./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread/fib_safe-11.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d 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/fib_safe-11.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 67ab3b79be699544cc101a76da66f98a1e0e6116d5865ddc6f998abd49388964 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 19:03:01,421 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 19:03:01,498 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 19:03:01,505 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 19:03:01,506 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 19:03:01,553 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 19:03:01,553 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 19:03:01,554 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 19:03:01,555 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 19:03:01,556 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 19:03:01,556 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 19:03:01,556 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 19:03:01,557 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 19:03:01,557 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 19:03:01,560 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 19:03:01,560 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 19:03:01,560 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 19:03:01,561 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 19:03:01,561 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 19:03:01,561 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 19:03:01,561 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 19:03:01,565 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 19:03:01,566 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 19:03:01,566 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 19:03:01,566 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 19:03:01,566 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 19:03:01,567 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 19:03:01,567 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 19:03:01,567 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 19:03:01,567 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 19:03:01,568 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 19:03:01,568 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 19:03:01,568 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:03:01,568 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 19:03:01,569 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 19:03:01,569 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 19:03:01,571 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 19:03:01,572 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 19:03:01,573 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 19:03:01,574 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 19:03:01,574 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 19:03:01,574 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 19:03:01,575 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67ab3b79be699544cc101a76da66f98a1e0e6116d5865ddc6f998abd49388964 [2024-11-16 19:03:01,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 19:03:01,907 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 19:03:01,911 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 19:03:01,912 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 19:03:01,913 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 19:03:01,914 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/fib_safe-11.i [2024-11-16 19:03:03,514 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 19:03:03,800 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 19:03:03,803 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/fib_safe-11.i [2024-11-16 19:03:03,825 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa0947bdd/4af7c4da8c8c471e8093f9143ddbc14b/FLAG75d620171 [2024-11-16 19:03:03,847 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa0947bdd/4af7c4da8c8c471e8093f9143ddbc14b [2024-11-16 19:03:03,851 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 19:03:03,853 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 19:03:03,854 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 19:03:03,855 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 19:03:03,861 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 19:03:03,862 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:03:03" (1/1) ... [2024-11-16 19:03:03,863 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@751564d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:03:03, skipping insertion in model container [2024-11-16 19:03:03,863 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:03:03" (1/1) ... [2024-11-16 19:03:03,919 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 19:03:04,303 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/pthread/fib_safe-11.i[30241,30254] [2024-11-16 19:03:04,329 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:03:04,341 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 19:03:04,390 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/pthread/fib_safe-11.i[30241,30254] [2024-11-16 19:03:04,422 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:03:04,498 INFO L204 MainTranslator]: Completed translation [2024-11-16 19:03:04,502 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:03:04 WrapperNode [2024-11-16 19:03:04,502 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 19:03:04,504 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 19:03:04,504 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 19:03:04,504 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 19:03:04,511 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:03:04" (1/1) ... [2024-11-16 19:03:04,523 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:03:04" (1/1) ... [2024-11-16 19:03:04,545 INFO L138 Inliner]: procedures = 164, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 65 [2024-11-16 19:03:04,546 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 19:03:04,546 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 19:03:04,547 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 19:03:04,547 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 19:03:04,556 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:03:04" (1/1) ... [2024-11-16 19:03:04,557 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:03:04" (1/1) ... [2024-11-16 19:03:04,560 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:03:04" (1/1) ... [2024-11-16 19:03:04,574 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-16 19:03:04,575 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:03:04" (1/1) ... [2024-11-16 19:03:04,575 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:03:04" (1/1) ... [2024-11-16 19:03:04,579 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:03:04" (1/1) ... [2024-11-16 19:03:04,580 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:03:04" (1/1) ... [2024-11-16 19:03:04,582 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:03:04" (1/1) ... [2024-11-16 19:03:04,583 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:03:04" (1/1) ... [2024-11-16 19:03:04,585 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 19:03:04,586 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 19:03:04,587 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 19:03:04,587 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 19:03:04,588 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:03:04" (1/1) ... [2024-11-16 19:03:04,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:03:04,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:03:04,633 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) [2024-11-16 19:03:04,638 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 [2024-11-16 19:03:04,688 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-16 19:03:04,688 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-16 19:03:04,688 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-16 19:03:04,689 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-16 19:03:04,689 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-16 19:03:04,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 19:03:04,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 19:03:04,689 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-16 19:03:04,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 19:03:04,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 19:03:04,691 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-16 19:03:04,845 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 19:03:04,847 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 19:03:05,044 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-16 19:03:05,044 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 19:03:05,153 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 19:03:05,153 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 19:03:05,153 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:03:05 BoogieIcfgContainer [2024-11-16 19:03:05,154 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 19:03:05,156 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 19:03:05,156 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 19:03:05,159 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 19:03:05,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:03:03" (1/3) ... [2024-11-16 19:03:05,160 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d710f6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:03:05, skipping insertion in model container [2024-11-16 19:03:05,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:03:04" (2/3) ... [2024-11-16 19:03:05,161 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d710f6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:03:05, skipping insertion in model container [2024-11-16 19:03:05,161 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:03:05" (3/3) ... [2024-11-16 19:03:05,162 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_safe-11.i [2024-11-16 19:03:05,183 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 19:03:05,184 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 19:03:05,184 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-16 19:03:05,236 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-16 19:03:05,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 38 transitions, 84 flow [2024-11-16 19:03:05,301 INFO L124 PetriNetUnfolderBase]: 7/36 cut-off events. [2024-11-16 19:03:05,301 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 19:03:05,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 36 events. 7/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 55 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-11-16 19:03:05,308 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 38 transitions, 84 flow [2024-11-16 19:03:05,312 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 36 transitions, 78 flow [2024-11-16 19:03:05,322 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 19:03:05,328 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;@1c18934, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 19:03:05,328 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-16 19:03:05,345 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 19:03:05,345 INFO L124 PetriNetUnfolderBase]: 7/35 cut-off events. [2024-11-16 19:03:05,346 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 19:03:05,346 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:03:05,348 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:03:05,349 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:03:05,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:03:05,354 INFO L85 PathProgramCache]: Analyzing trace with hash -850951809, now seen corresponding path program 1 times [2024-11-16 19:03:05,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:03:05,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139292317] [2024-11-16 19:03:05,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:03:05,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:03:05,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:03:05,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:03:05,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:03:05,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139292317] [2024-11-16 19:03:05,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139292317] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:03:05,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:03:05,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:03:05,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692761729] [2024-11-16 19:03:05,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:03:05,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 19:03:05,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:03:05,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 19:03:05,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 19:03:05,626 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-11-16 19:03:05,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 36 transitions, 78 flow. Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 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) [2024-11-16 19:03:05,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:03:05,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-11-16 19:03:05,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:03:05,813 INFO L124 PetriNetUnfolderBase]: 233/436 cut-off events. [2024-11-16 19:03:05,813 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 19:03:05,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 807 conditions, 436 events. 233/436 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2024 event pairs, 159 based on Foata normal form. 90/493 useless extension candidates. Maximal degree in co-relation 791. Up to 358 conditions per place. [2024-11-16 19:03:05,828 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 21 selfloop transitions, 0 changer transitions 1/32 dead transitions. [2024-11-16 19:03:05,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 32 transitions, 114 flow [2024-11-16 19:03:05,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 19:03:05,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-16 19:03:05,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 50 transitions. [2024-11-16 19:03:05,843 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6578947368421053 [2024-11-16 19:03:05,848 INFO L175 Difference]: Start difference. First operand has 36 places, 36 transitions, 78 flow. Second operand 2 states and 50 transitions. [2024-11-16 19:03:05,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 32 transitions, 114 flow [2024-11-16 19:03:05,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 32 transitions, 112 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-16 19:03:05,853 INFO L231 Difference]: Finished difference. Result has 35 places, 31 transitions, 66 flow [2024-11-16 19:03:05,855 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=66, PETRI_PLACES=35, PETRI_TRANSITIONS=31} [2024-11-16 19:03:05,860 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -1 predicate places. [2024-11-16 19:03:05,861 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 31 transitions, 66 flow [2024-11-16 19:03:05,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 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) [2024-11-16 19:03:05,862 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:03:05,862 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:03:05,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 19:03:05,864 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:03:05,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:03:05,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1924301250, now seen corresponding path program 1 times [2024-11-16 19:03:05,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:03:05,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065010402] [2024-11-16 19:03:05,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:03:05,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:03:05,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:03:06,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:03:06,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:03:06,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065010402] [2024-11-16 19:03:06,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065010402] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:03:06,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:03:06,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:03:06,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938195601] [2024-11-16 19:03:06,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:03:06,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:03:06,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:03:06,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:03:06,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:03:06,050 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-16 19:03:06,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 31 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2024-11-16 19:03:06,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:03:06,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-16 19:03:06,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:03:06,226 INFO L124 PetriNetUnfolderBase]: 265/484 cut-off events. [2024-11-16 19:03:06,226 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 19:03:06,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 902 conditions, 484 events. 265/484 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2238 event pairs, 39 based on Foata normal form. 0/451 useless extension candidates. Maximal degree in co-relation 899. Up to 305 conditions per place. [2024-11-16 19:03:06,236 INFO L140 encePairwiseOnDemand]: 35/38 looper letters, 29 selfloop transitions, 2 changer transitions 0/40 dead transitions. [2024-11-16 19:03:06,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 40 transitions, 146 flow [2024-11-16 19:03:06,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:03:06,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:03:06,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 65 transitions. [2024-11-16 19:03:06,239 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5701754385964912 [2024-11-16 19:03:06,239 INFO L175 Difference]: Start difference. First operand has 35 places, 31 transitions, 66 flow. Second operand 3 states and 65 transitions. [2024-11-16 19:03:06,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 40 transitions, 146 flow [2024-11-16 19:03:06,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 40 transitions, 146 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 19:03:06,242 INFO L231 Difference]: Finished difference. Result has 37 places, 32 transitions, 78 flow [2024-11-16 19:03:06,243 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=37, PETRI_TRANSITIONS=32} [2024-11-16 19:03:06,243 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 1 predicate places. [2024-11-16 19:03:06,244 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 32 transitions, 78 flow [2024-11-16 19:03:06,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2024-11-16 19:03:06,244 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:03:06,245 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:03:06,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 19:03:06,246 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:03:06,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:03:06,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1884553586, now seen corresponding path program 1 times [2024-11-16 19:03:06,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:03:06,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015563886] [2024-11-16 19:03:06,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:03:06,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:03:06,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:03:06,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:03:06,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:03:06,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015563886] [2024-11-16 19:03:06,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015563886] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:03:06,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133193323] [2024-11-16 19:03:06,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:03:06,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:03:06,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:03:06,378 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) [2024-11-16 19:03:06,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 19:03:06,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:03:06,462 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 19:03:06,469 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:03:06,514 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:03:06,514 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:03:06,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:03:06,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133193323] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:03:06,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:03:06,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-16 19:03:06,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540200134] [2024-11-16 19:03:06,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:03:06,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 19:03:06,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:03:06,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 19:03:06,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-16 19:03:06,542 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-16 19:03:06,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 78 flow. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:03:06,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:03:06,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-16 19:03:06,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:03:06,705 INFO L124 PetriNetUnfolderBase]: 361/676 cut-off events. [2024-11-16 19:03:06,705 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2024-11-16 19:03:06,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1353 conditions, 676 events. 361/676 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3233 event pairs, 39 based on Foata normal form. 0/643 useless extension candidates. Maximal degree in co-relation 1348. Up to 305 conditions per place. [2024-11-16 19:03:06,710 INFO L140 encePairwiseOnDemand]: 35/38 looper letters, 53 selfloop transitions, 5 changer transitions 0/67 dead transitions. [2024-11-16 19:03:06,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 67 transitions, 270 flow [2024-11-16 19:03:06,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:03:06,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:03:06,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 127 transitions. [2024-11-16 19:03:06,713 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5570175438596491 [2024-11-16 19:03:06,713 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 78 flow. Second operand 6 states and 127 transitions. [2024-11-16 19:03:06,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 67 transitions, 270 flow [2024-11-16 19:03:06,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 67 transitions, 268 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 19:03:06,716 INFO L231 Difference]: Finished difference. Result has 44 places, 35 transitions, 112 flow [2024-11-16 19:03:06,716 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=112, PETRI_PLACES=44, PETRI_TRANSITIONS=35} [2024-11-16 19:03:06,717 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 8 predicate places. [2024-11-16 19:03:06,717 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 35 transitions, 112 flow [2024-11-16 19:03:06,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:03:06,717 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:03:06,718 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:03:06,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-16 19:03:06,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:03:06,923 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:03:06,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:03:06,924 INFO L85 PathProgramCache]: Analyzing trace with hash 291669886, now seen corresponding path program 2 times [2024-11-16 19:03:06,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:03:06,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181756611] [2024-11-16 19:03:06,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:03:06,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:03:06,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:03:07,085 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:03:07,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:03:07,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181756611] [2024-11-16 19:03:07,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181756611] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:03:07,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092417902] [2024-11-16 19:03:07,086 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 19:03:07,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:03:07,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:03:07,089 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) [2024-11-16 19:03:07,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 19:03:07,160 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 19:03:07,160 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:03:07,161 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 19:03:07,163 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:03:07,195 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:03:07,195 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:03:07,284 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:03:07,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092417902] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:03:07,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:03:07,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-16 19:03:07,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47333228] [2024-11-16 19:03:07,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:03:07,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-16 19:03:07,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:03:07,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-16 19:03:07,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-16 19:03:07,287 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-16 19:03:07,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 35 transitions, 112 flow. Second operand has 13 states, 13 states have (on average 12.923076923076923) internal successors, (168), 13 states have internal predecessors, (168), 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) [2024-11-16 19:03:07,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:03:07,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-16 19:03:07,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:03:07,614 INFO L124 PetriNetUnfolderBase]: 553/1060 cut-off events. [2024-11-16 19:03:07,614 INFO L125 PetriNetUnfolderBase]: For 1792/1792 co-relation queries the response was YES. [2024-11-16 19:03:07,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2381 conditions, 1060 events. 553/1060 cut-off events. For 1792/1792 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 5266 event pairs, 39 based on Foata normal form. 96/1139 useless extension candidates. Maximal degree in co-relation 2373. Up to 305 conditions per place. [2024-11-16 19:03:07,622 INFO L140 encePairwiseOnDemand]: 35/38 looper letters, 101 selfloop transitions, 11 changer transitions 0/121 dead transitions. [2024-11-16 19:03:07,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 121 transitions, 532 flow [2024-11-16 19:03:07,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-16 19:03:07,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-16 19:03:07,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 250 transitions. [2024-11-16 19:03:07,625 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5482456140350878 [2024-11-16 19:03:07,625 INFO L175 Difference]: Start difference. First operand has 44 places, 35 transitions, 112 flow. Second operand 12 states and 250 transitions. [2024-11-16 19:03:07,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 121 transitions, 532 flow [2024-11-16 19:03:07,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 121 transitions, 524 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-16 19:03:07,631 INFO L231 Difference]: Finished difference. Result has 60 places, 41 transitions, 188 flow [2024-11-16 19:03:07,631 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=188, PETRI_PLACES=60, PETRI_TRANSITIONS=41} [2024-11-16 19:03:07,632 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 24 predicate places. [2024-11-16 19:03:07,632 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 41 transitions, 188 flow [2024-11-16 19:03:07,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.923076923076923) internal successors, (168), 13 states have internal predecessors, (168), 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) [2024-11-16 19:03:07,633 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:03:07,633 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:03:07,651 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 19:03:07,833 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,SelfDestructingSolverStorable3 [2024-11-16 19:03:07,834 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:03:07,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:03:07,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1326760610, now seen corresponding path program 3 times [2024-11-16 19:03:07,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:03:07,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191289565] [2024-11-16 19:03:07,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:03:07,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:03:07,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:03:08,088 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:03:08,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:03:08,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191289565] [2024-11-16 19:03:08,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191289565] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:03:08,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880010623] [2024-11-16 19:03:08,089 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 19:03:08,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:03:08,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:03:08,091 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) [2024-11-16 19:03:08,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 19:03:08,172 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-16 19:03:08,172 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:03:08,173 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-16 19:03:08,175 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:03:08,227 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:03:08,227 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:03:08,464 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:03:08,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880010623] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:03:08,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:03:08,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-16 19:03:08,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982997353] [2024-11-16 19:03:08,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:03:08,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-16 19:03:08,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:03:08,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-16 19:03:08,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-16 19:03:08,473 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-16 19:03:08,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 41 transitions, 188 flow. Second operand has 25 states, 25 states have (on average 12.48) internal successors, (312), 25 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:03:08,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:03:08,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-16 19:03:08,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:03:09,104 INFO L124 PetriNetUnfolderBase]: 937/1828 cut-off events. [2024-11-16 19:03:09,104 INFO L125 PetriNetUnfolderBase]: For 13968/13968 co-relation queries the response was YES. [2024-11-16 19:03:09,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4628 conditions, 1828 events. 937/1828 cut-off events. For 13968/13968 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 9281 event pairs, 39 based on Foata normal form. 192/2003 useless extension candidates. Maximal degree in co-relation 4613. Up to 384 conditions per place. [2024-11-16 19:03:09,125 INFO L140 encePairwiseOnDemand]: 35/38 looper letters, 197 selfloop transitions, 23 changer transitions 0/229 dead transitions. [2024-11-16 19:03:09,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 229 transitions, 1076 flow [2024-11-16 19:03:09,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-16 19:03:09,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-16 19:03:09,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 496 transitions. [2024-11-16 19:03:09,130 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.543859649122807 [2024-11-16 19:03:09,130 INFO L175 Difference]: Start difference. First operand has 60 places, 41 transitions, 188 flow. Second operand 24 states and 496 transitions. [2024-11-16 19:03:09,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 229 transitions, 1076 flow [2024-11-16 19:03:09,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 229 transitions, 1016 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-11-16 19:03:09,141 INFO L231 Difference]: Finished difference. Result has 90 places, 53 transitions, 320 flow [2024-11-16 19:03:09,141 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=320, PETRI_PLACES=90, PETRI_TRANSITIONS=53} [2024-11-16 19:03:09,142 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 54 predicate places. [2024-11-16 19:03:09,142 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 53 transitions, 320 flow [2024-11-16 19:03:09,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 12.48) internal successors, (312), 25 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:03:09,143 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:03:09,143 INFO L204 CegarLoopForPetriNet]: trace histogram [23, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:03:09,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-16 19:03:09,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:03:09,348 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:03:09,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:03:09,349 INFO L85 PathProgramCache]: Analyzing trace with hash -219203298, now seen corresponding path program 4 times [2024-11-16 19:03:09,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:03:09,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479210515] [2024-11-16 19:03:09,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:03:09,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:03:09,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:03:09,964 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:03:09,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:03:09,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479210515] [2024-11-16 19:03:09,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479210515] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:03:09,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504069355] [2024-11-16 19:03:09,968 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 19:03:09,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:03:09,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:03:09,970 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) [2024-11-16 19:03:09,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 19:03:10,073 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 19:03:10,074 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:03:10,076 INFO L255 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-16 19:03:10,079 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:03:10,175 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:03:10,179 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:03:10,561 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:03:10,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504069355] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:03:10,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:03:10,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 27 [2024-11-16 19:03:10,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6398241] [2024-11-16 19:03:10,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:03:10,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-16 19:03:10,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:03:10,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-16 19:03:10,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2024-11-16 19:03:10,565 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-16 19:03:10,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 53 transitions, 320 flow. Second operand has 27 states, 27 states have (on average 12.481481481481481) internal successors, (337), 27 states have internal predecessors, (337), 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) [2024-11-16 19:03:10,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:03:10,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-16 19:03:10,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:03:11,197 INFO L124 PetriNetUnfolderBase]: 1001/1956 cut-off events. [2024-11-16 19:03:11,197 INFO L125 PetriNetUnfolderBase]: For 15248/15248 co-relation queries the response was YES. [2024-11-16 19:03:11,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5248 conditions, 1956 events. 1001/1956 cut-off events. For 15248/15248 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 9943 event pairs, 39 based on Foata normal form. 32/1971 useless extension candidates. Maximal degree in co-relation 5221. Up to 416 conditions per place. [2024-11-16 19:03:11,215 INFO L140 encePairwiseOnDemand]: 35/38 looper letters, 213 selfloop transitions, 25 changer transitions 0/247 dead transitions. [2024-11-16 19:03:11,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 247 transitions, 1196 flow [2024-11-16 19:03:11,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-16 19:03:11,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-16 19:03:11,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 526 transitions. [2024-11-16 19:03:11,219 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5323886639676113 [2024-11-16 19:03:11,219 INFO L175 Difference]: Start difference. First operand has 90 places, 53 transitions, 320 flow. Second operand 26 states and 526 transitions. [2024-11-16 19:03:11,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 247 transitions, 1196 flow [2024-11-16 19:03:11,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 247 transitions, 1120 flow, removed 27 selfloop flow, removed 11 redundant places. [2024-11-16 19:03:11,242 INFO L231 Difference]: Finished difference. Result has 106 places, 55 transitions, 320 flow [2024-11-16 19:03:11,243 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=320, PETRI_PLACES=106, PETRI_TRANSITIONS=55} [2024-11-16 19:03:11,244 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 70 predicate places. [2024-11-16 19:03:11,245 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 55 transitions, 320 flow [2024-11-16 19:03:11,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 12.481481481481481) internal successors, (337), 27 states have internal predecessors, (337), 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) [2024-11-16 19:03:11,245 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:03:11,246 INFO L204 CegarLoopForPetriNet]: trace histogram [25, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:03:11,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-16 19:03:11,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:03:11,446 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:03:11,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:03:11,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1794438590, now seen corresponding path program 5 times [2024-11-16 19:03:11,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:03:11,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828647622] [2024-11-16 19:03:11,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:03:11,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:03:11,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:03:13,588 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:03:13,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:03:13,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828647622] [2024-11-16 19:03:13,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828647622] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:03:13,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287760844] [2024-11-16 19:03:13,589 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 19:03:13,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:03:13,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:03:13,592 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) [2024-11-16 19:03:13,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 19:03:13,696 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2024-11-16 19:03:13,696 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:03:13,700 INFO L255 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 83 conjuncts are in the unsatisfiable core [2024-11-16 19:03:13,706 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:03:15,687 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 506 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:03:15,687 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:03:17,665 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:03:17,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287760844] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:03:17,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:03:17,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 89 [2024-11-16 19:03:17,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681679124] [2024-11-16 19:03:17,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:03:17,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2024-11-16 19:03:17,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:03:17,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2024-11-16 19:03:17,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1202, Invalid=6808, Unknown=0, NotChecked=0, Total=8010 [2024-11-16 19:03:17,703 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-16 19:03:17,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 55 transitions, 320 flow. Second operand has 90 states, 90 states have (on average 12.188888888888888) internal successors, (1097), 90 states have internal predecessors, (1097), 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) [2024-11-16 19:03:17,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:03:17,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-16 19:03:17,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:04:10,053 INFO L124 PetriNetUnfolderBase]: 36637/72571 cut-off events. [2024-11-16 19:04:10,054 INFO L125 PetriNetUnfolderBase]: For 143514/143868 co-relation queries the response was YES. [2024-11-16 19:04:10,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175560 conditions, 72571 events. 36637/72571 cut-off events. For 143514/143868 co-relation queries the response was YES. Maximal size of possible extension queue 796. Compared 669768 event pairs, 82 based on Foata normal form. 0/67944 useless extension candidates. Maximal degree in co-relation 175531. Up to 14289 conditions per place. [2024-11-16 19:04:10,827 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 955 selfloop transitions, 1475 changer transitions 1141/3580 dead transitions. [2024-11-16 19:04:10,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 3580 transitions, 22573 flow [2024-11-16 19:04:10,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 287 states. [2024-11-16 19:04:10,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2024-11-16 19:04:10,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 5567 transitions. [2024-11-16 19:04:10,841 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5104529616724739 [2024-11-16 19:04:10,841 INFO L175 Difference]: Start difference. First operand has 106 places, 55 transitions, 320 flow. Second operand 287 states and 5567 transitions. [2024-11-16 19:04:10,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 3580 transitions, 22573 flow [2024-11-16 19:04:11,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 3580 transitions, 19679 flow, removed 270 selfloop flow, removed 23 redundant places. [2024-11-16 19:04:11,349 INFO L231 Difference]: Finished difference. Result has 479 places, 1624 transitions, 12132 flow [2024-11-16 19:04:11,350 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=287, PETRI_FLOW=12132, PETRI_PLACES=479, PETRI_TRANSITIONS=1624} [2024-11-16 19:04:11,352 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 443 predicate places. [2024-11-16 19:04:11,352 INFO L471 AbstractCegarLoop]: Abstraction has has 479 places, 1624 transitions, 12132 flow [2024-11-16 19:04:11,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 12.188888888888888) internal successors, (1097), 90 states have internal predecessors, (1097), 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) [2024-11-16 19:04:11,354 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:04:11,354 INFO L204 CegarLoopForPetriNet]: trace histogram [25, 24, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:04:11,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-16 19:04:11,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:04:11,556 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:04:11,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:04:11,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1759611851, now seen corresponding path program 1 times [2024-11-16 19:04:11,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:04:11,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25223634] [2024-11-16 19:04:11,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:04:11,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:04:11,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:04:13,960 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 0 proven. 603 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:04:13,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:04:13,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25223634] [2024-11-16 19:04:13,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25223634] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:04:13,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526005420] [2024-11-16 19:04:13,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:04:13,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:04:13,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:04:13,964 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) [2024-11-16 19:04:13,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 19:04:14,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:04:14,064 INFO L255 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 85 conjuncts are in the unsatisfiable core [2024-11-16 19:04:14,072 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:04:16,013 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 506 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:04:16,014 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:04:17,919 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 0 proven. 603 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:04:17,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526005420] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:04:17,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:04:17,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 96 [2024-11-16 19:04:17,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476810370] [2024-11-16 19:04:17,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:04:17,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2024-11-16 19:04:17,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:04:17,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2024-11-16 19:04:17,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1241, Invalid=8071, Unknown=0, NotChecked=0, Total=9312 [2024-11-16 19:04:17,930 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-16 19:04:17,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 1624 transitions, 12132 flow. Second operand has 97 states, 97 states have (on average 12.22680412371134) internal successors, (1186), 97 states have internal predecessors, (1186), 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) [2024-11-16 19:04:17,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:04:17,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-16 19:04:17,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand