./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread/stack-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread/stack-1.i -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 a5e93db72222dd521789305cbf7823ac91f269c62c97020d54f95f5ba14d3fd2 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 13:47:29,044 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 13:47:29,096 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 13:47:29,101 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 13:47:29,102 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 13:47:29,134 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 13:47:29,135 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 13:47:29,135 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 13:47:29,135 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 13:47:29,136 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 13:47:29,137 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 13:47:29,137 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 13:47:29,138 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 13:47:29,138 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 13:47:29,138 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 13:47:29,138 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 13:47:29,139 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 13:47:29,141 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 13:47:29,141 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 13:47:29,142 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 13:47:29,142 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 13:47:29,142 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 13:47:29,142 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 13:47:29,142 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 13:47:29,150 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 13:47:29,150 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 13:47:29,150 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 13:47:29,150 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 13:47:29,150 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 13:47:29,150 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 13:47:29,151 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 13:47:29,151 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 13:47:29,151 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 13:47:29,151 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 13:47:29,151 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 13:47:29,151 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 13:47:29,151 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 13:47:29,152 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 13:47:29,152 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 13:47:29,152 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 13:47:29,152 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 13:47:29,153 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 13:47:29,154 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 13:47:29,154 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 13:47:29,154 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5e93db72222dd521789305cbf7823ac91f269c62c97020d54f95f5ba14d3fd2 [2024-11-19 13:47:29,366 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 13:47:29,386 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 13:47:29,389 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 13:47:29,390 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 13:47:29,390 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 13:47:29,391 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/stack-1.i [2024-11-19 13:47:30,653 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 13:47:30,869 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 13:47:30,869 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stack-1.i [2024-11-19 13:47:30,884 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b82619a97/8541790bd8c64df0bd8f5326d49100b6/FLAG43f3c3163 [2024-11-19 13:47:30,894 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b82619a97/8541790bd8c64df0bd8f5326d49100b6 [2024-11-19 13:47:30,896 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 13:47:30,897 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 13:47:30,900 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 13:47:30,901 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 13:47:30,906 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 13:47:30,906 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:47:30" (1/1) ... [2024-11-19 13:47:30,907 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b1da82a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:30, skipping insertion in model container [2024-11-19 13:47:30,907 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:47:30" (1/1) ... [2024-11-19 13:47:30,944 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 13:47:31,280 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 13:47:31,294 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 13:47:31,338 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 13:47:31,393 INFO L204 MainTranslator]: Completed translation [2024-11-19 13:47:31,394 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:31 WrapperNode [2024-11-19 13:47:31,394 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 13:47:31,395 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 13:47:31,395 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 13:47:31,396 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 13:47:31,401 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:31" (1/1) ... [2024-11-19 13:47:31,421 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:31" (1/1) ... [2024-11-19 13:47:31,448 INFO L138 Inliner]: procedures = 277, calls = 36, calls flagged for inlining = 12, calls inlined = 13, statements flattened = 162 [2024-11-19 13:47:31,450 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 13:47:31,450 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 13:47:31,450 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 13:47:31,451 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 13:47:31,460 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:31" (1/1) ... [2024-11-19 13:47:31,460 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:31" (1/1) ... [2024-11-19 13:47:31,466 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:31" (1/1) ... [2024-11-19 13:47:31,488 INFO L175 MemorySlicer]: Split 14 memory accesses to 3 slices as follows [2, 5, 7]. 50 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5]. The 1 writes are split as follows [0, 0, 1]. [2024-11-19 13:47:31,492 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:31" (1/1) ... [2024-11-19 13:47:31,493 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:31" (1/1) ... [2024-11-19 13:47:31,500 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:31" (1/1) ... [2024-11-19 13:47:31,504 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:31" (1/1) ... [2024-11-19 13:47:31,506 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:31" (1/1) ... [2024-11-19 13:47:31,511 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:31" (1/1) ... [2024-11-19 13:47:31,514 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 13:47:31,516 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 13:47:31,516 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 13:47:31,516 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 13:47:31,517 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:31" (1/1) ... [2024-11-19 13:47:31,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 13:47:31,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:47:31,548 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 13:47:31,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 13:47:31,592 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-19 13:47:31,592 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-19 13:47:31,592 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-19 13:47:31,592 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-19 13:47:31,593 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-19 13:47:31,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 13:47:31,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 13:47:31,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-19 13:47:31,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 13:47:31,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 13:47:31,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-19 13:47:31,593 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-19 13:47:31,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 13:47:31,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 13:47:31,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 13:47:31,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 13:47:31,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 13:47:31,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 13:47:31,596 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 13:47:31,714 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 13:47:31,716 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 13:47:31,933 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 13:47:31,934 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 13:47:32,102 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 13:47:32,102 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-19 13:47:32,103 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:47:32 BoogieIcfgContainer [2024-11-19 13:47:32,103 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 13:47:32,105 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 13:47:32,106 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 13:47:32,109 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 13:47:32,109 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:47:30" (1/3) ... [2024-11-19 13:47:32,110 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46bba981 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:47:32, skipping insertion in model container [2024-11-19 13:47:32,110 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:31" (2/3) ... [2024-11-19 13:47:32,111 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46bba981 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:47:32, skipping insertion in model container [2024-11-19 13:47:32,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:47:32" (3/3) ... [2024-11-19 13:47:32,113 INFO L112 eAbstractionObserver]: Analyzing ICFG stack-1.i [2024-11-19 13:47:32,127 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 13:47:32,127 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-19 13:47:32,128 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 13:47:32,171 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-19 13:47:32,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 48 transitions, 110 flow [2024-11-19 13:47:32,225 INFO L124 PetriNetUnfolderBase]: 5/46 cut-off events. [2024-11-19 13:47:32,226 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 13:47:32,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 46 events. 5/46 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 128 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2024-11-19 13:47:32,229 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 48 transitions, 110 flow [2024-11-19 13:47:32,233 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 44 transitions, 97 flow [2024-11-19 13:47:32,243 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 13:47:32,249 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;@492fa58b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 13:47:32,250 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-19 13:47:32,257 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 13:47:32,258 INFO L124 PetriNetUnfolderBase]: 0/17 cut-off events. [2024-11-19 13:47:32,258 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-19 13:47:32,258 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:32,259 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:32,259 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:47:32,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:32,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1698815092, now seen corresponding path program 1 times [2024-11-19 13:47:32,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:32,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126911225] [2024-11-19 13:47:32,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:32,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:32,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:32,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:32,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:32,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126911225] [2024-11-19 13:47:32,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126911225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:32,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:47:32,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:47:32,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545448354] [2024-11-19 13:47:32,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:32,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:47:32,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:32,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:47:32,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:47:32,627 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-11-19 13:47:32,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 97 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:32,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:32,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-11-19 13:47:32,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:32,962 INFO L124 PetriNetUnfolderBase]: 730/1442 cut-off events. [2024-11-19 13:47:32,962 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2024-11-19 13:47:32,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2676 conditions, 1442 events. 730/1442 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 7590 event pairs, 224 based on Foata normal form. 40/1333 useless extension candidates. Maximal degree in co-relation 2569. Up to 692 conditions per place. [2024-11-19 13:47:32,978 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 58 selfloop transitions, 5 changer transitions 0/77 dead transitions. [2024-11-19 13:47:32,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 77 transitions, 298 flow [2024-11-19 13:47:32,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:47:32,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:47:32,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2024-11-19 13:47:32,989 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-11-19 13:47:32,991 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 97 flow. Second operand 4 states and 132 transitions. [2024-11-19 13:47:32,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 77 transitions, 298 flow [2024-11-19 13:47:32,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 77 transitions, 289 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 13:47:32,999 INFO L231 Difference]: Finished difference. Result has 48 places, 47 transitions, 128 flow [2024-11-19 13:47:33,002 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=128, PETRI_PLACES=48, PETRI_TRANSITIONS=47} [2024-11-19 13:47:33,006 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 2 predicate places. [2024-11-19 13:47:33,007 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 47 transitions, 128 flow [2024-11-19 13:47:33,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:33,008 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:33,008 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:33,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 13:47:33,009 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:47:33,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:33,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1142909908, now seen corresponding path program 1 times [2024-11-19 13:47:33,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:33,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929543110] [2024-11-19 13:47:33,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:33,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:33,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:33,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:33,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:33,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929543110] [2024-11-19 13:47:33,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929543110] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:33,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:47:33,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:47:33,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111911856] [2024-11-19 13:47:33,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:33,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:47:33,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:33,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:47:33,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:47:33,136 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-11-19 13:47:33,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 47 transitions, 128 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:33,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:33,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-11-19 13:47:33,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:33,411 INFO L124 PetriNetUnfolderBase]: 1180/2391 cut-off events. [2024-11-19 13:47:33,411 INFO L125 PetriNetUnfolderBase]: For 338/338 co-relation queries the response was YES. [2024-11-19 13:47:33,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4818 conditions, 2391 events. 1180/2391 cut-off events. For 338/338 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 13839 event pairs, 613 based on Foata normal form. 74/2301 useless extension candidates. Maximal degree in co-relation 4166. Up to 1299 conditions per place. [2024-11-19 13:47:33,423 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 71 selfloop transitions, 3 changer transitions 0/88 dead transitions. [2024-11-19 13:47:33,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 88 transitions, 399 flow [2024-11-19 13:47:33,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:47:33,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:47:33,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2024-11-19 13:47:33,426 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-11-19 13:47:33,426 INFO L175 Difference]: Start difference. First operand has 48 places, 47 transitions, 128 flow. Second operand 4 states and 132 transitions. [2024-11-19 13:47:33,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 88 transitions, 399 flow [2024-11-19 13:47:33,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 88 transitions, 399 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 13:47:33,429 INFO L231 Difference]: Finished difference. Result has 53 places, 49 transitions, 152 flow [2024-11-19 13:47:33,430 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=152, PETRI_PLACES=53, PETRI_TRANSITIONS=49} [2024-11-19 13:47:33,431 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 7 predicate places. [2024-11-19 13:47:33,431 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 152 flow [2024-11-19 13:47:33,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:33,433 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:33,433 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:33,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 13:47:33,434 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:47:33,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:33,435 INFO L85 PathProgramCache]: Analyzing trace with hash 108896876, now seen corresponding path program 1 times [2024-11-19 13:47:33,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:33,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161494822] [2024-11-19 13:47:33,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:33,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:33,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:33,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:33,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:33,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161494822] [2024-11-19 13:47:33,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161494822] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:33,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:47:33,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:47:33,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407548321] [2024-11-19 13:47:33,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:33,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:47:33,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:33,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:47:33,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:47:33,551 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-11-19 13:47:33,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:33,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:33,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-11-19 13:47:33,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:33,861 INFO L124 PetriNetUnfolderBase]: 1703/3326 cut-off events. [2024-11-19 13:47:33,861 INFO L125 PetriNetUnfolderBase]: For 993/1035 co-relation queries the response was YES. [2024-11-19 13:47:33,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7360 conditions, 3326 events. 1703/3326 cut-off events. For 993/1035 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 21159 event pairs, 837 based on Foata normal form. 82/3289 useless extension candidates. Maximal degree in co-relation 5256. Up to 1936 conditions per place. [2024-11-19 13:47:33,882 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 72 selfloop transitions, 3 changer transitions 0/89 dead transitions. [2024-11-19 13:47:33,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 89 transitions, 439 flow [2024-11-19 13:47:33,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:47:33,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:47:33,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2024-11-19 13:47:33,885 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6927083333333334 [2024-11-19 13:47:33,886 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 152 flow. Second operand 4 states and 133 transitions. [2024-11-19 13:47:33,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 89 transitions, 439 flow [2024-11-19 13:47:33,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 89 transitions, 433 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 13:47:33,893 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 174 flow [2024-11-19 13:47:33,893 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2024-11-19 13:47:33,894 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 11 predicate places. [2024-11-19 13:47:33,895 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 174 flow [2024-11-19 13:47:33,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:33,895 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:33,895 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:33,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 13:47:33,896 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:47:33,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:33,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1398652797, now seen corresponding path program 1 times [2024-11-19 13:47:33,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:33,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428842032] [2024-11-19 13:47:33,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:33,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:33,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:34,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:34,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:34,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428842032] [2024-11-19 13:47:34,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428842032] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:34,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:47:34,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:47:34,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318041957] [2024-11-19 13:47:34,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:34,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 13:47:34,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:34,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 13:47:34,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 13:47:34,013 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-11-19 13:47:34,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:34,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:34,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-11-19 13:47:34,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:34,194 INFO L124 PetriNetUnfolderBase]: 898/2001 cut-off events. [2024-11-19 13:47:34,195 INFO L125 PetriNetUnfolderBase]: For 983/1079 co-relation queries the response was YES. [2024-11-19 13:47:34,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4745 conditions, 2001 events. 898/2001 cut-off events. For 983/1079 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 11991 event pairs, 285 based on Foata normal form. 76/2025 useless extension candidates. Maximal degree in co-relation 3692. Up to 946 conditions per place. [2024-11-19 13:47:34,207 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 46 selfloop transitions, 4 changer transitions 0/66 dead transitions. [2024-11-19 13:47:34,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 66 transitions, 334 flow [2024-11-19 13:47:34,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 13:47:34,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 13:47:34,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2024-11-19 13:47:34,209 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-19 13:47:34,210 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 174 flow. Second operand 3 states and 96 transitions. [2024-11-19 13:47:34,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 66 transitions, 334 flow [2024-11-19 13:47:34,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 66 transitions, 328 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-19 13:47:34,215 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 173 flow [2024-11-19 13:47:34,215 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=173, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2024-11-19 13:47:34,216 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 12 predicate places. [2024-11-19 13:47:34,216 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 173 flow [2024-11-19 13:47:34,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:34,216 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:34,216 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:34,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 13:47:34,216 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:47:34,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:34,217 INFO L85 PathProgramCache]: Analyzing trace with hash -962841024, now seen corresponding path program 1 times [2024-11-19 13:47:34,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:34,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869586402] [2024-11-19 13:47:34,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:34,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:34,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:34,303 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:34,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:34,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869586402] [2024-11-19 13:47:34,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869586402] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:47:34,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393785434] [2024-11-19 13:47:34,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:34,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:47:34,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:47:34,306 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:47:34,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 13:47:34,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:34,385 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 13:47:34,389 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:47:34,457 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:34,457 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 13:47:34,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393785434] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:34,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 13:47:34,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-19 13:47:34,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129261222] [2024-11-19 13:47:34,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:34,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 13:47:34,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:34,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 13:47:34,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 13:47:34,468 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-19 13:47:34,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 173 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:34,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:34,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-19 13:47:34,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:34,758 INFO L124 PetriNetUnfolderBase]: 931/2009 cut-off events. [2024-11-19 13:47:34,758 INFO L125 PetriNetUnfolderBase]: For 1022/1128 co-relation queries the response was YES. [2024-11-19 13:47:34,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4977 conditions, 2009 events. 931/2009 cut-off events. For 1022/1128 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 11484 event pairs, 189 based on Foata normal form. 70/2022 useless extension candidates. Maximal degree in co-relation 2701. Up to 735 conditions per place. [2024-11-19 13:47:34,770 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 87 selfloop transitions, 9 changer transitions 0/109 dead transitions. [2024-11-19 13:47:34,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 109 transitions, 587 flow [2024-11-19 13:47:34,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 13:47:34,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 13:47:34,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 188 transitions. [2024-11-19 13:47:34,774 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5595238095238095 [2024-11-19 13:47:34,774 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 173 flow. Second operand 7 states and 188 transitions. [2024-11-19 13:47:34,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 109 transitions, 587 flow [2024-11-19 13:47:34,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 109 transitions, 577 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 13:47:34,778 INFO L231 Difference]: Finished difference. Result has 66 places, 54 transitions, 229 flow [2024-11-19 13:47:34,779 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=229, PETRI_PLACES=66, PETRI_TRANSITIONS=54} [2024-11-19 13:47:34,780 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 20 predicate places. [2024-11-19 13:47:34,782 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 54 transitions, 229 flow [2024-11-19 13:47:34,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:34,783 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:34,783 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:34,798 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 13:47:34,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:47:34,984 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:47:34,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:34,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1142264494, now seen corresponding path program 1 times [2024-11-19 13:47:34,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:34,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386905220] [2024-11-19 13:47:34,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:34,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:34,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:35,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:35,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:35,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386905220] [2024-11-19 13:47:35,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386905220] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:35,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:47:35,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:47:35,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072456466] [2024-11-19 13:47:35,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:35,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:47:35,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:35,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:47:35,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:47:35,033 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-19 13:47:35,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 54 transitions, 229 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:35,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:35,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-19 13:47:35,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:35,327 INFO L124 PetriNetUnfolderBase]: 1173/2608 cut-off events. [2024-11-19 13:47:35,327 INFO L125 PetriNetUnfolderBase]: For 2099/2217 co-relation queries the response was YES. [2024-11-19 13:47:35,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6746 conditions, 2608 events. 1173/2608 cut-off events. For 2099/2217 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 16508 event pairs, 646 based on Foata normal form. 26/2627 useless extension candidates. Maximal degree in co-relation 5213. Up to 1363 conditions per place. [2024-11-19 13:47:35,343 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 63 selfloop transitions, 7 changer transitions 0/84 dead transitions. [2024-11-19 13:47:35,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 84 transitions, 494 flow [2024-11-19 13:47:35,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:47:35,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:47:35,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 115 transitions. [2024-11-19 13:47:35,345 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5989583333333334 [2024-11-19 13:47:35,345 INFO L175 Difference]: Start difference. First operand has 66 places, 54 transitions, 229 flow. Second operand 4 states and 115 transitions. [2024-11-19 13:47:35,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 84 transitions, 494 flow [2024-11-19 13:47:35,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 84 transitions, 486 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-19 13:47:35,350 INFO L231 Difference]: Finished difference. Result has 68 places, 56 transitions, 271 flow [2024-11-19 13:47:35,351 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=271, PETRI_PLACES=68, PETRI_TRANSITIONS=56} [2024-11-19 13:47:35,351 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 22 predicate places. [2024-11-19 13:47:35,351 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 56 transitions, 271 flow [2024-11-19 13:47:35,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:35,352 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:35,352 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:35,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 13:47:35,352 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:47:35,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:35,353 INFO L85 PathProgramCache]: Analyzing trace with hash 216699803, now seen corresponding path program 1 times [2024-11-19 13:47:35,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:35,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48259085] [2024-11-19 13:47:35,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:35,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:35,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:35,449 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:35,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:35,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48259085] [2024-11-19 13:47:35,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48259085] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:47:35,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157869299] [2024-11-19 13:47:35,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:35,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:47:35,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:47:35,452 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:47:35,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 13:47:35,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:35,535 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 13:47:35,536 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:47:35,576 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:35,577 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:47:35,633 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:35,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157869299] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:47:35,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:47:35,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-19 13:47:35,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110114456] [2024-11-19 13:47:35,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:47:35,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 13:47:35,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:35,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 13:47:35,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-19 13:47:35,649 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-19 13:47:35,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 56 transitions, 271 flow. Second operand has 12 states, 12 states have (on average 18.083333333333332) internal successors, (217), 12 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:35,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:35,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-19 13:47:35,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:36,442 INFO L124 PetriNetUnfolderBase]: 2547/5481 cut-off events. [2024-11-19 13:47:36,443 INFO L125 PetriNetUnfolderBase]: For 7148/7564 co-relation queries the response was YES. [2024-11-19 13:47:36,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14866 conditions, 5481 events. 2547/5481 cut-off events. For 7148/7564 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 35580 event pairs, 407 based on Foata normal form. 151/5625 useless extension candidates. Maximal degree in co-relation 7920. Up to 1167 conditions per place. [2024-11-19 13:47:36,483 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 191 selfloop transitions, 33 changer transitions 0/236 dead transitions. [2024-11-19 13:47:36,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 236 transitions, 1518 flow [2024-11-19 13:47:36,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-19 13:47:36,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-19 13:47:36,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 426 transitions. [2024-11-19 13:47:36,485 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5546875 [2024-11-19 13:47:36,486 INFO L175 Difference]: Start difference. First operand has 68 places, 56 transitions, 271 flow. Second operand 16 states and 426 transitions. [2024-11-19 13:47:36,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 236 transitions, 1518 flow [2024-11-19 13:47:36,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 236 transitions, 1506 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-19 13:47:36,496 INFO L231 Difference]: Finished difference. Result has 87 places, 86 transitions, 598 flow [2024-11-19 13:47:36,497 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=598, PETRI_PLACES=87, PETRI_TRANSITIONS=86} [2024-11-19 13:47:36,497 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 41 predicate places. [2024-11-19 13:47:36,497 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 86 transitions, 598 flow [2024-11-19 13:47:36,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.083333333333332) internal successors, (217), 12 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:36,498 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:36,498 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:36,512 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 13:47:36,698 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,SelfDestructingSolverStorable6 [2024-11-19 13:47:36,699 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:47:36,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:36,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1987919382, now seen corresponding path program 1 times [2024-11-19 13:47:36,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:36,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871440282] [2024-11-19 13:47:36,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:36,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:36,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:36,759 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:36,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:36,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871440282] [2024-11-19 13:47:36,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871440282] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:47:36,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807991365] [2024-11-19 13:47:36,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:36,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:47:36,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:47:36,766 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:47:36,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 13:47:36,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:36,837 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 13:47:36,838 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:47:36,871 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:36,871 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 13:47:36,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807991365] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:36,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 13:47:36,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-19 13:47:36,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931937300] [2024-11-19 13:47:36,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:36,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 13:47:36,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:36,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 13:47:36,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-19 13:47:36,878 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-19 13:47:36,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 86 transitions, 598 flow. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:36,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:36,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-19 13:47:36,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:37,630 INFO L124 PetriNetUnfolderBase]: 3236/6478 cut-off events. [2024-11-19 13:47:37,630 INFO L125 PetriNetUnfolderBase]: For 10477/10667 co-relation queries the response was YES. [2024-11-19 13:47:37,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18440 conditions, 6478 events. 3236/6478 cut-off events. For 10477/10667 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 41543 event pairs, 624 based on Foata normal form. 204/6476 useless extension candidates. Maximal degree in co-relation 15532. Up to 2915 conditions per place. [2024-11-19 13:47:37,681 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 125 selfloop transitions, 5 changer transitions 0/152 dead transitions. [2024-11-19 13:47:37,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 152 transitions, 1383 flow [2024-11-19 13:47:37,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:47:37,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:47:37,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-11-19 13:47:37,683 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-11-19 13:47:37,683 INFO L175 Difference]: Start difference. First operand has 87 places, 86 transitions, 598 flow. Second operand 4 states and 116 transitions. [2024-11-19 13:47:37,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 152 transitions, 1383 flow [2024-11-19 13:47:37,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 152 transitions, 1311 flow, removed 29 selfloop flow, removed 3 redundant places. [2024-11-19 13:47:37,699 INFO L231 Difference]: Finished difference. Result has 86 places, 85 transitions, 564 flow [2024-11-19 13:47:37,701 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=564, PETRI_PLACES=86, PETRI_TRANSITIONS=85} [2024-11-19 13:47:37,701 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 40 predicate places. [2024-11-19 13:47:37,702 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 85 transitions, 564 flow [2024-11-19 13:47:37,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:37,702 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:37,702 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:37,716 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 13:47:37,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:47:37,903 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:47:37,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:37,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1862909711, now seen corresponding path program 1 times [2024-11-19 13:47:37,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:37,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341973377] [2024-11-19 13:47:37,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:37,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:37,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:37,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:37,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:37,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341973377] [2024-11-19 13:47:37,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341973377] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:37,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:47:37,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 13:47:37,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41308330] [2024-11-19 13:47:37,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:37,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 13:47:37,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:37,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 13:47:37,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 13:47:37,993 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-19 13:47:37,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 85 transitions, 564 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:37,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:37,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-19 13:47:37,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:38,648 INFO L124 PetriNetUnfolderBase]: 2796/5813 cut-off events. [2024-11-19 13:47:38,649 INFO L125 PetriNetUnfolderBase]: For 11448/11785 co-relation queries the response was YES. [2024-11-19 13:47:38,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17402 conditions, 5813 events. 2796/5813 cut-off events. For 11448/11785 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 37220 event pairs, 564 based on Foata normal form. 39/5851 useless extension candidates. Maximal degree in co-relation 14507. Up to 3403 conditions per place. [2024-11-19 13:47:38,757 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 119 selfloop transitions, 13 changer transitions 0/142 dead transitions. [2024-11-19 13:47:38,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 142 transitions, 1115 flow [2024-11-19 13:47:38,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 13:47:38,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 13:47:38,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 163 transitions. [2024-11-19 13:47:38,758 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5659722222222222 [2024-11-19 13:47:38,759 INFO L175 Difference]: Start difference. First operand has 86 places, 85 transitions, 564 flow. Second operand 6 states and 163 transitions. [2024-11-19 13:47:38,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 142 transitions, 1115 flow [2024-11-19 13:47:38,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 142 transitions, 1075 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 13:47:38,776 INFO L231 Difference]: Finished difference. Result has 91 places, 90 transitions, 653 flow [2024-11-19 13:47:38,777 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=653, PETRI_PLACES=91, PETRI_TRANSITIONS=90} [2024-11-19 13:47:38,777 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 45 predicate places. [2024-11-19 13:47:38,777 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 90 transitions, 653 flow [2024-11-19 13:47:38,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:38,778 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:38,778 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:38,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 13:47:38,778 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:47:38,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:38,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1495958197, now seen corresponding path program 1 times [2024-11-19 13:47:38,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:38,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100896945] [2024-11-19 13:47:38,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:38,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:38,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:38,814 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 13:47:38,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:38,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100896945] [2024-11-19 13:47:38,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100896945] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:38,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:47:38,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:47:38,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992018428] [2024-11-19 13:47:38,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:38,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:47:38,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:38,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:47:38,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:47:38,821 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-19 13:47:38,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 90 transitions, 653 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:38,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:38,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-19 13:47:38,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:39,385 INFO L124 PetriNetUnfolderBase]: 3062/6446 cut-off events. [2024-11-19 13:47:39,386 INFO L125 PetriNetUnfolderBase]: For 11345/11483 co-relation queries the response was YES. [2024-11-19 13:47:39,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18211 conditions, 6446 events. 3062/6446 cut-off events. For 11345/11483 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 42720 event pairs, 581 based on Foata normal form. 0/6445 useless extension candidates. Maximal degree in co-relation 15403. Up to 2690 conditions per place. [2024-11-19 13:47:39,432 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 143 selfloop transitions, 6 changer transitions 0/172 dead transitions. [2024-11-19 13:47:39,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 172 transitions, 1615 flow [2024-11-19 13:47:39,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:47:39,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:47:39,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-11-19 13:47:39,434 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-11-19 13:47:39,434 INFO L175 Difference]: Start difference. First operand has 91 places, 90 transitions, 653 flow. Second operand 4 states and 116 transitions. [2024-11-19 13:47:39,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 172 transitions, 1615 flow [2024-11-19 13:47:39,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 172 transitions, 1605 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 13:47:39,453 INFO L231 Difference]: Finished difference. Result has 92 places, 90 transitions, 665 flow [2024-11-19 13:47:39,454 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=645, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=665, PETRI_PLACES=92, PETRI_TRANSITIONS=90} [2024-11-19 13:47:39,454 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 46 predicate places. [2024-11-19 13:47:39,454 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 90 transitions, 665 flow [2024-11-19 13:47:39,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:39,455 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:39,455 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:39,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 13:47:39,455 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:47:39,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:39,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1462794208, now seen corresponding path program 1 times [2024-11-19 13:47:39,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:39,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617235325] [2024-11-19 13:47:39,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:39,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:39,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:39,550 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:39,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:39,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617235325] [2024-11-19 13:47:39,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617235325] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:47:39,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592359895] [2024-11-19 13:47:39,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:39,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:47:39,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:47:39,556 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:47:39,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 13:47:39,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:39,639 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 13:47:39,641 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:47:39,681 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:39,681 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 13:47:39,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592359895] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:39,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 13:47:39,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-19 13:47:39,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729222977] [2024-11-19 13:47:39,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:39,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 13:47:39,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:39,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 13:47:39,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-19 13:47:39,692 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-19 13:47:39,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 90 transitions, 665 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:39,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:39,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-19 13:47:39,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:40,387 INFO L124 PetriNetUnfolderBase]: 3167/6166 cut-off events. [2024-11-19 13:47:40,388 INFO L125 PetriNetUnfolderBase]: For 14451/14463 co-relation queries the response was YES. [2024-11-19 13:47:40,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19479 conditions, 6166 events. 3167/6166 cut-off events. For 14451/14463 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 38726 event pairs, 544 based on Foata normal form. 178/6161 useless extension candidates. Maximal degree in co-relation 18617. Up to 3741 conditions per place. [2024-11-19 13:47:40,450 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 96 selfloop transitions, 5 changer transitions 0/123 dead transitions. [2024-11-19 13:47:40,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 123 transitions, 1087 flow [2024-11-19 13:47:40,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:47:40,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:47:40,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2024-11-19 13:47:40,453 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-19 13:47:40,453 INFO L175 Difference]: Start difference. First operand has 92 places, 90 transitions, 665 flow. Second operand 4 states and 112 transitions. [2024-11-19 13:47:40,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 123 transitions, 1087 flow [2024-11-19 13:47:40,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 123 transitions, 1065 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 13:47:40,485 INFO L231 Difference]: Finished difference. Result has 92 places, 89 transitions, 663 flow [2024-11-19 13:47:40,485 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=663, PETRI_PLACES=92, PETRI_TRANSITIONS=89} [2024-11-19 13:47:40,486 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 46 predicate places. [2024-11-19 13:47:40,486 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 89 transitions, 663 flow [2024-11-19 13:47:40,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:40,487 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:40,487 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-19 13:47:40,503 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 13:47:40,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:47:40,688 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:47:40,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:40,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1898020289, now seen corresponding path program 1 times [2024-11-19 13:47:40,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:40,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300971467] [2024-11-19 13:47:40,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:40,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:40,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:40,742 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 13:47:40,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:40,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300971467] [2024-11-19 13:47:40,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300971467] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:40,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:47:40,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:47:40,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364055929] [2024-11-19 13:47:40,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:40,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:47:40,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:40,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:47:40,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:47:40,752 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-19 13:47:40,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 89 transitions, 663 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:40,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:40,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-19 13:47:40,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:41,277 INFO L124 PetriNetUnfolderBase]: 2926/5852 cut-off events. [2024-11-19 13:47:41,277 INFO L125 PetriNetUnfolderBase]: For 12701/12726 co-relation queries the response was YES. [2024-11-19 13:47:41,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18203 conditions, 5852 events. 2926/5852 cut-off events. For 12701/12726 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 36757 event pairs, 615 based on Foata normal form. 178/6027 useless extension candidates. Maximal degree in co-relation 15480. Up to 2981 conditions per place. [2024-11-19 13:47:41,317 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 107 selfloop transitions, 6 changer transitions 0/135 dead transitions. [2024-11-19 13:47:41,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 135 transitions, 1215 flow [2024-11-19 13:47:41,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:47:41,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:47:41,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-11-19 13:47:41,318 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-11-19 13:47:41,319 INFO L175 Difference]: Start difference. First operand has 92 places, 89 transitions, 663 flow. Second operand 4 states and 116 transitions. [2024-11-19 13:47:41,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 135 transitions, 1215 flow [2024-11-19 13:47:41,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 135 transitions, 1205 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 13:47:41,344 INFO L231 Difference]: Finished difference. Result has 92 places, 89 transitions, 669 flow [2024-11-19 13:47:41,344 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=649, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=669, PETRI_PLACES=92, PETRI_TRANSITIONS=89} [2024-11-19 13:47:41,345 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 46 predicate places. [2024-11-19 13:47:41,345 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 89 transitions, 669 flow [2024-11-19 13:47:41,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:41,345 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:41,345 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:41,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 13:47:41,346 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:47:41,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:41,346 INFO L85 PathProgramCache]: Analyzing trace with hash 436987589, now seen corresponding path program 1 times [2024-11-19 13:47:41,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:41,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419902112] [2024-11-19 13:47:41,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:41,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:41,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:41,416 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:41,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:41,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419902112] [2024-11-19 13:47:41,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419902112] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:41,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:47:41,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 13:47:41,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186368953] [2024-11-19 13:47:41,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:41,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 13:47:41,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:41,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 13:47:41,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 13:47:41,432 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-19 13:47:41,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 89 transitions, 669 flow. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:41,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:41,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-19 13:47:41,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:42,030 INFO L124 PetriNetUnfolderBase]: 2862/5763 cut-off events. [2024-11-19 13:47:42,030 INFO L125 PetriNetUnfolderBase]: For 14686/14686 co-relation queries the response was YES. [2024-11-19 13:47:42,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18437 conditions, 5763 events. 2862/5763 cut-off events. For 14686/14686 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 36416 event pairs, 455 based on Foata normal form. 104/5862 useless extension candidates. Maximal degree in co-relation 15445. Up to 3054 conditions per place. [2024-11-19 13:47:42,061 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 85 selfloop transitions, 35 changer transitions 0/129 dead transitions. [2024-11-19 13:47:42,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 129 transitions, 1104 flow [2024-11-19 13:47:42,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 13:47:42,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 13:47:42,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-11-19 13:47:42,062 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2024-11-19 13:47:42,062 INFO L175 Difference]: Start difference. First operand has 92 places, 89 transitions, 669 flow. Second operand 7 states and 162 transitions. [2024-11-19 13:47:42,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 129 transitions, 1104 flow [2024-11-19 13:47:42,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 129 transitions, 1080 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-19 13:47:42,095 INFO L231 Difference]: Finished difference. Result has 93 places, 85 transitions, 752 flow [2024-11-19 13:47:42,095 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=593, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=752, PETRI_PLACES=93, PETRI_TRANSITIONS=85} [2024-11-19 13:47:42,096 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 47 predicate places. [2024-11-19 13:47:42,096 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 85 transitions, 752 flow [2024-11-19 13:47:42,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:42,096 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:42,096 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:42,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 13:47:42,096 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:47:42,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:42,097 INFO L85 PathProgramCache]: Analyzing trace with hash -2052643506, now seen corresponding path program 1 times [2024-11-19 13:47:42,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:42,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184463388] [2024-11-19 13:47:42,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:42,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:42,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:42,211 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:42,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:42,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184463388] [2024-11-19 13:47:42,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184463388] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:47:42,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828602725] [2024-11-19 13:47:42,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:42,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:47:42,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:47:42,215 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:47:42,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 13:47:42,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:42,323 INFO L255 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 13:47:42,324 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:47:42,383 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:42,383 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 13:47:42,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828602725] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:42,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 13:47:42,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2024-11-19 13:47:42,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710710169] [2024-11-19 13:47:42,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:42,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 13:47:42,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:42,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 13:47:42,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-19 13:47:42,400 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-19 13:47:42,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 85 transitions, 752 flow. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:42,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:42,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-19 13:47:42,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:42,991 INFO L124 PetriNetUnfolderBase]: 2819/5728 cut-off events. [2024-11-19 13:47:42,991 INFO L125 PetriNetUnfolderBase]: For 17968/17968 co-relation queries the response was YES. [2024-11-19 13:47:43,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18754 conditions, 5728 events. 2819/5728 cut-off events. For 17968/17968 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 36552 event pairs, 651 based on Foata normal form. 114/5837 useless extension candidates. Maximal degree in co-relation 16033. Up to 2849 conditions per place. [2024-11-19 13:47:43,031 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 87 selfloop transitions, 28 changer transitions 8/132 dead transitions. [2024-11-19 13:47:43,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 132 transitions, 1240 flow [2024-11-19 13:47:43,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 13:47:43,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 13:47:43,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-11-19 13:47:43,033 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2024-11-19 13:47:43,033 INFO L175 Difference]: Start difference. First operand has 93 places, 85 transitions, 752 flow. Second operand 7 states and 162 transitions. [2024-11-19 13:47:43,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 132 transitions, 1240 flow [2024-11-19 13:47:43,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 132 transitions, 1221 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-19 13:47:43,060 INFO L231 Difference]: Finished difference. Result has 98 places, 87 transitions, 874 flow [2024-11-19 13:47:43,060 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=733, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=874, PETRI_PLACES=98, PETRI_TRANSITIONS=87} [2024-11-19 13:47:43,060 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 52 predicate places. [2024-11-19 13:47:43,061 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 87 transitions, 874 flow [2024-11-19 13:47:43,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:43,061 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:43,061 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:43,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-19 13:47:43,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-19 13:47:43,266 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:47:43,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:43,266 INFO L85 PathProgramCache]: Analyzing trace with hash 783124300, now seen corresponding path program 2 times [2024-11-19 13:47:43,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:43,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668818983] [2024-11-19 13:47:43,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 13:47:43,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:43,288 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 13:47:43,289 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 13:47:43,430 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 13:47:43,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:43,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668818983] [2024-11-19 13:47:43,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668818983] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:47:43,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688763439] [2024-11-19 13:47:43,431 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 13:47:43,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:47:43,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:47:43,433 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:47:43,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 13:47:43,533 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 13:47:43,533 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 13:47:43,535 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-19 13:47:43,536 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:47:43,590 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-19 13:47:43,591 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:47:43,679 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-19 13:47:43,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688763439] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:47:43,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:47:43,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2024-11-19 13:47:43,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083868251] [2024-11-19 13:47:43,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:47:43,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 13:47:43,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:43,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 13:47:43,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-11-19 13:47:43,711 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-19 13:47:43,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 87 transitions, 874 flow. Second operand has 14 states, 14 states have (on average 17.142857142857142) internal successors, (240), 14 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:43,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:43,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-19 13:47:43,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:44,521 INFO L124 PetriNetUnfolderBase]: 3024/6197 cut-off events. [2024-11-19 13:47:44,522 INFO L125 PetriNetUnfolderBase]: For 24906/24906 co-relation queries the response was YES. [2024-11-19 13:47:44,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20886 conditions, 6197 events. 3024/6197 cut-off events. For 24906/24906 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 39319 event pairs, 483 based on Foata normal form. 68/6260 useless extension candidates. Maximal degree in co-relation 18500. Up to 1421 conditions per place. [2024-11-19 13:47:44,566 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 185 selfloop transitions, 52 changer transitions 0/246 dead transitions. [2024-11-19 13:47:44,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 246 transitions, 2267 flow [2024-11-19 13:47:44,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 13:47:44,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-19 13:47:44,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 359 transitions. [2024-11-19 13:47:44,569 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4986111111111111 [2024-11-19 13:47:44,569 INFO L175 Difference]: Start difference. First operand has 98 places, 87 transitions, 874 flow. Second operand 15 states and 359 transitions. [2024-11-19 13:47:44,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 246 transitions, 2267 flow [2024-11-19 13:47:44,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 246 transitions, 2250 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-11-19 13:47:44,603 INFO L231 Difference]: Finished difference. Result has 115 places, 108 transitions, 1344 flow [2024-11-19 13:47:44,603 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=833, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1344, PETRI_PLACES=115, PETRI_TRANSITIONS=108} [2024-11-19 13:47:44,604 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 69 predicate places. [2024-11-19 13:47:44,604 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 108 transitions, 1344 flow [2024-11-19 13:47:44,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.142857142857142) internal successors, (240), 14 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:44,604 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:44,604 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1] [2024-11-19 13:47:44,617 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 13:47:44,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-19 13:47:44,809 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:47:44,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:44,809 INFO L85 PathProgramCache]: Analyzing trace with hash -998448409, now seen corresponding path program 2 times [2024-11-19 13:47:44,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:44,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378391929] [2024-11-19 13:47:44,810 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 13:47:44,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:44,829 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 13:47:44,830 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 13:47:45,040 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:45,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:45,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378391929] [2024-11-19 13:47:45,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378391929] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:47:45,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212678585] [2024-11-19 13:47:45,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 13:47:45,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:47:45,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:47:45,044 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:47:45,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 13:47:45,158 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 13:47:45,158 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 13:47:45,159 INFO L255 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-19 13:47:45,161 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:47:45,244 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:45,244 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:47:45,383 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:45,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212678585] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:47:45,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:47:45,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-11-19 13:47:45,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894832736] [2024-11-19 13:47:45,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:47:45,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-19 13:47:45,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:45,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-19 13:47:45,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-11-19 13:47:45,398 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-19 13:47:45,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 108 transitions, 1344 flow. Second operand has 24 states, 24 states have (on average 18.541666666666668) internal successors, (445), 24 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:45,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:45,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-19 13:47:45,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:47,257 INFO L124 PetriNetUnfolderBase]: 5288/10869 cut-off events. [2024-11-19 13:47:47,257 INFO L125 PetriNetUnfolderBase]: For 56184/56184 co-relation queries the response was YES. [2024-11-19 13:47:47,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37871 conditions, 10869 events. 5288/10869 cut-off events. For 56184/56184 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 67791 event pairs, 1005 based on Foata normal form. 234/11098 useless extension candidates. Maximal degree in co-relation 30432. Up to 2603 conditions per place. [2024-11-19 13:47:47,333 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 357 selfloop transitions, 76 changer transitions 0/442 dead transitions. [2024-11-19 13:47:47,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 442 transitions, 4291 flow [2024-11-19 13:47:47,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-19 13:47:47,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-19 13:47:47,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 673 transitions. [2024-11-19 13:47:47,336 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5842013888888888 [2024-11-19 13:47:47,336 INFO L175 Difference]: Start difference. First operand has 115 places, 108 transitions, 1344 flow. Second operand 24 states and 673 transitions. [2024-11-19 13:47:47,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 442 transitions, 4291 flow [2024-11-19 13:47:47,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 442 transitions, 4267 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-11-19 13:47:47,413 INFO L231 Difference]: Finished difference. Result has 142 places, 148 transitions, 2175 flow [2024-11-19 13:47:47,413 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1272, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2175, PETRI_PLACES=142, PETRI_TRANSITIONS=148} [2024-11-19 13:47:47,414 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 96 predicate places. [2024-11-19 13:47:47,414 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 148 transitions, 2175 flow [2024-11-19 13:47:47,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 18.541666666666668) internal successors, (445), 24 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:47,414 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:47,414 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:47,428 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 13:47:47,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:47:47,615 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:47:47,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:47,615 INFO L85 PathProgramCache]: Analyzing trace with hash 2145528970, now seen corresponding path program 3 times [2024-11-19 13:47:47,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:47,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182395925] [2024-11-19 13:47:47,615 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 13:47:47,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:47,757 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-19 13:47:47,758 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 13:47:48,122 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-19 13:47:48,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:48,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182395925] [2024-11-19 13:47:48,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182395925] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:47:48,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52033623] [2024-11-19 13:47:48,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 13:47:48,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:47:48,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:47:48,125 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:47:48,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 13:47:48,256 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-19 13:47:48,256 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 13:47:48,258 INFO L255 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-19 13:47:48,260 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:47:48,349 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-19 13:47:48,349 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:47:48,503 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-19 13:47:48,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52033623] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:47:48,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:47:48,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-19 13:47:48,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101734513] [2024-11-19 13:47:48,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:47:48,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-19 13:47:48,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:48,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-19 13:47:48,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2024-11-19 13:47:48,545 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-19 13:47:48,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 148 transitions, 2175 flow. Second operand has 22 states, 22 states have (on average 17.09090909090909) internal successors, (376), 22 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:48,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:48,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-19 13:47:48,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:50,800 INFO L124 PetriNetUnfolderBase]: 7243/14776 cut-off events. [2024-11-19 13:47:50,800 INFO L125 PetriNetUnfolderBase]: For 91360/91360 co-relation queries the response was YES. [2024-11-19 13:47:50,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53288 conditions, 14776 events. 7243/14776 cut-off events. For 91360/91360 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 98286 event pairs, 767 based on Foata normal form. 108/14879 useless extension candidates. Maximal degree in co-relation 50418. Up to 2506 conditions per place. [2024-11-19 13:47:50,941 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 307 selfloop transitions, 141 changer transitions 0/457 dead transitions. [2024-11-19 13:47:50,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 457 transitions, 5164 flow [2024-11-19 13:47:50,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-19 13:47:50,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-19 13:47:50,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 621 transitions. [2024-11-19 13:47:50,944 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49759615384615385 [2024-11-19 13:47:50,944 INFO L175 Difference]: Start difference. First operand has 142 places, 148 transitions, 2175 flow. Second operand 26 states and 621 transitions. [2024-11-19 13:47:50,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 457 transitions, 5164 flow [2024-11-19 13:47:51,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 457 transitions, 5044 flow, removed 45 selfloop flow, removed 7 redundant places. [2024-11-19 13:47:51,116 INFO L231 Difference]: Finished difference. Result has 170 places, 204 transitions, 3437 flow [2024-11-19 13:47:51,117 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2050, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=3437, PETRI_PLACES=170, PETRI_TRANSITIONS=204} [2024-11-19 13:47:51,117 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 124 predicate places. [2024-11-19 13:47:51,117 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 204 transitions, 3437 flow [2024-11-19 13:47:51,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 17.09090909090909) internal successors, (376), 22 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:51,118 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:51,118 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:51,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-19 13:47:51,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-19 13:47:51,321 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:47:51,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:51,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1041437716, now seen corresponding path program 4 times [2024-11-19 13:47:51,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:51,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306495675] [2024-11-19 13:47:51,322 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 13:47:51,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:51,353 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 13:47:51,353 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 13:47:51,634 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-19 13:47:51,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:51,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306495675] [2024-11-19 13:47:51,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306495675] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:47:51,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092899075] [2024-11-19 13:47:51,635 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 13:47:51,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:47:51,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:47:51,637 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:47:51,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 13:47:51,767 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 13:47:51,767 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 13:47:51,770 INFO L255 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-19 13:47:51,772 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:47:51,948 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 196 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 13:47:51,948 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 13:47:51,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092899075] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:51,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 13:47:51,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 26 [2024-11-19 13:47:51,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304891917] [2024-11-19 13:47:51,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:51,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 13:47:51,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:51,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 13:47:51,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=546, Unknown=0, NotChecked=0, Total=650 [2024-11-19 13:47:51,965 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-19 13:47:51,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 204 transitions, 3437 flow. Second operand has 13 states, 13 states have (on average 20.153846153846153) internal successors, (262), 13 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:51,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:51,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-19 13:47:51,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:54,396 INFO L124 PetriNetUnfolderBase]: 7439/14821 cut-off events. [2024-11-19 13:47:54,396 INFO L125 PetriNetUnfolderBase]: For 81782/81810 co-relation queries the response was YES. [2024-11-19 13:47:54,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52853 conditions, 14821 events. 7439/14821 cut-off events. For 81782/81810 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 108348 event pairs, 9 based on Foata normal form. 382/15197 useless extension candidates. Maximal degree in co-relation 52801. Up to 3994 conditions per place. [2024-11-19 13:47:54,472 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 0 selfloop transitions, 0 changer transitions 538/538 dead transitions. [2024-11-19 13:47:54,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 538 transitions, 8067 flow [2024-11-19 13:47:54,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 13:47:54,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-19 13:47:54,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 398 transitions. [2024-11-19 13:47:54,474 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6378205128205128 [2024-11-19 13:47:54,474 INFO L175 Difference]: Start difference. First operand has 170 places, 204 transitions, 3437 flow. Second operand 13 states and 398 transitions. [2024-11-19 13:47:54,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 538 transitions, 8067 flow [2024-11-19 13:47:54,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 538 transitions, 6972 flow, removed 98 selfloop flow, removed 28 redundant places. [2024-11-19 13:47:54,617 INFO L231 Difference]: Finished difference. Result has 144 places, 0 transitions, 0 flow [2024-11-19 13:47:54,617 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1602, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=0, PETRI_PLACES=144, PETRI_TRANSITIONS=0} [2024-11-19 13:47:54,617 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 98 predicate places. [2024-11-19 13:47:54,618 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 0 transitions, 0 flow [2024-11-19 13:47:54,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 20.153846153846153) internal successors, (262), 13 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:54,620 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2024-11-19 13:47:54,620 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 18 remaining) [2024-11-19 13:47:54,620 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2024-11-19 13:47:54,620 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2024-11-19 13:47:54,620 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2024-11-19 13:47:54,621 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2024-11-19 13:47:54,621 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2024-11-19 13:47:54,621 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2024-11-19 13:47:54,621 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2024-11-19 13:47:54,621 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2024-11-19 13:47:54,621 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2024-11-19 13:47:54,621 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2024-11-19 13:47:54,621 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2024-11-19 13:47:54,621 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2024-11-19 13:47:54,621 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2024-11-19 13:47:54,621 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2024-11-19 13:47:54,622 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2024-11-19 13:47:54,622 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2024-11-19 13:47:54,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-19 13:47:54,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-19 13:47:54,825 INFO L407 BasicCegarLoop]: Path program histogram: [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:54,830 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-19 13:47:54,830 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-19 13:47:54,834 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 01:47:54 BasicIcfg [2024-11-19 13:47:54,834 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-19 13:47:54,834 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-19 13:47:54,834 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-19 13:47:54,834 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-19 13:47:54,835 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:47:32" (3/4) ... [2024-11-19 13:47:54,836 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-19 13:47:54,838 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2024-11-19 13:47:54,838 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2024-11-19 13:47:54,841 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 40 nodes and edges [2024-11-19 13:47:54,841 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-19 13:47:54,841 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-19 13:47:54,841 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-19 13:47:54,921 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-19 13:47:54,921 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-19 13:47:54,921 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-19 13:47:54,922 INFO L158 Benchmark]: Toolchain (without parser) took 24024.79ms. Allocated memory was 174.1MB in the beginning and 2.5GB in the end (delta: 2.3GB). Free memory was 126.0MB in the beginning and 1.9GB in the end (delta: -1.8GB). Peak memory consumption was 573.1MB. Max. memory is 16.1GB. [2024-11-19 13:47:54,922 INFO L158 Benchmark]: CDTParser took 1.24ms. Allocated memory is still 174.1MB. Free memory was 141.6MB in the beginning and 141.5MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 13:47:54,922 INFO L158 Benchmark]: CACSL2BoogieTranslator took 493.91ms. Allocated memory is still 174.1MB. Free memory was 125.4MB in the beginning and 93.2MB in the end (delta: 32.2MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-11-19 13:47:54,923 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.65ms. Allocated memory is still 174.1MB. Free memory was 93.2MB in the beginning and 90.3MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-19 13:47:54,923 INFO L158 Benchmark]: Boogie Preprocessor took 65.14ms. Allocated memory is still 174.1MB. Free memory was 90.3MB in the beginning and 87.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-19 13:47:54,924 INFO L158 Benchmark]: RCFGBuilder took 587.17ms. Allocated memory is still 174.1MB. Free memory was 87.6MB in the beginning and 139.7MB in the end (delta: -52.1MB). Peak memory consumption was 48.5MB. Max. memory is 16.1GB. [2024-11-19 13:47:54,924 INFO L158 Benchmark]: TraceAbstraction took 22728.98ms. Allocated memory was 174.1MB in the beginning and 2.5GB in the end (delta: 2.3GB). Free memory was 138.8MB in the beginning and 1.9GB in the end (delta: -1.7GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2024-11-19 13:47:54,924 INFO L158 Benchmark]: Witness Printer took 87.39ms. Allocated memory is still 2.5GB. Free memory was 1.9GB in the beginning and 1.9GB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-19 13:47:54,926 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.24ms. Allocated memory is still 174.1MB. Free memory was 141.6MB in the beginning and 141.5MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 493.91ms. Allocated memory is still 174.1MB. Free memory was 125.4MB in the beginning and 93.2MB in the end (delta: 32.2MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.65ms. Allocated memory is still 174.1MB. Free memory was 93.2MB in the beginning and 90.3MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.14ms. Allocated memory is still 174.1MB. Free memory was 90.3MB in the beginning and 87.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 587.17ms. Allocated memory is still 174.1MB. Free memory was 87.6MB in the beginning and 139.7MB in the end (delta: -52.1MB). Peak memory consumption was 48.5MB. Max. memory is 16.1GB. * TraceAbstraction took 22728.98ms. Allocated memory was 174.1MB in the beginning and 2.5GB in the end (delta: 2.3GB). Free memory was 138.8MB in the beginning and 1.9GB in the end (delta: -1.7GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. * Witness Printer took 87.39ms. Allocated memory is still 2.5GB. Free memory was 1.9GB in the beginning and 1.9GB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 946]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 946]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 992]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 992]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 950]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1006]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 950]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1006]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 81 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 22.6s, OverallIterations: 18, TraceHistogramMax: 7, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 16.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1670 SdHoareTripleChecker+Valid, 3.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1605 mSDsluCounter, 290 SdHoareTripleChecker+Invalid, 2.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 272 mSDsCounter, 106 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4689 IncrementalHoareTripleChecker+Invalid, 4795 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 106 mSolverCounterUnsat, 18 mSDtfsCounter, 4689 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 702 GetRequests, 498 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 886 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3437occurred in iteration=17, InterpolantAutomatonStates: 156, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 895 NumberOfCodeBlocks, 895 NumberOfCodeBlocksAsserted, 41 NumberOfCheckSat, 1045 ConstructedInterpolants, 0 QuantifiedInterpolants, 2907 SizeOfPredicates, 28 NumberOfNonLiveVariables, 2515 ConjunctsInSsa, 69 ConjunctsInUnsatCore, 31 InterpolantComputations, 14 PerfectInterpolantSequences, 324/1109 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-19 13:47:54,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE