./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.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 dcc3fad0768415d67ba0b5226238487b935d262c55e83ab1790d239680fbb73d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 19:12:42,630 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 19:12:42,673 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 19:12:42,676 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 19:12:42,678 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 19:12:42,705 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 19:12:42,705 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 19:12:42,706 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 19:12:42,706 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 19:12:42,706 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 19:12:42,707 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 19:12:42,707 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 19:12:42,708 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 19:12:42,708 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 19:12:42,708 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 19:12:42,708 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 19:12:42,709 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 19:12:42,709 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 19:12:42,709 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 19:12:42,709 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 19:12:42,710 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 19:12:42,710 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 19:12:42,710 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 19:12:42,711 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 19:12:42,711 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 19:12:42,711 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 19:12:42,711 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 19:12:42,712 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 19:12:42,712 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 19:12:42,712 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 19:12:42,712 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 19:12:42,713 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 19:12:42,713 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:12:42,713 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 19:12:42,715 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 19:12:42,715 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 19:12:42,715 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 19:12:42,716 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 19:12:42,716 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 19:12:42,716 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 19:12:42,716 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 19:12:42,717 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 19:12:42,717 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dcc3fad0768415d67ba0b5226238487b935d262c55e83ab1790d239680fbb73d [2024-11-16 19:12:42,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 19:12:42,940 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 19:12:42,942 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 19:12:42,944 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 19:12:42,944 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 19:12:42,945 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.i [2024-11-16 19:12:44,236 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 19:12:44,423 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 19:12:44,424 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.i [2024-11-16 19:12:44,441 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ded562ae0/225bcfa9c11447ff9b9d1c753312cba4/FLAG565a8c93a [2024-11-16 19:12:44,795 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ded562ae0/225bcfa9c11447ff9b9d1c753312cba4 [2024-11-16 19:12:44,797 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 19:12:44,798 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 19:12:44,799 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 19:12:44,799 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 19:12:44,803 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 19:12:44,804 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:12:44" (1/1) ... [2024-11-16 19:12:44,804 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@448f9286 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:12:44, skipping insertion in model container [2024-11-16 19:12:44,804 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:12:44" (1/1) ... [2024-11-16 19:12:44,846 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 19:12:45,005 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2024-11-16 19:12:45,207 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:12:45,218 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 19:12:45,258 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2024-11-16 19:12:45,317 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:12:45,347 INFO L204 MainTranslator]: Completed translation [2024-11-16 19:12:45,348 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:12:45 WrapperNode [2024-11-16 19:12:45,348 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 19:12:45,349 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 19:12:45,349 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 19:12:45,349 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 19:12:45,355 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:12:45" (1/1) ... [2024-11-16 19:12:45,373 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:12:45" (1/1) ... [2024-11-16 19:12:45,399 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 127 [2024-11-16 19:12:45,400 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 19:12:45,400 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 19:12:45,400 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 19:12:45,400 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 19:12:45,409 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:12:45" (1/1) ... [2024-11-16 19:12:45,409 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:12:45" (1/1) ... [2024-11-16 19:12:45,414 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:12:45" (1/1) ... [2024-11-16 19:12:45,431 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-16 19:12:45,432 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:12:45" (1/1) ... [2024-11-16 19:12:45,432 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:12:45" (1/1) ... [2024-11-16 19:12:45,439 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:12:45" (1/1) ... [2024-11-16 19:12:45,440 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:12:45" (1/1) ... [2024-11-16 19:12:45,441 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:12:45" (1/1) ... [2024-11-16 19:12:45,443 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:12:45" (1/1) ... [2024-11-16 19:12:45,448 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 19:12:45,453 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 19:12:45,453 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 19:12:45,453 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 19:12:45,454 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:12:45" (1/1) ... [2024-11-16 19:12:45,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:12:45,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:12:45,493 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 19:12:45,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 19:12:45,543 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-16 19:12:45,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 19:12:45,544 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-11-16 19:12:45,544 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-11-16 19:12:45,544 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-11-16 19:12:45,544 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-11-16 19:12:45,544 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-11-16 19:12:45,544 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-11-16 19:12:45,544 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-11-16 19:12:45,544 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-11-16 19:12:45,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 19:12:45,544 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-16 19:12:45,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 19:12:45,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 19:12:45,547 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-16 19:12:45,670 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 19:12:45,671 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 19:12:45,989 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-16 19:12:45,989 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 19:12:46,188 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 19:12:46,189 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 19:12:46,190 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:12:46 BoogieIcfgContainer [2024-11-16 19:12:46,190 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 19:12:46,192 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 19:12:46,193 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 19:12:46,196 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 19:12:46,196 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:12:44" (1/3) ... [2024-11-16 19:12:46,197 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a18ef79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:12:46, skipping insertion in model container [2024-11-16 19:12:46,198 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:12:45" (2/3) ... [2024-11-16 19:12:46,198 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a18ef79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:12:46, skipping insertion in model container [2024-11-16 19:12:46,198 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:12:46" (3/3) ... [2024-11-16 19:12:46,201 INFO L112 eAbstractionObserver]: Analyzing ICFG mix047_power.oepc_pso.oepc_rmo.oepc.i [2024-11-16 19:12:46,216 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 19:12:46,217 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-16 19:12:46,217 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-16 19:12:46,269 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-16 19:12:46,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 50 transitions, 116 flow [2024-11-16 19:12:46,334 INFO L124 PetriNetUnfolderBase]: 1/46 cut-off events. [2024-11-16 19:12:46,334 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 19:12:46,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 1/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 97 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2024-11-16 19:12:46,339 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 50 transitions, 116 flow [2024-11-16 19:12:46,342 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 46 transitions, 104 flow [2024-11-16 19:12:46,358 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 19:12:46,368 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;@6c416f2c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 19:12:46,369 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-16 19:12:46,372 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 19:12:46,372 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-11-16 19:12:46,373 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 19:12:46,373 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:12:46,374 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-16 19:12:46,374 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:12:46,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:12:46,379 INFO L85 PathProgramCache]: Analyzing trace with hash 13243176, now seen corresponding path program 1 times [2024-11-16 19:12:46,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:12:46,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139235610] [2024-11-16 19:12:46,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:12:46,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:12:46,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:12:46,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:12:46,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:12:46,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139235610] [2024-11-16 19:12:46,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139235610] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:12:46,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:12:46,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-16 19:12:46,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381816224] [2024-11-16 19:12:46,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:12:46,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:12:46,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:12:46,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:12:46,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:12:46,870 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-11-16 19:12:46,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:12:46,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:12:46,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-11-16 19:12:46,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:12:51,962 INFO L124 PetriNetUnfolderBase]: 51971/68520 cut-off events. [2024-11-16 19:12:51,962 INFO L125 PetriNetUnfolderBase]: For 249/249 co-relation queries the response was YES. [2024-11-16 19:12:52,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137084 conditions, 68520 events. 51971/68520 cut-off events. For 249/249 co-relation queries the response was YES. Maximal size of possible extension queue 1950. Compared 416508 event pairs, 6431 based on Foata normal form. 1728/70205 useless extension candidates. Maximal degree in co-relation 137072. Up to 58931 conditions per place. [2024-11-16 19:12:52,590 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 65 selfloop transitions, 2 changer transitions 2/75 dead transitions. [2024-11-16 19:12:52,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 75 transitions, 309 flow [2024-11-16 19:12:52,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:12:52,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:12:52,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-11-16 19:12:52,606 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.68 [2024-11-16 19:12:52,608 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 104 flow. Second operand 3 states and 102 transitions. [2024-11-16 19:12:52,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 75 transitions, 309 flow [2024-11-16 19:12:52,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 75 transitions, 302 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-16 19:12:52,618 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 98 flow [2024-11-16 19:12:52,622 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2024-11-16 19:12:52,627 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, -3 predicate places. [2024-11-16 19:12:52,627 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 98 flow [2024-11-16 19:12:52,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:12:52,628 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:12:52,628 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:12:52,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 19:12:52,629 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:12:52,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:12:52,630 INFO L85 PathProgramCache]: Analyzing trace with hash -55431721, now seen corresponding path program 1 times [2024-11-16 19:12:52,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:12:52,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023483118] [2024-11-16 19:12:52,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:12:52,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:12:52,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:12:52,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:12:52,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:12:52,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023483118] [2024-11-16 19:12:52,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023483118] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:12:52,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:12:52,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:12:52,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468767547] [2024-11-16 19:12:52,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:12:52,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:12:52,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:12:52,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:12:52,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:12:52,955 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2024-11-16 19:12:52,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:12:52,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:12:52,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2024-11-16 19:12:52,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:13:04,317 INFO L124 PetriNetUnfolderBase]: 125873/167079 cut-off events. [2024-11-16 19:13:04,317 INFO L125 PetriNetUnfolderBase]: For 6338/6338 co-relation queries the response was YES. [2024-11-16 19:13:04,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339489 conditions, 167079 events. 125873/167079 cut-off events. For 6338/6338 co-relation queries the response was YES. Maximal size of possible extension queue 4498. Compared 1073200 event pairs, 32244 based on Foata normal form. 0/163819 useless extension candidates. Maximal degree in co-relation 339479. Up to 56437 conditions per place. [2024-11-16 19:13:05,071 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 60 selfloop transitions, 9 changer transitions 139/213 dead transitions. [2024-11-16 19:13:05,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 213 transitions, 872 flow [2024-11-16 19:13:05,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 19:13:05,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-16 19:13:05,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 291 transitions. [2024-11-16 19:13:05,076 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6466666666666666 [2024-11-16 19:13:05,077 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 98 flow. Second operand 9 states and 291 transitions. [2024-11-16 19:13:05,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 213 transitions, 872 flow [2024-11-16 19:13:05,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 213 transitions, 854 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-16 19:13:05,083 INFO L231 Difference]: Finished difference. Result has 68 places, 50 transitions, 218 flow [2024-11-16 19:13:05,084 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=218, PETRI_PLACES=68, PETRI_TRANSITIONS=50} [2024-11-16 19:13:05,084 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 10 predicate places. [2024-11-16 19:13:05,085 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 50 transitions, 218 flow [2024-11-16 19:13:05,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:13:05,085 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:13:05,085 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:13:05,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 19:13:05,085 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:13:05,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:13:05,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1462010216, now seen corresponding path program 1 times [2024-11-16 19:13:05,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:13:05,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718444909] [2024-11-16 19:13:05,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:13:05,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:13:05,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:13:05,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:13:05,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:13:05,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718444909] [2024-11-16 19:13:05,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718444909] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:13:05,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:13:05,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:13:05,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332652763] [2024-11-16 19:13:05,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:13:05,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 19:13:05,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:13:05,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 19:13:05,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 19:13:05,257 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2024-11-16 19:13:05,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 50 transitions, 218 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:13:05,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:13:05,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2024-11-16 19:13:05,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:13:14,884 INFO L124 PetriNetUnfolderBase]: 91760/122612 cut-off events. [2024-11-16 19:13:14,885 INFO L125 PetriNetUnfolderBase]: For 179224/179290 co-relation queries the response was YES. [2024-11-16 19:13:15,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 359531 conditions, 122612 events. 91760/122612 cut-off events. For 179224/179290 co-relation queries the response was YES. Maximal size of possible extension queue 3250. Compared 766813 event pairs, 17862 based on Foata normal form. 3238/125827 useless extension candidates. Maximal degree in co-relation 359513. Up to 38097 conditions per place. [2024-11-16 19:13:15,748 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 79 selfloop transitions, 9 changer transitions 130/223 dead transitions. [2024-11-16 19:13:15,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 223 transitions, 1394 flow [2024-11-16 19:13:15,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 19:13:15,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-16 19:13:15,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 290 transitions. [2024-11-16 19:13:15,752 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.58 [2024-11-16 19:13:15,752 INFO L175 Difference]: Start difference. First operand has 68 places, 50 transitions, 218 flow. Second operand 10 states and 290 transitions. [2024-11-16 19:13:15,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 223 transitions, 1394 flow [2024-11-16 19:13:16,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 223 transitions, 1236 flow, removed 39 selfloop flow, removed 4 redundant places. [2024-11-16 19:13:16,741 INFO L231 Difference]: Finished difference. Result has 75 places, 55 transitions, 284 flow [2024-11-16 19:13:16,741 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=57, 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=10, PETRI_FLOW=284, PETRI_PLACES=75, PETRI_TRANSITIONS=55} [2024-11-16 19:13:16,742 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 17 predicate places. [2024-11-16 19:13:16,742 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 55 transitions, 284 flow [2024-11-16 19:13:16,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:13:16,743 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:13:16,743 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:13:16,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 19:13:16,743 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:13:16,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:13:16,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1571549555, now seen corresponding path program 1 times [2024-11-16 19:13:16,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:13:16,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846838190] [2024-11-16 19:13:16,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:13:16,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:13:16,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:13:16,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:13:16,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:13:16,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846838190] [2024-11-16 19:13:16,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846838190] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:13:16,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:13:16,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:13:16,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917753720] [2024-11-16 19:13:16,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:13:16,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 19:13:16,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:13:16,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 19:13:16,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 19:13:16,926 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2024-11-16 19:13:16,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 55 transitions, 284 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:13:16,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:13:16,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2024-11-16 19:13:16,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand