./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-atomic/szymanski.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 735b3cc8 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.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-atomic/szymanski.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 a3cd4be37ada319d324d40d8d6c18fff519996a186a93f33b3070275487295e3 --- Real Ultimate output --- This is Ultimate 0.3.0-?-735b3cc-m [2025-03-14 00:45:08,779 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-14 00:45:08,834 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-14 00:45:08,837 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-14 00:45:08,839 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-14 00:45:08,857 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-14 00:45:08,858 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-14 00:45:08,858 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-14 00:45:08,859 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-14 00:45:08,859 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-14 00:45:08,860 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-14 00:45:08,860 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-14 00:45:08,860 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-14 00:45:08,860 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-14 00:45:08,861 INFO L153 SettingsManager]: * Use SBE=true [2025-03-14 00:45:08,861 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-14 00:45:08,861 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-14 00:45:08,861 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-14 00:45:08,861 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-14 00:45:08,861 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-14 00:45:08,861 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-14 00:45:08,861 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-14 00:45:08,861 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-14 00:45:08,861 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-14 00:45:08,862 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-14 00:45:08,862 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-14 00:45:08,862 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-14 00:45:08,862 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-14 00:45:08,862 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-14 00:45:08,862 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-14 00:45:08,862 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-14 00:45:08,862 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-14 00:45:08,863 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-14 00:45:08,863 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-14 00:45:08,863 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-14 00:45:08,863 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-14 00:45:08,863 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-14 00:45:08,863 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-14 00:45:08,863 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-14 00:45:08,863 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-14 00:45:08,863 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-14 00:45:08,863 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-14 00:45:08,863 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-14 00:45:08,864 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> a3cd4be37ada319d324d40d8d6c18fff519996a186a93f33b3070275487295e3 [2025-03-14 00:45:09,093 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-14 00:45:09,102 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-14 00:45:09,104 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-14 00:45:09,106 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-14 00:45:09,106 INFO L274 PluginConnector]: CDTParser initialized [2025-03-14 00:45:09,107 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-atomic/szymanski.i [2025-03-14 00:45:10,225 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57823abd2/c87cdf87cf6544ac957bfb97bd3e9c5e/FLAG24111fb5f [2025-03-14 00:45:10,479 INFO L384 CDTParser]: Found 1 translation units. [2025-03-14 00:45:10,480 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/szymanski.i [2025-03-14 00:45:10,489 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57823abd2/c87cdf87cf6544ac957bfb97bd3e9c5e/FLAG24111fb5f [2025-03-14 00:45:10,801 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57823abd2/c87cdf87cf6544ac957bfb97bd3e9c5e [2025-03-14 00:45:10,802 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-14 00:45:10,803 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-14 00:45:10,804 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-14 00:45:10,804 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-14 00:45:10,807 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-14 00:45:10,807 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.03 12:45:10" (1/1) ... [2025-03-14 00:45:10,808 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@316d9f8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:45:10, skipping insertion in model container [2025-03-14 00:45:10,808 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.03 12:45:10" (1/1) ... [2025-03-14 00:45:10,830 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-14 00:45:11,058 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-atomic/szymanski.i[32419,32432] [2025-03-14 00:45:11,064 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-atomic/szymanski.i[32696,32709] [2025-03-14 00:45:11,072 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-14 00:45:11,079 INFO L200 MainTranslator]: Completed pre-run [2025-03-14 00:45:11,116 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-atomic/szymanski.i[32419,32432] [2025-03-14 00:45:11,121 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-atomic/szymanski.i[32696,32709] [2025-03-14 00:45:11,123 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-14 00:45:11,147 INFO L204 MainTranslator]: Completed translation [2025-03-14 00:45:11,148 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:45:11 WrapperNode [2025-03-14 00:45:11,148 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-14 00:45:11,149 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-14 00:45:11,149 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-14 00:45:11,149 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-14 00:45:11,153 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:45:11" (1/1) ... [2025-03-14 00:45:11,161 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:45:11" (1/1) ... [2025-03-14 00:45:11,173 INFO L138 Inliner]: procedures = 166, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 29 [2025-03-14 00:45:11,174 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-14 00:45:11,174 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-14 00:45:11,175 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-14 00:45:11,175 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-14 00:45:11,179 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:45:11" (1/1) ... [2025-03-14 00:45:11,179 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:45:11" (1/1) ... [2025-03-14 00:45:11,181 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:45:11" (1/1) ... [2025-03-14 00:45:11,190 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]. [2025-03-14 00:45:11,190 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:45:11" (1/1) ... [2025-03-14 00:45:11,190 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:45:11" (1/1) ... [2025-03-14 00:45:11,194 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:45:11" (1/1) ... [2025-03-14 00:45:11,194 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:45:11" (1/1) ... [2025-03-14 00:45:11,195 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:45:11" (1/1) ... [2025-03-14 00:45:11,195 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:45:11" (1/1) ... [2025-03-14 00:45:11,196 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-14 00:45:11,198 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-14 00:45:11,198 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-14 00:45:11,198 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-14 00:45:11,199 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:45:11" (1/1) ... [2025-03-14 00:45:11,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-14 00:45:11,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 00:45:11,222 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) [2025-03-14 00:45:11,223 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 [2025-03-14 00:45:11,239 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2025-03-14 00:45:11,240 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2025-03-14 00:45:11,240 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-03-14 00:45:11,240 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-03-14 00:45:11,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-14 00:45:11,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-14 00:45:11,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-14 00:45:11,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-14 00:45:11,241 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-14 00:45:11,327 INFO L256 CfgBuilder]: Building ICFG [2025-03-14 00:45:11,329 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-14 00:45:11,416 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-14 00:45:11,416 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-14 00:45:11,416 INFO L318 CfgBuilder]: Performing block encoding [2025-03-14 00:45:11,475 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-14 00:45:11,476 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.03 12:45:11 BoogieIcfgContainer [2025-03-14 00:45:11,476 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-14 00:45:11,477 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-14 00:45:11,477 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-14 00:45:11,481 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-14 00:45:11,481 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.03 12:45:10" (1/3) ... [2025-03-14 00:45:11,482 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25b8422b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.03 12:45:11, skipping insertion in model container [2025-03-14 00:45:11,483 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:45:11" (2/3) ... [2025-03-14 00:45:11,483 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25b8422b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.03 12:45:11, skipping insertion in model container [2025-03-14 00:45:11,483 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.03 12:45:11" (3/3) ... [2025-03-14 00:45:11,484 INFO L128 eAbstractionObserver]: Analyzing ICFG szymanski.i [2025-03-14 00:45:11,496 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-14 00:45:11,498 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG szymanski.i that has 3 procedures, 41 locations, 1 initial locations, 8 loop locations, and 2 error locations. [2025-03-14 00:45:11,498 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-14 00:45:11,536 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-14 00:45:11,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 52 transitions, 118 flow [2025-03-14 00:45:11,599 INFO L124 PetriNetUnfolderBase]: 12/50 cut-off events. [2025-03-14 00:45:11,603 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-14 00:45:11,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 50 events. 12/50 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 70 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 47. Up to 3 conditions per place. [2025-03-14 00:45:11,608 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 52 transitions, 118 flow [2025-03-14 00:45:11,611 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 48 transitions, 105 flow [2025-03-14 00:45:11,619 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-14 00:45:11,630 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;@28cf7a0a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-14 00:45:11,631 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-03-14 00:45:11,640 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-14 00:45:11,642 INFO L124 PetriNetUnfolderBase]: 10/35 cut-off events. [2025-03-14 00:45:11,642 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-14 00:45:11,642 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:45:11,643 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 00:45:11,643 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-14 00:45:11,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:45:11,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1016583843, now seen corresponding path program 1 times [2025-03-14 00:45:11,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:45:11,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203316574] [2025-03-14 00:45:11,654 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 00:45:11,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:45:11,711 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-14 00:45:11,718 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-14 00:45:11,718 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 00:45:11,719 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:45:11,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 00:45:11,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:45:11,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203316574] [2025-03-14 00:45:11,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203316574] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 00:45:11,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 00:45:11,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-14 00:45:11,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727683871] [2025-03-14 00:45:11,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 00:45:11,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 00:45:11,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:45:11,818 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 00:45:11,818 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 00:45:11,827 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 52 [2025-03-14 00:45:11,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 48 transitions, 105 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2025-03-14 00:45:11,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:45:11,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 52 [2025-03-14 00:45:11,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 00:45:11,977 INFO L124 PetriNetUnfolderBase]: 294/623 cut-off events. [2025-03-14 00:45:11,978 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2025-03-14 00:45:11,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1097 conditions, 623 events. 294/623 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3213 event pairs, 131 based on Foata normal form. 61/609 useless extension candidates. Maximal degree in co-relation 1024. Up to 269 conditions per place. [2025-03-14 00:45:11,989 INFO L140 encePairwiseOnDemand]: 45/52 looper letters, 29 selfloop transitions, 3 changer transitions 1/57 dead transitions. [2025-03-14 00:45:11,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 57 transitions, 192 flow [2025-03-14 00:45:11,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-14 00:45:11,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-14 00:45:11,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2025-03-14 00:45:12,001 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7435897435897436 [2025-03-14 00:45:12,002 INFO L175 Difference]: Start difference. First operand has 43 places, 48 transitions, 105 flow. Second operand 3 states and 116 transitions. [2025-03-14 00:45:12,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 57 transitions, 192 flow [2025-03-14 00:45:12,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 57 transitions, 185 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-14 00:45:12,011 INFO L231 Difference]: Finished difference. Result has 44 places, 47 transitions, 116 flow [2025-03-14 00:45:12,012 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=44, PETRI_TRANSITIONS=47} [2025-03-14 00:45:12,015 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2025-03-14 00:45:12,016 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 47 transitions, 116 flow [2025-03-14 00:45:12,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2025-03-14 00:45:12,017 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:45:12,017 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 00:45:12,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-14 00:45:12,018 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-14 00:45:12,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:45:12,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1324708225, now seen corresponding path program 1 times [2025-03-14 00:45:12,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:45:12,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803334990] [2025-03-14 00:45:12,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 00:45:12,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:45:12,027 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-14 00:45:12,031 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-14 00:45:12,031 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 00:45:12,031 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:45:12,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 00:45:12,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:45:12,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803334990] [2025-03-14 00:45:12,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803334990] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 00:45:12,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 00:45:12,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-14 00:45:12,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669439313] [2025-03-14 00:45:12,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 00:45:12,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 00:45:12,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:45:12,079 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 00:45:12,079 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 00:45:12,084 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 52 [2025-03-14 00:45:12,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 47 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2025-03-14 00:45:12,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:45:12,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 52 [2025-03-14 00:45:12,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 00:45:12,171 INFO L124 PetriNetUnfolderBase]: 304/619 cut-off events. [2025-03-14 00:45:12,172 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2025-03-14 00:45:12,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1190 conditions, 619 events. 304/619 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3066 event pairs, 157 based on Foata normal form. 25/567 useless extension candidates. Maximal degree in co-relation 696. Up to 333 conditions per place. [2025-03-14 00:45:12,176 INFO L140 encePairwiseOnDemand]: 48/52 looper letters, 28 selfloop transitions, 2 changer transitions 3/57 dead transitions. [2025-03-14 00:45:12,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 57 transitions, 203 flow [2025-03-14 00:45:12,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-14 00:45:12,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-14 00:45:12,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2025-03-14 00:45:12,177 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7243589743589743 [2025-03-14 00:45:12,177 INFO L175 Difference]: Start difference. First operand has 44 places, 47 transitions, 116 flow. Second operand 3 states and 113 transitions. [2025-03-14 00:45:12,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 57 transitions, 203 flow [2025-03-14 00:45:12,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 57 transitions, 197 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-14 00:45:12,180 INFO L231 Difference]: Finished difference. Result has 45 places, 47 transitions, 120 flow [2025-03-14 00:45:12,180 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=45, PETRI_TRANSITIONS=47} [2025-03-14 00:45:12,180 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 2 predicate places. [2025-03-14 00:45:12,180 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 47 transitions, 120 flow [2025-03-14 00:45:12,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2025-03-14 00:45:12,181 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:45:12,181 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 00:45:12,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-14 00:45:12,181 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-14 00:45:12,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:45:12,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1855527921, now seen corresponding path program 1 times [2025-03-14 00:45:12,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:45:12,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753148956] [2025-03-14 00:45:12,182 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 00:45:12,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:45:12,188 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-14 00:45:12,191 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-14 00:45:12,191 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 00:45:12,191 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:45:12,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 00:45:12,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:45:12,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753148956] [2025-03-14 00:45:12,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753148956] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 00:45:12,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 00:45:12,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-14 00:45:12,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926314309] [2025-03-14 00:45:12,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 00:45:12,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 00:45:12,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:45:12,235 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 00:45:12,235 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 00:45:12,248 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 52 [2025-03-14 00:45:12,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 47 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2025-03-14 00:45:12,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:45:12,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 52 [2025-03-14 00:45:12,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 00:45:12,336 INFO L124 PetriNetUnfolderBase]: 385/724 cut-off events. [2025-03-14 00:45:12,336 INFO L125 PetriNetUnfolderBase]: For 132/132 co-relation queries the response was YES. [2025-03-14 00:45:12,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1393 conditions, 724 events. 385/724 cut-off events. For 132/132 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3286 event pairs, 186 based on Foata normal form. 31/719 useless extension candidates. Maximal degree in co-relation 898. Up to 384 conditions per place. [2025-03-14 00:45:12,340 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 32 selfloop transitions, 6 changer transitions 3/61 dead transitions. [2025-03-14 00:45:12,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 61 transitions, 231 flow [2025-03-14 00:45:12,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-14 00:45:12,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-14 00:45:12,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2025-03-14 00:45:12,342 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7435897435897436 [2025-03-14 00:45:12,343 INFO L175 Difference]: Start difference. First operand has 45 places, 47 transitions, 120 flow. Second operand 3 states and 116 transitions. [2025-03-14 00:45:12,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 61 transitions, 231 flow [2025-03-14 00:45:12,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 61 transitions, 229 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-14 00:45:12,344 INFO L231 Difference]: Finished difference. Result has 46 places, 50 transitions, 164 flow [2025-03-14 00:45:12,345 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=46, PETRI_TRANSITIONS=50} [2025-03-14 00:45:12,345 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 3 predicate places. [2025-03-14 00:45:12,345 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 50 transitions, 164 flow [2025-03-14 00:45:12,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2025-03-14 00:45:12,345 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:45:12,346 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 00:45:12,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-14 00:45:12,346 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-14 00:45:12,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:45:12,346 INFO L85 PathProgramCache]: Analyzing trace with hash 805376437, now seen corresponding path program 1 times [2025-03-14 00:45:12,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:45:12,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785153519] [2025-03-14 00:45:12,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 00:45:12,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:45:12,353 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-14 00:45:12,357 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-14 00:45:12,360 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 00:45:12,360 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:45:12,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 00:45:12,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:45:12,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785153519] [2025-03-14 00:45:12,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785153519] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 00:45:12,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 00:45:12,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-14 00:45:12,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831944644] [2025-03-14 00:45:12,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 00:45:12,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 00:45:12,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:45:12,388 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 00:45:12,388 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 00:45:12,399 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 52 [2025-03-14 00:45:12,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 50 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2025-03-14 00:45:12,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:45:12,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 52 [2025-03-14 00:45:12,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 00:45:12,500 INFO L124 PetriNetUnfolderBase]: 431/824 cut-off events. [2025-03-14 00:45:12,501 INFO L125 PetriNetUnfolderBase]: For 396/400 co-relation queries the response was YES. [2025-03-14 00:45:12,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1873 conditions, 824 events. 431/824 cut-off events. For 396/400 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3802 event pairs, 154 based on Foata normal form. 17/783 useless extension candidates. Maximal degree in co-relation 1023. Up to 308 conditions per place. [2025-03-14 00:45:12,507 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 35 selfloop transitions, 9 changer transitions 2/66 dead transitions. [2025-03-14 00:45:12,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 66 transitions, 303 flow [2025-03-14 00:45:12,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-14 00:45:12,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-14 00:45:12,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2025-03-14 00:45:12,510 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7371794871794872 [2025-03-14 00:45:12,510 INFO L175 Difference]: Start difference. First operand has 46 places, 50 transitions, 164 flow. Second operand 3 states and 115 transitions. [2025-03-14 00:45:12,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 66 transitions, 303 flow [2025-03-14 00:45:12,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 66 transitions, 287 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-14 00:45:12,515 INFO L231 Difference]: Finished difference. Result has 48 places, 55 transitions, 222 flow [2025-03-14 00:45:12,515 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=48, PETRI_TRANSITIONS=55} [2025-03-14 00:45:12,516 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 5 predicate places. [2025-03-14 00:45:12,517 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 55 transitions, 222 flow [2025-03-14 00:45:12,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2025-03-14 00:45:12,517 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:45:12,517 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 00:45:12,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-14 00:45:12,517 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-14 00:45:12,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:45:12,519 INFO L85 PathProgramCache]: Analyzing trace with hash 437997139, now seen corresponding path program 2 times [2025-03-14 00:45:12,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:45:12,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498143634] [2025-03-14 00:45:12,519 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 00:45:12,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:45:12,528 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 1 equivalence classes. [2025-03-14 00:45:12,532 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-14 00:45:12,533 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-14 00:45:12,533 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:45:12,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 00:45:12,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:45:12,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498143634] [2025-03-14 00:45:12,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498143634] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 00:45:12,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 00:45:12,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-14 00:45:12,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443162734] [2025-03-14 00:45:12,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 00:45:12,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 00:45:12,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:45:12,561 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 00:45:12,561 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 00:45:12,574 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 52 [2025-03-14 00:45:12,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 55 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2025-03-14 00:45:12,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:45:12,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 52 [2025-03-14 00:45:12,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 00:45:12,654 INFO L124 PetriNetUnfolderBase]: 448/829 cut-off events. [2025-03-14 00:45:12,655 INFO L125 PetriNetUnfolderBase]: For 969/972 co-relation queries the response was YES. [2025-03-14 00:45:12,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2177 conditions, 829 events. 448/829 cut-off events. For 969/972 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3761 event pairs, 213 based on Foata normal form. 19/773 useless extension candidates. Maximal degree in co-relation 1353. Up to 560 conditions per place. [2025-03-14 00:45:12,659 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 41 selfloop transitions, 5 changer transitions 3/67 dead transitions. [2025-03-14 00:45:12,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 67 transitions, 357 flow [2025-03-14 00:45:12,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-14 00:45:12,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-14 00:45:12,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 112 transitions. [2025-03-14 00:45:12,661 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.717948717948718 [2025-03-14 00:45:12,662 INFO L175 Difference]: Start difference. First operand has 48 places, 55 transitions, 222 flow. Second operand 3 states and 112 transitions. [2025-03-14 00:45:12,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 67 transitions, 357 flow [2025-03-14 00:45:12,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 67 transitions, 339 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-14 00:45:12,665 INFO L231 Difference]: Finished difference. Result has 50 places, 54 transitions, 238 flow [2025-03-14 00:45:12,667 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=50, PETRI_TRANSITIONS=54} [2025-03-14 00:45:12,669 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 7 predicate places. [2025-03-14 00:45:12,669 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 54 transitions, 238 flow [2025-03-14 00:45:12,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2025-03-14 00:45:12,670 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:45:12,670 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 00:45:12,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-14 00:45:12,670 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-14 00:45:12,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:45:12,671 INFO L85 PathProgramCache]: Analyzing trace with hash 836454449, now seen corresponding path program 3 times [2025-03-14 00:45:12,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:45:12,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118175508] [2025-03-14 00:45:12,672 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-14 00:45:12,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:45:12,678 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 1 equivalence classes. [2025-03-14 00:45:12,681 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-14 00:45:12,682 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-14 00:45:12,682 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:45:12,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 00:45:12,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:45:12,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118175508] [2025-03-14 00:45:12,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118175508] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 00:45:12,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 00:45:12,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-14 00:45:12,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71882847] [2025-03-14 00:45:12,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 00:45:12,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 00:45:12,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:45:12,710 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 00:45:12,710 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 00:45:12,722 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 52 [2025-03-14 00:45:12,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 54 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2025-03-14 00:45:12,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:45:12,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 52 [2025-03-14 00:45:12,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 00:45:12,825 INFO L124 PetriNetUnfolderBase]: 492/925 cut-off events. [2025-03-14 00:45:12,825 INFO L125 PetriNetUnfolderBase]: For 978/1006 co-relation queries the response was YES. [2025-03-14 00:45:12,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2409 conditions, 925 events. 492/925 cut-off events. For 978/1006 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4406 event pairs, 204 based on Foata normal form. 40/937 useless extension candidates. Maximal degree in co-relation 1604. Up to 476 conditions per place. [2025-03-14 00:45:12,829 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 0 selfloop transitions, 0 changer transitions 71/71 dead transitions. [2025-03-14 00:45:12,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 71 transitions, 417 flow [2025-03-14 00:45:12,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-14 00:45:12,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-14 00:45:12,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2025-03-14 00:45:12,830 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7435897435897436 [2025-03-14 00:45:12,830 INFO L175 Difference]: Start difference. First operand has 50 places, 54 transitions, 238 flow. Second operand 3 states and 116 transitions. [2025-03-14 00:45:12,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 71 transitions, 417 flow [2025-03-14 00:45:12,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 71 transitions, 397 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-03-14 00:45:12,835 INFO L231 Difference]: Finished difference. Result has 48 places, 0 transitions, 0 flow [2025-03-14 00:45:12,835 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=48, PETRI_TRANSITIONS=0} [2025-03-14 00:45:12,835 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 5 predicate places. [2025-03-14 00:45:12,835 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 0 transitions, 0 flow [2025-03-14 00:45:12,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2025-03-14 00:45:12,837 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2025-03-14 00:45:12,837 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2025-03-14 00:45:12,837 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2025-03-14 00:45:12,838 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2025-03-14 00:45:12,838 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2025-03-14 00:45:12,838 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2025-03-14 00:45:12,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-14 00:45:12,838 INFO L422 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2025-03-14 00:45:12,842 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-14 00:45:12,843 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-14 00:45:12,846 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.03 12:45:12 BasicIcfg [2025-03-14 00:45:12,846 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-14 00:45:12,846 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-14 00:45:12,846 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-14 00:45:12,846 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-14 00:45:12,847 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.03 12:45:11" (3/4) ... [2025-03-14 00:45:12,848 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-14 00:45:12,849 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thr2 [2025-03-14 00:45:12,850 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thr1 [2025-03-14 00:45:12,851 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2025-03-14 00:45:12,851 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2025-03-14 00:45:12,852 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-03-14 00:45:12,852 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-14 00:45:12,898 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-14 00:45:12,898 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-14 00:45:12,899 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-14 00:45:12,899 INFO L158 Benchmark]: Toolchain (without parser) took 2095.99ms. Allocated memory is still 142.6MB. Free memory was 112.2MB in the beginning and 90.4MB in the end (delta: 21.8MB). Peak memory consumption was 13.1MB. Max. memory is 16.1GB. [2025-03-14 00:45:12,899 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 201.3MB. Free memory is still 123.6MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-14 00:45:12,899 INFO L158 Benchmark]: CACSL2BoogieTranslator took 344.64ms. Allocated memory is still 142.6MB. Free memory was 111.8MB in the beginning and 92.3MB in the end (delta: 19.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-14 00:45:12,900 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.00ms. Allocated memory is still 142.6MB. Free memory was 92.3MB in the beginning and 90.7MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-14 00:45:12,900 INFO L158 Benchmark]: Boogie Preprocessor took 22.64ms. Allocated memory is still 142.6MB. Free memory was 90.7MB in the beginning and 89.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-14 00:45:12,900 INFO L158 Benchmark]: IcfgBuilder took 277.88ms. Allocated memory is still 142.6MB. Free memory was 89.4MB in the beginning and 70.8MB in the end (delta: 18.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-14 00:45:12,900 INFO L158 Benchmark]: TraceAbstraction took 1368.52ms. Allocated memory is still 142.6MB. Free memory was 70.3MB in the beginning and 94.9MB in the end (delta: -24.5MB). Peak memory consumption was 29.9MB. Max. memory is 16.1GB. [2025-03-14 00:45:12,900 INFO L158 Benchmark]: Witness Printer took 52.47ms. Allocated memory is still 142.6MB. Free memory was 94.9MB in the beginning and 90.4MB in the end (delta: 4.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-14 00:45:12,902 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 201.3MB. Free memory is still 123.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 344.64ms. Allocated memory is still 142.6MB. Free memory was 111.8MB in the beginning and 92.3MB in the end (delta: 19.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.00ms. Allocated memory is still 142.6MB. Free memory was 92.3MB in the beginning and 90.7MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.64ms. Allocated memory is still 142.6MB. Free memory was 90.7MB in the beginning and 89.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 277.88ms. Allocated memory is still 142.6MB. Free memory was 89.4MB in the beginning and 70.8MB in the end (delta: 18.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1368.52ms. Allocated memory is still 142.6MB. Free memory was 70.3MB in the beginning and 94.9MB in the end (delta: -24.5MB). Peak memory consumption was 29.9MB. Max. memory is 16.1GB. * Witness Printer took 52.47ms. Allocated memory is still 142.6MB. Free memory was 94.9MB in the beginning and 90.4MB in the end (delta: 4.5MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 760]: 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: 744]: 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, 75 locations, 6 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: 1.3s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 170 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 95 mSDsluCounter, 42 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 364 IncrementalHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 42 mSDtfsCounter, 364 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=238occurred in iteration=5, InterpolantAutomatonStates: 18, 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, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 104 NumberOfCodeBlocks, 104 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 98 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-14 00:45:12,913 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