./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe034_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe034_tso.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 f95cec1ef19619129f583fb8c66d7deea9b3c11be41d52b59a1e2cd5f199d72e --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 01:06:21,617 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 01:06:21,668 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-08 01:06:21,675 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 01:06:21,678 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 01:06:21,702 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 01:06:21,703 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 01:06:21,703 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 01:06:21,704 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 01:06:21,704 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 01:06:21,705 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 01:06:21,705 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 01:06:21,705 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 01:06:21,705 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 01:06:21,705 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 01:06:21,705 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 01:06:21,706 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 01:06:21,706 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 01:06:21,706 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 01:06:21,706 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 01:06:21,706 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 01:06:21,706 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 01:06:21,706 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 01:06:21,706 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 01:06:21,707 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 01:06:21,707 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 01:06:21,707 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 01:06:21,707 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 01:06:21,707 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 01:06:21,707 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 01:06:21,707 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 01:06:21,707 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 01:06:21,707 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:06:21,707 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 01:06:21,708 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 01:06:21,708 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 01:06:21,708 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 01:06:21,708 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 01:06:21,708 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 01:06:21,708 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 01:06:21,708 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 01:06:21,709 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 01:06:21,709 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 01:06:21,709 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-jdk21/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 -> f95cec1ef19619129f583fb8c66d7deea9b3c11be41d52b59a1e2cd5f199d72e [2025-02-08 01:06:22,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 01:06:22,064 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 01:06:22,068 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 01:06:22,069 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 01:06:22,069 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 01:06:22,070 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe034_tso.i [2025-02-08 01:06:23,418 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bf85cee01/156497c656254818894a25a3922ccd87/FLAG93cf720ce [2025-02-08 01:06:23,675 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 01:06:23,676 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe034_tso.i [2025-02-08 01:06:23,693 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bf85cee01/156497c656254818894a25a3922ccd87/FLAG93cf720ce [2025-02-08 01:06:23,708 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bf85cee01/156497c656254818894a25a3922ccd87 [2025-02-08 01:06:23,709 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 01:06:23,711 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 01:06:23,712 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 01:06:23,712 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 01:06:23,715 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 01:06:23,716 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:06:23" (1/1) ... [2025-02-08 01:06:23,717 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dd4dd3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:06:23, skipping insertion in model container [2025-02-08 01:06:23,718 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:06:23" (1/1) ... [2025-02-08 01:06:23,744 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 01:06:23,872 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe034_tso.i[945,958] [2025-02-08 01:06:23,994 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:06:24,002 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 01:06:24,010 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe034_tso.i[945,958] [2025-02-08 01:06:24,043 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:06:24,072 INFO L204 MainTranslator]: Completed translation [2025-02-08 01:06:24,073 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:06:24 WrapperNode [2025-02-08 01:06:24,073 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 01:06:24,074 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 01:06:24,074 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 01:06:24,074 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 01:06:24,079 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:06:24" (1/1) ... [2025-02-08 01:06:24,091 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:06:24" (1/1) ... [2025-02-08 01:06:24,107 INFO L138 Inliner]: procedures = 175, calls = 45, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2025-02-08 01:06:24,108 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 01:06:24,109 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 01:06:24,109 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 01:06:24,109 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 01:06:24,115 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:06:24" (1/1) ... [2025-02-08 01:06:24,115 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:06:24" (1/1) ... [2025-02-08 01:06:24,117 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:06:24" (1/1) ... [2025-02-08 01:06:24,129 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]. [2025-02-08 01:06:24,130 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:06:24" (1/1) ... [2025-02-08 01:06:24,130 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:06:24" (1/1) ... [2025-02-08 01:06:24,134 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:06:24" (1/1) ... [2025-02-08 01:06:24,136 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:06:24" (1/1) ... [2025-02-08 01:06:24,137 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:06:24" (1/1) ... [2025-02-08 01:06:24,138 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:06:24" (1/1) ... [2025-02-08 01:06:24,139 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 01:06:24,140 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 01:06:24,141 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 01:06:24,141 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 01:06:24,142 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:06:24" (1/1) ... [2025-02-08 01:06:24,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:06:24,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:06:24,170 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 01:06:24,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 01:06:24,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 01:06:24,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 01:06:24,195 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-02-08 01:06:24,195 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-02-08 01:06:24,195 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-02-08 01:06:24,195 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-02-08 01:06:24,195 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-02-08 01:06:24,195 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-02-08 01:06:24,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 01:06:24,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 01:06:24,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 01:06:24,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 01:06:24,196 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 01:06:24,295 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 01:06:24,297 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 01:06:24,440 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 01:06:24,440 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 01:06:24,528 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 01:06:24,529 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 01:06:24,529 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:06:24 BoogieIcfgContainer [2025-02-08 01:06:24,529 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 01:06:24,532 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 01:06:24,532 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 01:06:24,536 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 01:06:24,537 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 01:06:23" (1/3) ... [2025-02-08 01:06:24,537 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@90a444 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:06:24, skipping insertion in model container [2025-02-08 01:06:24,538 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:06:24" (2/3) ... [2025-02-08 01:06:24,538 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@90a444 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:06:24, skipping insertion in model container [2025-02-08 01:06:24,538 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:06:24" (3/3) ... [2025-02-08 01:06:24,539 INFO L128 eAbstractionObserver]: Analyzing ICFG safe034_tso.i [2025-02-08 01:06:24,551 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 01:06:24,553 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG safe034_tso.i that has 4 procedures, 40 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-02-08 01:06:24,553 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 01:06:24,596 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-08 01:06:24,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 40 transitions, 92 flow [2025-02-08 01:06:24,658 INFO L124 PetriNetUnfolderBase]: 1/37 cut-off events. [2025-02-08 01:06:24,659 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 01:06:24,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 37 events. 1/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 64 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2025-02-08 01:06:24,667 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 40 transitions, 92 flow [2025-02-08 01:06:24,669 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 34 transitions, 77 flow [2025-02-08 01:06:24,679 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 01:06:24,692 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;@3fcf9cb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 01:06:24,695 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-02-08 01:06:24,708 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 01:06:24,710 INFO L124 PetriNetUnfolderBase]: 0/33 cut-off events. [2025-02-08 01:06:24,710 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 01:06:24,711 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:06:24,711 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:06:24,712 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:06:24,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:06:24,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1110317910, now seen corresponding path program 1 times [2025-02-08 01:06:24,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:06:24,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014042199] [2025-02-08 01:06:24,725 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:06:24,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:06:24,802 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 01:06:24,842 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 01:06:24,844 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:06:24,844 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:06:25,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:06:25,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:06:25,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014042199] [2025-02-08 01:06:25,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014042199] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:06:25,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:06:25,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 01:06:25,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596218580] [2025-02-08 01:06:25,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:06:25,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:06:25,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:06:25,216 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:06:25,217 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:06:25,223 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2025-02-08 01:06:25,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 77 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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) [2025-02-08 01:06:25,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:06:25,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2025-02-08 01:06:25,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:06:26,571 INFO L124 PetriNetUnfolderBase]: 11080/16199 cut-off events. [2025-02-08 01:06:26,571 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2025-02-08 01:06:26,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32237 conditions, 16199 events. 11080/16199 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 601. Compared 99468 event pairs, 3206 based on Foata normal form. 478/16674 useless extension candidates. Maximal degree in co-relation 32226. Up to 8093 conditions per place. [2025-02-08 01:06:26,734 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 52 selfloop transitions, 5 changer transitions 71/132 dead transitions. [2025-02-08 01:06:26,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 132 transitions, 535 flow [2025-02-08 01:06:26,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 01:06:26,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 01:06:26,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2025-02-08 01:06:26,744 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6392857142857142 [2025-02-08 01:06:26,746 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 77 flow. Second operand 7 states and 179 transitions. [2025-02-08 01:06:26,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 132 transitions, 535 flow [2025-02-08 01:06:26,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 132 transitions, 530 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 01:06:26,752 INFO L231 Difference]: Finished difference. Result has 53 places, 38 transitions, 136 flow [2025-02-08 01:06:26,753 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=136, PETRI_PLACES=53, PETRI_TRANSITIONS=38} [2025-02-08 01:06:26,756 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 9 predicate places. [2025-02-08 01:06:26,756 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 38 transitions, 136 flow [2025-02-08 01:06:26,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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) [2025-02-08 01:06:26,757 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:06:26,757 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:06:26,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 01:06:26,758 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:06:26,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:06:26,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1933664471, now seen corresponding path program 1 times [2025-02-08 01:06:26,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:06:26,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669139652] [2025-02-08 01:06:26,759 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:06:26,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:06:26,769 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 01:06:26,783 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 01:06:26,783 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:06:26,783 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:06:26,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:06:26,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:06:26,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669139652] [2025-02-08 01:06:26,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669139652] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:06:26,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:06:26,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 01:06:26,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686867601] [2025-02-08 01:06:26,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:06:26,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 01:06:26,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:06:26,869 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 01:06:26,869 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 01:06:26,869 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2025-02-08 01:06:26,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 38 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) [2025-02-08 01:06:26,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:06:26,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2025-02-08 01:06:26,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:06:27,416 INFO L124 PetriNetUnfolderBase]: 6513/10113 cut-off events. [2025-02-08 01:06:27,417 INFO L125 PetriNetUnfolderBase]: For 6377/6377 co-relation queries the response was YES. [2025-02-08 01:06:27,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24700 conditions, 10113 events. 6513/10113 cut-off events. For 6377/6377 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 62345 event pairs, 1166 based on Foata normal form. 478/10576 useless extension candidates. Maximal degree in co-relation 24684. Up to 5118 conditions per place. [2025-02-08 01:06:27,468 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 70 selfloop transitions, 5 changer transitions 1/81 dead transitions. [2025-02-08 01:06:27,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 81 transitions, 446 flow [2025-02-08 01:06:27,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 01:06:27,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 01:06:27,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2025-02-08 01:06:27,470 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.65 [2025-02-08 01:06:27,470 INFO L175 Difference]: Start difference. First operand has 53 places, 38 transitions, 136 flow. Second operand 4 states and 104 transitions. [2025-02-08 01:06:27,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 81 transitions, 446 flow [2025-02-08 01:06:27,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 81 transitions, 416 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-02-08 01:06:27,506 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 156 flow [2025-02-08 01:06:27,506 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2025-02-08 01:06:27,506 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 8 predicate places. [2025-02-08 01:06:27,506 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 156 flow [2025-02-08 01:06:27,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) [2025-02-08 01:06:27,507 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:06:27,507 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] [2025-02-08 01:06:27,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 01:06:27,507 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:06:27,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:06:27,507 INFO L85 PathProgramCache]: Analyzing trace with hash -464102589, now seen corresponding path program 1 times [2025-02-08 01:06:27,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:06:27,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710992364] [2025-02-08 01:06:27,508 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:06:27,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:06:27,512 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 01:06:27,517 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:06:27,517 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:06:27,518 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:06:27,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:06:27,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:06:27,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710992364] [2025-02-08 01:06:27,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710992364] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:06:27,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:06:27,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 01:06:27,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913797820] [2025-02-08 01:06:27,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:06:27,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:06:27,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:06:27,646 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:06:27,646 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:06:27,646 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2025-02-08 01:06:27,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 156 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) [2025-02-08 01:06:27,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:06:27,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2025-02-08 01:06:27,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:06:27,960 INFO L124 PetriNetUnfolderBase]: 3744/5814 cut-off events. [2025-02-08 01:06:27,961 INFO L125 PetriNetUnfolderBase]: For 3593/3593 co-relation queries the response was YES. [2025-02-08 01:06:27,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15243 conditions, 5814 events. 3744/5814 cut-off events. For 3593/3593 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 31724 event pairs, 686 based on Foata normal form. 334/6133 useless extension candidates. Maximal degree in co-relation 15225. Up to 2055 conditions per place. [2025-02-08 01:06:27,984 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 89 selfloop transitions, 8 changer transitions 2/104 dead transitions. [2025-02-08 01:06:27,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 104 transitions, 579 flow [2025-02-08 01:06:27,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:06:27,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:06:27,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 133 transitions. [2025-02-08 01:06:27,987 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.665 [2025-02-08 01:06:27,987 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 156 flow. Second operand 5 states and 133 transitions. [2025-02-08 01:06:27,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 104 transitions, 579 flow [2025-02-08 01:06:27,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 104 transitions, 565 flow, removed 3 selfloop flow, removed 4 redundant places. [2025-02-08 01:06:27,993 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 192 flow [2025-02-08 01:06:27,993 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=192, PETRI_PLACES=54, PETRI_TRANSITIONS=44} [2025-02-08 01:06:27,994 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 10 predicate places. [2025-02-08 01:06:27,994 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 192 flow [2025-02-08 01:06:27,995 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) [2025-02-08 01:06:27,995 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:06:27,995 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, 1, 1, 1, 1, 1] [2025-02-08 01:06:27,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 01:06:27,995 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:06:27,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:06:27,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1233537767, now seen corresponding path program 1 times [2025-02-08 01:06:27,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:06:27,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125403695] [2025-02-08 01:06:27,996 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:06:27,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:06:28,004 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-08 01:06:28,014 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-08 01:06:28,014 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:06:28,014 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:06:28,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:06:28,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:06:28,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125403695] [2025-02-08 01:06:28,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125403695] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:06:28,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:06:28,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:06:28,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311843772] [2025-02-08 01:06:28,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:06:28,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 01:06:28,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:06:28,105 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 01:06:28,105 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-02-08 01:06:28,106 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2025-02-08 01:06:28,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 44 transitions, 192 flow. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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) [2025-02-08 01:06:28,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:06:28,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2025-02-08 01:06:28,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:06:28,359 INFO L124 PetriNetUnfolderBase]: 2413/3693 cut-off events. [2025-02-08 01:06:28,360 INFO L125 PetriNetUnfolderBase]: For 3904/3904 co-relation queries the response was YES. [2025-02-08 01:06:28,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10361 conditions, 3693 events. 2413/3693 cut-off events. For 3904/3904 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 18273 event pairs, 591 based on Foata normal form. 120/3798 useless extension candidates. Maximal degree in co-relation 10343. Up to 1410 conditions per place. [2025-02-08 01:06:28,374 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 70 selfloop transitions, 11 changer transitions 5/91 dead transitions. [2025-02-08 01:06:28,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 91 transitions, 520 flow [2025-02-08 01:06:28,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 01:06:28,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 01:06:28,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2025-02-08 01:06:28,376 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.55 [2025-02-08 01:06:28,376 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 192 flow. Second operand 6 states and 132 transitions. [2025-02-08 01:06:28,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 91 transitions, 520 flow [2025-02-08 01:06:28,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 91 transitions, 479 flow, removed 12 selfloop flow, removed 4 redundant places. [2025-02-08 01:06:28,386 INFO L231 Difference]: Finished difference. Result has 57 places, 44 transitions, 198 flow [2025-02-08 01:06:28,387 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=198, PETRI_PLACES=57, PETRI_TRANSITIONS=44} [2025-02-08 01:06:28,387 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 13 predicate places. [2025-02-08 01:06:28,387 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 44 transitions, 198 flow [2025-02-08 01:06:28,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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) [2025-02-08 01:06:28,388 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:06:28,388 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:06:28,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 01:06:28,388 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:06:28,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:06:28,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1405813288, now seen corresponding path program 1 times [2025-02-08 01:06:28,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:06:28,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788709117] [2025-02-08 01:06:28,389 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:06:28,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:06:28,395 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-02-08 01:06:28,402 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-08 01:06:28,403 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:06:28,403 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:06:28,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:06:28,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:06:28,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788709117] [2025-02-08 01:06:28,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788709117] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:06:28,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:06:28,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-08 01:06:28,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910696867] [2025-02-08 01:06:28,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:06:28,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 01:06:28,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:06:28,551 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 01:06:28,551 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-08 01:06:28,555 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2025-02-08 01:06:28,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 198 flow. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 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) [2025-02-08 01:06:28,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:06:28,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2025-02-08 01:06:28,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:06:28,929 INFO L124 PetriNetUnfolderBase]: 3285/5029 cut-off events. [2025-02-08 01:06:28,929 INFO L125 PetriNetUnfolderBase]: For 5210/5210 co-relation queries the response was YES. [2025-02-08 01:06:28,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14122 conditions, 5029 events. 3285/5029 cut-off events. For 5210/5210 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 26353 event pairs, 269 based on Foata normal form. 8/5036 useless extension candidates. Maximal degree in co-relation 14103. Up to 1820 conditions per place. [2025-02-08 01:06:28,946 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 70 selfloop transitions, 8 changer transitions 54/136 dead transitions. [2025-02-08 01:06:28,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 136 transitions, 874 flow [2025-02-08 01:06:28,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:06:28,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:06:28,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 166 transitions. [2025-02-08 01:06:28,947 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.51875 [2025-02-08 01:06:28,947 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 198 flow. Second operand 8 states and 166 transitions. [2025-02-08 01:06:28,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 136 transitions, 874 flow [2025-02-08 01:06:28,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 136 transitions, 664 flow, removed 38 selfloop flow, removed 10 redundant places. [2025-02-08 01:06:28,967 INFO L231 Difference]: Finished difference. Result has 58 places, 45 transitions, 163 flow [2025-02-08 01:06:28,967 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=163, PETRI_PLACES=58, PETRI_TRANSITIONS=45} [2025-02-08 01:06:28,967 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 14 predicate places. [2025-02-08 01:06:28,967 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 45 transitions, 163 flow [2025-02-08 01:06:28,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 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) [2025-02-08 01:06:28,968 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:06:28,968 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:06:28,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 01:06:28,968 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:06:28,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:06:28,968 INFO L85 PathProgramCache]: Analyzing trace with hash -945958686, now seen corresponding path program 2 times [2025-02-08 01:06:28,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:06:28,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469153771] [2025-02-08 01:06:28,968 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:06:28,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:06:28,975 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 1 equivalence classes. [2025-02-08 01:06:28,979 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-08 01:06:28,980 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 01:06:28,980 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:06:29,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:06:29,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:06:29,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469153771] [2025-02-08 01:06:29,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469153771] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:06:29,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:06:29,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 01:06:29,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253159839] [2025-02-08 01:06:29,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:06:29,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 01:06:29,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:06:29,111 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 01:06:29,111 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 01:06:29,113 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2025-02-08 01:06:29,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 45 transitions, 163 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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) [2025-02-08 01:06:29,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:06:29,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2025-02-08 01:06:29,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:06:29,417 INFO L124 PetriNetUnfolderBase]: 2439/3886 cut-off events. [2025-02-08 01:06:29,417 INFO L125 PetriNetUnfolderBase]: For 1272/1272 co-relation queries the response was YES. [2025-02-08 01:06:29,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9449 conditions, 3886 events. 2439/3886 cut-off events. For 1272/1272 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 20321 event pairs, 592 based on Foata normal form. 8/3882 useless extension candidates. Maximal degree in co-relation 9441. Up to 1825 conditions per place. [2025-02-08 01:06:29,428 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 0 selfloop transitions, 0 changer transitions 87/87 dead transitions. [2025-02-08 01:06:29,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 87 transitions, 465 flow [2025-02-08 01:06:29,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 01:06:29,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 01:06:29,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2025-02-08 01:06:29,429 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2025-02-08 01:06:29,429 INFO L175 Difference]: Start difference. First operand has 58 places, 45 transitions, 163 flow. Second operand 6 states and 106 transitions. [2025-02-08 01:06:29,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 87 transitions, 465 flow [2025-02-08 01:06:29,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 87 transitions, 461 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-02-08 01:06:29,433 INFO L231 Difference]: Finished difference. Result has 56 places, 0 transitions, 0 flow [2025-02-08 01:06:29,433 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=56, PETRI_TRANSITIONS=0} [2025-02-08 01:06:29,434 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 12 predicate places. [2025-02-08 01:06:29,434 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 0 transitions, 0 flow [2025-02-08 01:06:29,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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) [2025-02-08 01:06:29,436 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2025-02-08 01:06:29,436 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2025-02-08 01:06:29,436 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2025-02-08 01:06:29,437 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2025-02-08 01:06:29,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 01:06:29,437 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2025-02-08 01:06:29,439 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-02-08 01:06:29,440 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-08 01:06:29,443 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.02 01:06:29 BasicIcfg [2025-02-08 01:06:29,443 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-08 01:06:29,444 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-08 01:06:29,444 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-08 01:06:29,444 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-08 01:06:29,445 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:06:24" (3/4) ... [2025-02-08 01:06:29,446 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-08 01:06:29,448 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P0 [2025-02-08 01:06:29,449 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P1 [2025-02-08 01:06:29,449 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P2 [2025-02-08 01:06:29,451 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2025-02-08 01:06:29,451 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2025-02-08 01:06:29,451 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2025-02-08 01:06:29,451 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-02-08 01:06:29,501 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-08 01:06:29,502 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-08 01:06:29,502 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-08 01:06:29,502 INFO L158 Benchmark]: Toolchain (without parser) took 5791.48ms. Allocated memory was 142.6MB in the beginning and 822.1MB in the end (delta: 679.5MB). Free memory was 111.0MB in the beginning and 593.2MB in the end (delta: -482.2MB). Peak memory consumption was 198.2MB. Max. memory is 16.1GB. [2025-02-08 01:06:29,503 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 201.3MB. Free memory is still 123.2MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 01:06:29,503 INFO L158 Benchmark]: CACSL2BoogieTranslator took 361.78ms. Allocated memory is still 142.6MB. Free memory was 111.0MB in the beginning and 91.1MB in the end (delta: 19.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 01:06:29,503 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.78ms. Allocated memory is still 142.6MB. Free memory was 91.1MB in the beginning and 89.3MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 01:06:29,503 INFO L158 Benchmark]: Boogie Preprocessor took 30.92ms. Allocated memory is still 142.6MB. Free memory was 89.3MB in the beginning and 87.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 01:06:29,503 INFO L158 Benchmark]: IcfgBuilder took 389.43ms. Allocated memory is still 142.6MB. Free memory was 87.5MB in the beginning and 67.6MB in the end (delta: 19.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-08 01:06:29,503 INFO L158 Benchmark]: TraceAbstraction took 4911.81ms. Allocated memory was 142.6MB in the beginning and 822.1MB in the end (delta: 679.5MB). Free memory was 67.2MB in the beginning and 597.5MB in the end (delta: -530.3MB). Peak memory consumption was 156.3MB. Max. memory is 16.1GB. [2025-02-08 01:06:29,503 INFO L158 Benchmark]: Witness Printer took 57.89ms. Allocated memory is still 822.1MB. Free memory was 597.5MB in the beginning and 593.2MB in the end (delta: 4.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 01:06:29,504 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 201.3MB. Free memory is still 123.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 361.78ms. Allocated memory is still 142.6MB. Free memory was 111.0MB in the beginning and 91.1MB in the end (delta: 19.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.78ms. Allocated memory is still 142.6MB. Free memory was 91.1MB in the beginning and 89.3MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.92ms. Allocated memory is still 142.6MB. Free memory was 89.3MB in the beginning and 87.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 389.43ms. Allocated memory is still 142.6MB. Free memory was 87.5MB in the beginning and 67.6MB in the end (delta: 19.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 4911.81ms. Allocated memory was 142.6MB in the beginning and 822.1MB in the end (delta: 679.5MB). Free memory was 67.2MB in the beginning and 597.5MB in the end (delta: -530.3MB). Peak memory consumption was 156.3MB. Max. memory is 16.1GB. * Witness Printer took 57.89ms. Allocated memory is still 822.1MB. Free memory was 597.5MB in the beginning and 593.2MB in the end (delta: 4.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 66 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.8s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 434 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 431 mSDsluCounter, 21 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1094 IncrementalHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 4 mSDtfsCounter, 1094 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=198occurred in iteration=4, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 137 NumberOfCodeBlocks, 137 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 131 ConstructedInterpolants, 0 QuantifiedInterpolants, 551 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-02-08 01:06:29,516 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/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