./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe011_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe011_tso.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 c5d6625a918041bec3ddf6b8a37ec84fd94f58444755be51392d35f521d3d51e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 13:35:54,890 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 13:35:54,949 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 13:35:54,954 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 13:35:54,955 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 13:35:54,973 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 13:35:54,973 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 13:35:54,974 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 13:35:54,974 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 13:35:54,974 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 13:35:54,975 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 13:35:54,975 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 13:35:54,975 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 13:35:54,976 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 13:35:54,976 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 13:35:54,976 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 13:35:54,976 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 13:35:54,977 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 13:35:54,977 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 13:35:54,979 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 13:35:54,982 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 13:35:54,982 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 13:35:54,982 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 13:35:54,982 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 13:35:54,983 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 13:35:54,983 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 13:35:54,983 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 13:35:54,983 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 13:35:54,983 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 13:35:54,983 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 13:35:54,984 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 13:35:54,984 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 13:35:54,984 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:35:54,984 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 13:35:54,984 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 13:35:54,985 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 13:35:54,985 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 13:35:54,985 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 13:35:54,987 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 13:35:54,987 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 13:35:54,987 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 13:35:54,987 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 13:35:54,988 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c5d6625a918041bec3ddf6b8a37ec84fd94f58444755be51392d35f521d3d51e [2024-11-22 13:35:55,190 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 13:35:55,207 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 13:35:55,209 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 13:35:55,210 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 13:35:55,210 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 13:35:55,211 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe011_tso.i [2024-11-22 13:35:56,553 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 13:35:56,772 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 13:35:56,772 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe011_tso.i [2024-11-22 13:35:56,791 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e70955c75/3a77719c9d1c4319b5051869f92ae6a6/FLAG36edd1071 [2024-11-22 13:35:56,805 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e70955c75/3a77719c9d1c4319b5051869f92ae6a6 [2024-11-22 13:35:56,807 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 13:35:56,808 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 13:35:56,816 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 13:35:56,816 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 13:35:56,820 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 13:35:56,821 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:35:56" (1/1) ... [2024-11-22 13:35:56,822 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54c7d069 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:35:56, skipping insertion in model container [2024-11-22 13:35:56,822 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:35:56" (1/1) ... [2024-11-22 13:35:56,855 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 13:35:57,073 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-wmm/safe011_tso.i[945,958] [2024-11-22 13:35:57,218 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:35:57,228 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 13:35:57,239 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-wmm/safe011_tso.i[945,958] [2024-11-22 13:35:57,282 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:35:57,315 INFO L204 MainTranslator]: Completed translation [2024-11-22 13:35:57,316 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:35:57 WrapperNode [2024-11-22 13:35:57,316 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 13:35:57,317 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 13:35:57,318 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 13:35:57,318 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 13:35:57,324 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:35:57" (1/1) ... [2024-11-22 13:35:57,338 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:35:57" (1/1) ... [2024-11-22 13:35:57,357 INFO L138 Inliner]: procedures = 175, calls = 41, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2024-11-22 13:35:57,360 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 13:35:57,362 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 13:35:57,362 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 13:35:57,362 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 13:35:57,378 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:35:57" (1/1) ... [2024-11-22 13:35:57,378 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:35:57" (1/1) ... [2024-11-22 13:35:57,380 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:35:57" (1/1) ... [2024-11-22 13:35:57,397 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]. [2024-11-22 13:35:57,397 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:35:57" (1/1) ... [2024-11-22 13:35:57,397 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:35:57" (1/1) ... [2024-11-22 13:35:57,403 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:35:57" (1/1) ... [2024-11-22 13:35:57,405 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:35:57" (1/1) ... [2024-11-22 13:35:57,406 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:35:57" (1/1) ... [2024-11-22 13:35:57,406 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:35:57" (1/1) ... [2024-11-22 13:35:57,411 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 13:35:57,412 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 13:35:57,412 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 13:35:57,412 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 13:35:57,413 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:35:57" (1/1) ... [2024-11-22 13:35:57,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:35:57,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:35:57,441 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) [2024-11-22 13:35:57,443 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 [2024-11-22 13:35:57,476 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-22 13:35:57,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 13:35:57,476 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-11-22 13:35:57,476 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-11-22 13:35:57,476 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-11-22 13:35:57,477 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-11-22 13:35:57,477 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-11-22 13:35:57,477 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-11-22 13:35:57,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 13:35:57,477 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-22 13:35:57,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 13:35:57,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 13:35:57,478 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-22 13:35:57,573 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 13:35:57,575 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 13:35:57,673 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 13:35:57,673 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 13:35:57,724 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 13:35:57,724 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-22 13:35:57,725 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:35:57 BoogieIcfgContainer [2024-11-22 13:35:57,725 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 13:35:57,726 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 13:35:57,726 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 13:35:57,729 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 13:35:57,730 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:35:56" (1/3) ... [2024-11-22 13:35:57,730 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26a56436 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:35:57, skipping insertion in model container [2024-11-22 13:35:57,730 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:35:57" (2/3) ... [2024-11-22 13:35:57,731 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26a56436 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:35:57, skipping insertion in model container [2024-11-22 13:35:57,731 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:35:57" (3/3) ... [2024-11-22 13:35:57,732 INFO L112 eAbstractionObserver]: Analyzing ICFG safe011_tso.i [2024-11-22 13:35:57,747 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 13:35:57,747 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 13:35:57,748 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 13:35:57,780 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-22 13:35:57,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 38 transitions, 88 flow [2024-11-22 13:35:57,829 INFO L124 PetriNetUnfolderBase]: 1/35 cut-off events. [2024-11-22 13:35:57,830 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 13:35:57,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 35 events. 1/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 59 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2024-11-22 13:35:57,837 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 38 transitions, 88 flow [2024-11-22 13:35:57,839 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 32 transitions, 73 flow [2024-11-22 13:35:57,846 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 13:35:57,852 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;@5d76f0c4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 13:35:57,853 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-22 13:35:57,861 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 13:35:57,862 INFO L124 PetriNetUnfolderBase]: 0/31 cut-off events. [2024-11-22 13:35:57,862 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 13:35:57,862 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:35:57,863 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:35:57,863 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:35:57,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:35:57,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1547160918, now seen corresponding path program 1 times [2024-11-22 13:35:57,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:35:57,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126838019] [2024-11-22 13:35:57,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:35:57,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:35:58,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:35:58,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:35:58,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:35:58,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126838019] [2024-11-22 13:35:58,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126838019] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:35:58,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:35:58,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 13:35:58,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671311732] [2024-11-22 13:35:58,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:35:58,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:35:58,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:35:58,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:35:58,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:35:58,404 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-22 13:35:58,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 73 flow. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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) [2024-11-22 13:35:58,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:35:58,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-22 13:35:58,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:35:58,776 INFO L124 PetriNetUnfolderBase]: 1153/2253 cut-off events. [2024-11-22 13:35:58,777 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-11-22 13:35:58,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4099 conditions, 2253 events. 1153/2253 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 16333 event pairs, 332 based on Foata normal form. 76/2274 useless extension candidates. Maximal degree in co-relation 4088. Up to 751 conditions per place. [2024-11-22 13:35:58,793 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 29 selfloop transitions, 6 changer transitions 35/83 dead transitions. [2024-11-22 13:35:58,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 83 transitions, 321 flow [2024-11-22 13:35:58,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 13:35:58,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-22 13:35:58,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-11-22 13:35:58,804 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6917293233082706 [2024-11-22 13:35:58,806 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 73 flow. Second operand 7 states and 184 transitions. [2024-11-22 13:35:58,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 83 transitions, 321 flow [2024-11-22 13:35:58,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 83 transitions, 316 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-22 13:35:58,813 INFO L231 Difference]: Finished difference. Result has 51 places, 37 transitions, 144 flow [2024-11-22 13:35:58,816 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=144, PETRI_PLACES=51, PETRI_TRANSITIONS=37} [2024-11-22 13:35:58,819 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2024-11-22 13:35:58,819 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 37 transitions, 144 flow [2024-11-22 13:35:58,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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) [2024-11-22 13:35:58,820 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:35:58,820 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:35:58,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 13:35:58,821 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:35:58,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:35:58,822 INFO L85 PathProgramCache]: Analyzing trace with hash -447144789, now seen corresponding path program 1 times [2024-11-22 13:35:58,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:35:58,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674411523] [2024-11-22 13:35:58,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:35:58,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:35:58,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:35:59,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:35:59,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:35:59,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674411523] [2024-11-22 13:35:59,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674411523] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:35:59,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:35:59,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:35:59,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598004000] [2024-11-22 13:35:59,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:35:59,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 13:35:59,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:35:59,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 13:35:59,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 13:35:59,052 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-22 13:35:59,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 37 transitions, 144 flow. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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) [2024-11-22 13:35:59,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:35:59,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-22 13:35:59,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:35:59,372 INFO L124 PetriNetUnfolderBase]: 1014/2136 cut-off events. [2024-11-22 13:35:59,373 INFO L125 PetriNetUnfolderBase]: For 2269/2278 co-relation queries the response was YES. [2024-11-22 13:35:59,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5733 conditions, 2136 events. 1014/2136 cut-off events. For 2269/2278 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 15987 event pairs, 149 based on Foata normal form. 79/2174 useless extension candidates. Maximal degree in co-relation 5717. Up to 637 conditions per place. [2024-11-22 13:35:59,385 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 39 selfloop transitions, 10 changer transitions 54/116 dead transitions. [2024-11-22 13:35:59,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 116 transitions, 760 flow [2024-11-22 13:35:59,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 13:35:59,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-22 13:35:59,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 256 transitions. [2024-11-22 13:35:59,388 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6736842105263158 [2024-11-22 13:35:59,388 INFO L175 Difference]: Start difference. First operand has 51 places, 37 transitions, 144 flow. Second operand 10 states and 256 transitions. [2024-11-22 13:35:59,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 116 transitions, 760 flow [2024-11-22 13:35:59,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 116 transitions, 702 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 13:35:59,403 INFO L231 Difference]: Finished difference. Result has 63 places, 44 transitions, 252 flow [2024-11-22 13:35:59,404 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=252, PETRI_PLACES=63, PETRI_TRANSITIONS=44} [2024-11-22 13:35:59,404 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 21 predicate places. [2024-11-22 13:35:59,405 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 44 transitions, 252 flow [2024-11-22 13:35:59,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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) [2024-11-22 13:35:59,405 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:35:59,405 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:35:59,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 13:35:59,406 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:35:59,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:35:59,407 INFO L85 PathProgramCache]: Analyzing trace with hash -269828757, now seen corresponding path program 1 times [2024-11-22 13:35:59,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:35:59,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526499811] [2024-11-22 13:35:59,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:35:59,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:35:59,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:35:59,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:35:59,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:35:59,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526499811] [2024-11-22 13:35:59,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526499811] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:35:59,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:35:59,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:35:59,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654416693] [2024-11-22 13:35:59,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:35:59,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 13:35:59,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:35:59,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 13:35:59,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 13:35:59,567 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-22 13:35:59,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 44 transitions, 252 flow. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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) [2024-11-22 13:35:59,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:35:59,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-22 13:35:59,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:35:59,829 INFO L124 PetriNetUnfolderBase]: 856/1714 cut-off events. [2024-11-22 13:35:59,829 INFO L125 PetriNetUnfolderBase]: For 5086/5086 co-relation queries the response was YES. [2024-11-22 13:35:59,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5650 conditions, 1714 events. 856/1714 cut-off events. For 5086/5086 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 11721 event pairs, 171 based on Foata normal form. 40/1714 useless extension candidates. Maximal degree in co-relation 5625. Up to 589 conditions per place. [2024-11-22 13:35:59,839 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 42 selfloop transitions, 14 changer transitions 38/107 dead transitions. [2024-11-22 13:35:59,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 107 transitions, 810 flow [2024-11-22 13:35:59,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 13:35:59,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-22 13:35:59,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 247 transitions. [2024-11-22 13:35:59,842 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-11-22 13:35:59,842 INFO L175 Difference]: Start difference. First operand has 63 places, 44 transitions, 252 flow. Second operand 10 states and 247 transitions. [2024-11-22 13:35:59,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 107 transitions, 810 flow [2024-11-22 13:35:59,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 107 transitions, 778 flow, removed 16 selfloop flow, removed 0 redundant places. [2024-11-22 13:35:59,854 INFO L231 Difference]: Finished difference. Result has 74 places, 49 transitions, 350 flow [2024-11-22 13:35:59,854 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=350, PETRI_PLACES=74, PETRI_TRANSITIONS=49} [2024-11-22 13:35:59,855 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 32 predicate places. [2024-11-22 13:35:59,856 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 49 transitions, 350 flow [2024-11-22 13:35:59,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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) [2024-11-22 13:35:59,856 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:35:59,856 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:35:59,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 13:35:59,856 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:35:59,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:35:59,858 INFO L85 PathProgramCache]: Analyzing trace with hash 58176476, now seen corresponding path program 1 times [2024-11-22 13:35:59,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:35:59,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163758630] [2024-11-22 13:35:59,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:35:59,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:35:59,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:35:59,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:35:59,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:35:59,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163758630] [2024-11-22 13:35:59,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163758630] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:35:59,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:35:59,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:35:59,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24647356] [2024-11-22 13:35:59,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:35:59,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 13:35:59,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:35:59,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 13:35:59,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 13:35:59,991 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-22 13:35:59,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 49 transitions, 350 flow. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2024-11-22 13:35:59,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:35:59,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-22 13:35:59,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:36:00,328 INFO L124 PetriNetUnfolderBase]: 771/1571 cut-off events. [2024-11-22 13:36:00,328 INFO L125 PetriNetUnfolderBase]: For 6915/6929 co-relation queries the response was YES. [2024-11-22 13:36:00,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5668 conditions, 1571 events. 771/1571 cut-off events. For 6915/6929 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 10883 event pairs, 152 based on Foata normal form. 35/1585 useless extension candidates. Maximal degree in co-relation 5633. Up to 460 conditions per place. [2024-11-22 13:36:00,376 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 38 selfloop transitions, 14 changer transitions 32/97 dead transitions. [2024-11-22 13:36:00,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 97 transitions, 846 flow [2024-11-22 13:36:00,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 13:36:00,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-22 13:36:00,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 230 transitions. [2024-11-22 13:36:00,377 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6052631578947368 [2024-11-22 13:36:00,378 INFO L175 Difference]: Start difference. First operand has 74 places, 49 transitions, 350 flow. Second operand 10 states and 230 transitions. [2024-11-22 13:36:00,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 97 transitions, 846 flow [2024-11-22 13:36:00,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 97 transitions, 780 flow, removed 33 selfloop flow, removed 10 redundant places. [2024-11-22 13:36:00,389 INFO L231 Difference]: Finished difference. Result has 76 places, 52 transitions, 427 flow [2024-11-22 13:36:00,389 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=427, PETRI_PLACES=76, PETRI_TRANSITIONS=52} [2024-11-22 13:36:00,390 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 34 predicate places. [2024-11-22 13:36:00,390 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 52 transitions, 427 flow [2024-11-22 13:36:00,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2024-11-22 13:36:00,390 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:36:00,390 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:36:00,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 13:36:00,391 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:36:00,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:36:00,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1539955744, now seen corresponding path program 1 times [2024-11-22 13:36:00,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:36:00,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757109845] [2024-11-22 13:36:00,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:36:00,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:36:00,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:36:00,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:36:00,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:36:00,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757109845] [2024-11-22 13:36:00,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757109845] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:36:00,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:36:00,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:36:00,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135125944] [2024-11-22 13:36:00,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:36:00,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:36:00,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:36:00,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:36:00,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:36:00,485 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 38 [2024-11-22 13:36:00,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 52 transitions, 427 flow. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 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) [2024-11-22 13:36:00,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:36:00,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 38 [2024-11-22 13:36:00,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:36:00,671 INFO L124 PetriNetUnfolderBase]: 611/1438 cut-off events. [2024-11-22 13:36:00,671 INFO L125 PetriNetUnfolderBase]: For 6690/6775 co-relation queries the response was YES. [2024-11-22 13:36:00,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4823 conditions, 1438 events. 611/1438 cut-off events. For 6690/6775 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 11038 event pairs, 224 based on Foata normal form. 74/1422 useless extension candidates. Maximal degree in co-relation 4787. Up to 526 conditions per place. [2024-11-22 13:36:00,682 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 28 selfloop transitions, 8 changer transitions 20/82 dead transitions. [2024-11-22 13:36:00,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 82 transitions, 709 flow [2024-11-22 13:36:00,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 13:36:00,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-22 13:36:00,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-11-22 13:36:00,683 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6766917293233082 [2024-11-22 13:36:00,683 INFO L175 Difference]: Start difference. First operand has 76 places, 52 transitions, 427 flow. Second operand 7 states and 180 transitions. [2024-11-22 13:36:00,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 82 transitions, 709 flow [2024-11-22 13:36:00,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 82 transitions, 647 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-11-22 13:36:00,695 INFO L231 Difference]: Finished difference. Result has 75 places, 51 transitions, 413 flow [2024-11-22 13:36:00,696 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=413, PETRI_PLACES=75, PETRI_TRANSITIONS=51} [2024-11-22 13:36:00,698 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 33 predicate places. [2024-11-22 13:36:00,698 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 51 transitions, 413 flow [2024-11-22 13:36:00,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 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) [2024-11-22 13:36:00,699 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:36:00,699 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:36:00,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 13:36:00,699 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:36:00,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:36:00,700 INFO L85 PathProgramCache]: Analyzing trace with hash 610401862, now seen corresponding path program 1 times [2024-11-22 13:36:00,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:36:00,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854679358] [2024-11-22 13:36:00,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:36:00,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:36:00,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:36:00,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:36:00,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:36:00,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854679358] [2024-11-22 13:36:00,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854679358] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:36:00,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:36:00,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 13:36:00,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946414308] [2024-11-22 13:36:00,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:36:00,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 13:36:00,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:36:00,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 13:36:00,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-22 13:36:00,869 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-11-22 13:36:00,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 51 transitions, 413 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-11-22 13:36:00,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:36:00,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-11-22 13:36:00,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:36:01,188 INFO L124 PetriNetUnfolderBase]: 1200/2440 cut-off events. [2024-11-22 13:36:01,188 INFO L125 PetriNetUnfolderBase]: For 12178/12187 co-relation queries the response was YES. [2024-11-22 13:36:01,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8334 conditions, 2440 events. 1200/2440 cut-off events. For 12178/12187 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 18531 event pairs, 201 based on Foata normal form. 71/2470 useless extension candidates. Maximal degree in co-relation 8308. Up to 556 conditions per place. [2024-11-22 13:36:01,204 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 39 selfloop transitions, 7 changer transitions 63/121 dead transitions. [2024-11-22 13:36:01,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 121 transitions, 1238 flow [2024-11-22 13:36:01,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 13:36:01,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 13:36:01,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2024-11-22 13:36:01,206 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6228070175438597 [2024-11-22 13:36:01,206 INFO L175 Difference]: Start difference. First operand has 75 places, 51 transitions, 413 flow. Second operand 9 states and 213 transitions. [2024-11-22 13:36:01,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 121 transitions, 1238 flow [2024-11-22 13:36:01,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 121 transitions, 1172 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-11-22 13:36:01,224 INFO L231 Difference]: Finished difference. Result has 79 places, 40 transitions, 284 flow [2024-11-22 13:36:01,224 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=284, PETRI_PLACES=79, PETRI_TRANSITIONS=40} [2024-11-22 13:36:01,226 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 37 predicate places. [2024-11-22 13:36:01,226 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 40 transitions, 284 flow [2024-11-22 13:36:01,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-11-22 13:36:01,226 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:36:01,227 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:36:01,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 13:36:01,227 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:36:01,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:36:01,228 INFO L85 PathProgramCache]: Analyzing trace with hash 960247407, now seen corresponding path program 1 times [2024-11-22 13:36:01,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:36:01,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290011679] [2024-11-22 13:36:01,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:36:01,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:36:01,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:36:01,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:36:01,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:36:01,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290011679] [2024-11-22 13:36:01,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290011679] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:36:01,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:36:01,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 13:36:01,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032191051] [2024-11-22 13:36:01,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:36:01,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:36:01,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:36:01,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:36:01,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:36:01,328 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 38 [2024-11-22 13:36:01,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 40 transitions, 284 flow. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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) [2024-11-22 13:36:01,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:36:01,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 38 [2024-11-22 13:36:01,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:36:01,467 INFO L124 PetriNetUnfolderBase]: 724/1455 cut-off events. [2024-11-22 13:36:01,467 INFO L125 PetriNetUnfolderBase]: For 2594/2640 co-relation queries the response was YES. [2024-11-22 13:36:01,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3718 conditions, 1455 events. 724/1455 cut-off events. For 2594/2640 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 9593 event pairs, 194 based on Foata normal form. 87/1466 useless extension candidates. Maximal degree in co-relation 3691. Up to 631 conditions per place. [2024-11-22 13:36:01,474 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 26 selfloop transitions, 5 changer transitions 0/55 dead transitions. [2024-11-22 13:36:01,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 55 transitions, 380 flow [2024-11-22 13:36:01,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 13:36:01,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 13:36:01,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2024-11-22 13:36:01,475 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.743421052631579 [2024-11-22 13:36:01,475 INFO L175 Difference]: Start difference. First operand has 79 places, 40 transitions, 284 flow. Second operand 4 states and 113 transitions. [2024-11-22 13:36:01,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 55 transitions, 380 flow [2024-11-22 13:36:01,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 55 transitions, 286 flow, removed 17 selfloop flow, removed 17 redundant places. [2024-11-22 13:36:01,481 INFO L231 Difference]: Finished difference. Result has 63 places, 44 transitions, 228 flow [2024-11-22 13:36:01,481 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=228, PETRI_PLACES=63, PETRI_TRANSITIONS=44} [2024-11-22 13:36:01,482 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 21 predicate places. [2024-11-22 13:36:01,482 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 44 transitions, 228 flow [2024-11-22 13:36:01,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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) [2024-11-22 13:36:01,483 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:36:01,483 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] [2024-11-22 13:36:01,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 13:36:01,483 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:36:01,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:36:01,484 INFO L85 PathProgramCache]: Analyzing trace with hash 912476548, now seen corresponding path program 1 times [2024-11-22 13:36:01,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:36:01,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667359085] [2024-11-22 13:36:01,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:36:01,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:36:01,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:36:01,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:36:01,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:36:01,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667359085] [2024-11-22 13:36:01,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667359085] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:36:01,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:36:01,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 13:36:01,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625969581] [2024-11-22 13:36:01,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:36:01,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:36:01,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:36:01,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:36:01,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:36:01,578 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 38 [2024-11-22 13:36:01,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 44 transitions, 228 flow. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 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) [2024-11-22 13:36:01,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:36:01,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 38 [2024-11-22 13:36:01,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:36:01,689 INFO L124 PetriNetUnfolderBase]: 587/1172 cut-off events. [2024-11-22 13:36:01,689 INFO L125 PetriNetUnfolderBase]: For 630/951 co-relation queries the response was YES. [2024-11-22 13:36:01,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3011 conditions, 1172 events. 587/1172 cut-off events. For 630/951 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 6918 event pairs, 57 based on Foata normal form. 95/1206 useless extension candidates. Maximal degree in co-relation 2993. Up to 520 conditions per place. [2024-11-22 13:36:01,695 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 27 selfloop transitions, 8 changer transitions 9/65 dead transitions. [2024-11-22 13:36:01,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 65 transitions, 373 flow [2024-11-22 13:36:01,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:36:01,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:36:01,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 143 transitions. [2024-11-22 13:36:01,696 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7526315789473684 [2024-11-22 13:36:01,696 INFO L175 Difference]: Start difference. First operand has 63 places, 44 transitions, 228 flow. Second operand 5 states and 143 transitions. [2024-11-22 13:36:01,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 65 transitions, 373 flow [2024-11-22 13:36:01,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 65 transitions, 348 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-11-22 13:36:01,701 INFO L231 Difference]: Finished difference. Result has 64 places, 42 transitions, 217 flow [2024-11-22 13:36:01,701 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=217, PETRI_PLACES=64, PETRI_TRANSITIONS=42} [2024-11-22 13:36:01,701 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 22 predicate places. [2024-11-22 13:36:01,702 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 42 transitions, 217 flow [2024-11-22 13:36:01,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 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) [2024-11-22 13:36:01,704 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:36:01,705 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:36:01,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 13:36:01,705 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:36:01,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:36:01,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1707616869, now seen corresponding path program 1 times [2024-11-22 13:36:01,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:36:01,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995397775] [2024-11-22 13:36:01,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:36:01,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:36:01,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:36:01,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:36:01,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:36:01,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995397775] [2024-11-22 13:36:01,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995397775] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:36:01,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:36:01,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:36:01,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355033142] [2024-11-22 13:36:01,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:36:01,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 13:36:01,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:36:01,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 13:36:01,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-22 13:36:01,809 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 38 [2024-11-22 13:36:01,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 42 transitions, 217 flow. Second operand has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 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) [2024-11-22 13:36:01,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:36:01,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 38 [2024-11-22 13:36:01,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:36:01,900 INFO L124 PetriNetUnfolderBase]: 313/595 cut-off events. [2024-11-22 13:36:01,900 INFO L125 PetriNetUnfolderBase]: For 974/1313 co-relation queries the response was YES. [2024-11-22 13:36:01,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1828 conditions, 595 events. 313/595 cut-off events. For 974/1313 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2790 event pairs, 17 based on Foata normal form. 72/629 useless extension candidates. Maximal degree in co-relation 1812. Up to 248 conditions per place. [2024-11-22 13:36:01,903 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 0 selfloop transitions, 0 changer transitions 57/57 dead transitions. [2024-11-22 13:36:01,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 57 transitions, 330 flow [2024-11-22 13:36:01,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 13:36:01,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 13:36:01,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 161 transitions. [2024-11-22 13:36:01,905 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.706140350877193 [2024-11-22 13:36:01,905 INFO L175 Difference]: Start difference. First operand has 64 places, 42 transitions, 217 flow. Second operand 6 states and 161 transitions. [2024-11-22 13:36:01,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 57 transitions, 330 flow [2024-11-22 13:36:01,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 57 transitions, 293 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-11-22 13:36:01,907 INFO L231 Difference]: Finished difference. Result has 58 places, 0 transitions, 0 flow [2024-11-22 13:36:01,908 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=58, PETRI_TRANSITIONS=0} [2024-11-22 13:36:01,909 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 16 predicate places. [2024-11-22 13:36:01,909 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 0 transitions, 0 flow [2024-11-22 13:36:01,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 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) [2024-11-22 13:36:01,912 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-11-22 13:36:01,913 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-11-22 13:36:01,913 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-11-22 13:36:01,913 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-22 13:36:01,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 13:36:01,913 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:36:01,916 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-22 13:36:01,919 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-22 13:36:01,925 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:36:01 BasicIcfg [2024-11-22 13:36:01,926 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-22 13:36:01,926 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-22 13:36:01,926 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-22 13:36:01,926 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-22 13:36:01,927 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:35:57" (3/4) ... [2024-11-22 13:36:01,930 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-22 13:36:01,933 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2024-11-22 13:36:01,934 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2024-11-22 13:36:01,934 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2024-11-22 13:36:01,937 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 36 nodes and edges [2024-11-22 13:36:01,939 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-22 13:36:01,939 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-22 13:36:01,939 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-22 13:36:02,015 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-22 13:36:02,015 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-22 13:36:02,016 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-22 13:36:02,016 INFO L158 Benchmark]: Toolchain (without parser) took 5207.82ms. Allocated memory was 159.4MB in the beginning and 323.0MB in the end (delta: 163.6MB). Free memory was 87.7MB in the beginning and 139.9MB in the end (delta: -52.3MB). Peak memory consumption was 113.6MB. Max. memory is 16.1GB. [2024-11-22 13:36:02,016 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 159.4MB. Free memory was 114.4MB in the beginning and 114.2MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-22 13:36:02,017 INFO L158 Benchmark]: CACSL2BoogieTranslator took 500.63ms. Allocated memory is still 159.4MB. Free memory was 87.6MB in the beginning and 117.9MB in the end (delta: -30.3MB). Peak memory consumption was 15.4MB. Max. memory is 16.1GB. [2024-11-22 13:36:02,017 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.05ms. Allocated memory is still 159.4MB. Free memory was 117.9MB in the beginning and 115.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-22 13:36:02,017 INFO L158 Benchmark]: Boogie Preprocessor took 49.41ms. Allocated memory is still 159.4MB. Free memory was 115.8MB in the beginning and 113.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-22 13:36:02,017 INFO L158 Benchmark]: RCFGBuilder took 313.02ms. Allocated memory is still 159.4MB. Free memory was 113.7MB in the beginning and 94.8MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-11-22 13:36:02,017 INFO L158 Benchmark]: TraceAbstraction took 4199.32ms. Allocated memory was 159.4MB in the beginning and 323.0MB in the end (delta: 163.6MB). Free memory was 93.6MB in the beginning and 144.1MB in the end (delta: -50.5MB). Peak memory consumption was 112.9MB. Max. memory is 16.1GB. [2024-11-22 13:36:02,018 INFO L158 Benchmark]: Witness Printer took 89.55ms. Allocated memory is still 323.0MB. Free memory was 144.1MB in the beginning and 139.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-22 13:36:02,021 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 159.4MB. Free memory was 114.4MB in the beginning and 114.2MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 500.63ms. Allocated memory is still 159.4MB. Free memory was 87.6MB in the beginning and 117.9MB in the end (delta: -30.3MB). Peak memory consumption was 15.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.05ms. Allocated memory is still 159.4MB. Free memory was 117.9MB in the beginning and 115.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.41ms. Allocated memory is still 159.4MB. Free memory was 115.8MB in the beginning and 113.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 313.02ms. Allocated memory is still 159.4MB. Free memory was 113.7MB in the beginning and 94.8MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 4199.32ms. Allocated memory was 159.4MB in the beginning and 323.0MB in the end (delta: 163.6MB). Free memory was 93.6MB in the beginning and 144.1MB in the end (delta: -50.5MB). Peak memory consumption was 112.9MB. Max. memory is 16.1GB. * Witness Printer took 89.55ms. Allocated memory is still 323.0MB. Free memory was 144.1MB in the beginning and 139.9MB 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: 18]: 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 7 procedures, 62 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: 4.1s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 429 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 392 mSDsluCounter, 311 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 217 mSDsCounter, 38 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 770 IncrementalHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 38 mSolverCounterUnsat, 94 mSDtfsCounter, 770 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=427occurred in iteration=4, InterpolantAutomatonStates: 68, 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, 1.2s InterpolantComputationTime, 172 NumberOfCodeBlocks, 172 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 163 ConstructedInterpolants, 0 QuantifiedInterpolants, 683 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-22 13:36:02,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE