./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/rfi000_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/rfi000_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 5128c539cd3051e20c09e1924eb0951d5be697be251e10d3c281464ed4c436cd --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 02:30:47,012 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 02:30:47,084 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 02:30:47,088 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 02:30:47,090 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 02:30:47,117 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 02:30:47,118 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 02:30:47,118 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 02:30:47,119 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 02:30:47,120 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 02:30:47,120 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 02:30:47,121 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 02:30:47,122 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 02:30:47,124 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 02:30:47,127 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 02:30:47,127 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 02:30:47,128 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 02:30:47,128 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 02:30:47,128 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 02:30:47,129 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 02:30:47,129 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 02:30:47,132 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 02:30:47,132 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 02:30:47,132 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 02:30:47,133 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 02:30:47,133 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 02:30:47,133 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 02:30:47,133 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 02:30:47,134 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 02:30:47,134 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 02:30:47,134 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 02:30:47,134 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 02:30:47,135 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:30:47,135 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 02:30:47,135 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 02:30:47,136 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 02:30:47,136 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 02:30:47,136 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 02:30:47,137 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 02:30:47,137 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 02:30:47,138 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 02:30:47,138 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 02:30:47,139 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5128c539cd3051e20c09e1924eb0951d5be697be251e10d3c281464ed4c436cd [2024-11-09 02:30:47,437 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 02:30:47,461 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 02:30:47,464 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 02:30:47,465 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 02:30:47,465 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 02:30:47,466 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/rfi000_tso.i [2024-11-09 02:30:48,921 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 02:30:49,173 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 02:30:49,174 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/rfi000_tso.i [2024-11-09 02:30:49,195 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb94654b5/07252b06042140819a2e0aa5cd0c2a57/FLAGe0064284f [2024-11-09 02:30:49,210 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb94654b5/07252b06042140819a2e0aa5cd0c2a57 [2024-11-09 02:30:49,214 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 02:30:49,215 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 02:30:49,217 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 02:30:49,217 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 02:30:49,223 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 02:30:49,224 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:30:49" (1/1) ... [2024-11-09 02:30:49,225 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@503f34d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:30:49, skipping insertion in model container [2024-11-09 02:30:49,225 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:30:49" (1/1) ... [2024-11-09 02:30:49,272 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 02:30:49,469 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/rfi000_tso.i[944,957] [2024-11-09 02:30:49,726 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:30:49,742 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 02:30:49,756 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/rfi000_tso.i[944,957] [2024-11-09 02:30:49,821 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:30:49,865 INFO L204 MainTranslator]: Completed translation [2024-11-09 02:30:49,866 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:30:49 WrapperNode [2024-11-09 02:30:49,867 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 02:30:49,869 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 02:30:49,869 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 02:30:49,869 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 02:30:49,876 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:30:49" (1/1) ... [2024-11-09 02:30:49,896 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:30:49" (1/1) ... [2024-11-09 02:30:49,937 INFO L138 Inliner]: procedures = 174, calls = 37, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 167 [2024-11-09 02:30:49,937 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 02:30:49,938 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 02:30:49,938 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 02:30:49,939 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 02:30:49,950 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:30:49" (1/1) ... [2024-11-09 02:30:49,950 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:30:49" (1/1) ... [2024-11-09 02:30:49,954 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:30:49" (1/1) ... [2024-11-09 02:30:49,985 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]. [2024-11-09 02:30:49,985 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:30:49" (1/1) ... [2024-11-09 02:30:49,986 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:30:49" (1/1) ... [2024-11-09 02:30:49,995 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:30:49" (1/1) ... [2024-11-09 02:30:50,001 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:30:49" (1/1) ... [2024-11-09 02:30:50,006 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:30:49" (1/1) ... [2024-11-09 02:30:50,008 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:30:49" (1/1) ... [2024-11-09 02:30:50,014 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 02:30:50,019 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 02:30:50,019 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 02:30:50,019 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 02:30:50,020 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:30:49" (1/1) ... [2024-11-09 02:30:50,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:30:50,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:30:50,054 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) [2024-11-09 02:30:50,057 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 [2024-11-09 02:30:50,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-09 02:30:50,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 02:30:50,104 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-11-09 02:30:50,104 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-11-09 02:30:50,104 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-11-09 02:30:50,104 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-11-09 02:30:50,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 02:30:50,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-09 02:30:50,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 02:30:50,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 02:30:50,108 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 02:30:50,295 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 02:30:50,297 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 02:30:50,672 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 02:30:50,672 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 02:30:50,903 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 02:30:50,903 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 02:30:50,904 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:30:50 BoogieIcfgContainer [2024-11-09 02:30:50,904 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 02:30:50,906 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 02:30:50,906 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 02:30:50,911 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 02:30:50,911 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 02:30:49" (1/3) ... [2024-11-09 02:30:50,912 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c6f157 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:30:50, skipping insertion in model container [2024-11-09 02:30:50,912 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:30:49" (2/3) ... [2024-11-09 02:30:50,913 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c6f157 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:30:50, skipping insertion in model container [2024-11-09 02:30:50,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:30:50" (3/3) ... [2024-11-09 02:30:50,916 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi000_tso.i [2024-11-09 02:30:50,933 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 02:30:50,934 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-09 02:30:50,934 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 02:30:50,999 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 02:30:51,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 32 transitions, 72 flow [2024-11-09 02:30:51,073 INFO L124 PetriNetUnfolderBase]: 1/30 cut-off events. [2024-11-09 02:30:51,074 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 02:30:51,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 30 events. 1/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 48 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2024-11-09 02:30:51,079 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 32 transitions, 72 flow [2024-11-09 02:30:51,082 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 30 transitions, 66 flow [2024-11-09 02:30:51,094 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:30:51,104 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;@6a9fd16f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:30:51,105 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-09 02:30:51,111 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:30:51,112 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2024-11-09 02:30:51,112 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 02:30:51,112 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:30:51,113 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:30:51,114 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 02:30:51,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:30:51,120 INFO L85 PathProgramCache]: Analyzing trace with hash -710585529, now seen corresponding path program 1 times [2024-11-09 02:30:51,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:30:51,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500387987] [2024-11-09 02:30:51,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:30:51,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:30:51,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:30:51,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:30:51,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:30:51,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500387987] [2024-11-09 02:30:51,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500387987] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:30:51,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:30:51,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 02:30:51,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551853093] [2024-11-09 02:30:51,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:30:51,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:30:51,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:30:51,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:30:51,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:30:51,662 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 32 [2024-11-09 02:30:51,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 30 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2024-11-09 02:30:51,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:30:51,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 32 [2024-11-09 02:30:51,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:30:51,914 INFO L124 PetriNetUnfolderBase]: 176/352 cut-off events. [2024-11-09 02:30:51,918 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 02:30:51,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 673 conditions, 352 events. 176/352 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1764 event pairs, 16 based on Foata normal form. 18/361 useless extension candidates. Maximal degree in co-relation 663. Up to 266 conditions per place. [2024-11-09 02:30:51,925 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 21 selfloop transitions, 2 changer transitions 2/36 dead transitions. [2024-11-09 02:30:51,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 36 transitions, 128 flow [2024-11-09 02:30:51,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:30:51,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:30:51,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 67 transitions. [2024-11-09 02:30:51,939 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6979166666666666 [2024-11-09 02:30:51,941 INFO L175 Difference]: Start difference. First operand has 36 places, 30 transitions, 66 flow. Second operand 3 states and 67 transitions. [2024-11-09 02:30:51,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 36 transitions, 128 flow [2024-11-09 02:30:51,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 36 transitions, 126 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 02:30:51,946 INFO L231 Difference]: Finished difference. Result has 35 places, 27 transitions, 62 flow [2024-11-09 02:30:51,948 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=35, PETRI_TRANSITIONS=27} [2024-11-09 02:30:51,953 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -1 predicate places. [2024-11-09 02:30:51,953 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 27 transitions, 62 flow [2024-11-09 02:30:51,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2024-11-09 02:30:51,954 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:30:51,954 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:30:51,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 02:30:51,955 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 02:30:51,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:30:51,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1753067114, now seen corresponding path program 1 times [2024-11-09 02:30:51,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:30:51,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538909745] [2024-11-09 02:30:51,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:30:51,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:30:52,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:30:52,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:30:52,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:30:52,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538909745] [2024-11-09 02:30:52,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538909745] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:30:52,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:30:52,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:30:52,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549013702] [2024-11-09 02:30:52,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:30:52,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:30:52,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:30:52,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:30:52,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:30:52,299 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-11-09 02:30:52,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 27 transitions, 62 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2024-11-09 02:30:52,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:30:52,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-11-09 02:30:52,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:30:52,519 INFO L124 PetriNetUnfolderBase]: 221/465 cut-off events. [2024-11-09 02:30:52,519 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-11-09 02:30:52,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 905 conditions, 465 events. 221/465 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2249 event pairs, 38 based on Foata normal form. 28/471 useless extension candidates. Maximal degree in co-relation 895. Up to 216 conditions per place. [2024-11-09 02:30:52,526 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 34 selfloop transitions, 4 changer transitions 1/47 dead transitions. [2024-11-09 02:30:52,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 47 transitions, 186 flow [2024-11-09 02:30:52,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 02:30:52,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 02:30:52,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 81 transitions. [2024-11-09 02:30:52,528 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6328125 [2024-11-09 02:30:52,528 INFO L175 Difference]: Start difference. First operand has 35 places, 27 transitions, 62 flow. Second operand 4 states and 81 transitions. [2024-11-09 02:30:52,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 47 transitions, 186 flow [2024-11-09 02:30:52,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 47 transitions, 178 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 02:30:52,530 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 84 flow [2024-11-09 02:30:52,532 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=84, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2024-11-09 02:30:52,532 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 1 predicate places. [2024-11-09 02:30:52,532 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 84 flow [2024-11-09 02:30:52,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2024-11-09 02:30:52,533 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:30:52,533 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:30:52,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 02:30:52,534 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 02:30:52,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:30:52,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1039214016, now seen corresponding path program 1 times [2024-11-09 02:30:52,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:30:52,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679518410] [2024-11-09 02:30:52,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:30:52,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:30:52,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:30:52,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:30:52,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:30:52,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679518410] [2024-11-09 02:30:52,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679518410] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:30:52,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:30:52,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:30:52,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021363773] [2024-11-09 02:30:52,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:30:52,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:30:52,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:30:52,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:30:52,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:30:52,903 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-11-09 02:30:52,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 84 flow. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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) [2024-11-09 02:30:52,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:30:52,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-11-09 02:30:52,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:30:53,051 INFO L124 PetriNetUnfolderBase]: 110/232 cut-off events. [2024-11-09 02:30:53,051 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2024-11-09 02:30:53,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 549 conditions, 232 events. 110/232 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 809 event pairs, 26 based on Foata normal form. 18/242 useless extension candidates. Maximal degree in co-relation 537. Up to 101 conditions per place. [2024-11-09 02:30:53,054 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 28 selfloop transitions, 6 changer transitions 1/43 dead transitions. [2024-11-09 02:30:53,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 43 transitions, 187 flow [2024-11-09 02:30:53,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:30:53,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:30:53,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 87 transitions. [2024-11-09 02:30:53,056 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.54375 [2024-11-09 02:30:53,056 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 84 flow. Second operand 5 states and 87 transitions. [2024-11-09 02:30:53,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 43 transitions, 187 flow [2024-11-09 02:30:53,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 43 transitions, 178 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-09 02:30:53,058 INFO L231 Difference]: Finished difference. Result has 41 places, 29 transitions, 100 flow [2024-11-09 02:30:53,058 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=100, PETRI_PLACES=41, PETRI_TRANSITIONS=29} [2024-11-09 02:30:53,059 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 5 predicate places. [2024-11-09 02:30:53,059 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 29 transitions, 100 flow [2024-11-09 02:30:53,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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) [2024-11-09 02:30:53,059 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:30:53,060 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:30:53,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 02:30:53,060 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 02:30:53,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:30:53,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1541160680, now seen corresponding path program 1 times [2024-11-09 02:30:53,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:30:53,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570876448] [2024-11-09 02:30:53,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:30:53,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:30:53,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:30:56,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:30:56,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:30:56,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570876448] [2024-11-09 02:30:56,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570876448] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:30:56,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:30:56,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-09 02:30:56,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716661231] [2024-11-09 02:30:56,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:30:56,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 02:30:56,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:30:56,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 02:30:56,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-09 02:30:56,871 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-09 02:30:56,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 29 transitions, 100 flow. Second operand has 12 states, 12 states have (on average 12.333333333333334) internal successors, (148), 12 states have internal predecessors, (148), 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) [2024-11-09 02:30:56,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:30:56,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-09 02:30:56,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:30:57,343 INFO L124 PetriNetUnfolderBase]: 130/308 cut-off events. [2024-11-09 02:30:57,343 INFO L125 PetriNetUnfolderBase]: For 104/104 co-relation queries the response was YES. [2024-11-09 02:30:57,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 695 conditions, 308 events. 130/308 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1236 event pairs, 38 based on Foata normal form. 4/307 useless extension candidates. Maximal degree in co-relation 681. Up to 135 conditions per place. [2024-11-09 02:30:57,346 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 25 selfloop transitions, 13 changer transitions 14/63 dead transitions. [2024-11-09 02:30:57,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 63 transitions, 280 flow [2024-11-09 02:30:57,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 02:30:57,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 02:30:57,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-11-09 02:30:57,348 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.509375 [2024-11-09 02:30:57,348 INFO L175 Difference]: Start difference. First operand has 41 places, 29 transitions, 100 flow. Second operand 10 states and 163 transitions. [2024-11-09 02:30:57,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 63 transitions, 280 flow [2024-11-09 02:30:57,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 63 transitions, 246 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-11-09 02:30:57,351 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 147 flow [2024-11-09 02:30:57,351 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=147, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2024-11-09 02:30:57,352 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 13 predicate places. [2024-11-09 02:30:57,352 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 147 flow [2024-11-09 02:30:57,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.333333333333334) internal successors, (148), 12 states have internal predecessors, (148), 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) [2024-11-09 02:30:57,353 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:30:57,353 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:30:57,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 02:30:57,353 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 02:30:57,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:30:57,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1589133984, now seen corresponding path program 2 times [2024-11-09 02:30:57,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:30:57,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23257763] [2024-11-09 02:30:57,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:30:57,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:30:57,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:30:58,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:30:58,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:30:58,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23257763] [2024-11-09 02:30:58,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23257763] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:30:58,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:30:58,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 02:30:58,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911750969] [2024-11-09 02:30:58,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:30:58,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 02:30:58,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:30:58,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 02:30:58,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 02:30:58,180 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-09 02:30:58,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 147 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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) [2024-11-09 02:30:58,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:30:58,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-09 02:30:58,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:30:58,400 INFO L124 PetriNetUnfolderBase]: 174/380 cut-off events. [2024-11-09 02:30:58,400 INFO L125 PetriNetUnfolderBase]: For 54/54 co-relation queries the response was YES. [2024-11-09 02:30:58,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 927 conditions, 380 events. 174/380 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1585 event pairs, 36 based on Foata normal form. 4/376 useless extension candidates. Maximal degree in co-relation 911. Up to 176 conditions per place. [2024-11-09 02:30:58,402 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 28 selfloop transitions, 4 changer transitions 29/70 dead transitions. [2024-11-09 02:30:58,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 70 transitions, 369 flow [2024-11-09 02:30:58,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:30:58,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:30:58,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2024-11-09 02:30:58,404 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.515625 [2024-11-09 02:30:58,404 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 147 flow. Second operand 6 states and 99 transitions. [2024-11-09 02:30:58,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 70 transitions, 369 flow [2024-11-09 02:30:58,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 70 transitions, 352 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-11-09 02:30:58,408 INFO L231 Difference]: Finished difference. Result has 52 places, 35 transitions, 132 flow [2024-11-09 02:30:58,408 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=132, PETRI_PLACES=52, PETRI_TRANSITIONS=35} [2024-11-09 02:30:58,408 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 16 predicate places. [2024-11-09 02:30:58,409 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 35 transitions, 132 flow [2024-11-09 02:30:58,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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) [2024-11-09 02:30:58,409 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:30:58,409 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:30:58,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 02:30:58,410 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 02:30:58,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:30:58,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1239153712, now seen corresponding path program 3 times [2024-11-09 02:30:58,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:30:58,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208261401] [2024-11-09 02:30:58,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:30:58,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:30:58,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:31:00,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:31:00,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:31:00,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208261401] [2024-11-09 02:31:00,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208261401] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:31:00,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:31:00,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 02:31:00,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409804449] [2024-11-09 02:31:00,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:31:00,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 02:31:00,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:31:00,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 02:31:00,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-09 02:31:00,980 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-09 02:31:00,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 35 transitions, 132 flow. Second operand has 11 states, 11 states have (on average 12.454545454545455) internal successors, (137), 11 states have internal predecessors, (137), 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) [2024-11-09 02:31:00,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:31:00,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-09 02:31:00,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:31:01,332 INFO L124 PetriNetUnfolderBase]: 84/216 cut-off events. [2024-11-09 02:31:01,333 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-11-09 02:31:01,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 502 conditions, 216 events. 84/216 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 754 event pairs, 31 based on Foata normal form. 4/215 useless extension candidates. Maximal degree in co-relation 484. Up to 66 conditions per place. [2024-11-09 02:31:01,335 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 17 selfloop transitions, 5 changer transitions 21/54 dead transitions. [2024-11-09 02:31:01,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 54 transitions, 262 flow [2024-11-09 02:31:01,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 02:31:01,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 02:31:01,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-11-09 02:31:01,337 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-11-09 02:31:01,337 INFO L175 Difference]: Start difference. First operand has 52 places, 35 transitions, 132 flow. Second operand 9 states and 140 transitions. [2024-11-09 02:31:01,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 54 transitions, 262 flow [2024-11-09 02:31:01,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 54 transitions, 235 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-11-09 02:31:01,340 INFO L231 Difference]: Finished difference. Result has 54 places, 29 transitions, 106 flow [2024-11-09 02:31:01,340 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=106, PETRI_PLACES=54, PETRI_TRANSITIONS=29} [2024-11-09 02:31:01,341 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 18 predicate places. [2024-11-09 02:31:01,341 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 29 transitions, 106 flow [2024-11-09 02:31:01,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.454545454545455) internal successors, (137), 11 states have internal predecessors, (137), 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) [2024-11-09 02:31:01,341 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:31:01,341 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:31:01,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 02:31:01,341 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 02:31:01,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:31:01,342 INFO L85 PathProgramCache]: Analyzing trace with hash -473308276, now seen corresponding path program 4 times [2024-11-09 02:31:01,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:31:01,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325550428] [2024-11-09 02:31:01,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:31:01,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:31:01,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:31:05,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:31:05,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:31:05,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325550428] [2024-11-09 02:31:05,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325550428] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:31:05,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:31:05,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-09 02:31:05,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647808978] [2024-11-09 02:31:05,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:31:05,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 02:31:05,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:31:05,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 02:31:05,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-09 02:31:05,425 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-09 02:31:05,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 29 transitions, 106 flow. Second operand has 12 states, 12 states have (on average 12.333333333333334) internal successors, (148), 12 states have internal predecessors, (148), 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) [2024-11-09 02:31:05,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:31:05,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-09 02:31:05,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:31:05,897 INFO L124 PetriNetUnfolderBase]: 35/99 cut-off events. [2024-11-09 02:31:05,898 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-11-09 02:31:05,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241 conditions, 99 events. 35/99 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 209 event pairs, 10 based on Foata normal form. 4/101 useless extension candidates. Maximal degree in co-relation 231. Up to 35 conditions per place. [2024-11-09 02:31:05,898 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 0 selfloop transitions, 0 changer transitions 39/39 dead transitions. [2024-11-09 02:31:05,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 39 transitions, 184 flow [2024-11-09 02:31:05,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 02:31:05,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 02:31:05,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 140 transitions. [2024-11-09 02:31:05,902 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-11-09 02:31:05,902 INFO L175 Difference]: Start difference. First operand has 54 places, 29 transitions, 106 flow. Second operand 10 states and 140 transitions. [2024-11-09 02:31:05,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 39 transitions, 184 flow [2024-11-09 02:31:05,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 39 transitions, 158 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-11-09 02:31:05,903 INFO L231 Difference]: Finished difference. Result has 45 places, 0 transitions, 0 flow [2024-11-09 02:31:05,903 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=45, PETRI_TRANSITIONS=0} [2024-11-09 02:31:05,906 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 9 predicate places. [2024-11-09 02:31:05,906 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 0 transitions, 0 flow [2024-11-09 02:31:05,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.333333333333334) internal successors, (148), 12 states have internal predecessors, (148), 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) [2024-11-09 02:31:05,909 INFO L782 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2024-11-09 02:31:05,910 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-11-09 02:31:05,911 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2024-11-09 02:31:05,911 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2024-11-09 02:31:05,911 INFO L782 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-11-09 02:31:05,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 02:31:05,912 INFO L407 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1] [2024-11-09 02:31:05,917 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-09 02:31:05,917 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 02:31:05,924 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 02:31:05 BasicIcfg [2024-11-09 02:31:05,924 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 02:31:05,925 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 02:31:05,925 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 02:31:05,925 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 02:31:05,925 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:30:50" (3/4) ... [2024-11-09 02:31:05,928 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-09 02:31:05,931 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2024-11-09 02:31:05,931 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2024-11-09 02:31:05,938 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 74 nodes and edges [2024-11-09 02:31:05,938 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-11-09 02:31:05,938 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-09 02:31:05,939 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-09 02:31:06,026 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-09 02:31:06,027 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-09 02:31:06,027 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 02:31:06,028 INFO L158 Benchmark]: Toolchain (without parser) took 16812.43ms. Allocated memory was 174.1MB in the beginning and 677.4MB in the end (delta: 503.3MB). Free memory was 130.1MB in the beginning and 315.4MB in the end (delta: -185.3MB). Peak memory consumption was 317.9MB. Max. memory is 16.1GB. [2024-11-09 02:31:06,028 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 100.7MB. Free memory is still 66.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 02:31:06,028 INFO L158 Benchmark]: CACSL2BoogieTranslator took 651.01ms. Allocated memory is still 174.1MB. Free memory was 130.1MB in the beginning and 101.9MB in the end (delta: 28.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2024-11-09 02:31:06,028 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.05ms. Allocated memory is still 174.1MB. Free memory was 101.9MB in the beginning and 98.7MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-09 02:31:06,029 INFO L158 Benchmark]: Boogie Preprocessor took 79.81ms. Allocated memory is still 174.1MB. Free memory was 98.7MB in the beginning and 94.0MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-09 02:31:06,029 INFO L158 Benchmark]: RCFGBuilder took 885.13ms. Allocated memory is still 174.1MB. Free memory was 94.0MB in the beginning and 80.0MB in the end (delta: 14.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-09 02:31:06,029 INFO L158 Benchmark]: TraceAbstraction took 15018.18ms. Allocated memory was 174.1MB in the beginning and 677.4MB in the end (delta: 503.3MB). Free memory was 80.0MB in the beginning and 319.6MB in the end (delta: -239.6MB). Peak memory consumption was 266.8MB. Max. memory is 16.1GB. [2024-11-09 02:31:06,029 INFO L158 Benchmark]: Witness Printer took 102.61ms. Allocated memory is still 677.4MB. Free memory was 319.6MB in the beginning and 315.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-09 02:31:06,032 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 100.7MB. Free memory is still 66.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 651.01ms. Allocated memory is still 174.1MB. Free memory was 130.1MB in the beginning and 101.9MB in the end (delta: 28.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.05ms. Allocated memory is still 174.1MB. Free memory was 101.9MB in the beginning and 98.7MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 79.81ms. Allocated memory is still 174.1MB. Free memory was 98.7MB in the beginning and 94.0MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 885.13ms. Allocated memory is still 174.1MB. Free memory was 94.0MB in the beginning and 80.0MB in the end (delta: 14.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 15018.18ms. Allocated memory was 174.1MB in the beginning and 677.4MB in the end (delta: 503.3MB). Free memory was 80.0MB in the beginning and 319.6MB in the end (delta: -239.6MB). Peak memory consumption was 266.8MB. Max. memory is 16.1GB. * Witness Printer took 102.61ms. Allocated memory is still 677.4MB. Free memory was 319.6MB in the beginning and 315.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 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 5 procedures, 51 locations, 5 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: 14.9s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 246 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 229 mSDsluCounter, 205 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 199 mSDsCounter, 35 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 905 IncrementalHoareTripleChecker+Invalid, 940 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 35 mSolverCounterUnsat, 6 mSDtfsCounter, 905 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=147occurred in iteration=4, InterpolantAutomatonStates: 47, 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, 0.7s SatisfiabilityAnalysisTime, 11.5s InterpolantComputationTime, 132 NumberOfCodeBlocks, 132 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 125 ConstructedInterpolants, 0 QuantifiedInterpolants, 1882 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-09 02:31:06,067 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE