./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-vector-add.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 63e73d2abe89b782ca9e5c579baa72b5461ffc3c60c322f6f03d18cdd5548702 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-15 00:04:28,800 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-15 00:04:28,840 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-15 00:04:28,843 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-15 00:04:28,844 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-15 00:04:28,859 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-15 00:04:28,859 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-15 00:04:28,860 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-15 00:04:28,860 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-15 00:04:28,860 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-15 00:04:28,861 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-15 00:04:28,861 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-15 00:04:28,862 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-15 00:04:28,862 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-15 00:04:28,862 INFO L153 SettingsManager]: * Use SBE=true [2024-10-15 00:04:28,862 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-15 00:04:28,863 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-15 00:04:28,863 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-15 00:04:28,863 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-15 00:04:28,864 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-15 00:04:28,864 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-15 00:04:28,865 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-15 00:04:28,865 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-15 00:04:28,865 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-15 00:04:28,865 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-15 00:04:28,866 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-15 00:04:28,866 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-15 00:04:28,866 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-15 00:04:28,866 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-15 00:04:28,867 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-15 00:04:28,867 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-15 00:04:28,867 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-15 00:04:28,867 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-15 00:04:28,868 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-15 00:04:28,868 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 00:04:28,868 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-15 00:04:28,868 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-15 00:04:28,875 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-15 00:04:28,875 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-15 00:04:28,876 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-15 00:04:28,876 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-15 00:04:28,876 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-15 00:04:28,876 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-15 00:04:28,877 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-15 00:04:28,877 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63e73d2abe89b782ca9e5c579baa72b5461ffc3c60c322f6f03d18cdd5548702 [2024-10-15 00:04:29,051 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-15 00:04:29,068 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-15 00:04:29,071 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-15 00:04:29,072 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-15 00:04:29,072 INFO L274 PluginConnector]: CDTParser initialized [2024-10-15 00:04:29,073 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2024-10-15 00:04:30,560 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-15 00:04:30,752 INFO L384 CDTParser]: Found 1 translation units. [2024-10-15 00:04:30,752 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2024-10-15 00:04:30,759 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf9b479cb/c1889bf4727240598ae550b145836a82/FLAG0125734f2 [2024-10-15 00:04:31,145 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf9b479cb/c1889bf4727240598ae550b145836a82 [2024-10-15 00:04:31,147 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-15 00:04:31,148 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-15 00:04:31,149 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-15 00:04:31,150 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-15 00:04:31,156 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-15 00:04:31,157 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:04:31" (1/1) ... [2024-10-15 00:04:31,159 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@469ad916 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:31, skipping insertion in model container [2024-10-15 00:04:31,161 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:04:31" (1/1) ... [2024-10-15 00:04:31,183 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-15 00:04:31,389 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 00:04:31,402 INFO L200 MainTranslator]: Completed pre-run [2024-10-15 00:04:31,495 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 00:04:31,577 INFO L204 MainTranslator]: Completed translation [2024-10-15 00:04:31,578 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:31 WrapperNode [2024-10-15 00:04:31,578 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-15 00:04:31,583 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-15 00:04:31,583 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-15 00:04:31,583 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-15 00:04:31,588 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:31" (1/1) ... [2024-10-15 00:04:31,601 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:31" (1/1) ... [2024-10-15 00:04:31,622 INFO L138 Inliner]: procedures = 24, calls = 32, calls flagged for inlining = 12, calls inlined = 18, statements flattened = 195 [2024-10-15 00:04:31,622 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-15 00:04:31,623 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-15 00:04:31,623 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-15 00:04:31,623 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-15 00:04:31,633 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:31" (1/1) ... [2024-10-15 00:04:31,633 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:31" (1/1) ... [2024-10-15 00:04:31,636 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:31" (1/1) ... [2024-10-15 00:04:31,652 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 7 writes are split as follows [0, 7]. [2024-10-15 00:04:31,653 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:31" (1/1) ... [2024-10-15 00:04:31,653 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:31" (1/1) ... [2024-10-15 00:04:31,660 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:31" (1/1) ... [2024-10-15 00:04:31,665 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:31" (1/1) ... [2024-10-15 00:04:31,669 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:31" (1/1) ... [2024-10-15 00:04:31,670 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:31" (1/1) ... [2024-10-15 00:04:31,673 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-15 00:04:31,674 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-15 00:04:31,674 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-15 00:04:31,674 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-15 00:04:31,675 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:31" (1/1) ... [2024-10-15 00:04:31,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 00:04:31,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:04:31,707 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-15 00:04:31,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-15 00:04:31,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-15 00:04:31,752 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-15 00:04:31,752 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-15 00:04:31,753 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-15 00:04:31,753 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-15 00:04:31,753 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-15 00:04:31,753 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-15 00:04:31,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-15 00:04:31,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-15 00:04:31,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-15 00:04:31,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-15 00:04:31,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-15 00:04:31,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-15 00:04:31,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-15 00:04:31,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-15 00:04:31,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-15 00:04:31,755 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-15 00:04:31,844 INFO L238 CfgBuilder]: Building ICFG [2024-10-15 00:04:31,845 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-15 00:04:32,132 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-15 00:04:32,133 INFO L287 CfgBuilder]: Performing block encoding [2024-10-15 00:04:32,392 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-15 00:04:32,395 INFO L314 CfgBuilder]: Removed 7 assume(true) statements. [2024-10-15 00:04:32,396 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:04:32 BoogieIcfgContainer [2024-10-15 00:04:32,396 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-15 00:04:32,397 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-15 00:04:32,398 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-15 00:04:32,400 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-15 00:04:32,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 12:04:31" (1/3) ... [2024-10-15 00:04:32,403 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10897f6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:04:32, skipping insertion in model container [2024-10-15 00:04:32,403 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:31" (2/3) ... [2024-10-15 00:04:32,405 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10897f6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:04:32, skipping insertion in model container [2024-10-15 00:04:32,405 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:04:32" (3/3) ... [2024-10-15 00:04:32,406 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-vector-add.wvr.c [2024-10-15 00:04:32,421 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-15 00:04:32,422 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2024-10-15 00:04:32,422 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-15 00:04:32,467 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-15 00:04:32,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 59 transitions, 139 flow [2024-10-15 00:04:32,531 INFO L124 PetriNetUnfolderBase]: 7/56 cut-off events. [2024-10-15 00:04:32,534 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-15 00:04:32,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 56 events. 7/56 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 133 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2024-10-15 00:04:32,541 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 59 transitions, 139 flow [2024-10-15 00:04:32,544 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 54 transitions, 123 flow [2024-10-15 00:04:32,555 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-15 00:04:32,566 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;@7598bf4b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-15 00:04:32,566 INFO L334 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2024-10-15 00:04:32,570 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-15 00:04:32,570 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-15 00:04:32,571 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-15 00:04:32,571 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:04:32,571 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-15 00:04:32,572 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-15 00:04:32,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:04:32,576 INFO L85 PathProgramCache]: Analyzing trace with hash 749884, now seen corresponding path program 1 times [2024-10-15 00:04:32,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:04:32,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243005510] [2024-10-15 00:04:32,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:32,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:04:32,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:32,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:04:32,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:04:32,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243005510] [2024-10-15 00:04:32,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243005510] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:04:32,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:04:32,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 00:04:32,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708225199] [2024-10-15 00:04:32,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:04:32,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:04:32,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:04:32,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:04:32,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:04:32,939 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-10-15 00:04:32,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 54 transitions, 123 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:32,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:04:32,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-10-15 00:04:32,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:04:33,109 INFO L124 PetriNetUnfolderBase]: 433/779 cut-off events. [2024-10-15 00:04:33,109 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2024-10-15 00:04:33,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1480 conditions, 779 events. 433/779 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3526 event pairs, 306 based on Foata normal form. 4/595 useless extension candidates. Maximal degree in co-relation 1301. Up to 619 conditions per place. [2024-10-15 00:04:33,119 INFO L140 encePairwiseOnDemand]: 45/59 looper letters, 27 selfloop transitions, 10 changer transitions 0/50 dead transitions. [2024-10-15 00:04:33,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 50 transitions, 189 flow [2024-10-15 00:04:33,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:04:33,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:04:33,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 105 transitions. [2024-10-15 00:04:33,129 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4449152542372881 [2024-10-15 00:04:33,130 INFO L175 Difference]: Start difference. First operand has 57 places, 54 transitions, 123 flow. Second operand 4 states and 105 transitions. [2024-10-15 00:04:33,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 50 transitions, 189 flow [2024-10-15 00:04:33,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 50 transitions, 180 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-15 00:04:33,135 INFO L231 Difference]: Finished difference. Result has 51 places, 50 transitions, 126 flow [2024-10-15 00:04:33,136 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=126, PETRI_PLACES=51, PETRI_TRANSITIONS=50} [2024-10-15 00:04:33,139 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, -6 predicate places. [2024-10-15 00:04:33,139 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 50 transitions, 126 flow [2024-10-15 00:04:33,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:33,139 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:04:33,139 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-10-15 00:04:33,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-15 00:04:33,140 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-15 00:04:33,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:04:33,140 INFO L85 PathProgramCache]: Analyzing trace with hash 23247138, now seen corresponding path program 1 times [2024-10-15 00:04:33,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:04:33,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828560988] [2024-10-15 00:04:33,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:33,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:04:33,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:33,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:04:33,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:04:33,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828560988] [2024-10-15 00:04:33,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828560988] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:04:33,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:04:33,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 00:04:33,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001759250] [2024-10-15 00:04:33,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:04:33,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:04:33,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:04:33,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:04:33,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:04:33,210 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-10-15 00:04:33,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 50 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:33,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:04:33,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-10-15 00:04:33,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:04:33,339 INFO L124 PetriNetUnfolderBase]: 437/795 cut-off events. [2024-10-15 00:04:33,339 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-15 00:04:33,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1500 conditions, 795 events. 437/795 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3624 event pairs, 306 based on Foata normal form. 4/617 useless extension candidates. Maximal degree in co-relation 1412. Up to 636 conditions per place. [2024-10-15 00:04:33,386 INFO L140 encePairwiseOnDemand]: 42/59 looper letters, 36 selfloop transitions, 13 changer transitions 0/62 dead transitions. [2024-10-15 00:04:33,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 62 transitions, 266 flow [2024-10-15 00:04:33,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:04:33,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:04:33,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2024-10-15 00:04:33,388 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4957627118644068 [2024-10-15 00:04:33,388 INFO L175 Difference]: Start difference. First operand has 51 places, 50 transitions, 126 flow. Second operand 4 states and 117 transitions. [2024-10-15 00:04:33,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 62 transitions, 266 flow [2024-10-15 00:04:33,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 62 transitions, 228 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-15 00:04:33,392 INFO L231 Difference]: Finished difference. Result has 54 places, 62 transitions, 214 flow [2024-10-15 00:04:33,393 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=214, PETRI_PLACES=54, PETRI_TRANSITIONS=62} [2024-10-15 00:04:33,393 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, -3 predicate places. [2024-10-15 00:04:33,394 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 62 transitions, 214 flow [2024-10-15 00:04:33,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:33,394 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:04:33,394 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-15 00:04:33,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-15 00:04:33,394 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-15 00:04:33,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:04:33,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1066508435, now seen corresponding path program 1 times [2024-10-15 00:04:33,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:04:33,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186050247] [2024-10-15 00:04:33,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:33,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:04:33,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:33,468 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:04:33,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:04:33,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186050247] [2024-10-15 00:04:33,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186050247] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:04:33,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079333989] [2024-10-15 00:04:33,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:33,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:04:33,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:04:33,471 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:04:33,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-15 00:04:33,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:33,531 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-15 00:04:33,534 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:04:33,563 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:04:33,564 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:04:33,598 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:04:33,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079333989] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:04:33,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:04:33,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-10-15 00:04:33,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159097405] [2024-10-15 00:04:33,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:04:33,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-15 00:04:33,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:04:33,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-15 00:04:33,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-15 00:04:33,642 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-10-15 00:04:33,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 62 transitions, 214 flow. Second operand has 10 states, 10 states have (on average 17.0) internal successors, (170), 10 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:33,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:04:33,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-10-15 00:04:33,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:04:33,904 INFO L124 PetriNetUnfolderBase]: 449/843 cut-off events. [2024-10-15 00:04:33,904 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-10-15 00:04:33,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1654 conditions, 843 events. 449/843 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4057 event pairs, 306 based on Foata normal form. 0/655 useless extension candidates. Maximal degree in co-relation 1429. Up to 639 conditions per place. [2024-10-15 00:04:33,909 INFO L140 encePairwiseOnDemand]: 42/59 looper letters, 36 selfloop transitions, 49 changer transitions 0/98 dead transitions. [2024-10-15 00:04:33,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 98 transitions, 546 flow [2024-10-15 00:04:33,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-15 00:04:33,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-15 00:04:33,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 257 transitions. [2024-10-15 00:04:33,912 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43559322033898307 [2024-10-15 00:04:33,912 INFO L175 Difference]: Start difference. First operand has 54 places, 62 transitions, 214 flow. Second operand 10 states and 257 transitions. [2024-10-15 00:04:33,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 98 transitions, 546 flow [2024-10-15 00:04:33,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 98 transitions, 546 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-15 00:04:33,915 INFO L231 Difference]: Finished difference. Result has 66 places, 98 transitions, 540 flow [2024-10-15 00:04:33,915 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=540, PETRI_PLACES=66, PETRI_TRANSITIONS=98} [2024-10-15 00:04:33,916 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 9 predicate places. [2024-10-15 00:04:33,916 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 98 transitions, 540 flow [2024-10-15 00:04:33,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.0) internal successors, (170), 10 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:33,917 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:04:33,917 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:04:33,932 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-15 00:04:34,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:04:34,118 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-15 00:04:34,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:04:34,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1119142498, now seen corresponding path program 1 times [2024-10-15 00:04:34,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:04:34,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175958975] [2024-10-15 00:04:34,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:34,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:04:34,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:34,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:04:34,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:04:34,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175958975] [2024-10-15 00:04:34,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175958975] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:04:34,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:04:34,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-15 00:04:34,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351211304] [2024-10-15 00:04:34,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:04:34,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:04:34,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:04:34,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:04:34,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:04:34,219 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 59 [2024-10-15 00:04:34,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 98 transitions, 540 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:34,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:04:34,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 59 [2024-10-15 00:04:34,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:04:34,479 INFO L124 PetriNetUnfolderBase]: 883/1519 cut-off events. [2024-10-15 00:04:34,479 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2024-10-15 00:04:34,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3050 conditions, 1519 events. 883/1519 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 7597 event pairs, 466 based on Foata normal form. 42/1218 useless extension candidates. Maximal degree in co-relation 2926. Up to 1001 conditions per place. [2024-10-15 00:04:34,488 INFO L140 encePairwiseOnDemand]: 53/59 looper letters, 108 selfloop transitions, 4 changer transitions 0/127 dead transitions. [2024-10-15 00:04:34,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 127 transitions, 828 flow [2024-10-15 00:04:34,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:04:34,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:04:34,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 154 transitions. [2024-10-15 00:04:34,490 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.652542372881356 [2024-10-15 00:04:34,490 INFO L175 Difference]: Start difference. First operand has 66 places, 98 transitions, 540 flow. Second operand 4 states and 154 transitions. [2024-10-15 00:04:34,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 127 transitions, 828 flow [2024-10-15 00:04:34,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 127 transitions, 702 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-10-15 00:04:34,498 INFO L231 Difference]: Finished difference. Result has 67 places, 101 transitions, 443 flow [2024-10-15 00:04:34,498 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=443, PETRI_PLACES=67, PETRI_TRANSITIONS=101} [2024-10-15 00:04:34,499 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 10 predicate places. [2024-10-15 00:04:34,499 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 101 transitions, 443 flow [2024-10-15 00:04:34,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:34,499 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:04:34,500 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:04:34,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-15 00:04:34,500 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-15 00:04:34,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:04:34,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1725337039, now seen corresponding path program 1 times [2024-10-15 00:04:34,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:04:34,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702899086] [2024-10-15 00:04:34,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:34,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:04:34,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:34,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:04:34,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:04:34,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702899086] [2024-10-15 00:04:34,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702899086] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:04:34,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:04:34,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-15 00:04:34,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13615952] [2024-10-15 00:04:34,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:04:34,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:04:34,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:04:34,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:04:34,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:04:34,578 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 59 [2024-10-15 00:04:34,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 101 transitions, 443 flow. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:34,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:04:34,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 59 [2024-10-15 00:04:34,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:04:34,797 INFO L124 PetriNetUnfolderBase]: 1399/2287 cut-off events. [2024-10-15 00:04:34,797 INFO L125 PetriNetUnfolderBase]: For 896/968 co-relation queries the response was YES. [2024-10-15 00:04:34,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5338 conditions, 2287 events. 1399/2287 cut-off events. For 896/968 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 11834 event pairs, 724 based on Foata normal form. 64/1931 useless extension candidates. Maximal degree in co-relation 5229. Up to 1517 conditions per place. [2024-10-15 00:04:34,813 INFO L140 encePairwiseOnDemand]: 53/59 looper letters, 115 selfloop transitions, 4 changer transitions 0/134 dead transitions. [2024-10-15 00:04:34,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 134 transitions, 791 flow [2024-10-15 00:04:34,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:04:34,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:04:34,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 152 transitions. [2024-10-15 00:04:34,814 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6440677966101694 [2024-10-15 00:04:34,814 INFO L175 Difference]: Start difference. First operand has 67 places, 101 transitions, 443 flow. Second operand 4 states and 152 transitions. [2024-10-15 00:04:34,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 134 transitions, 791 flow [2024-10-15 00:04:34,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 134 transitions, 782 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-15 00:04:34,819 INFO L231 Difference]: Finished difference. Result has 71 places, 104 transitions, 469 flow [2024-10-15 00:04:34,819 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=469, PETRI_PLACES=71, PETRI_TRANSITIONS=104} [2024-10-15 00:04:34,819 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 14 predicate places. [2024-10-15 00:04:34,820 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 104 transitions, 469 flow [2024-10-15 00:04:34,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:34,820 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:04:34,820 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:04:34,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-15 00:04:34,820 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-15 00:04:34,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:04:34,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1456172645, now seen corresponding path program 1 times [2024-10-15 00:04:34,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:04:34,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837725221] [2024-10-15 00:04:34,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:34,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:04:34,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:34,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:04:34,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:04:34,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837725221] [2024-10-15 00:04:34,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837725221] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:04:34,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:04:34,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-15 00:04:34,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628694394] [2024-10-15 00:04:34,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:04:34,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-15 00:04:34,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:04:34,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 00:04:34,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-15 00:04:34,922 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 59 [2024-10-15 00:04:34,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 104 transitions, 469 flow. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:34,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:04:34,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 59 [2024-10-15 00:04:34,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:04:35,217 INFO L124 PetriNetUnfolderBase]: 1552/2873 cut-off events. [2024-10-15 00:04:35,217 INFO L125 PetriNetUnfolderBase]: For 1611/1629 co-relation queries the response was YES. [2024-10-15 00:04:35,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7256 conditions, 2873 events. 1552/2873 cut-off events. For 1611/1629 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 16105 event pairs, 952 based on Foata normal form. 62/2558 useless extension candidates. Maximal degree in co-relation 7071. Up to 1496 conditions per place. [2024-10-15 00:04:35,237 INFO L140 encePairwiseOnDemand]: 44/59 looper letters, 110 selfloop transitions, 59 changer transitions 0/186 dead transitions. [2024-10-15 00:04:35,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 186 transitions, 1154 flow [2024-10-15 00:04:35,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-15 00:04:35,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-15 00:04:35,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 236 transitions. [2024-10-15 00:04:35,238 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-15 00:04:35,239 INFO L175 Difference]: Start difference. First operand has 71 places, 104 transitions, 469 flow. Second operand 6 states and 236 transitions. [2024-10-15 00:04:35,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 186 transitions, 1154 flow [2024-10-15 00:04:35,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 186 transitions, 1145 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-15 00:04:35,245 INFO L231 Difference]: Finished difference. Result has 79 places, 144 transitions, 942 flow [2024-10-15 00:04:35,246 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=942, PETRI_PLACES=79, PETRI_TRANSITIONS=144} [2024-10-15 00:04:35,246 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 22 predicate places. [2024-10-15 00:04:35,246 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 144 transitions, 942 flow [2024-10-15 00:04:35,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:35,247 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:04:35,247 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:04:35,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-15 00:04:35,247 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-15 00:04:35,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:04:35,247 INFO L85 PathProgramCache]: Analyzing trace with hash 182728669, now seen corresponding path program 1 times [2024-10-15 00:04:35,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:04:35,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100481875] [2024-10-15 00:04:35,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:35,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:04:35,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:35,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:04:35,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:04:35,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100481875] [2024-10-15 00:04:35,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100481875] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:04:35,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:04:35,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-15 00:04:35,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870927145] [2024-10-15 00:04:35,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:04:35,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-15 00:04:35,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:04:35,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 00:04:35,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-15 00:04:35,323 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 59 [2024-10-15 00:04:35,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 144 transitions, 942 flow. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:35,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:04:35,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 59 [2024-10-15 00:04:35,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:04:35,635 INFO L124 PetriNetUnfolderBase]: 1868/3072 cut-off events. [2024-10-15 00:04:35,635 INFO L125 PetriNetUnfolderBase]: For 2860/3058 co-relation queries the response was YES. [2024-10-15 00:04:35,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8526 conditions, 3072 events. 1868/3072 cut-off events. For 2860/3058 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 15245 event pairs, 572 based on Foata normal form. 122/2752 useless extension candidates. Maximal degree in co-relation 8294. Up to 1144 conditions per place. [2024-10-15 00:04:35,657 INFO L140 encePairwiseOnDemand]: 53/59 looper letters, 156 selfloop transitions, 10 changer transitions 0/181 dead transitions. [2024-10-15 00:04:35,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 181 transitions, 1452 flow [2024-10-15 00:04:35,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-15 00:04:35,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-15 00:04:35,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 167 transitions. [2024-10-15 00:04:35,659 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5661016949152542 [2024-10-15 00:04:35,659 INFO L175 Difference]: Start difference. First operand has 79 places, 144 transitions, 942 flow. Second operand 5 states and 167 transitions. [2024-10-15 00:04:35,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 181 transitions, 1452 flow [2024-10-15 00:04:35,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 181 transitions, 1446 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-10-15 00:04:35,669 INFO L231 Difference]: Finished difference. Result has 82 places, 143 transitions, 954 flow [2024-10-15 00:04:35,669 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=934, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=954, PETRI_PLACES=82, PETRI_TRANSITIONS=143} [2024-10-15 00:04:35,670 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 25 predicate places. [2024-10-15 00:04:35,670 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 143 transitions, 954 flow [2024-10-15 00:04:35,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:35,670 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:04:35,670 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:04:35,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-15 00:04:35,671 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-15 00:04:35,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:04:35,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1642892853, now seen corresponding path program 1 times [2024-10-15 00:04:35,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:04:35,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373462010] [2024-10-15 00:04:35,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:35,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:04:35,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:35,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:04:35,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:04:35,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373462010] [2024-10-15 00:04:35,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373462010] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:04:35,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:04:35,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-15 00:04:35,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331115185] [2024-10-15 00:04:35,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:04:35,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-15 00:04:35,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:04:35,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-15 00:04:35,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-15 00:04:35,767 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 59 [2024-10-15 00:04:35,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 143 transitions, 954 flow. Second operand has 6 states, 6 states have (on average 26.0) internal successors, (156), 6 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:35,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:04:35,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 59 [2024-10-15 00:04:35,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:04:36,152 INFO L124 PetriNetUnfolderBase]: 1274/2333 cut-off events. [2024-10-15 00:04:36,153 INFO L125 PetriNetUnfolderBase]: For 2317/2331 co-relation queries the response was YES. [2024-10-15 00:04:36,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6675 conditions, 2333 events. 1274/2333 cut-off events. For 2317/2331 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 12509 event pairs, 824 based on Foata normal form. 34/2131 useless extension candidates. Maximal degree in co-relation 6440. Up to 1496 conditions per place. [2024-10-15 00:04:36,177 INFO L140 encePairwiseOnDemand]: 44/59 looper letters, 93 selfloop transitions, 63 changer transitions 2/174 dead transitions. [2024-10-15 00:04:36,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 174 transitions, 1398 flow [2024-10-15 00:04:36,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-15 00:04:36,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-15 00:04:36,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 255 transitions. [2024-10-15 00:04:36,182 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6174334140435835 [2024-10-15 00:04:36,183 INFO L175 Difference]: Start difference. First operand has 82 places, 143 transitions, 954 flow. Second operand 7 states and 255 transitions. [2024-10-15 00:04:36,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 174 transitions, 1398 flow [2024-10-15 00:04:36,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 174 transitions, 1354 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-15 00:04:36,192 INFO L231 Difference]: Finished difference. Result has 87 places, 149 transitions, 1147 flow [2024-10-15 00:04:36,192 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=934, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1147, PETRI_PLACES=87, PETRI_TRANSITIONS=149} [2024-10-15 00:04:36,194 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 30 predicate places. [2024-10-15 00:04:36,195 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 149 transitions, 1147 flow [2024-10-15 00:04:36,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.0) internal successors, (156), 6 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:36,195 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:04:36,196 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:04:36,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-15 00:04:36,196 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-15 00:04:36,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:04:36,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1369622251, now seen corresponding path program 1 times [2024-10-15 00:04:36,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:04:36,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309753143] [2024-10-15 00:04:36,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:36,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:04:36,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:36,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:04:36,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:04:36,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309753143] [2024-10-15 00:04:36,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309753143] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:04:36,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:04:36,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-15 00:04:36,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933275697] [2024-10-15 00:04:36,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:04:36,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-15 00:04:36,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:04:36,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 00:04:36,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-15 00:04:36,293 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 59 [2024-10-15 00:04:36,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 149 transitions, 1147 flow. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:36,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:04:36,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 59 [2024-10-15 00:04:36,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:04:36,610 INFO L124 PetriNetUnfolderBase]: 1492/2609 cut-off events. [2024-10-15 00:04:36,610 INFO L125 PetriNetUnfolderBase]: For 3354/3392 co-relation queries the response was YES. [2024-10-15 00:04:36,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7553 conditions, 2609 events. 1492/2609 cut-off events. For 3354/3392 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 13590 event pairs, 1016 based on Foata normal form. 0/2264 useless extension candidates. Maximal degree in co-relation 7289. Up to 1793 conditions per place. [2024-10-15 00:04:36,624 INFO L140 encePairwiseOnDemand]: 44/59 looper letters, 72 selfloop transitions, 55 changer transitions 29/171 dead transitions. [2024-10-15 00:04:36,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 171 transitions, 1544 flow [2024-10-15 00:04:36,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-15 00:04:36,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-15 00:04:36,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 217 transitions. [2024-10-15 00:04:36,625 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6129943502824858 [2024-10-15 00:04:36,626 INFO L175 Difference]: Start difference. First operand has 87 places, 149 transitions, 1147 flow. Second operand 6 states and 217 transitions. [2024-10-15 00:04:36,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 171 transitions, 1544 flow [2024-10-15 00:04:36,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 171 transitions, 1467 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-15 00:04:36,635 INFO L231 Difference]: Finished difference. Result has 91 places, 139 transitions, 1135 flow [2024-10-15 00:04:36,636 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=1070, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1135, PETRI_PLACES=91, PETRI_TRANSITIONS=139} [2024-10-15 00:04:36,637 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 34 predicate places. [2024-10-15 00:04:36,637 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 139 transitions, 1135 flow [2024-10-15 00:04:36,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:36,637 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:04:36,637 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-15 00:04:36,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-15 00:04:36,637 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-15 00:04:36,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:04:36,638 INFO L85 PathProgramCache]: Analyzing trace with hash -5345822, now seen corresponding path program 2 times [2024-10-15 00:04:36,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:04:36,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985418261] [2024-10-15 00:04:36,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:36,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:04:36,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:36,753 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:04:36,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:04:36,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985418261] [2024-10-15 00:04:36,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985418261] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:04:36,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102230543] [2024-10-15 00:04:36,754 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 00:04:36,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:04:36,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:04:36,758 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:04:36,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-15 00:04:36,819 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-15 00:04:36,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 00:04:36,820 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-15 00:04:36,821 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:04:36,855 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-15 00:04:36,855 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:04:36,879 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-15 00:04:36,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102230543] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:04:36,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:04:36,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-10-15 00:04:36,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999894118] [2024-10-15 00:04:36,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:04:36,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-15 00:04:36,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:04:36,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-15 00:04:36,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-15 00:04:36,932 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-10-15 00:04:36,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 139 transitions, 1135 flow. Second operand has 14 states, 14 states have (on average 17.142857142857142) internal successors, (240), 14 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:36,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:04:36,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-10-15 00:04:36,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:04:37,393 INFO L124 PetriNetUnfolderBase]: 1090/2037 cut-off events. [2024-10-15 00:04:37,393 INFO L125 PetriNetUnfolderBase]: For 2658/2674 co-relation queries the response was YES. [2024-10-15 00:04:37,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6003 conditions, 2037 events. 1090/2037 cut-off events. For 2658/2674 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 11331 event pairs, 724 based on Foata normal form. 8/1903 useless extension candidates. Maximal degree in co-relation 5624. Up to 1485 conditions per place. [2024-10-15 00:04:37,406 INFO L140 encePairwiseOnDemand]: 42/59 looper letters, 46 selfloop transitions, 100 changer transitions 0/158 dead transitions. [2024-10-15 00:04:37,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 158 transitions, 1617 flow [2024-10-15 00:04:37,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-15 00:04:37,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-15 00:04:37,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 484 transitions. [2024-10-15 00:04:37,409 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3418079096045198 [2024-10-15 00:04:37,409 INFO L175 Difference]: Start difference. First operand has 91 places, 139 transitions, 1135 flow. Second operand 24 states and 484 transitions. [2024-10-15 00:04:37,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 158 transitions, 1617 flow [2024-10-15 00:04:37,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 158 transitions, 1381 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-10-15 00:04:37,419 INFO L231 Difference]: Finished difference. Result has 101 places, 158 transitions, 1350 flow [2024-10-15 00:04:37,420 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=927, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1350, PETRI_PLACES=101, PETRI_TRANSITIONS=158} [2024-10-15 00:04:37,420 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 44 predicate places. [2024-10-15 00:04:37,420 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 158 transitions, 1350 flow [2024-10-15 00:04:37,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.142857142857142) internal successors, (240), 14 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:37,421 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:04:37,421 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1] [2024-10-15 00:04:37,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-15 00:04:37,624 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,SelfDestructingSolverStorable9 [2024-10-15 00:04:37,625 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-15 00:04:37,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:04:37,626 INFO L85 PathProgramCache]: Analyzing trace with hash -914863449, now seen corresponding path program 1 times [2024-10-15 00:04:37,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:04:37,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204254451] [2024-10-15 00:04:37,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:37,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:04:37,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:37,722 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-15 00:04:37,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:04:37,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204254451] [2024-10-15 00:04:37,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204254451] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:04:37,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:04:37,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-15 00:04:37,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131193054] [2024-10-15 00:04:37,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:04:37,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:04:37,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:04:37,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:04:37,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:04:37,725 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 59 [2024-10-15 00:04:37,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 158 transitions, 1350 flow. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:37,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:04:37,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 59 [2024-10-15 00:04:37,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:04:37,915 INFO L124 PetriNetUnfolderBase]: 1077/1965 cut-off events. [2024-10-15 00:04:37,915 INFO L125 PetriNetUnfolderBase]: For 1230/1244 co-relation queries the response was YES. [2024-10-15 00:04:37,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5056 conditions, 1965 events. 1077/1965 cut-off events. For 1230/1244 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 10908 event pairs, 724 based on Foata normal form. 3/1744 useless extension candidates. Maximal degree in co-relation 4924. Up to 1505 conditions per place. [2024-10-15 00:04:37,927 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 75 selfloop transitions, 20 changer transitions 5/115 dead transitions. [2024-10-15 00:04:37,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 115 transitions, 1017 flow [2024-10-15 00:04:37,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:04:37,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:04:37,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 145 transitions. [2024-10-15 00:04:37,929 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.614406779661017 [2024-10-15 00:04:37,929 INFO L175 Difference]: Start difference. First operand has 101 places, 158 transitions, 1350 flow. Second operand 4 states and 145 transitions. [2024-10-15 00:04:37,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 115 transitions, 1017 flow [2024-10-15 00:04:37,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 115 transitions, 785 flow, removed 51 selfloop flow, removed 13 redundant places. [2024-10-15 00:04:37,934 INFO L231 Difference]: Finished difference. Result has 91 places, 110 transitions, 603 flow [2024-10-15 00:04:37,934 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=603, PETRI_PLACES=91, PETRI_TRANSITIONS=110} [2024-10-15 00:04:37,935 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 34 predicate places. [2024-10-15 00:04:37,935 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 110 transitions, 603 flow [2024-10-15 00:04:37,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:37,935 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:04:37,935 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1] [2024-10-15 00:04:37,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-15 00:04:37,935 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-15 00:04:37,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:04:37,936 INFO L85 PathProgramCache]: Analyzing trace with hash -839634920, now seen corresponding path program 1 times [2024-10-15 00:04:37,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:04:37,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981249728] [2024-10-15 00:04:37,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:37,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:04:37,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:38,046 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-15 00:04:38,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:04:38,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981249728] [2024-10-15 00:04:38,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981249728] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:04:38,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955891098] [2024-10-15 00:04:38,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:38,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:04:38,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:04:38,053 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:04:38,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-15 00:04:38,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:38,192 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-15 00:04:38,193 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:04:38,435 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-15 00:04:38,439 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:04:38,652 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-15 00:04:38,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955891098] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:04:38,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:04:38,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2024-10-15 00:04:38,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951355177] [2024-10-15 00:04:38,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:04:38,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-15 00:04:38,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:04:38,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-15 00:04:38,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2024-10-15 00:04:38,907 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-10-15 00:04:38,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 110 transitions, 603 flow. Second operand has 19 states, 19 states have (on average 17.210526315789473) internal successors, (327), 19 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:38,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:04:38,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-10-15 00:04:38,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:04:39,466 INFO L124 PetriNetUnfolderBase]: 2129/3791 cut-off events. [2024-10-15 00:04:39,466 INFO L125 PetriNetUnfolderBase]: For 2139/2234 co-relation queries the response was YES. [2024-10-15 00:04:39,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9517 conditions, 3791 events. 2129/3791 cut-off events. For 2139/2234 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 21270 event pairs, 1448 based on Foata normal form. 3/3364 useless extension candidates. Maximal degree in co-relation 9406. Up to 1480 conditions per place. [2024-10-15 00:04:39,487 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 63 selfloop transitions, 70 changer transitions 0/145 dead transitions. [2024-10-15 00:04:39,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 145 transitions, 1033 flow [2024-10-15 00:04:39,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-15 00:04:39,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-15 00:04:39,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 248 transitions. [2024-10-15 00:04:39,491 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42033898305084744 [2024-10-15 00:04:39,491 INFO L175 Difference]: Start difference. First operand has 91 places, 110 transitions, 603 flow. Second operand 10 states and 248 transitions. [2024-10-15 00:04:39,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 145 transitions, 1033 flow [2024-10-15 00:04:39,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 145 transitions, 896 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-10-15 00:04:39,496 INFO L231 Difference]: Finished difference. Result has 93 places, 119 transitions, 692 flow [2024-10-15 00:04:39,496 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=497, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=692, PETRI_PLACES=93, PETRI_TRANSITIONS=119} [2024-10-15 00:04:39,497 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 36 predicate places. [2024-10-15 00:04:39,497 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 119 transitions, 692 flow [2024-10-15 00:04:39,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 17.210526315789473) internal successors, (327), 19 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:39,497 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:04:39,498 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:04:39,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-15 00:04:39,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:04:39,702 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-15 00:04:39,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:04:39,703 INFO L85 PathProgramCache]: Analyzing trace with hash -939343130, now seen corresponding path program 1 times [2024-10-15 00:04:39,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:04:39,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530575874] [2024-10-15 00:04:39,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:39,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:04:39,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:39,803 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-15 00:04:39,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:04:39,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530575874] [2024-10-15 00:04:39,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530575874] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:04:39,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041116309] [2024-10-15 00:04:39,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:39,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:04:39,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:04:39,807 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:04:39,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-15 00:04:39,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:39,889 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-15 00:04:39,891 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:04:39,988 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-15 00:04:39,989 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:04:40,089 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-15 00:04:40,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041116309] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:04:40,090 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:04:40,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-10-15 00:04:40,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201812704] [2024-10-15 00:04:40,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:04:40,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-15 00:04:40,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:04:40,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-15 00:04:40,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-10-15 00:04:40,216 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 59 [2024-10-15 00:04:40,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 119 transitions, 692 flow. Second operand has 19 states, 19 states have (on average 16.42105263157895) internal successors, (312), 19 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:40,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:04:40,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 59 [2024-10-15 00:04:40,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:04:41,121 INFO L124 PetriNetUnfolderBase]: 2217/3672 cut-off events. [2024-10-15 00:04:41,122 INFO L125 PetriNetUnfolderBase]: For 1695/1809 co-relation queries the response was YES. [2024-10-15 00:04:41,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9422 conditions, 3672 events. 2217/3672 cut-off events. For 1695/1809 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 18846 event pairs, 536 based on Foata normal form. 62/3282 useless extension candidates. Maximal degree in co-relation 9304. Up to 825 conditions per place. [2024-10-15 00:04:41,143 INFO L140 encePairwiseOnDemand]: 41/59 looper letters, 162 selfloop transitions, 82 changer transitions 0/254 dead transitions. [2024-10-15 00:04:41,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 254 transitions, 1615 flow [2024-10-15 00:04:41,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-15 00:04:41,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-15 00:04:41,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 421 transitions. [2024-10-15 00:04:41,148 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.419740777666999 [2024-10-15 00:04:41,148 INFO L175 Difference]: Start difference. First operand has 93 places, 119 transitions, 692 flow. Second operand 17 states and 421 transitions. [2024-10-15 00:04:41,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 254 transitions, 1615 flow [2024-10-15 00:04:41,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 254 transitions, 1615 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-15 00:04:41,156 INFO L231 Difference]: Finished difference. Result has 108 places, 123 transitions, 874 flow [2024-10-15 00:04:41,156 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=874, PETRI_PLACES=108, PETRI_TRANSITIONS=123} [2024-10-15 00:04:41,157 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 51 predicate places. [2024-10-15 00:04:41,157 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 123 transitions, 874 flow [2024-10-15 00:04:41,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 16.42105263157895) internal successors, (312), 19 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:41,157 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:04:41,157 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 2, 2, 2, 1, 1, 1] [2024-10-15 00:04:41,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-15 00:04:41,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:04:41,362 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-15 00:04:41,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:04:41,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1679455993, now seen corresponding path program 2 times [2024-10-15 00:04:41,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:04:41,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921421111] [2024-10-15 00:04:41,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:41,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:04:41,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:41,598 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 32 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:04:41,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:04:41,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921421111] [2024-10-15 00:04:41,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921421111] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:04:41,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127704695] [2024-10-15 00:04:41,599 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 00:04:41,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:04:41,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:04:41,601 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:04:41,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-15 00:04:41,659 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-15 00:04:41,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 00:04:41,660 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-15 00:04:41,661 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:04:41,727 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-15 00:04:41,727 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:04:41,771 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-15 00:04:41,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127704695] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:04:41,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:04:41,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 3, 3] total 20 [2024-10-15 00:04:41,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430420571] [2024-10-15 00:04:41,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:04:41,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-15 00:04:41,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:04:41,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-15 00:04:41,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2024-10-15 00:04:41,940 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-10-15 00:04:41,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 123 transitions, 874 flow. Second operand has 21 states, 21 states have (on average 17.238095238095237) internal successors, (362), 21 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:41,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:04:41,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-10-15 00:04:41,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:04:42,562 INFO L124 PetriNetUnfolderBase]: 2064/3500 cut-off events. [2024-10-15 00:04:42,562 INFO L125 PetriNetUnfolderBase]: For 2978/3104 co-relation queries the response was YES. [2024-10-15 00:04:42,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9811 conditions, 3500 events. 2064/3500 cut-off events. For 2978/3104 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 17899 event pairs, 1489 based on Foata normal form. 6/3127 useless extension candidates. Maximal degree in co-relation 9699. Up to 2878 conditions per place. [2024-10-15 00:04:42,583 INFO L140 encePairwiseOnDemand]: 43/59 looper letters, 31 selfloop transitions, 96 changer transitions 0/138 dead transitions. [2024-10-15 00:04:42,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 138 transitions, 1240 flow [2024-10-15 00:04:42,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-15 00:04:42,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-10-15 00:04:42,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 402 transitions. [2024-10-15 00:04:42,586 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3586083853702052 [2024-10-15 00:04:42,586 INFO L175 Difference]: Start difference. First operand has 108 places, 123 transitions, 874 flow. Second operand 19 states and 402 transitions. [2024-10-15 00:04:42,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 138 transitions, 1240 flow [2024-10-15 00:04:42,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 138 transitions, 985 flow, removed 6 selfloop flow, removed 16 redundant places. [2024-10-15 00:04:42,594 INFO L231 Difference]: Finished difference. Result has 107 places, 138 transitions, 923 flow [2024-10-15 00:04:42,595 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=923, PETRI_PLACES=107, PETRI_TRANSITIONS=138} [2024-10-15 00:04:42,595 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 50 predicate places. [2024-10-15 00:04:42,595 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 138 transitions, 923 flow [2024-10-15 00:04:42,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 17.238095238095237) internal successors, (362), 21 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:42,595 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:04:42,595 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:04:42,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-15 00:04:42,796 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,SelfDestructingSolverStorable13 [2024-10-15 00:04:42,797 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-15 00:04:42,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:04:42,797 INFO L85 PathProgramCache]: Analyzing trace with hash 99850432, now seen corresponding path program 1 times [2024-10-15 00:04:42,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:04:42,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362461819] [2024-10-15 00:04:42,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:42,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:04:42,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:42,888 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-15 00:04:42,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:04:42,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362461819] [2024-10-15 00:04:42,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362461819] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:04:42,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13410140] [2024-10-15 00:04:42,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:42,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:04:42,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:04:42,890 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:04:42,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-15 00:04:42,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:42,978 INFO L255 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-15 00:04:42,979 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:04:42,998 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-15 00:04:42,998 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 00:04:42,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13410140] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:04:42,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-15 00:04:42,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-15 00:04:42,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132745548] [2024-10-15 00:04:42,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:04:42,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-15 00:04:42,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:04:42,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-15 00:04:43,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-15 00:04:43,005 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 59 [2024-10-15 00:04:43,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 138 transitions, 923 flow. Second operand has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:43,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:04:43,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 59 [2024-10-15 00:04:43,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:04:43,383 INFO L124 PetriNetUnfolderBase]: 2376/3824 cut-off events. [2024-10-15 00:04:43,383 INFO L125 PetriNetUnfolderBase]: For 1317/1347 co-relation queries the response was YES. [2024-10-15 00:04:43,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9665 conditions, 3824 events. 2376/3824 cut-off events. For 1317/1347 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 18891 event pairs, 429 based on Foata normal form. 132/3421 useless extension candidates. Maximal degree in co-relation 9560. Up to 1059 conditions per place. [2024-10-15 00:04:43,422 INFO L140 encePairwiseOnDemand]: 54/59 looper letters, 201 selfloop transitions, 7 changer transitions 0/217 dead transitions. [2024-10-15 00:04:43,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 217 transitions, 1579 flow [2024-10-15 00:04:43,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-15 00:04:43,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-15 00:04:43,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 218 transitions. [2024-10-15 00:04:43,423 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.615819209039548 [2024-10-15 00:04:43,423 INFO L175 Difference]: Start difference. First operand has 107 places, 138 transitions, 923 flow. Second operand 6 states and 218 transitions. [2024-10-15 00:04:43,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 217 transitions, 1579 flow [2024-10-15 00:04:43,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 217 transitions, 1441 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-10-15 00:04:43,440 INFO L231 Difference]: Finished difference. Result has 101 places, 137 transitions, 795 flow [2024-10-15 00:04:43,444 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=781, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=795, PETRI_PLACES=101, PETRI_TRANSITIONS=137} [2024-10-15 00:04:43,445 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 44 predicate places. [2024-10-15 00:04:43,445 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 137 transitions, 795 flow [2024-10-15 00:04:43,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:43,445 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:04:43,446 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:04:43,477 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-15 00:04:43,647 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,SelfDestructingSolverStorable14 [2024-10-15 00:04:43,647 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-15 00:04:43,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:04:43,647 INFO L85 PathProgramCache]: Analyzing trace with hash -173420170, now seen corresponding path program 1 times [2024-10-15 00:04:43,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:04:43,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128532271] [2024-10-15 00:04:43,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:43,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:04:43,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:43,886 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-15 00:04:43,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:04:43,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128532271] [2024-10-15 00:04:43,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128532271] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:04:43,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761106200] [2024-10-15 00:04:43,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:43,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:04:43,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:04:43,888 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:04:43,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-15 00:04:43,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:43,979 INFO L255 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-15 00:04:43,980 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:04:44,119 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-15 00:04:44,119 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:04:44,284 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-15 00:04:44,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761106200] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:04:44,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:04:44,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 18 [2024-10-15 00:04:44,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71103621] [2024-10-15 00:04:44,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:04:44,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-15 00:04:44,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:04:44,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-15 00:04:44,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2024-10-15 00:04:44,419 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 59 [2024-10-15 00:04:44,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 137 transitions, 795 flow. Second operand has 20 states, 20 states have (on average 16.75) internal successors, (335), 20 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:44,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:04:44,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 59 [2024-10-15 00:04:44,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:04:45,164 INFO L124 PetriNetUnfolderBase]: 2414/3844 cut-off events. [2024-10-15 00:04:45,164 INFO L125 PetriNetUnfolderBase]: For 3737/3811 co-relation queries the response was YES. [2024-10-15 00:04:45,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10678 conditions, 3844 events. 2414/3844 cut-off events. For 3737/3811 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 18705 event pairs, 1001 based on Foata normal form. 0/3339 useless extension candidates. Maximal degree in co-relation 10582. Up to 1350 conditions per place. [2024-10-15 00:04:45,188 INFO L140 encePairwiseOnDemand]: 41/59 looper letters, 134 selfloop transitions, 66 changer transitions 12/221 dead transitions. [2024-10-15 00:04:45,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 221 transitions, 1587 flow [2024-10-15 00:04:45,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-15 00:04:45,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-15 00:04:45,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 340 transitions. [2024-10-15 00:04:45,190 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.384180790960452 [2024-10-15 00:04:45,190 INFO L175 Difference]: Start difference. First operand has 101 places, 137 transitions, 795 flow. Second operand 15 states and 340 transitions. [2024-10-15 00:04:45,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 221 transitions, 1587 flow [2024-10-15 00:04:45,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 221 transitions, 1455 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-10-15 00:04:45,203 INFO L231 Difference]: Finished difference. Result has 109 places, 141 transitions, 914 flow [2024-10-15 00:04:45,203 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=771, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=914, PETRI_PLACES=109, PETRI_TRANSITIONS=141} [2024-10-15 00:04:45,207 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 52 predicate places. [2024-10-15 00:04:45,207 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 141 transitions, 914 flow [2024-10-15 00:04:45,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 16.75) internal successors, (335), 20 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:45,208 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:04:45,208 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:04:45,224 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-15 00:04:45,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:04:45,409 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-15 00:04:45,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:04:45,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1199603103, now seen corresponding path program 1 times [2024-10-15 00:04:45,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:04:45,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584605208] [2024-10-15 00:04:45,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:45,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:04:45,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:45,561 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-15 00:04:45,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:04:45,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584605208] [2024-10-15 00:04:45,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584605208] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:04:45,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826877969] [2024-10-15 00:04:45,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:45,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:04:45,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:04:45,568 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:04:45,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-15 00:04:45,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:45,660 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-15 00:04:45,661 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:04:45,691 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-15 00:04:45,691 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:04:45,715 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-15 00:04:45,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826877969] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:04:45,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:04:45,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-15 00:04:45,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28749714] [2024-10-15 00:04:45,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:04:45,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-15 00:04:45,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:04:45,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-15 00:04:45,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-15 00:04:45,727 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 59 [2024-10-15 00:04:45,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 141 transitions, 914 flow. Second operand has 12 states, 12 states have (on average 24.416666666666668) internal successors, (293), 12 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:45,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:04:45,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 59 [2024-10-15 00:04:45,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:04:46,560 INFO L124 PetriNetUnfolderBase]: 5411/8324 cut-off events. [2024-10-15 00:04:46,560 INFO L125 PetriNetUnfolderBase]: For 5267/5357 co-relation queries the response was YES. [2024-10-15 00:04:46,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21342 conditions, 8324 events. 5411/8324 cut-off events. For 5267/5357 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 43113 event pairs, 1384 based on Foata normal form. 444/7458 useless extension candidates. Maximal degree in co-relation 21244. Up to 3314 conditions per place. [2024-10-15 00:04:46,612 INFO L140 encePairwiseOnDemand]: 54/59 looper letters, 337 selfloop transitions, 13 changer transitions 0/358 dead transitions. [2024-10-15 00:04:46,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 358 transitions, 2388 flow [2024-10-15 00:04:46,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-15 00:04:46,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-15 00:04:46,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 364 transitions. [2024-10-15 00:04:46,614 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6169491525423729 [2024-10-15 00:04:46,614 INFO L175 Difference]: Start difference. First operand has 109 places, 141 transitions, 914 flow. Second operand 10 states and 364 transitions. [2024-10-15 00:04:46,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 358 transitions, 2388 flow [2024-10-15 00:04:46,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 358 transitions, 2282 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-10-15 00:04:46,629 INFO L231 Difference]: Finished difference. Result has 112 places, 150 transitions, 882 flow [2024-10-15 00:04:46,629 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=808, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=882, PETRI_PLACES=112, PETRI_TRANSITIONS=150} [2024-10-15 00:04:46,630 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 55 predicate places. [2024-10-15 00:04:46,630 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 150 transitions, 882 flow [2024-10-15 00:04:46,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 24.416666666666668) internal successors, (293), 12 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:46,630 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:04:46,630 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:04:46,646 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-15 00:04:46,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-15 00:04:46,831 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-15 00:04:46,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:04:46,832 INFO L85 PathProgramCache]: Analyzing trace with hash 2120174461, now seen corresponding path program 2 times [2024-10-15 00:04:46,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:04:46,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399057099] [2024-10-15 00:04:46,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:46,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:04:46,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:47,076 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-15 00:04:47,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:04:47,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399057099] [2024-10-15 00:04:47,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399057099] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:04:47,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142317506] [2024-10-15 00:04:47,078 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 00:04:47,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:04:47,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:04:47,082 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:04:47,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-15 00:04:47,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-15 00:04:47,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 00:04:47,165 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-15 00:04:47,167 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:04:47,209 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-15 00:04:47,210 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:04:47,246 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-15 00:04:47,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142317506] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:04:47,246 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:04:47,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 2, 2] total 11 [2024-10-15 00:04:47,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173078614] [2024-10-15 00:04:47,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:04:47,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-15 00:04:47,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:04:47,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-15 00:04:47,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-10-15 00:04:47,339 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 59 [2024-10-15 00:04:47,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 150 transitions, 882 flow. Second operand has 12 states, 12 states have (on average 25.666666666666668) internal successors, (308), 12 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:47,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:04:47,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 59 [2024-10-15 00:04:47,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:04:48,079 INFO L124 PetriNetUnfolderBase]: 3932/6095 cut-off events. [2024-10-15 00:04:48,079 INFO L125 PetriNetUnfolderBase]: For 6534/6652 co-relation queries the response was YES. [2024-10-15 00:04:48,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17586 conditions, 6095 events. 3932/6095 cut-off events. For 6534/6652 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 29512 event pairs, 1453 based on Foata normal form. 148/5550 useless extension candidates. Maximal degree in co-relation 17487. Up to 2780 conditions per place. [2024-10-15 00:04:48,123 INFO L140 encePairwiseOnDemand]: 41/59 looper letters, 81 selfloop transitions, 46 changer transitions 82/217 dead transitions. [2024-10-15 00:04:48,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 217 transitions, 1525 flow [2024-10-15 00:04:48,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-15 00:04:48,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-15 00:04:48,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 439 transitions. [2024-10-15 00:04:48,125 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5314769975786925 [2024-10-15 00:04:48,125 INFO L175 Difference]: Start difference. First operand has 112 places, 150 transitions, 882 flow. Second operand 14 states and 439 transitions. [2024-10-15 00:04:48,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 217 transitions, 1525 flow [2024-10-15 00:04:48,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 217 transitions, 1497 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-10-15 00:04:48,151 INFO L231 Difference]: Finished difference. Result has 121 places, 121 transitions, 800 flow [2024-10-15 00:04:48,155 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=851, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=800, PETRI_PLACES=121, PETRI_TRANSITIONS=121} [2024-10-15 00:04:48,156 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 64 predicate places. [2024-10-15 00:04:48,157 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 121 transitions, 800 flow [2024-10-15 00:04:48,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 25.666666666666668) internal successors, (308), 12 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:48,157 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:04:48,157 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:04:48,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-15 00:04:48,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-15 00:04:48,358 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-15 00:04:48,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:04:48,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1222106111, now seen corresponding path program 1 times [2024-10-15 00:04:48,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:04:48,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053737210] [2024-10-15 00:04:48,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:48,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:04:48,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:48,544 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-15 00:04:48,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:04:48,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053737210] [2024-10-15 00:04:48,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053737210] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:04:48,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394137093] [2024-10-15 00:04:48,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:48,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:04:48,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:04:48,550 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:04:48,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-15 00:04:48,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:48,663 INFO L255 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-15 00:04:48,664 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:04:48,697 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-15 00:04:48,697 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:04:48,736 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-15 00:04:48,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394137093] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:04:48,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:04:48,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-15 00:04:48,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304104548] [2024-10-15 00:04:48,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:04:48,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-15 00:04:48,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:04:48,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-15 00:04:48,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-15 00:04:48,746 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 59 [2024-10-15 00:04:48,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 121 transitions, 800 flow. Second operand has 12 states, 12 states have (on average 24.25) internal successors, (291), 12 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:48,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:04:48,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 59 [2024-10-15 00:04:48,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:04:49,564 INFO L124 PetriNetUnfolderBase]: 5081/7799 cut-off events. [2024-10-15 00:04:49,565 INFO L125 PetriNetUnfolderBase]: For 10530/10530 co-relation queries the response was YES. [2024-10-15 00:04:49,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23188 conditions, 7799 events. 5081/7799 cut-off events. For 10530/10530 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 41009 event pairs, 935 based on Foata normal form. 438/7655 useless extension candidates. Maximal degree in co-relation 23087. Up to 2354 conditions per place. [2024-10-15 00:04:49,614 INFO L140 encePairwiseOnDemand]: 55/59 looper letters, 327 selfloop transitions, 9 changer transitions 0/343 dead transitions. [2024-10-15 00:04:49,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 343 transitions, 2552 flow [2024-10-15 00:04:49,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-15 00:04:49,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-15 00:04:49,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 366 transitions. [2024-10-15 00:04:49,619 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6203389830508474 [2024-10-15 00:04:49,619 INFO L175 Difference]: Start difference. First operand has 121 places, 121 transitions, 800 flow. Second operand 10 states and 366 transitions. [2024-10-15 00:04:49,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 343 transitions, 2552 flow [2024-10-15 00:04:49,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 343 transitions, 2164 flow, removed 27 selfloop flow, removed 11 redundant places. [2024-10-15 00:04:49,654 INFO L231 Difference]: Finished difference. Result has 102 places, 127 transitions, 702 flow [2024-10-15 00:04:49,654 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=644, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=702, PETRI_PLACES=102, PETRI_TRANSITIONS=127} [2024-10-15 00:04:49,658 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 45 predicate places. [2024-10-15 00:04:49,659 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 127 transitions, 702 flow [2024-10-15 00:04:49,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 24.25) internal successors, (291), 12 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:49,659 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:04:49,659 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:04:49,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-15 00:04:49,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:04:49,860 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-15 00:04:49,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:04:49,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1157355752, now seen corresponding path program 2 times [2024-10-15 00:04:49,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:04:49,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262895370] [2024-10-15 00:04:49,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:49,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:04:49,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:50,007 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-10-15 00:04:50,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:04:50,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262895370] [2024-10-15 00:04:50,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262895370] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:04:50,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309135340] [2024-10-15 00:04:50,008 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 00:04:50,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:04:50,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:04:50,010 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:04:50,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-15 00:04:50,106 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-15 00:04:50,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 00:04:50,108 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-15 00:04:50,109 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:04:50,159 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-10-15 00:04:50,159 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:04:50,204 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-10-15 00:04:50,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309135340] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:04:50,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:04:50,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 2, 2] total 9 [2024-10-15 00:04:50,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843418295] [2024-10-15 00:04:50,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:04:50,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-15 00:04:50,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:04:50,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-15 00:04:50,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-10-15 00:04:50,281 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 59 [2024-10-15 00:04:50,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 127 transitions, 702 flow. Second operand has 11 states, 11 states have (on average 25.636363636363637) internal successors, (282), 11 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:50,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:04:50,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 59 [2024-10-15 00:04:50,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:04:52,095 INFO L124 PetriNetUnfolderBase]: 9301/14670 cut-off events. [2024-10-15 00:04:52,096 INFO L125 PetriNetUnfolderBase]: For 19872/19872 co-relation queries the response was YES. [2024-10-15 00:04:52,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42125 conditions, 14670 events. 9301/14670 cut-off events. For 19872/19872 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 86462 event pairs, 3478 based on Foata normal form. 292/12571 useless extension candidates. Maximal degree in co-relation 42033. Up to 3440 conditions per place. [2024-10-15 00:04:52,133 INFO L140 encePairwiseOnDemand]: 43/59 looper letters, 0 selfloop transitions, 0 changer transitions 219/219 dead transitions. [2024-10-15 00:04:52,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 219 transitions, 1498 flow [2024-10-15 00:04:52,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-15 00:04:52,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-15 00:04:52,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 470 transitions. [2024-10-15 00:04:52,136 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4978813559322034 [2024-10-15 00:04:52,136 INFO L175 Difference]: Start difference. First operand has 102 places, 127 transitions, 702 flow. Second operand 16 states and 470 transitions. [2024-10-15 00:04:52,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 219 transitions, 1498 flow [2024-10-15 00:04:52,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 219 transitions, 1458 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-10-15 00:04:52,227 INFO L231 Difference]: Finished difference. Result has 110 places, 0 transitions, 0 flow [2024-10-15 00:04:52,227 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=672, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=0, PETRI_PLACES=110, PETRI_TRANSITIONS=0} [2024-10-15 00:04:52,228 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 53 predicate places. [2024-10-15 00:04:52,228 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 0 transitions, 0 flow [2024-10-15 00:04:52,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 25.636363636363637) internal successors, (282), 11 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:52,235 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 23 remaining) [2024-10-15 00:04:52,235 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 23 remaining) [2024-10-15 00:04:52,235 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 23 remaining) [2024-10-15 00:04:52,236 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 23 remaining) [2024-10-15 00:04:52,236 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 23 remaining) [2024-10-15 00:04:52,236 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 23 remaining) [2024-10-15 00:04:52,236 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 23 remaining) [2024-10-15 00:04:52,236 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 23 remaining) [2024-10-15 00:04:52,238 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 23 remaining) [2024-10-15 00:04:52,238 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 23 remaining) [2024-10-15 00:04:52,238 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 23 remaining) [2024-10-15 00:04:52,239 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 23 remaining) [2024-10-15 00:04:52,239 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 23 remaining) [2024-10-15 00:04:52,239 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 23 remaining) [2024-10-15 00:04:52,239 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 23 remaining) [2024-10-15 00:04:52,239 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 23 remaining) [2024-10-15 00:04:52,239 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 23 remaining) [2024-10-15 00:04:52,239 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 23 remaining) [2024-10-15 00:04:52,239 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 23 remaining) [2024-10-15 00:04:52,239 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 23 remaining) [2024-10-15 00:04:52,239 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 23 remaining) [2024-10-15 00:04:52,240 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 23 remaining) [2024-10-15 00:04:52,240 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 23 remaining) [2024-10-15 00:04:52,254 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-15 00:04:52,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:04:52,441 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:04:52,449 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-15 00:04:52,449 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-15 00:04:52,457 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 12:04:52 BasicIcfg [2024-10-15 00:04:52,457 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-15 00:04:52,458 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-15 00:04:52,458 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-15 00:04:52,458 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-15 00:04:52,458 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:04:32" (3/4) ... [2024-10-15 00:04:52,459 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-15 00:04:52,463 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-10-15 00:04:52,463 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-10-15 00:04:52,463 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-10-15 00:04:52,478 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 199 nodes and edges [2024-10-15 00:04:52,478 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 40 nodes and edges [2024-10-15 00:04:52,478 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-10-15 00:04:52,479 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-10-15 00:04:52,581 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-15 00:04:52,582 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-15 00:04:52,582 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-15 00:04:52,582 INFO L158 Benchmark]: Toolchain (without parser) took 21434.01ms. Allocated memory was 184.5MB in the beginning and 1.1GB in the end (delta: 920.6MB). Free memory was 114.7MB in the beginning and 917.5MB in the end (delta: -802.8MB). Peak memory consumption was 119.6MB. Max. memory is 16.1GB. [2024-10-15 00:04:52,582 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 184.5MB. Free memory is still 143.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-15 00:04:52,582 INFO L158 Benchmark]: CACSL2BoogieTranslator took 432.75ms. Allocated memory is still 184.5MB. Free memory was 114.5MB in the beginning and 154.7MB in the end (delta: -40.2MB). Peak memory consumption was 14.4MB. Max. memory is 16.1GB. [2024-10-15 00:04:52,583 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.68ms. Allocated memory is still 184.5MB. Free memory was 154.7MB in the beginning and 152.5MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-15 00:04:52,583 INFO L158 Benchmark]: Boogie Preprocessor took 50.51ms. Allocated memory is still 184.5MB. Free memory was 152.5MB in the beginning and 150.2MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-15 00:04:52,583 INFO L158 Benchmark]: RCFGBuilder took 721.85ms. Allocated memory is still 184.5MB. Free memory was 149.3MB in the beginning and 80.1MB in the end (delta: 69.2MB). Peak memory consumption was 69.2MB. Max. memory is 16.1GB. [2024-10-15 00:04:52,583 INFO L158 Benchmark]: TraceAbstraction took 20059.62ms. Allocated memory was 184.5MB in the beginning and 1.1GB in the end (delta: 920.6MB). Free memory was 79.2MB in the beginning and 924.7MB in the end (delta: -845.5MB). Peak memory consumption was 516.2MB. Max. memory is 16.1GB. [2024-10-15 00:04:52,583 INFO L158 Benchmark]: Witness Printer took 124.15ms. Allocated memory is still 1.1GB. Free memory was 924.7MB in the beginning and 917.5MB in the end (delta: 7.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-10-15 00:04:52,584 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 184.5MB. Free memory is still 143.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 432.75ms. Allocated memory is still 184.5MB. Free memory was 114.5MB in the beginning and 154.7MB in the end (delta: -40.2MB). Peak memory consumption was 14.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.68ms. Allocated memory is still 184.5MB. Free memory was 154.7MB in the beginning and 152.5MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 50.51ms. Allocated memory is still 184.5MB. Free memory was 152.5MB in the beginning and 150.2MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 721.85ms. Allocated memory is still 184.5MB. Free memory was 149.3MB in the beginning and 80.1MB in the end (delta: 69.2MB). Peak memory consumption was 69.2MB. Max. memory is 16.1GB. * TraceAbstraction took 20059.62ms. Allocated memory was 184.5MB in the beginning and 1.1GB in the end (delta: 920.6MB). Free memory was 79.2MB in the beginning and 924.7MB in the end (delta: -845.5MB). Peak memory consumption was 516.2MB. Max. memory is 16.1GB. * Witness Printer took 124.15ms. Allocated memory is still 1.1GB. Free memory was 924.7MB in the beginning and 917.5MB in the end (delta: 7.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 66]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 66]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 77 locations, 23 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 19.9s, OverallIterations: 20, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 12.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2543 SdHoareTripleChecker+Valid, 4.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2390 mSDsluCounter, 2656 SdHoareTripleChecker+Invalid, 3.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2538 mSDsCounter, 667 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7828 IncrementalHoareTripleChecker+Invalid, 8495 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 667 mSolverCounterUnsat, 118 mSDtfsCounter, 7828 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 756 GetRequests, 484 SyntacticMatches, 6 SemanticMatches, 266 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1101 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1350occurred in iteration=10, InterpolantAutomatonStates: 195, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 688 NumberOfCodeBlocks, 595 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 915 ConstructedInterpolants, 0 QuantifiedInterpolants, 2465 SizeOfPredicates, 42 NumberOfNonLiveVariables, 1976 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 41 InterpolantComputations, 10 PerfectInterpolantSequences, 649/820 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-15 00:04:52,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE