./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/chl-chromosome-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4a390ef5 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/chl-chromosome-trans.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f36f5593156fc25b34b4c706b0d898a2d66ee8bab5f6d91cd69ff9cf3c129193 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 23:37:29,512 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 23:37:29,555 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-24 23:37:29,560 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 23:37:29,562 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 23:37:29,578 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 23:37:29,579 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 23:37:29,579 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 23:37:29,579 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 23:37:29,580 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 23:37:29,580 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 23:37:29,580 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 23:37:29,581 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 23:37:29,581 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 23:37:29,581 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 23:37:29,581 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 23:37:29,582 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 23:37:29,582 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 23:37:29,582 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 23:37:29,582 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 23:37:29,583 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 23:37:29,586 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 23:37:29,586 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 23:37:29,586 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 23:37:29,587 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 23:37:29,587 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-24 23:37:29,587 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 23:37:29,587 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 23:37:29,587 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 23:37:29,587 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 23:37:29,587 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 23:37:29,588 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 23:37:29,588 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 23:37:29,588 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 23:37:29,588 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:37:29,588 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 23:37:29,588 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 23:37:29,588 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 23:37:29,589 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 23:37:29,589 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 23:37:29,589 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 23:37:29,590 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 23:37:29,590 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 23:37:29,590 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 23:37:29,590 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f36f5593156fc25b34b4c706b0d898a2d66ee8bab5f6d91cd69ff9cf3c129193 [2024-10-24 23:37:29,779 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 23:37:29,796 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 23:37:29,798 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 23:37:29,799 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 23:37:29,800 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 23:37:29,801 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c [2024-10-24 23:37:31,053 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 23:37:31,196 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 23:37:31,196 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c [2024-10-24 23:37:31,201 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9359d959/958f1f8f27b9463693b0e651da8f2981/FLAG4ef427f13 [2024-10-24 23:37:31,211 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9359d959/958f1f8f27b9463693b0e651da8f2981 [2024-10-24 23:37:31,213 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 23:37:31,213 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 23:37:31,214 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 23:37:31,214 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 23:37:31,219 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 23:37:31,219 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:37:31" (1/1) ... [2024-10-24 23:37:31,220 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@768996b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:31, skipping insertion in model container [2024-10-24 23:37:31,220 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:37:31" (1/1) ... [2024-10-24 23:37:31,236 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 23:37:31,435 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:37:31,443 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 23:37:31,497 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:37:31,511 INFO L204 MainTranslator]: Completed translation [2024-10-24 23:37:31,511 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:31 WrapperNode [2024-10-24 23:37:31,511 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 23:37:31,512 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 23:37:31,512 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 23:37:31,512 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 23:37:31,517 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:31" (1/1) ... [2024-10-24 23:37:31,523 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:31" (1/1) ... [2024-10-24 23:37:31,546 INFO L138 Inliner]: procedures = 25, calls = 32, calls flagged for inlining = 17, calls inlined = 25, statements flattened = 323 [2024-10-24 23:37:31,547 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 23:37:31,548 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 23:37:31,548 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 23:37:31,548 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 23:37:31,556 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:31" (1/1) ... [2024-10-24 23:37:31,556 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:31" (1/1) ... [2024-10-24 23:37:31,562 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:31" (1/1) ... [2024-10-24 23:37:31,578 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [2, 9]. 82 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-10-24 23:37:31,582 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:31" (1/1) ... [2024-10-24 23:37:31,582 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:31" (1/1) ... [2024-10-24 23:37:31,592 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:31" (1/1) ... [2024-10-24 23:37:31,596 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:31" (1/1) ... [2024-10-24 23:37:31,598 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:31" (1/1) ... [2024-10-24 23:37:31,599 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:31" (1/1) ... [2024-10-24 23:37:31,601 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 23:37:31,602 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 23:37:31,602 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 23:37:31,602 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 23:37:31,603 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:31" (1/1) ... [2024-10-24 23:37:31,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:37:31,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:37:31,629 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) [2024-10-24 23:37:31,631 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 [2024-10-24 23:37:31,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 23:37:31,662 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-24 23:37:31,662 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-24 23:37:31,662 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-24 23:37:31,662 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-24 23:37:31,663 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-24 23:37:31,663 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-24 23:37:31,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 23:37:31,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 23:37:31,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 23:37:31,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 23:37:31,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 23:37:31,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 23:37:31,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 23:37:31,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 23:37:31,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 23:37:31,665 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 23:37:31,751 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 23:37:31,752 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 23:37:32,201 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 23:37:32,201 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 23:37:32,495 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 23:37:32,495 INFO L314 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-24 23:37:32,495 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:37:32 BoogieIcfgContainer [2024-10-24 23:37:32,496 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 23:37:32,497 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 23:37:32,497 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 23:37:32,500 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 23:37:32,500 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:37:31" (1/3) ... [2024-10-24 23:37:32,500 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8f97262 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:37:32, skipping insertion in model container [2024-10-24 23:37:32,500 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:31" (2/3) ... [2024-10-24 23:37:32,500 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8f97262 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:37:32, skipping insertion in model container [2024-10-24 23:37:32,501 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:37:32" (3/3) ... [2024-10-24 23:37:32,501 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-trans.wvr.c [2024-10-24 23:37:32,515 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 23:37:32,515 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2024-10-24 23:37:32,515 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 23:37:32,567 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-24 23:37:32,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 107 transitions, 235 flow [2024-10-24 23:37:32,629 INFO L124 PetriNetUnfolderBase]: 12/104 cut-off events. [2024-10-24 23:37:32,630 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-24 23:37:32,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 104 events. 12/104 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 384 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 84. Up to 2 conditions per place. [2024-10-24 23:37:32,634 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 107 transitions, 235 flow [2024-10-24 23:37:32,637 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 102 transitions, 219 flow [2024-10-24 23:37:32,644 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 23:37:32,649 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;@751e9549, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 23:37:32,649 INFO L334 AbstractCegarLoop]: Starting to check reachability of 57 error locations. [2024-10-24 23:37:32,652 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 23:37:32,652 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-24 23:37:32,652 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 23:37:32,652 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:32,652 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-24 23:37:32,653 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-24 23:37:32,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:32,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1000784, now seen corresponding path program 1 times [2024-10-24 23:37:32,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:32,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010829551] [2024-10-24 23:37:32,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:32,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:32,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:32,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:32,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:32,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010829551] [2024-10-24 23:37:32,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010829551] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:37:32,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:37:32,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:37:32,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096517926] [2024-10-24 23:37:32,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:37:32,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:37:32,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:37:32,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:37:32,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:37:32,925 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 107 [2024-10-24 23:37:32,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 102 transitions, 219 flow. Second operand has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 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) [2024-10-24 23:37:32,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:37:32,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 107 [2024-10-24 23:37:32,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:37:33,751 INFO L124 PetriNetUnfolderBase]: 4133/8574 cut-off events. [2024-10-24 23:37:33,751 INFO L125 PetriNetUnfolderBase]: For 250/250 co-relation queries the response was YES. [2024-10-24 23:37:33,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14289 conditions, 8574 events. 4133/8574 cut-off events. For 250/250 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 75082 event pairs, 2732 based on Foata normal form. 3/6721 useless extension candidates. Maximal degree in co-relation 13590. Up to 5489 conditions per place. [2024-10-24 23:37:33,800 INFO L140 encePairwiseOnDemand]: 91/107 looper letters, 50 selfloop transitions, 10 changer transitions 0/111 dead transitions. [2024-10-24 23:37:33,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 111 transitions, 357 flow [2024-10-24 23:37:33,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:37:33,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:37:33,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 282 transitions. [2024-10-24 23:37:33,810 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6588785046728972 [2024-10-24 23:37:33,811 INFO L175 Difference]: Start difference. First operand has 100 places, 102 transitions, 219 flow. Second operand 4 states and 282 transitions. [2024-10-24 23:37:33,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 111 transitions, 357 flow [2024-10-24 23:37:33,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 111 transitions, 348 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-24 23:37:33,818 INFO L231 Difference]: Finished difference. Result has 101 places, 111 transitions, 298 flow [2024-10-24 23:37:33,819 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=298, PETRI_PLACES=101, PETRI_TRANSITIONS=111} [2024-10-24 23:37:33,822 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 1 predicate places. [2024-10-24 23:37:33,822 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 111 transitions, 298 flow [2024-10-24 23:37:33,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 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) [2024-10-24 23:37:33,823 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:33,823 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-24 23:37:33,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 23:37:33,823 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-24 23:37:33,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:33,824 INFO L85 PathProgramCache]: Analyzing trace with hash -249427598, now seen corresponding path program 1 times [2024-10-24 23:37:33,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:33,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84726410] [2024-10-24 23:37:33,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:33,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:33,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:33,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:33,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:33,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84726410] [2024-10-24 23:37:33,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84726410] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:37:33,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880737526] [2024-10-24 23:37:33,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:33,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:37:33,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:37:33,946 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) [2024-10-24 23:37:33,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 23:37:34,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:34,032 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:37:34,036 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:37:34,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:34,081 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:37:34,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880737526] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:37:34,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:37:34,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-24 23:37:34,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828035837] [2024-10-24 23:37:34,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:37:34,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 23:37:34,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:37:34,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 23:37:34,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-24 23:37:34,106 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 107 [2024-10-24 23:37:34,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 111 transitions, 298 flow. Second operand has 6 states, 6 states have (on average 54.833333333333336) internal successors, (329), 6 states have internal predecessors, (329), 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) [2024-10-24 23:37:34,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:37:34,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 107 [2024-10-24 23:37:34,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:37:34,826 INFO L124 PetriNetUnfolderBase]: 4133/8571 cut-off events. [2024-10-24 23:37:34,826 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2024-10-24 23:37:34,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14235 conditions, 8571 events. 4133/8571 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 75080 event pairs, 2732 based on Foata normal form. 3/6723 useless extension candidates. Maximal degree in co-relation 14162. Up to 5474 conditions per place. [2024-10-24 23:37:34,868 INFO L140 encePairwiseOnDemand]: 94/107 looper letters, 40 selfloop transitions, 17 changer transitions 0/108 dead transitions. [2024-10-24 23:37:34,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 108 transitions, 400 flow [2024-10-24 23:37:34,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 23:37:34,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 23:37:34,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 384 transitions. [2024-10-24 23:37:34,871 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5981308411214953 [2024-10-24 23:37:34,871 INFO L175 Difference]: Start difference. First operand has 101 places, 111 transitions, 298 flow. Second operand 6 states and 384 transitions. [2024-10-24 23:37:34,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 108 transitions, 400 flow [2024-10-24 23:37:34,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 108 transitions, 400 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 23:37:34,874 INFO L231 Difference]: Finished difference. Result has 103 places, 108 transitions, 320 flow [2024-10-24 23:37:34,874 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=320, PETRI_PLACES=103, PETRI_TRANSITIONS=108} [2024-10-24 23:37:34,874 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 3 predicate places. [2024-10-24 23:37:34,875 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 108 transitions, 320 flow [2024-10-24 23:37:34,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.833333333333336) internal successors, (329), 6 states have internal predecessors, (329), 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) [2024-10-24 23:37:34,875 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:34,875 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-24 23:37:34,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-24 23:37:35,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:37:35,080 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-24 23:37:35,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:35,081 INFO L85 PathProgramCache]: Analyzing trace with hash 857680047, now seen corresponding path program 1 times [2024-10-24 23:37:35,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:35,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100137695] [2024-10-24 23:37:35,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:35,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:35,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:35,149 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:35,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:35,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100137695] [2024-10-24 23:37:35,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100137695] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:37:35,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190556634] [2024-10-24 23:37:35,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:35,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:37:35,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:37:35,152 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) [2024-10-24 23:37:35,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 23:37:35,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:35,213 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:37:35,213 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:37:35,234 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:35,235 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:37:35,269 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:35,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190556634] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:37:35,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:37:35,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-24 23:37:35,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223773298] [2024-10-24 23:37:35,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:37:35,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 23:37:35,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:37:35,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 23:37:35,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-24 23:37:35,303 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 107 [2024-10-24 23:37:35,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 108 transitions, 320 flow. Second operand has 12 states, 12 states have (on average 55.083333333333336) internal successors, (661), 12 states have internal predecessors, (661), 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) [2024-10-24 23:37:35,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:37:35,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 107 [2024-10-24 23:37:35,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:37:36,093 INFO L124 PetriNetUnfolderBase]: 4142/8607 cut-off events. [2024-10-24 23:37:36,094 INFO L125 PetriNetUnfolderBase]: For 137/137 co-relation queries the response was YES. [2024-10-24 23:37:36,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14376 conditions, 8607 events. 4142/8607 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 75478 event pairs, 2732 based on Foata normal form. 9/6765 useless extension candidates. Maximal degree in co-relation 14164. Up to 5489 conditions per place. [2024-10-24 23:37:36,122 INFO L140 encePairwiseOnDemand]: 94/107 looper letters, 47 selfloop transitions, 37 changer transitions 0/135 dead transitions. [2024-10-24 23:37:36,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 135 transitions, 662 flow [2024-10-24 23:37:36,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 23:37:36,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 23:37:36,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 633 transitions. [2024-10-24 23:37:36,125 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.591588785046729 [2024-10-24 23:37:36,125 INFO L175 Difference]: Start difference. First operand has 103 places, 108 transitions, 320 flow. Second operand 10 states and 633 transitions. [2024-10-24 23:37:36,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 135 transitions, 662 flow [2024-10-24 23:37:36,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 135 transitions, 579 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-10-24 23:37:36,132 INFO L231 Difference]: Finished difference. Result has 110 places, 135 transitions, 535 flow [2024-10-24 23:37:36,132 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=535, PETRI_PLACES=110, PETRI_TRANSITIONS=135} [2024-10-24 23:37:36,133 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 10 predicate places. [2024-10-24 23:37:36,133 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 135 transitions, 535 flow [2024-10-24 23:37:36,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 55.083333333333336) internal successors, (661), 12 states have internal predecessors, (661), 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) [2024-10-24 23:37:36,134 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:36,134 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:37:36,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-24 23:37:36,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-10-24 23:37:36,339 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-24 23:37:36,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:36,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1214103751, now seen corresponding path program 1 times [2024-10-24 23:37:36,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:36,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946436944] [2024-10-24 23:37:36,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:36,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:36,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:36,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:36,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:36,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946436944] [2024-10-24 23:37:36,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946436944] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:37:36,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:37:36,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:37:36,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390106735] [2024-10-24 23:37:36,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:37:36,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:37:36,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:37:36,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:37:36,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:37:36,444 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 107 [2024-10-24 23:37:36,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 135 transitions, 535 flow. Second operand has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 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) [2024-10-24 23:37:36,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:37:36,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 107 [2024-10-24 23:37:36,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:37:37,380 INFO L124 PetriNetUnfolderBase]: 8073/14774 cut-off events. [2024-10-24 23:37:37,380 INFO L125 PetriNetUnfolderBase]: For 173/173 co-relation queries the response was YES. [2024-10-24 23:37:37,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25950 conditions, 14774 events. 8073/14774 cut-off events. For 173/173 co-relation queries the response was YES. Maximal size of possible extension queue 835. Compared 126510 event pairs, 2473 based on Foata normal form. 364/12263 useless extension candidates. Maximal degree in co-relation 25852. Up to 5062 conditions per place. [2024-10-24 23:37:37,455 INFO L140 encePairwiseOnDemand]: 99/107 looper letters, 131 selfloop transitions, 5 changer transitions 0/184 dead transitions. [2024-10-24 23:37:37,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 184 transitions, 911 flow [2024-10-24 23:37:37,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:37:37,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:37:37,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 319 transitions. [2024-10-24 23:37:37,457 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7453271028037384 [2024-10-24 23:37:37,458 INFO L175 Difference]: Start difference. First operand has 110 places, 135 transitions, 535 flow. Second operand 4 states and 319 transitions. [2024-10-24 23:37:37,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 184 transitions, 911 flow [2024-10-24 23:37:37,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 184 transitions, 874 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-10-24 23:37:37,464 INFO L231 Difference]: Finished difference. Result has 113 places, 137 transitions, 532 flow [2024-10-24 23:37:37,466 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=532, PETRI_PLACES=113, PETRI_TRANSITIONS=137} [2024-10-24 23:37:37,467 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 13 predicate places. [2024-10-24 23:37:37,467 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 137 transitions, 532 flow [2024-10-24 23:37:37,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 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) [2024-10-24 23:37:37,467 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:37,467 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:37:37,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 23:37:37,468 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-24 23:37:37,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:37,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1017488303, now seen corresponding path program 1 times [2024-10-24 23:37:37,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:37,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551147841] [2024-10-24 23:37:37,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:37,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:37,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:37,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:37,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:37,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551147841] [2024-10-24 23:37:37,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551147841] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:37:37,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:37:37,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:37:37,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211699607] [2024-10-24 23:37:37,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:37:37,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:37:37,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:37:37,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:37:37,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 23:37:37,525 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 107 [2024-10-24 23:37:37,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 137 transitions, 532 flow. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 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) [2024-10-24 23:37:37,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:37:37,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 107 [2024-10-24 23:37:37,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:37:38,335 INFO L124 PetriNetUnfolderBase]: 5184/10990 cut-off events. [2024-10-24 23:37:38,335 INFO L125 PetriNetUnfolderBase]: For 1932/2198 co-relation queries the response was YES. [2024-10-24 23:37:38,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19701 conditions, 10990 events. 5184/10990 cut-off events. For 1932/2198 co-relation queries the response was YES. Maximal size of possible extension queue 648. Compared 102048 event pairs, 3504 based on Foata normal form. 138/8944 useless extension candidates. Maximal degree in co-relation 19605. Up to 6912 conditions per place. [2024-10-24 23:37:38,389 INFO L140 encePairwiseOnDemand]: 100/107 looper letters, 68 selfloop transitions, 12 changer transitions 0/134 dead transitions. [2024-10-24 23:37:38,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 134 transitions, 679 flow [2024-10-24 23:37:38,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:37:38,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:37:38,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 234 transitions. [2024-10-24 23:37:38,391 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7289719626168224 [2024-10-24 23:37:38,391 INFO L175 Difference]: Start difference. First operand has 113 places, 137 transitions, 532 flow. Second operand 3 states and 234 transitions. [2024-10-24 23:37:38,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 134 transitions, 679 flow [2024-10-24 23:37:38,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 134 transitions, 667 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:37:38,409 INFO L231 Difference]: Finished difference. Result has 114 places, 134 transitions, 531 flow [2024-10-24 23:37:38,409 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=531, PETRI_PLACES=114, PETRI_TRANSITIONS=134} [2024-10-24 23:37:38,410 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 14 predicate places. [2024-10-24 23:37:38,410 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 134 transitions, 531 flow [2024-10-24 23:37:38,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 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) [2024-10-24 23:37:38,411 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:38,411 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-24 23:37:38,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 23:37:38,411 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-24 23:37:38,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:38,411 INFO L85 PathProgramCache]: Analyzing trace with hash -2117255407, now seen corresponding path program 2 times [2024-10-24 23:37:38,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:38,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207832747] [2024-10-24 23:37:38,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:38,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:38,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:38,542 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:38,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:38,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207832747] [2024-10-24 23:37:38,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207832747] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:37:38,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181920045] [2024-10-24 23:37:38,543 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 23:37:38,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:37:38,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:37:38,546 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) [2024-10-24 23:37:38,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 23:37:38,604 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 23:37:38,604 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 23:37:38,605 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:37:38,605 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:37:38,632 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-24 23:37:38,632 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:37:38,663 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-24 23:37:38,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181920045] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:37:38,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:37:38,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 13 [2024-10-24 23:37:38,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814767453] [2024-10-24 23:37:38,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:37:38,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-24 23:37:38,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:37:38,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-24 23:37:38,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-10-24 23:37:38,707 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 107 [2024-10-24 23:37:38,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 134 transitions, 531 flow. Second operand has 15 states, 15 states have (on average 55.333333333333336) internal successors, (830), 15 states have internal predecessors, (830), 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) [2024-10-24 23:37:38,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:37:38,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 107 [2024-10-24 23:37:38,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:37:39,574 INFO L124 PetriNetUnfolderBase]: 5187/10993 cut-off events. [2024-10-24 23:37:39,574 INFO L125 PetriNetUnfolderBase]: For 1944/2210 co-relation queries the response was YES. [2024-10-24 23:37:39,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19713 conditions, 10993 events. 5187/10993 cut-off events. For 1944/2210 co-relation queries the response was YES. Maximal size of possible extension queue 648. Compared 102031 event pairs, 3504 based on Foata normal form. 138/8948 useless extension candidates. Maximal degree in co-relation 19608. Up to 6886 conditions per place. [2024-10-24 23:37:39,626 INFO L140 encePairwiseOnDemand]: 94/107 looper letters, 37 selfloop transitions, 49 changer transitions 0/137 dead transitions. [2024-10-24 23:37:39,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 137 transitions, 710 flow [2024-10-24 23:37:39,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-24 23:37:39,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-24 23:37:39,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 789 transitions. [2024-10-24 23:37:39,628 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5672178289000719 [2024-10-24 23:37:39,628 INFO L175 Difference]: Start difference. First operand has 114 places, 134 transitions, 531 flow. Second operand 13 states and 789 transitions. [2024-10-24 23:37:39,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 137 transitions, 710 flow [2024-10-24 23:37:39,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 137 transitions, 652 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-10-24 23:37:39,646 INFO L231 Difference]: Finished difference. Result has 117 places, 137 transitions, 578 flow [2024-10-24 23:37:39,646 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=578, PETRI_PLACES=117, PETRI_TRANSITIONS=137} [2024-10-24 23:37:39,647 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 17 predicate places. [2024-10-24 23:37:39,647 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 137 transitions, 578 flow [2024-10-24 23:37:39,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 55.333333333333336) internal successors, (830), 15 states have internal predecessors, (830), 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) [2024-10-24 23:37:39,648 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:39,648 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:37:39,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-24 23:37:39,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:37:39,849 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-24 23:37:39,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:39,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1237586700, now seen corresponding path program 1 times [2024-10-24 23:37:39,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:39,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226149319] [2024-10-24 23:37:39,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:39,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:39,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:39,941 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:37:39,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:39,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226149319] [2024-10-24 23:37:39,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226149319] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:37:39,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147286885] [2024-10-24 23:37:39,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:39,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:37:39,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:37:39,944 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) [2024-10-24 23:37:39,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 23:37:40,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:40,025 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 23:37:40,026 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:37:40,061 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:37:40,061 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:37:40,086 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:37:40,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147286885] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:37:40,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:37:40,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-24 23:37:40,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196680328] [2024-10-24 23:37:40,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:37:40,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 23:37:40,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:37:40,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 23:37:40,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-10-24 23:37:40,122 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 107 [2024-10-24 23:37:40,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 137 transitions, 578 flow. Second operand has 11 states, 11 states have (on average 55.90909090909091) internal successors, (615), 11 states have internal predecessors, (615), 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) [2024-10-24 23:37:40,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:37:40,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 107 [2024-10-24 23:37:40,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:37:40,778 INFO L124 PetriNetUnfolderBase]: 5181/10987 cut-off events. [2024-10-24 23:37:40,779 INFO L125 PetriNetUnfolderBase]: For 1941/2207 co-relation queries the response was YES. [2024-10-24 23:37:40,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19705 conditions, 10987 events. 5181/10987 cut-off events. For 1941/2207 co-relation queries the response was YES. Maximal size of possible extension queue 648. Compared 101875 event pairs, 3504 based on Foata normal form. 135/8932 useless extension candidates. Maximal degree in co-relation 19481. Up to 6893 conditions per place. [2024-10-24 23:37:40,829 INFO L140 encePairwiseOnDemand]: 97/107 looper letters, 43 selfloop transitions, 37 changer transitions 0/131 dead transitions. [2024-10-24 23:37:40,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 131 transitions, 696 flow [2024-10-24 23:37:40,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 23:37:40,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-24 23:37:40,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 444 transitions. [2024-10-24 23:37:40,831 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5927903871829105 [2024-10-24 23:37:40,831 INFO L175 Difference]: Start difference. First operand has 117 places, 137 transitions, 578 flow. Second operand 7 states and 444 transitions. [2024-10-24 23:37:40,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 131 transitions, 696 flow [2024-10-24 23:37:40,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 131 transitions, 540 flow, removed 11 selfloop flow, removed 12 redundant places. [2024-10-24 23:37:40,852 INFO L231 Difference]: Finished difference. Result has 111 places, 131 transitions, 454 flow [2024-10-24 23:37:40,852 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=454, PETRI_PLACES=111, PETRI_TRANSITIONS=131} [2024-10-24 23:37:40,853 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 11 predicate places. [2024-10-24 23:37:40,853 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 131 transitions, 454 flow [2024-10-24 23:37:40,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 55.90909090909091) internal successors, (615), 11 states have internal predecessors, (615), 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) [2024-10-24 23:37:40,853 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:40,853 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:37:40,866 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-24 23:37:41,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:37:41,054 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-24 23:37:41,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:41,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1669756116, now seen corresponding path program 2 times [2024-10-24 23:37:41,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:41,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096288093] [2024-10-24 23:37:41,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:41,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:41,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:41,237 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-24 23:37:41,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:41,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096288093] [2024-10-24 23:37:41,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096288093] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:37:41,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858327484] [2024-10-24 23:37:41,238 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 23:37:41,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:37:41,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:37:41,242 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) [2024-10-24 23:37:41,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 23:37:41,339 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 23:37:41,339 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 23:37:41,340 INFO L255 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-24 23:37:41,342 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:37:41,438 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-24 23:37:41,440 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:37:41,495 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-24 23:37:41,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858327484] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:37:41,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:37:41,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-10-24 23:37:41,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569816] [2024-10-24 23:37:41,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:37:41,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-24 23:37:41,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:37:41,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-24 23:37:41,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2024-10-24 23:37:41,537 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 107 [2024-10-24 23:37:41,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 131 transitions, 454 flow. Second operand has 18 states, 18 states have (on average 55.611111111111114) internal successors, (1001), 18 states have internal predecessors, (1001), 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) [2024-10-24 23:37:41,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:37:41,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 107 [2024-10-24 23:37:41,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:37:42,627 INFO L124 PetriNetUnfolderBase]: 5175/10981 cut-off events. [2024-10-24 23:37:42,627 INFO L125 PetriNetUnfolderBase]: For 1905/2171 co-relation queries the response was YES. [2024-10-24 23:37:42,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19645 conditions, 10981 events. 5175/10981 cut-off events. For 1905/2171 co-relation queries the response was YES. Maximal size of possible extension queue 649. Compared 101702 event pairs, 3504 based on Foata normal form. 137/8935 useless extension candidates. Maximal degree in co-relation 19483. Up to 6885 conditions per place. [2024-10-24 23:37:42,685 INFO L140 encePairwiseOnDemand]: 97/107 looper letters, 41 selfloop transitions, 33 changer transitions 0/125 dead transitions. [2024-10-24 23:37:42,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 125 transitions, 572 flow [2024-10-24 23:37:42,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 23:37:42,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-24 23:37:42,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 672 transitions. [2024-10-24 23:37:42,688 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5709430756159728 [2024-10-24 23:37:42,688 INFO L175 Difference]: Start difference. First operand has 111 places, 131 transitions, 454 flow. Second operand 11 states and 672 transitions. [2024-10-24 23:37:42,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 125 transitions, 572 flow [2024-10-24 23:37:42,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 125 transitions, 506 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-24 23:37:42,705 INFO L231 Difference]: Finished difference. Result has 115 places, 125 transitions, 424 flow [2024-10-24 23:37:42,705 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=424, PETRI_PLACES=115, PETRI_TRANSITIONS=125} [2024-10-24 23:37:42,705 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 15 predicate places. [2024-10-24 23:37:42,705 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 125 transitions, 424 flow [2024-10-24 23:37:42,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 55.611111111111114) internal successors, (1001), 18 states have internal predecessors, (1001), 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) [2024-10-24 23:37:42,707 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:42,707 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:37:42,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-24 23:37:42,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:37:42,912 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-24 23:37:42,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:42,912 INFO L85 PathProgramCache]: Analyzing trace with hash -242379596, now seen corresponding path program 3 times [2024-10-24 23:37:42,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:42,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130126900] [2024-10-24 23:37:42,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:42,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:42,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:44,191 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-10-24 23:37:44,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:44,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130126900] [2024-10-24 23:37:44,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130126900] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:37:44,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141248719] [2024-10-24 23:37:44,192 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-24 23:37:44,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:37:44,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:37:44,195 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) [2024-10-24 23:37:44,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 23:37:44,346 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-10-24 23:37:44,346 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 23:37:44,348 INFO L255 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-10-24 23:37:44,351 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:37:44,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-24 23:37:44,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-24 23:37:44,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-10-24 23:37:44,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 23:37:44,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-10-24 23:37:44,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 23:37:44,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-10-24 23:37:44,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 23:37:44,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-10-24 23:37:44,759 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-24 23:37:44,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-24 23:37:44,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-24 23:37:44,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-24 23:37:44,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-24 23:37:44,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-24 23:37:44,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-24 23:37:44,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-24 23:37:44,869 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 9 proven. 52 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-10-24 23:37:44,869 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:37:44,919 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_222 (Array Int Int))) (< (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_222) c_~o_2~0.base) c_~o_2~0.offset) 9223372039002259456)) is different from false [2024-10-24 23:39:03,057 INFO L349 Elim1Store]: treesize reduction 233, result has 21.0 percent of original size [2024-10-24 23:39:03,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 51 treesize of output 72 [2024-10-24 23:39:03,071 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 23:39:03,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2024-10-24 23:39:03,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2024-10-24 23:39:03,138 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 13 proven. 20 refuted. 2 times theorem prover too weak. 57 trivial. 13 not checked. [2024-10-24 23:39:03,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141248719] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:39:03,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:39:03,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 15] total 43 [2024-10-24 23:39:03,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079905610] [2024-10-24 23:39:03,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:39:03,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-10-24 23:39:03,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:39:03,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-10-24 23:39:03,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=1548, Unknown=22, NotChecked=82, Total=1892 [2024-10-24 23:39:03,174 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 107 [2024-10-24 23:39:03,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 125 transitions, 424 flow. Second operand has 44 states, 44 states have (on average 43.97727272727273) internal successors, (1935), 44 states have internal predecessors, (1935), 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) [2024-10-24 23:39:03,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:39:03,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 107 [2024-10-24 23:39:03,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:39:07,418 INFO L124 PetriNetUnfolderBase]: 26152/42055 cut-off events. [2024-10-24 23:39:07,419 INFO L125 PetriNetUnfolderBase]: For 4016/4153 co-relation queries the response was YES. [2024-10-24 23:39:07,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83404 conditions, 42055 events. 26152/42055 cut-off events. For 4016/4153 co-relation queries the response was YES. Maximal size of possible extension queue 1589. Compared 342412 event pairs, 7495 based on Foata normal form. 137/36675 useless extension candidates. Maximal degree in co-relation 83227. Up to 12701 conditions per place. [2024-10-24 23:39:07,578 INFO L140 encePairwiseOnDemand]: 89/107 looper letters, 173 selfloop transitions, 47 changer transitions 0/259 dead transitions. [2024-10-24 23:39:07,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 259 transitions, 1174 flow [2024-10-24 23:39:07,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-24 23:39:07,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-10-24 23:39:07,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1349 transitions. [2024-10-24 23:39:07,581 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4669435790931118 [2024-10-24 23:39:07,581 INFO L175 Difference]: Start difference. First operand has 115 places, 125 transitions, 424 flow. Second operand 27 states and 1349 transitions. [2024-10-24 23:39:07,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 259 transitions, 1174 flow [2024-10-24 23:39:07,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 259 transitions, 1108 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-10-24 23:39:07,599 INFO L231 Difference]: Finished difference. Result has 134 places, 133 transitions, 514 flow [2024-10-24 23:39:07,599 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=514, PETRI_PLACES=134, PETRI_TRANSITIONS=133} [2024-10-24 23:39:07,600 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 34 predicate places. [2024-10-24 23:39:07,600 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 133 transitions, 514 flow [2024-10-24 23:39:07,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 43.97727272727273) internal successors, (1935), 44 states have internal predecessors, (1935), 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) [2024-10-24 23:39:07,601 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:39:07,601 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:39:07,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-24 23:39:07,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:39:07,802 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-24 23:39:07,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:39:07,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1602321776, now seen corresponding path program 1 times [2024-10-24 23:39:07,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:39:07,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083615159] [2024-10-24 23:39:07,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:39:07,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:39:07,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:39:07,880 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-10-24 23:39:07,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:39:07,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083615159] [2024-10-24 23:39:07,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083615159] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:39:07,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:39:07,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:39:07,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382173890] [2024-10-24 23:39:07,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:39:07,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:39:07,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:39:07,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:39:07,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:39:07,900 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 107 [2024-10-24 23:39:07,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 133 transitions, 514 flow. Second operand has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 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) [2024-10-24 23:39:07,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:39:07,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 107 [2024-10-24 23:39:07,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:39:10,424 INFO L124 PetriNetUnfolderBase]: 20705/37690 cut-off events. [2024-10-24 23:39:10,424 INFO L125 PetriNetUnfolderBase]: For 22649/23986 co-relation queries the response was YES. [2024-10-24 23:39:10,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79406 conditions, 37690 events. 20705/37690 cut-off events. For 22649/23986 co-relation queries the response was YES. Maximal size of possible extension queue 1392. Compared 351753 event pairs, 7143 based on Foata normal form. 1542/33309 useless extension candidates. Maximal degree in co-relation 44513. Up to 13371 conditions per place. [2024-10-24 23:39:10,592 INFO L140 encePairwiseOnDemand]: 99/107 looper letters, 147 selfloop transitions, 5 changer transitions 0/198 dead transitions. [2024-10-24 23:39:10,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 198 transitions, 1102 flow [2024-10-24 23:39:10,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:39:10,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:39:10,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 317 transitions. [2024-10-24 23:39:10,594 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7406542056074766 [2024-10-24 23:39:10,594 INFO L175 Difference]: Start difference. First operand has 134 places, 133 transitions, 514 flow. Second operand 4 states and 317 transitions. [2024-10-24 23:39:10,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 198 transitions, 1102 flow [2024-10-24 23:39:10,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 198 transitions, 1025 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-10-24 23:39:10,633 INFO L231 Difference]: Finished difference. Result has 128 places, 135 transitions, 475 flow [2024-10-24 23:39:10,634 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=475, PETRI_PLACES=128, PETRI_TRANSITIONS=135} [2024-10-24 23:39:10,635 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 28 predicate places. [2024-10-24 23:39:10,635 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 135 transitions, 475 flow [2024-10-24 23:39:10,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 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) [2024-10-24 23:39:10,635 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:39:10,636 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:39:10,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 23:39:10,636 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-24 23:39:10,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:39:10,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1076136424, now seen corresponding path program 1 times [2024-10-24 23:39:10,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:39:10,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115281741] [2024-10-24 23:39:10,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:39:10,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:39:10,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat