 co-relation queries the response was YES. [2024-11-20 21:57:55,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16805 conditions, 8026 events. 5476/8026 cut-off events. For 1195/1297 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 45427 event pairs, 1108 based on Foata normal form. 152/6208 useless extension candidates. Maximal degree in co-relation 16709. Up to 4449 conditions per place. [2024-11-20 21:57:55,368 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 116 selfloop transitions, 3 changer transitions 0/134 dead transitions. [2024-11-20 21:57:55,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 134 transitions, 779 flow [2024-11-20 21:57:55,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 21:57:55,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 21:57:55,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 167 transitions. [2024-11-20 21:57:55,370 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6733870967741935 [2024-11-20 21:57:55,371 INFO L175 Difference]: Start difference. First operand has 70 places, 91 transitions, 426 flow. Second operand 4 states and 167 transitions. [2024-11-20 21:57:55,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 134 transitions, 779 flow [2024-11-20 21:57:55,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 134 transitions, 775 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 21:57:55,374 INFO L231 Difference]: Finished difference. Result has 74 places, 93 transitions, 446 flow [2024-11-20 21:57:55,374 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=446, PETRI_PLACES=74, PETRI_TRANSITIONS=93} [2024-11-20 21:57:55,376 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 16 predicate places. [2024-11-20 21:57:55,376 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 93 transitions, 446 flow [2024-11-20 21:57:55,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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) [2024-11-20 21:57:55,377 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:57:55,377 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:57:55,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-20 21:57:55,377 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-20 21:57:55,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:57:55,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1456205597, now seen corresponding path program 1 times [2024-11-20 21:57:55,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:57:55,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43398088] [2024-11-20 21:57:55,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:57:55,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:57:55,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:57:55,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:57:55,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:57:55,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43398088] [2024-11-20 21:57:55,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43398088] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:57:55,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:57:55,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 21:57:55,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67471101] [2024-11-20 21:57:55,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:57:55,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 21:57:55,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:57:55,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 21:57:55,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 21:57:55,476 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 62 [2024-11-20 21:57:55,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 93 transitions, 446 flow. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:57:55,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:57:55,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 62 [2024-11-20 21:57:55,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:57:56,433 INFO L124 PetriNetUnfolderBase]: 8504/12528 cut-off events. [2024-11-20 21:57:56,433 INFO L125 PetriNetUnfolderBase]: For 3516/3966 co-relation queries the response was YES. [2024-11-20 21:57:56,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27627 conditions, 12528 events. 8504/12528 cut-off events. For 3516/3966 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 74671 event pairs, 2163 based on Foata normal form. 224/10503 useless extension candidates. Maximal degree in co-relation 27529. Up to 6413 conditions per place. [2024-11-20 21:57:56,519 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 119 selfloop transitions, 3 changer transitions 0/137 dead transitions. [2024-11-20 21:57:56,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 137 transitions, 824 flow [2024-11-20 21:57:56,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 21:57:56,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 21:57:56,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 164 transitions. [2024-11-20 21:57:56,524 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6612903225806451 [2024-11-20 21:57:56,524 INFO L175 Difference]: Start difference. First operand has 74 places, 93 transitions, 446 flow. Second operand 4 states and 164 transitions. [2024-11-20 21:57:56,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 137 transitions, 824 flow [2024-11-20 21:57:56,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 137 transitions, 820 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 21:57:56,527 INFO L231 Difference]: Finished difference. Result has 78 places, 95 transitions, 466 flow [2024-11-20 21:57:56,527 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=466, PETRI_PLACES=78, PETRI_TRANSITIONS=95} [2024-11-20 21:57:56,531 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 20 predicate places. [2024-11-20 21:57:56,531 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 95 transitions, 466 flow [2024-11-20 21:57:56,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:57:56,532 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:57:56,532 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:57:56,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-20 21:57:56,532 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-20 21:57:56,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:57:56,532 INFO L85 PathProgramCache]: Analyzing trace with hash 130547706, now seen corresponding path program 1 times [2024-11-20 21:57:56,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:57:56,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882260088] [2024-11-20 21:57:56,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:57:56,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:57:56,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:57:56,594 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 21:57:56,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:57:56,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882260088] [2024-11-20 21:57:56,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882260088] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:57:56,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:57:56,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 21:57:56,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505236116] [2024-11-20 21:57:56,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:57:56,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 21:57:56,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:57:56,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 21:57:56,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 21:57:56,600 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-11-20 21:57:56,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 95 transitions, 466 flow. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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) [2024-11-20 21:57:56,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:57:56,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-11-20 21:57:56,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:57:57,763 INFO L124 PetriNetUnfolderBase]: 9178/14736 cut-off events. [2024-11-20 21:57:57,763 INFO L125 PetriNetUnfolderBase]: For 4978/5117 co-relation queries the response was YES. [2024-11-20 21:57:57,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33377 conditions, 14736 events. 9178/14736 cut-off events. For 4978/5117 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 101326 event pairs, 6652 based on Foata normal form. 0/13048 useless extension candidates. Maximal degree in co-relation 33220. Up to 9737 conditions per place. [2024-11-20 21:57:57,834 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 124 selfloop transitions, 10 changer transitions 0/151 dead transitions. [2024-11-20 21:57:57,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 151 transitions, 1002 flow [2024-11-20 21:57:57,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 21:57:57,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 21:57:57,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 194 transitions. [2024-11-20 21:57:57,836 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6258064516129033 [2024-11-20 21:57:57,836 INFO L175 Difference]: Start difference. First operand has 78 places, 95 transitions, 466 flow. Second operand 5 states and 194 transitions. [2024-11-20 21:57:57,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 151 transitions, 1002 flow [2024-11-20 21:57:57,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 151 transitions, 999 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 21:57:57,846 INFO L231 Difference]: Finished difference. Result has 83 places, 102 transitions, 558 flow [2024-11-20 21:57:57,846 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=558, PETRI_PLACES=83, PETRI_TRANSITIONS=102} [2024-11-20 21:57:57,849 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 25 predicate places. [2024-11-20 21:57:57,849 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 102 transitions, 558 flow [2024-11-20 21:57:57,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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) [2024-11-20 21:57:57,849 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:57:57,849 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:57:57,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-20 21:57:57,850 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-20 21:57:57,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:57:57,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1804449395, now seen corresponding path program 1 times [2024-11-20 21:57:57,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:57:57,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004891201] [2024-11-20 21:57:57,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:57:57,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:57:57,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:57:57,910 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 21:57:57,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:57:57,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004891201] [2024-11-20 21:57:57,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004891201] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:57:57,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:57:57,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 21:57:57,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422896464] [2024-11-20 21:57:57,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:57:57,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 21:57:57,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:57:57,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 21:57:57,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-20 21:57:57,912 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-11-20 21:57:57,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 102 transitions, 558 flow. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 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) [2024-11-20 21:57:57,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:57:57,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-11-20 21:57:57,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:57:59,431 INFO L124 PetriNetUnfolderBase]: 11462/18144 cut-off events. [2024-11-20 21:57:59,432 INFO L125 PetriNetUnfolderBase]: For 6345/6757 co-relation queries the response was YES. [2024-11-20 21:57:59,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41392 conditions, 18144 events. 11462/18144 cut-off events. For 6345/6757 co-relation queries the response was YES. Maximal size of possible extension queue 674. Compared 125296 event pairs, 4982 based on Foata normal form. 0/16680 useless extension candidates. Maximal degree in co-relation 41174. Up to 6489 conditions per place. [2024-11-20 21:57:59,590 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 139 selfloop transitions, 14 changer transitions 0/170 dead transitions. [2024-11-20 21:57:59,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 170 transitions, 1137 flow [2024-11-20 21:57:59,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 21:57:59,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 21:57:59,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 235 transitions. [2024-11-20 21:57:59,595 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6317204301075269 [2024-11-20 21:57:59,595 INFO L175 Difference]: Start difference. First operand has 83 places, 102 transitions, 558 flow. Second operand 6 states and 235 transitions. [2024-11-20 21:57:59,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 170 transitions, 1137 flow [2024-11-20 21:57:59,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 170 transitions, 1133 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-20 21:57:59,618 INFO L231 Difference]: Finished difference. Result has 89 places, 106 transitions, 637 flow [2024-11-20 21:57:59,619 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=637, PETRI_PLACES=89, PETRI_TRANSITIONS=106} [2024-11-20 21:57:59,620 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 31 predicate places. [2024-11-20 21:57:59,620 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 106 transitions, 637 flow [2024-11-20 21:57:59,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 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) [2024-11-20 21:57:59,624 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:57:59,624 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-20 21:57:59,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-20 21:57:59,625 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-20 21:57:59,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:57:59,625 INFO L85 PathProgramCache]: Analyzing trace with hash 844002644, now seen corresponding path program 2 times [2024-11-20 21:57:59,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:57:59,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529241527] [2024-11-20 21:57:59,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:57:59,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:57:59,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:57:59,797 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:57:59,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:57:59,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529241527] [2024-11-20 21:57:59,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529241527] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 21:57:59,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022571144] [2024-11-20 21:57:59,798 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 21:57:59,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 21:57:59,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 21:57:59,799 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) [2024-11-20 21:57:59,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 21:57:59,856 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-20 21:57:59,857 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 21:57:59,857 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 21:57:59,858 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 21:57:59,898 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-20 21:57:59,898 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 21:57:59,931 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-20 21:57:59,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022571144] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 21:57:59,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 21:57:59,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-20 21:57:59,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820564645] [2024-11-20 21:57:59,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 21:57:59,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-20 21:57:59,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:57:59,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-20 21:57:59,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-20 21:57:59,967 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-20 21:57:59,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 106 transitions, 637 flow. Second operand has 14 states, 14 states have (on average 19.142857142857142) internal successors, (268), 14 states have internal predecessors, (268), 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) [2024-11-20 21:57:59,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:57:59,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-20 21:57:59,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:58:01,564 INFO L124 PetriNetUnfolderBase]: 11469/18852 cut-off events. [2024-11-20 21:58:01,564 INFO L125 PetriNetUnfolderBase]: For 7689/7729 co-relation queries the response was YES. [2024-11-20 21:58:01,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43454 conditions, 18852 events. 11469/18852 cut-off events. For 7689/7729 co-relation queries the response was YES. Maximal size of possible extension queue 687. Compared 138441 event pairs, 8454 based on Foata normal form. 8/17969 useless extension candidates. Maximal degree in co-relation 43134. Up to 15729 conditions per place. [2024-11-20 21:58:01,648 INFO L140 encePairwiseOnDemand]: 49/62 looper letters, 40 selfloop transitions, 61 changer transitions 0/115 dead transitions. [2024-11-20 21:58:01,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 115 transitions, 902 flow [2024-11-20 21:58:01,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-20 21:58:01,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-20 21:58:01,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 519 transitions. [2024-11-20 21:58:01,651 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3487903225806452 [2024-11-20 21:58:01,651 INFO L175 Difference]: Start difference. First operand has 89 places, 106 transitions, 637 flow. Second operand 24 states and 519 transitions. [2024-11-20 21:58:01,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 115 transitions, 902 flow [2024-11-20 21:58:01,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 115 transitions, 888 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-20 21:58:01,668 INFO L231 Difference]: Finished difference. Result has 111 places, 115 transitions, 833 flow [2024-11-20 21:58:01,669 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=833, PETRI_PLACES=111, PETRI_TRANSITIONS=115} [2024-11-20 21:58:01,669 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 53 predicate places. [2024-11-20 21:58:01,669 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 115 transitions, 833 flow [2024-11-20 21:58:01,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 19.142857142857142) internal successors, (268), 14 states have internal predecessors, (268), 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) [2024-11-20 21:58:01,669 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:58:01,669 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:58:01,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-20 21:58:01,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 21:58:01,871 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-20 21:58:01,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:58:01,984 INFO L85 PathProgramCache]: Analyzing trace with hash 610272312, now seen corresponding path program 1 times [2024-11-20 21:58:01,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:58:01,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315603030] [2024-11-20 21:58:01,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:58:01,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:58:02,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:58:02,095 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 21:58:02,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:58:02,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315603030] [2024-11-20 21:58:02,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315603030] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:58:02,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:58:02,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 21:58:02,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678769296] [2024-11-20 21:58:02,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:58:02,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 21:58:02,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:58:02,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 21:58:02,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 21:58:02,096 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-11-20 21:58:02,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 115 transitions, 833 flow. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:58:02,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:58:02,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-11-20 21:58:02,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:58:03,257 INFO L124 PetriNetUnfolderBase]: 9752/15640 cut-off events. [2024-11-20 21:58:03,258 INFO L125 PetriNetUnfolderBase]: For 6269/6469 co-relation queries the response was YES. [2024-11-20 21:58:03,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36428 conditions, 15640 events. 9752/15640 cut-off events. For 6269/6469 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 108079 event pairs, 7166 based on Foata normal form. 0/14999 useless extension candidates. Maximal degree in co-relation 36187. Up to 12337 conditions per place. [2024-11-20 21:58:03,346 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 130 selfloop transitions, 12 changer transitions 5/163 dead transitions. [2024-11-20 21:58:03,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 163 transitions, 1428 flow [2024-11-20 21:58:03,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 21:58:03,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 21:58:03,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 190 transitions. [2024-11-20 21:58:03,348 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6129032258064516 [2024-11-20 21:58:03,348 INFO L175 Difference]: Start difference. First operand has 111 places, 115 transitions, 833 flow. Second operand 5 states and 190 transitions. [2024-11-20 21:58:03,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 163 transitions, 1428 flow [2024-11-20 21:58:03,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 163 transitions, 1225 flow, removed 20 selfloop flow, removed 11 redundant places. [2024-11-20 21:58:03,360 INFO L231 Difference]: Finished difference. Result has 105 places, 114 transitions, 695 flow [2024-11-20 21:58:03,360 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=673, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=695, PETRI_PLACES=105, PETRI_TRANSITIONS=114} [2024-11-20 21:58:03,361 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 47 predicate places. [2024-11-20 21:58:03,361 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 114 transitions, 695 flow [2024-11-20 21:58:03,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:58:03,362 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:58:03,362 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:58:03,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-20 21:58:03,362 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-20 21:58:03,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:58:03,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1384429299, now seen corresponding path program 1 times [2024-11-20 21:58:03,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:58:03,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754047243] [2024-11-20 21:58:03,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:58:03,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:58:03,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:58:03,423 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 21:58:03,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:58:03,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754047243] [2024-11-20 21:58:03,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754047243] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:58:03,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:58:03,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 21:58:03,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050226173] [2024-11-20 21:58:03,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:58:03,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 21:58:03,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:58:03,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 21:58:03,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 21:58:03,425 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-11-20 21:58:03,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 114 transitions, 695 flow. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 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) [2024-11-20 21:58:03,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:58:03,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-11-20 21:58:03,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:58:04,170 INFO L124 PetriNetUnfolderBase]: 8401/12979 cut-off events. [2024-11-20 21:58:04,171 INFO L125 PetriNetUnfolderBase]: For 5611/6166 co-relation queries the response was YES. [2024-11-20 21:58:04,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31061 conditions, 12979 events. 8401/12979 cut-off events. For 5611/6166 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 82405 event pairs, 3460 based on Foata normal form. 67/12995 useless extension candidates. Maximal degree in co-relation 30838. Up to 5531 conditions per place. [2024-11-20 21:58:04,227 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 144 selfloop transitions, 14 changer transitions 3/177 dead transitions. [2024-11-20 21:58:04,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 177 transitions, 1273 flow [2024-11-20 21:58:04,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 21:58:04,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 21:58:04,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 233 transitions. [2024-11-20 21:58:04,229 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6263440860215054 [2024-11-20 21:58:04,230 INFO L175 Difference]: Start difference. First operand has 105 places, 114 transitions, 695 flow. Second operand 6 states and 233 transitions. [2024-11-20 21:58:04,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 177 transitions, 1273 flow [2024-11-20 21:58:04,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 177 transitions, 1249 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-20 21:58:04,242 INFO L231 Difference]: Finished difference. Result has 107 places, 114 transitions, 704 flow [2024-11-20 21:58:04,242 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=671, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=704, PETRI_PLACES=107, PETRI_TRANSITIONS=114} [2024-11-20 21:58:04,243 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 49 predicate places. [2024-11-20 21:58:04,243 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 114 transitions, 704 flow [2024-11-20 21:58:04,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 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) [2024-11-20 21:58:04,244 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:58:04,244 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:58:04,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-20 21:58:04,244 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-20 21:58:04,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:58:04,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1148795679, now seen corresponding path program 1 times [2024-11-20 21:58:04,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:58:04,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123003418] [2024-11-20 21:58:04,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:58:04,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:58:04,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:58:04,326 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 21:58:04,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:58:04,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123003418] [2024-11-20 21:58:04,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123003418] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:58:04,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:58:04,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 21:58:04,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209975149] [2024-11-20 21:58:04,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:58:04,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 21:58:04,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:58:04,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 21:58:04,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-20 21:58:04,330 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-11-20 21:58:04,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 114 transitions, 704 flow. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 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) [2024-11-20 21:58:04,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:58:04,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-11-20 21:58:04,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:58:05,542 INFO L124 PetriNetUnfolderBase]: 10798/17310 cut-off events. [2024-11-20 21:58:05,543 INFO L125 PetriNetUnfolderBase]: For 8586/8923 co-relation queries the response was YES. [2024-11-20 21:58:05,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41470 conditions, 17310 events. 10798/17310 cut-off events. For 8586/8923 co-relation queries the response was YES. Maximal size of possible extension queue 603. Compared 120328 event pairs, 5144 based on Foata normal form. 262/17517 useless extension candidates. Maximal degree in co-relation 41247. Up to 6048 conditions per place. [2024-11-20 21:58:05,646 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 129 selfloop transitions, 19 changer transitions 1/165 dead transitions. [2024-11-20 21:58:05,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 165 transitions, 1172 flow [2024-11-20 21:58:05,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 21:58:05,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 21:58:05,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 205 transitions. [2024-11-20 21:58:05,647 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6612903225806451 [2024-11-20 21:58:05,647 INFO L175 Difference]: Start difference. First operand has 107 places, 114 transitions, 704 flow. Second operand 5 states and 205 transitions. [2024-11-20 21:58:05,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 165 transitions, 1172 flow [2024-11-20 21:58:05,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 165 transitions, 1143 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-20 21:58:05,666 INFO L231 Difference]: Finished difference. Result has 108 places, 113 transitions, 709 flow [2024-11-20 21:58:05,666 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=679, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=709, PETRI_PLACES=108, PETRI_TRANSITIONS=113} [2024-11-20 21:58:05,666 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 50 predicate places. [2024-11-20 21:58:05,667 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 113 transitions, 709 flow [2024-11-20 21:58:05,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 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) [2024-11-20 21:58:05,667 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:58:05,667 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1] [2024-11-20 21:58:05,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-20 21:58:05,667 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-20 21:58:05,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:58:05,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1617871485, now seen corresponding path program 1 times [2024-11-20 21:58:05,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:58:05,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071302276] [2024-11-20 21:58:05,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:58:05,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:58:05,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:58:05,849 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:58:05,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:58:05,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071302276] [2024-11-20 21:58:05,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071302276] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 21:58:05,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844562031] [2024-11-20 21:58:05,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:58:05,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 21:58:05,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 21:58:05,852 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) [2024-11-20 21:58:05,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-20 21:58:05,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:58:05,944 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-20 21:58:05,945 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 21:58:06,004 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:58:06,004 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 21:58:06,224 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:58:06,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844562031] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 21:58:06,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 21:58:06,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2024-11-20 21:58:06,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756002304] [2024-11-20 21:58:06,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 21:58:06,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-20 21:58:06,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:58:06,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-20 21:58:06,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2024-11-20 21:58:06,289 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-20 21:58:06,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 113 transitions, 709 flow. Second operand has 28 states, 28 states have (on average 19.071428571428573) internal successors, (534), 28 states have internal predecessors, (534), 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) [2024-11-20 21:58:06,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:58:06,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-20 21:58:06,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:58:07,925 INFO L124 PetriNetUnfolderBase]: 10723/17788 cut-off events. [2024-11-20 21:58:07,925 INFO L125 PetriNetUnfolderBase]: For 10565/10597 co-relation queries the response was YES. [2024-11-20 21:58:07,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43070 conditions, 17788 events. 10723/17788 cut-off events. For 10565/10597 co-relation queries the response was YES. Maximal size of possible extension queue 620. Compared 130493 event pairs, 7960 based on Foata normal form. 42/17671 useless extension candidates. Maximal degree in co-relation 42138. Up to 14797 conditions per place. [2024-11-20 21:58:08,022 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 43 selfloop transitions, 126 changer transitions 0/183 dead transitions. [2024-11-20 21:58:08,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 183 transitions, 1621 flow [2024-11-20 21:58:08,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-20 21:58:08,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-20 21:58:08,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 628 transitions. [2024-11-20 21:58:08,025 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38957816377171217 [2024-11-20 21:58:08,025 INFO L175 Difference]: Start difference. First operand has 108 places, 113 transitions, 709 flow. Second operand 26 states and 628 transitions. [2024-11-20 21:58:08,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 183 transitions, 1621 flow [2024-11-20 21:58:08,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 183 transitions, 1588 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 21:58:08,049 INFO L231 Difference]: Finished difference. Result has 138 places, 183 transitions, 1586 flow [2024-11-20 21:58:08,049 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1586, PETRI_PLACES=138, PETRI_TRANSITIONS=183} [2024-11-20 21:58:08,050 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 80 predicate places. [2024-11-20 21:58:08,050 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 183 transitions, 1586 flow [2024-11-20 21:58:08,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 19.071428571428573) internal successors, (534), 28 states have internal predecessors, (534), 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) [2024-11-20 21:58:08,050 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:58:08,050 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:58:08,058 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-20 21:58:08,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 21:58:08,255 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-20 21:58:08,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:58:08,255 INFO L85 PathProgramCache]: Analyzing trace with hash -873364429, now seen corresponding path program 1 times [2024-11-20 21:58:08,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:58:08,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152499499] [2024-11-20 21:58:08,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:58:08,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:58:08,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:58:08,386 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 21:58:08,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:58:08,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152499499] [2024-11-20 21:58:08,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152499499] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 21:58:08,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096417876] [2024-11-20 21:58:08,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:58:08,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 21:58:08,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 21:58:08,391 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) [2024-11-20 21:58:08,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-20 21:58:08,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:58:08,463 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-20 21:58:08,464 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 21:58:08,578 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 21:58:08,579 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 21:58:08,672 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 21:58:08,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096417876] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 21:58:08,673 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 21:58:08,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 20 [2024-11-20 21:58:08,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590865261] [2024-11-20 21:58:08,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 21:58:08,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-20 21:58:08,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:58:08,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-20 21:58:08,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2024-11-20 21:58:09,077 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-20 21:58:09,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 183 transitions, 1586 flow. Second operand has 21 states, 21 states have (on average 17.952380952380953) internal successors, (377), 21 states have internal predecessors, (377), 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) [2024-11-20 21:58:09,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:58:09,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-20 21:58:09,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:58:14,256 INFO L124 PetriNetUnfolderBase]: 33758/52405 cut-off events. [2024-11-20 21:58:14,257 INFO L125 PetriNetUnfolderBase]: For 31274/32940 co-relation queries the response was YES. [2024-11-20 21:58:14,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128344 conditions, 52405 events. 33758/52405 cut-off events. For 31274/32940 co-relation queries the response was YES. Maximal size of possible extension queue 1735. Compared 413082 event pairs, 13312 based on Foata normal form. 870/52940 useless extension candidates. Maximal degree in co-relation 127706. Up to 7493 conditions per place. [2024-11-20 21:58:15,030 INFO L140 encePairwiseOnDemand]: 49/62 looper letters, 591 selfloop transitions, 268 changer transitions 40/912 dead transitions. [2024-11-20 21:58:15,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 912 transitions, 8602 flow [2024-11-20 21:58:15,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-20 21:58:15,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2024-11-20 21:58:15,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 1182 transitions. [2024-11-20 21:58:15,038 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4056280027453672 [2024-11-20 21:58:15,039 INFO L175 Difference]: Start difference. First operand has 138 places, 183 transitions, 1586 flow. Second operand 47 states and 1182 transitions. [2024-11-20 21:58:15,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 912 transitions, 8602 flow [2024-11-20 21:58:15,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 912 transitions, 6929 flow, removed 600 selfloop flow, removed 12 redundant places. [2024-11-20 21:58:15,120 INFO L231 Difference]: Finished difference. Result has 184 places, 430 transitions, 3944 flow [2024-11-20 21:58:15,120 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1239, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=3944, PETRI_PLACES=184, PETRI_TRANSITIONS=430} [2024-11-20 21:58:15,120 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 126 predicate places. [2024-11-20 21:58:15,121 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 430 transitions, 3944 flow [2024-11-20 21:58:15,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 17.952380952380953) internal successors, (377), 21 states have internal predecessors, (377), 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) [2024-11-20 21:58:15,121 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:58:15,121 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:58:15,131 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-20 21:58:15,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-20 21:58:15,322 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-20 21:58:15,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:58:15,323 INFO L85 PathProgramCache]: Analyzing trace with hash -553337275, now seen corresponding path program 1 times [2024-11-20 21:58:15,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:58:15,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649948589] [2024-11-20 21:58:15,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:58:15,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:58:15,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:58:15,405 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 21:58:15,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:58:15,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649948589] [2024-11-20 21:58:15,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649948589] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:58:15,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:58:15,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 21:58:15,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798066201] [2024-11-20 21:58:15,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:58:15,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 21:58:15,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:58:15,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 21:58:15,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-20 21:58:15,407 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-11-20 21:58:15,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 430 transitions, 3944 flow. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 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) [2024-11-20 21:58:15,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:58:15,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-11-20 21:58:15,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:58:20,130 INFO L124 PetriNetUnfolderBase]: 28077/44707 cut-off events. [2024-11-20 21:58:20,131 INFO L125 PetriNetUnfolderBase]: For 47741/48743 co-relation queries the response was YES. [2024-11-20 21:58:20,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115286 conditions, 44707 events. 28077/44707 cut-off events. For 47741/48743 co-relation queries the response was YES. Maximal size of possible extension queue 1494. Compared 354169 event pairs, 12342 based on Foata normal form. 236/44865 useless extension candidates. Maximal degree in co-relation 114697. Up to 19610 conditions per place. [2024-11-20 21:58:20,759 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 414 selfloop transitions, 40 changer transitions 15/485 dead transitions. [2024-11-20 21:58:20,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 485 transitions, 5132 flow [2024-11-20 21:58:20,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 21:58:20,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 21:58:20,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 199 transitions. [2024-11-20 21:58:20,761 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6419354838709678 [2024-11-20 21:58:20,761 INFO L175 Difference]: Start difference. First operand has 184 places, 430 transitions, 3944 flow. Second operand 5 states and 199 transitions. [2024-11-20 21:58:20,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 485 transitions, 5132 flow [2024-11-20 21:58:20,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 485 transitions, 5055 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-11-20 21:58:20,868 INFO L231 Difference]: Finished difference. Result has 183 places, 426 transitions, 3900 flow [2024-11-20 21:58:20,869 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3869, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3900, PETRI_PLACES=183, PETRI_TRANSITIONS=426} [2024-11-20 21:58:20,869 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 125 predicate places. [2024-11-20 21:58:20,870 INFO L471 AbstractCegarLoop]: Abstraction has has 183 places, 426 transitions, 3900 flow [2024-11-20 21:58:20,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 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) [2024-11-20 21:58:20,870 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:58:20,870 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:58:20,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-20 21:58:20,870 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-20 21:58:20,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:58:20,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1636799628, now seen corresponding path program 1 times [2024-11-20 21:58:20,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:58:20,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636983963] [2024-11-20 21:58:20,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:58:20,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:58:20,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:58:20,941 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 21:58:20,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:58:20,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636983963] [2024-11-20 21:58:20,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636983963] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 21:58:20,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276467315] [2024-11-20 21:58:20,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:58:20,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 21:58:20,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 21:58:20,945 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) [2024-11-20 21:58:20,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-20 21:58:21,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:58:21,019 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-20 21:58:21,020 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 21:58:21,140 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 21:58:21,140 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 21:58:21,252 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 21:58:21,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276467315] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 21:58:21,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 21:58:21,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 8] total 18 [2024-11-20 21:58:21,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436850954] [2024-11-20 21:58:21,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 21:58:21,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-20 21:58:21,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:58:21,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-20 21:58:21,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2024-11-20 21:58:21,351 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-20 21:58:21,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 426 transitions, 3900 flow. Second operand has 19 states, 19 states have (on average 18.526315789473685) internal successors, (352), 19 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) [2024-11-20 21:58:21,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:58:21,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-20 21:58:21,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:58:25,993 INFO L124 PetriNetUnfolderBase]: 25309/38811 cut-off events. [2024-11-20 21:58:25,993 INFO L125 PetriNetUnfolderBase]: For 48412/49310 co-relation queries the response was YES. [2024-11-20 21:58:26,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103420 conditions, 38811 events. 25309/38811 cut-off events. For 48412/49310 co-relation queries the response was YES. Maximal size of possible extension queue 1289. Compared 287694 event pairs, 8714 based on Foata normal form. 882/39186 useless extension candidates. Maximal degree in co-relation 102816. Up to 8526 conditions per place. [2024-11-20 21:58:26,439 INFO L140 encePairwiseOnDemand]: 48/62 looper letters, 392 selfloop transitions, 194 changer transitions 12/610 dead transitions. [2024-11-20 21:58:26,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 610 transitions, 5926 flow [2024-11-20 21:58:26,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-20 21:58:26,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-20 21:58:26,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 466 transitions. [2024-11-20 21:58:26,444 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44212523719165087 [2024-11-20 21:58:26,444 INFO L175 Difference]: Start difference. First operand has 183 places, 426 transitions, 3900 flow. Second operand 17 states and 466 transitions. [2024-11-20 21:58:26,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 610 transitions, 5926 flow [2024-11-20 21:58:26,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 610 transitions, 5833 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-20 21:58:26,544 INFO L231 Difference]: Finished difference. Result has 196 places, 427 transitions, 4218 flow [2024-11-20 21:58:26,544 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3817, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4218, PETRI_PLACES=196, PETRI_TRANSITIONS=427} [2024-11-20 21:58:26,545 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 138 predicate places. [2024-11-20 21:58:26,545 INFO L471 AbstractCegarLoop]: Abstraction has has 196 places, 427 transitions, 4218 flow [2024-11-20 21:58:26,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 18.526315789473685) internal successors, (352), 19 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) [2024-11-20 21:58:26,545 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:58:26,545 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:58:26,552 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-20 21:58:26,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-20 21:58:26,748 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-20 21:58:26,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:58:26,748 INFO L85 PathProgramCache]: Analyzing trace with hash -168509946, now seen corresponding path program 1 times [2024-11-20 21:58:26,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:58:26,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257756309] [2024-11-20 21:58:26,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:58:26,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:58:26,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:58:26,828 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 21:58:26,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:58:26,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257756309] [2024-11-20 21:58:26,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257756309] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 21:58:26,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469839705] [2024-11-20 21:58:26,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:58:26,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 21:58:26,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 21:58:26,834 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) [2024-11-20 21:58:26,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-20 21:58:26,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:58:26,913 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-20 21:58:26,914 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 21:58:27,039 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 21:58:27,040 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 21:58:27,185 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 21:58:27,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469839705] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 21:58:27,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 21:58:27,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 17 [2024-11-20 21:58:27,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344259732] [2024-11-20 21:58:27,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 21:58:27,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-20 21:58:27,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:58:27,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-20 21:58:27,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2024-11-20 21:58:27,286 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-20 21:58:27,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 427 transitions, 4218 flow. Second operand has 18 states, 18 states have (on average 19.055555555555557) internal successors, (343), 18 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:58:27,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:58:27,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-20 21:58:27,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:58:31,159 INFO L124 PetriNetUnfolderBase]: 22650/34631 cut-off events. [2024-11-20 21:58:31,159 INFO L125 PetriNetUnfolderBase]: For 53814/54182 co-relation queries the response was YES. [2024-11-20 21:58:31,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95673 conditions, 34631 events. 22650/34631 cut-off events. For 53814/54182 co-relation queries the response was YES. Maximal size of possible extension queue 1112. Compared 249922 event pairs, 8754 based on Foata normal form. 748/34948 useless extension candidates. Maximal degree in co-relation 95042. Up to 7803 conditions per place. [2024-11-20 21:58:31,361 INFO L140 encePairwiseOnDemand]: 48/62 looper letters, 450 selfloop transitions, 163 changer transitions 32/656 dead transitions. [2024-11-20 21:58:31,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 656 transitions, 6910 flow [2024-11-20 21:58:31,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-20 21:58:31,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-20 21:58:31,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 473 transitions. [2024-11-20 21:58:31,362 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4487666034155598 [2024-11-20 21:58:31,362 INFO L175 Difference]: Start difference. First operand has 196 places, 427 transitions, 4218 flow. Second operand 17 states and 473 transitions. [2024-11-20 21:58:31,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 656 transitions, 6910 flow [2024-11-20 21:58:31,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 656 transitions, 6749 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-11-20 21:58:31,441 INFO L231 Difference]: Finished difference. Result has 203 places, 426 transitions, 4460 flow [2024-11-20 21:58:31,441 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=4123, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4460, PETRI_PLACES=203, PETRI_TRANSITIONS=426} [2024-11-20 21:58:31,442 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 145 predicate places. [2024-11-20 21:58:31,442 INFO L471 AbstractCegarLoop]: Abstraction has has 203 places, 426 transitions, 4460 flow [2024-11-20 21:58:31,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 19.055555555555557) internal successors, (343), 18 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:58:31,442 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:58:31,442 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:58:31,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-20 21:58:31,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 21:58:31,643 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-20 21:58:31,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:58:31,643 INFO L85 PathProgramCache]: Analyzing trace with hash -260381577, now seen corresponding path program 1 times [2024-11-20 21:58:31,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:58:31,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839329447] [2024-11-20 21:58:31,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:58:31,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:58:31,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:58:31,762 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-20 21:58:31,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:58:31,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839329447] [2024-11-20 21:58:31,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839329447] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 21:58:31,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836607408] [2024-11-20 21:58:31,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:58:31,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 21:58:31,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 21:58:31,766 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) [2024-11-20 21:58:31,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-20 21:58:31,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:58:31,879 INFO L255 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-20 21:58:31,880 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 21:58:31,965 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-20 21:58:31,966 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 21:58:32,047 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-20 21:58:32,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836607408] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 21:58:32,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 21:58:32,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 8] total 18 [2024-11-20 21:58:32,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362460612] [2024-11-20 21:58:32,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 21:58:32,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-20 21:58:32,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:58:32,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-20 21:58:32,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2024-11-20 21:58:32,121 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-20 21:58:32,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 426 transitions, 4460 flow. Second operand has 19 states, 19 states have (on average 18.36842105263158) internal successors, (349), 19 states have internal predecessors, (349), 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) [2024-11-20 21:58:32,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:58:32,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-20 21:58:32,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand