./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a900e47bcb0579a731ecfed3c71b01054e5f0917c7f65049265d17494d326436 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 01:39:51,319 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 01:39:51,386 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 01:39:51,392 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 01:39:51,394 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 01:39:51,420 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 01:39:51,421 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 01:39:51,421 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 01:39:51,422 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 01:39:51,423 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 01:39:51,423 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 01:39:51,424 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 01:39:51,424 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 01:39:51,424 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 01:39:51,425 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 01:39:51,427 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 01:39:51,427 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 01:39:51,427 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 01:39:51,427 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 01:39:51,428 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 01:39:51,428 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 01:39:51,431 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 01:39:51,431 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 01:39:51,432 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 01:39:51,432 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 01:39:51,432 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 01:39:51,432 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 01:39:51,432 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 01:39:51,433 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 01:39:51,433 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 01:39:51,433 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 01:39:51,433 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 01:39:51,433 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:39:51,434 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 01:39:51,434 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 01:39:51,434 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 01:39:51,434 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 01:39:51,435 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 01:39:51,435 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 01:39:51,435 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 01:39:51,435 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 01:39:51,437 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 01:39:51,438 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a900e47bcb0579a731ecfed3c71b01054e5f0917c7f65049265d17494d326436 [2024-11-19 01:39:51,694 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 01:39:51,736 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 01:39:51,738 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 01:39:51,739 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 01:39:51,740 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 01:39:51,741 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i [2024-11-19 01:39:53,119 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 01:39:53,350 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 01:39:53,351 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i [2024-11-19 01:39:53,369 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb9810ea6/5f4093ae68734146b9b573b4147bb2b6/FLAG6b73c6da4 [2024-11-19 01:39:53,386 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb9810ea6/5f4093ae68734146b9b573b4147bb2b6 [2024-11-19 01:39:53,389 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 01:39:53,390 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 01:39:53,391 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 01:39:53,391 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 01:39:53,401 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 01:39:53,401 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:39:53" (1/1) ... [2024-11-19 01:39:53,402 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2719e741 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:53, skipping insertion in model container [2024-11-19 01:39:53,402 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:39:53" (1/1) ... [2024-11-19 01:39:53,430 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 01:39:53,664 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i[1103,1116] [2024-11-19 01:39:53,780 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:39:53,799 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 01:39:53,810 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i[1103,1116] [2024-11-19 01:39:53,834 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:39:53,861 INFO L204 MainTranslator]: Completed translation [2024-11-19 01:39:53,861 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:53 WrapperNode [2024-11-19 01:39:53,861 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 01:39:53,862 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 01:39:53,862 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 01:39:53,862 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 01:39:53,868 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:53" (1/1) ... [2024-11-19 01:39:53,880 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:53" (1/1) ... [2024-11-19 01:39:53,902 INFO L138 Inliner]: procedures = 162, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 82 [2024-11-19 01:39:53,903 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 01:39:53,904 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 01:39:53,904 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 01:39:53,904 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 01:39:53,911 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:53" (1/1) ... [2024-11-19 01:39:53,912 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:53" (1/1) ... [2024-11-19 01:39:53,914 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:53" (1/1) ... [2024-11-19 01:39:53,935 INFO L175 MemorySlicer]: Split 17 memory accesses to 4 slices as follows [2, 5, 5, 5]. 29 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 5, 5]. The 0 writes are split as follows [0, 0, 0, 0]. [2024-11-19 01:39:53,939 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:53" (1/1) ... [2024-11-19 01:39:53,939 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:53" (1/1) ... [2024-11-19 01:39:53,943 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:53" (1/1) ... [2024-11-19 01:39:53,948 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:53" (1/1) ... [2024-11-19 01:39:53,949 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:53" (1/1) ... [2024-11-19 01:39:53,952 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:53" (1/1) ... [2024-11-19 01:39:53,953 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 01:39:53,958 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 01:39:53,958 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 01:39:53,958 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 01:39:53,958 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:53" (1/1) ... [2024-11-19 01:39:53,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:39:53,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:39:53,987 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 01:39:53,989 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 01:39:54,033 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-11-19 01:39:54,034 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-11-19 01:39:54,035 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-19 01:39:54,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 01:39:54,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 01:39:54,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 01:39:54,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 01:39:54,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-19 01:39:54,036 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-19 01:39:54,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 01:39:54,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 01:39:54,037 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 01:39:54,152 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 01:39:54,153 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 01:39:54,378 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 01:39:54,378 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 01:39:54,488 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 01:39:54,488 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-19 01:39:54,488 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:39:54 BoogieIcfgContainer [2024-11-19 01:39:54,488 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 01:39:54,490 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 01:39:54,490 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 01:39:54,492 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 01:39:54,493 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:39:53" (1/3) ... [2024-11-19 01:39:54,493 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3426f569 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:39:54, skipping insertion in model container [2024-11-19 01:39:54,493 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:53" (2/3) ... [2024-11-19 01:39:54,494 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3426f569 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:39:54, skipping insertion in model container [2024-11-19 01:39:54,494 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:39:54" (3/3) ... [2024-11-19 01:39:54,495 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_29-multiple-protecting2-vesal_true.i [2024-11-19 01:39:54,509 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 01:39:54,509 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-11-19 01:39:54,509 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 01:39:54,540 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-19 01:39:54,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 50 transitions, 107 flow [2024-11-19 01:39:54,592 INFO L124 PetriNetUnfolderBase]: 3/49 cut-off events. [2024-11-19 01:39:54,592 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-19 01:39:54,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 49 events. 3/49 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-11-19 01:39:54,595 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 50 transitions, 107 flow [2024-11-19 01:39:54,597 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 38 transitions, 79 flow [2024-11-19 01:39:54,609 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 01:39:54,619 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;@7585e8eb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 01:39:54,619 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-19 01:39:54,629 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 01:39:54,629 INFO L124 PetriNetUnfolderBase]: 1/17 cut-off events. [2024-11-19 01:39:54,629 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 01:39:54,629 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:39:54,630 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:39:54,630 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-19 01:39:54,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:39:54,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1639432612, now seen corresponding path program 1 times [2024-11-19 01:39:54,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:39:54,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341215244] [2024-11-19 01:39:54,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:39:54,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:39:54,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:39:54,997 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 01:39:54,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:39:54,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341215244] [2024-11-19 01:39:54,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341215244] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:39:55,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:39:55,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 01:39:55,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678685064] [2024-11-19 01:39:55,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:39:55,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:39:55,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:39:55,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:39:55,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:39:55,059 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-11-19 01:39:55,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 38 transitions, 79 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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 01:39:55,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:39:55,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-11-19 01:39:55,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:39:55,222 INFO L124 PetriNetUnfolderBase]: 132/344 cut-off events. [2024-11-19 01:39:55,222 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 01:39:55,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 640 conditions, 344 events. 132/344 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1533 event pairs, 61 based on Foata normal form. 14/342 useless extension candidates. Maximal degree in co-relation 631. Up to 128 conditions per place. [2024-11-19 01:39:55,230 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 39 selfloop transitions, 11 changer transitions 0/60 dead transitions. [2024-11-19 01:39:55,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 60 transitions, 223 flow [2024-11-19 01:39:55,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:39:55,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:39:55,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-11-19 01:39:55,243 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-19 01:39:55,244 INFO L175 Difference]: Start difference. First operand has 40 places, 38 transitions, 79 flow. Second operand 5 states and 125 transitions. [2024-11-19 01:39:55,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 60 transitions, 223 flow [2024-11-19 01:39:55,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 60 transitions, 222 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 01:39:55,250 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 138 flow [2024-11-19 01:39:55,253 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=138, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2024-11-19 01:39:55,256 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 7 predicate places. [2024-11-19 01:39:55,257 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 138 flow [2024-11-19 01:39:55,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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 01:39:55,258 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:39:55,258 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:39:55,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 01:39:55,259 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-19 01:39:55,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:39:55,260 INFO L85 PathProgramCache]: Analyzing trace with hash 758333671, now seen corresponding path program 1 times [2024-11-19 01:39:55,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:39:55,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089035614] [2024-11-19 01:39:55,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:39:55,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:39:55,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:39:55,373 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 01:39:55,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:39:55,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089035614] [2024-11-19 01:39:55,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089035614] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:39:55,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:39:55,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 01:39:55,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938519636] [2024-11-19 01:39:55,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:39:55,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:39:55,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:39:55,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:39:55,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:39:55,385 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-11-19 01:39:55,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 138 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 01:39:55,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:39:55,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-11-19 01:39:55,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:39:55,504 INFO L124 PetriNetUnfolderBase]: 135/347 cut-off events. [2024-11-19 01:39:55,504 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2024-11-19 01:39:55,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 803 conditions, 347 events. 135/347 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1573 event pairs, 34 based on Foata normal form. 10/355 useless extension candidates. Maximal degree in co-relation 789. Up to 184 conditions per place. [2024-11-19 01:39:55,509 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 44 selfloop transitions, 13 changer transitions 0/67 dead transitions. [2024-11-19 01:39:55,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 67 transitions, 336 flow [2024-11-19 01:39:55,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:39:55,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:39:55,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-11-19 01:39:55,511 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.484 [2024-11-19 01:39:55,511 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 138 flow. Second operand 5 states and 121 transitions. [2024-11-19 01:39:55,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 67 transitions, 336 flow [2024-11-19 01:39:55,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 67 transitions, 336 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 01:39:55,518 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 226 flow [2024-11-19 01:39:55,519 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=226, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2024-11-19 01:39:55,520 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 14 predicate places. [2024-11-19 01:39:55,520 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 226 flow [2024-11-19 01:39:55,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 01:39:55,520 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:39:55,520 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:39:55,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 01:39:55,521 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-19 01:39:55,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:39:55,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1363142688, now seen corresponding path program 1 times [2024-11-19 01:39:55,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:39:55,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289988754] [2024-11-19 01:39:55,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:39:55,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:39:55,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:39:55,616 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 01:39:55,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:39:55,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289988754] [2024-11-19 01:39:55,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289988754] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:39:55,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:39:55,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:39:55,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347391953] [2024-11-19 01:39:55,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:39:55,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:39:55,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:39:55,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:39:55,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:39:55,628 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-11-19 01:39:55,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 226 flow. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:39:55,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:39:55,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-11-19 01:39:55,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:39:55,754 INFO L124 PetriNetUnfolderBase]: 131/348 cut-off events. [2024-11-19 01:39:55,754 INFO L125 PetriNetUnfolderBase]: For 396/396 co-relation queries the response was YES. [2024-11-19 01:39:55,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 934 conditions, 348 events. 131/348 cut-off events. For 396/396 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1516 event pairs, 36 based on Foata normal form. 17/363 useless extension candidates. Maximal degree in co-relation 915. Up to 154 conditions per place. [2024-11-19 01:39:55,758 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 46 selfloop transitions, 10 changer transitions 1/66 dead transitions. [2024-11-19 01:39:55,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 66 transitions, 399 flow [2024-11-19 01:39:55,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 01:39:55,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 01:39:55,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 134 transitions. [2024-11-19 01:39:55,761 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44666666666666666 [2024-11-19 01:39:55,761 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 226 flow. Second operand 6 states and 134 transitions. [2024-11-19 01:39:55,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 66 transitions, 399 flow [2024-11-19 01:39:55,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 66 transitions, 394 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-19 01:39:55,767 INFO L231 Difference]: Finished difference. Result has 60 places, 49 transitions, 281 flow [2024-11-19 01:39:55,768 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=281, PETRI_PLACES=60, PETRI_TRANSITIONS=49} [2024-11-19 01:39:55,769 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 20 predicate places. [2024-11-19 01:39:55,769 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 49 transitions, 281 flow [2024-11-19 01:39:55,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:39:55,770 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:39:55,770 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 01:39:55,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 01:39:55,770 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-19 01:39:55,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:39:55,793 INFO L85 PathProgramCache]: Analyzing trace with hash -794936313, now seen corresponding path program 1 times [2024-11-19 01:39:55,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:39:55,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119871542] [2024-11-19 01:39:55,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:39:55,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:39:55,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:39:55,913 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 01:39:55,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:39:55,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119871542] [2024-11-19 01:39:55,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119871542] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:39:55,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:39:55,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:39:55,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446063522] [2024-11-19 01:39:55,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:39:55,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 01:39:55,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:39:55,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 01:39:55,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 01:39:55,939 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-11-19 01:39:55,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 49 transitions, 281 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:39:55,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:39:55,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-11-19 01:39:55,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:39:56,110 INFO L124 PetriNetUnfolderBase]: 126/320 cut-off events. [2024-11-19 01:39:56,111 INFO L125 PetriNetUnfolderBase]: For 585/585 co-relation queries the response was YES. [2024-11-19 01:39:56,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 975 conditions, 320 events. 126/320 cut-off events. For 585/585 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1349 event pairs, 18 based on Foata normal form. 4/322 useless extension candidates. Maximal degree in co-relation 951. Up to 84 conditions per place. [2024-11-19 01:39:56,113 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 47 selfloop transitions, 17 changer transitions 0/72 dead transitions. [2024-11-19 01:39:56,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 72 transitions, 485 flow [2024-11-19 01:39:56,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 01:39:56,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 01:39:56,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 172 transitions. [2024-11-19 01:39:56,119 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43 [2024-11-19 01:39:56,119 INFO L175 Difference]: Start difference. First operand has 60 places, 49 transitions, 281 flow. Second operand 8 states and 172 transitions. [2024-11-19 01:39:56,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 72 transitions, 485 flow [2024-11-19 01:39:56,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 72 transitions, 449 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-11-19 01:39:56,123 INFO L231 Difference]: Finished difference. Result has 60 places, 48 transitions, 283 flow [2024-11-19 01:39:56,123 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=283, PETRI_PLACES=60, PETRI_TRANSITIONS=48} [2024-11-19 01:39:56,124 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 20 predicate places. [2024-11-19 01:39:56,124 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 48 transitions, 283 flow [2024-11-19 01:39:56,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:39:56,124 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:39:56,124 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:39:56,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 01:39:56,125 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-19 01:39:56,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:39:56,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1680805028, now seen corresponding path program 1 times [2024-11-19 01:39:56,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:39:56,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982118730] [2024-11-19 01:39:56,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:39:56,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:39:56,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:39:56,242 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 01:39:56,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:39:56,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982118730] [2024-11-19 01:39:56,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982118730] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:39:56,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:39:56,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:39:56,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249761947] [2024-11-19 01:39:56,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:39:56,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:39:56,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:39:56,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:39:56,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:39:56,245 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-11-19 01:39:56,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 48 transitions, 283 flow. Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 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 01:39:56,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:39:56,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-11-19 01:39:56,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:39:56,310 INFO L124 PetriNetUnfolderBase]: 53/187 cut-off events. [2024-11-19 01:39:56,310 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2024-11-19 01:39:56,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 539 conditions, 187 events. 53/187 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 676 event pairs, 16 based on Foata normal form. 19/202 useless extension candidates. Maximal degree in co-relation 517. Up to 77 conditions per place. [2024-11-19 01:39:56,311 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 29 selfloop transitions, 9 changer transitions 0/53 dead transitions. [2024-11-19 01:39:56,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 53 transitions, 359 flow [2024-11-19 01:39:56,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:39:56,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 01:39:56,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-11-19 01:39:56,313 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.58 [2024-11-19 01:39:56,313 INFO L175 Difference]: Start difference. First operand has 60 places, 48 transitions, 283 flow. Second operand 4 states and 116 transitions. [2024-11-19 01:39:56,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 53 transitions, 359 flow [2024-11-19 01:39:56,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 53 transitions, 306 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-11-19 01:39:56,315 INFO L231 Difference]: Finished difference. Result has 55 places, 44 transitions, 224 flow [2024-11-19 01:39:56,316 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=224, PETRI_PLACES=55, PETRI_TRANSITIONS=44} [2024-11-19 01:39:56,317 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 15 predicate places. [2024-11-19 01:39:56,318 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 44 transitions, 224 flow [2024-11-19 01:39:56,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 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 01:39:56,318 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:39:56,318 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:39:56,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 01:39:56,319 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-19 01:39:56,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:39:56,320 INFO L85 PathProgramCache]: Analyzing trace with hash -834053480, now seen corresponding path program 1 times [2024-11-19 01:39:56,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:39:56,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393073854] [2024-11-19 01:39:56,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:39:56,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:39:56,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:39:56,492 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 01:39:56,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:39:56,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393073854] [2024-11-19 01:39:56,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393073854] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:39:56,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:39:56,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:39:56,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569888596] [2024-11-19 01:39:56,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:39:56,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 01:39:56,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:39:56,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 01:39:56,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-19 01:39:56,497 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-11-19 01:39:56,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 44 transitions, 224 flow. Second operand has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 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 01:39:56,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:39:56,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-11-19 01:39:56,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:39:56,560 INFO L124 PetriNetUnfolderBase]: 42/160 cut-off events. [2024-11-19 01:39:56,561 INFO L125 PetriNetUnfolderBase]: For 158/158 co-relation queries the response was YES. [2024-11-19 01:39:56,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 472 conditions, 160 events. 42/160 cut-off events. For 158/158 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 504 event pairs, 8 based on Foata normal form. 9/168 useless extension candidates. Maximal degree in co-relation 453. Up to 72 conditions per place. [2024-11-19 01:39:56,562 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 35 selfloop transitions, 5 changer transitions 0/55 dead transitions. [2024-11-19 01:39:56,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 55 transitions, 362 flow [2024-11-19 01:39:56,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:39:56,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 01:39:56,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2024-11-19 01:39:56,564 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.555 [2024-11-19 01:39:56,564 INFO L175 Difference]: Start difference. First operand has 55 places, 44 transitions, 224 flow. Second operand 4 states and 111 transitions. [2024-11-19 01:39:56,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 55 transitions, 362 flow [2024-11-19 01:39:56,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 55 transitions, 359 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-19 01:39:56,566 INFO L231 Difference]: Finished difference. Result has 57 places, 44 transitions, 231 flow [2024-11-19 01:39:56,567 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=231, PETRI_PLACES=57, PETRI_TRANSITIONS=44} [2024-11-19 01:39:56,567 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 17 predicate places. [2024-11-19 01:39:56,568 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 44 transitions, 231 flow [2024-11-19 01:39:56,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 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 01:39:56,569 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:39:56,569 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:39:56,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 01:39:56,569 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-19 01:39:56,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:39:56,569 INFO L85 PathProgramCache]: Analyzing trace with hash 127158303, now seen corresponding path program 1 times [2024-11-19 01:39:56,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:39:56,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538454083] [2024-11-19 01:39:56,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:39:56,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:39:56,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:39:56,687 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 01:39:56,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:39:56,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538454083] [2024-11-19 01:39:56,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538454083] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:39:56,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:39:56,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:39:56,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370369827] [2024-11-19 01:39:56,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:39:56,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:39:56,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:39:56,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:39:56,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:39:56,698 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-11-19 01:39:56,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 231 flow. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 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 01:39:56,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:39:56,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-11-19 01:39:56,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:39:56,776 INFO L124 PetriNetUnfolderBase]: 50/164 cut-off events. [2024-11-19 01:39:56,776 INFO L125 PetriNetUnfolderBase]: For 140/140 co-relation queries the response was YES. [2024-11-19 01:39:56,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 546 conditions, 164 events. 50/164 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 526 event pairs, 21 based on Foata normal form. 2/164 useless extension candidates. Maximal degree in co-relation 526. Up to 75 conditions per place. [2024-11-19 01:39:56,777 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 0 selfloop transitions, 0 changer transitions 49/49 dead transitions. [2024-11-19 01:39:56,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 49 transitions, 338 flow [2024-11-19 01:39:56,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 01:39:56,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 01:39:56,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 120 transitions. [2024-11-19 01:39:56,779 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-11-19 01:39:56,779 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 231 flow. Second operand 6 states and 120 transitions. [2024-11-19 01:39:56,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 49 transitions, 338 flow [2024-11-19 01:39:56,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 49 transitions, 331 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 01:39:56,781 INFO L231 Difference]: Finished difference. Result has 58 places, 0 transitions, 0 flow [2024-11-19 01:39:56,781 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=58, PETRI_TRANSITIONS=0} [2024-11-19 01:39:56,782 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 18 predicate places. [2024-11-19 01:39:56,782 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 0 transitions, 0 flow [2024-11-19 01:39:56,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 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 01:39:56,784 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-11-19 01:39:56,785 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2024-11-19 01:39:56,785 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2024-11-19 01:39:56,785 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-19 01:39:56,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 01:39:56,786 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:39:56,788 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-19 01:39:56,789 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-19 01:39:56,794 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 01:39:56 BasicIcfg [2024-11-19 01:39:56,794 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-19 01:39:56,794 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-19 01:39:56,795 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-19 01:39:56,795 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-19 01:39:56,795 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:39:54" (3/4) ... [2024-11-19 01:39:56,797 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-19 01:39:56,800 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2_fun [2024-11-19 01:39:56,804 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 36 nodes and edges [2024-11-19 01:39:56,804 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-19 01:39:56,805 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-19 01:39:56,805 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-19 01:39:56,874 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-19 01:39:56,876 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-19 01:39:56,876 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-19 01:39:56,877 INFO L158 Benchmark]: Toolchain (without parser) took 3487.25ms. Allocated memory was 174.1MB in the beginning and 228.6MB in the end (delta: 54.5MB). Free memory was 103.2MB in the beginning and 119.4MB in the end (delta: -16.2MB). Peak memory consumption was 38.5MB. Max. memory is 16.1GB. [2024-11-19 01:39:56,877 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 174.1MB. Free memory was 133.4MB in the beginning and 133.2MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 01:39:56,877 INFO L158 Benchmark]: CACSL2BoogieTranslator took 471.04ms. Allocated memory is still 174.1MB. Free memory was 103.1MB in the beginning and 130.1MB in the end (delta: -27.0MB). Peak memory consumption was 8.2MB. Max. memory is 16.1GB. [2024-11-19 01:39:56,879 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.75ms. Allocated memory is still 174.1MB. Free memory was 130.1MB in the beginning and 128.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-19 01:39:56,879 INFO L158 Benchmark]: Boogie Preprocessor took 53.25ms. Allocated memory is still 174.1MB. Free memory was 128.0MB in the beginning and 125.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-19 01:39:56,880 INFO L158 Benchmark]: RCFGBuilder took 531.02ms. Allocated memory is still 174.1MB. Free memory was 125.9MB in the beginning and 92.3MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-11-19 01:39:56,880 INFO L158 Benchmark]: TraceAbstraction took 2304.26ms. Allocated memory was 174.1MB in the beginning and 228.6MB in the end (delta: 54.5MB). Free memory was 91.5MB in the beginning and 123.6MB in the end (delta: -32.1MB). Peak memory consumption was 24.1MB. Max. memory is 16.1GB. [2024-11-19 01:39:56,880 INFO L158 Benchmark]: Witness Printer took 81.98ms. Allocated memory is still 228.6MB. Free memory was 123.6MB in the beginning and 119.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-19 01:39:56,881 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 174.1MB. Free memory was 133.4MB in the beginning and 133.2MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 471.04ms. Allocated memory is still 174.1MB. Free memory was 103.1MB in the beginning and 130.1MB in the end (delta: -27.0MB). Peak memory consumption was 8.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.75ms. Allocated memory is still 174.1MB. Free memory was 130.1MB in the beginning and 128.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.25ms. Allocated memory is still 174.1MB. Free memory was 128.0MB in the beginning and 125.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 531.02ms. Allocated memory is still 174.1MB. Free memory was 125.9MB in the beginning and 92.3MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2304.26ms. Allocated memory was 174.1MB in the beginning and 228.6MB in the end (delta: 54.5MB). Free memory was 91.5MB in the beginning and 123.6MB in the end (delta: -32.1MB). Peak memory consumption was 24.1MB. Max. memory is 16.1GB. * Witness Printer took 81.98ms. Allocated memory is still 228.6MB. Free memory was 123.6MB in the beginning and 119.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 63 locations, 4 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: 2.2s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 256 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 238 mSDsluCounter, 60 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 39 mSDsCounter, 58 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 591 IncrementalHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 58 mSolverCounterUnsat, 21 mSDtfsCounter, 591 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=283occurred in iteration=4, InterpolantAutomatonStates: 38, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 134 NumberOfCodeBlocks, 134 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 127 ConstructedInterpolants, 0 QuantifiedInterpolants, 508 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 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 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-19 01:39:56,906 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE