./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe016_power.opt.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/safe016_power.opt.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 6b69d29db6700923687b32c5d8fab6e8f05fe2198d87348098263d957793e472 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 01:04:43,453 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 01:04:43,531 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-08 01:04:43,536 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 01:04:43,536 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 01:04:43,552 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 01:04:43,553 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 01:04:43,553 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 01:04:43,553 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 01:04:43,553 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 01:04:43,553 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 01:04:43,553 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 01:04:43,554 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 01:04:43,554 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 01:04:43,554 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 01:04:43,554 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 01:04:43,554 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 01:04:43,554 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 01:04:43,554 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 01:04:43,554 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 01:04:43,554 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 01:04:43,554 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 01:04:43,555 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 01:04:43,555 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 01:04:43,555 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 01:04:43,555 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 01:04:43,555 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 01:04:43,556 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 01:04:43,556 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 01:04:43,556 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 01:04:43,556 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 01:04:43,556 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 01:04:43,556 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:04:43,556 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 01:04:43,557 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 01:04:43,557 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 01:04:43,557 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 01:04:43,557 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 01:04:43,557 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 01:04:43,557 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 01:04:43,557 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 01:04:43,557 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 01:04:43,558 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 01:04:43,558 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 -> 6b69d29db6700923687b32c5d8fab6e8f05fe2198d87348098263d957793e472 [2025-02-08 01:04:43,909 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 01:04:43,917 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 01:04:43,921 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 01:04:43,923 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 01:04:43,923 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 01:04:43,925 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe016_power.opt.i [2025-02-08 01:04:45,335 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/57aa3e158/8397aa9783ba4c9db29df7dbdbab18a7/FLAG5839f8b38 [2025-02-08 01:04:45,730 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 01:04:45,732 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe016_power.opt.i [2025-02-08 01:04:45,754 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/57aa3e158/8397aa9783ba4c9db29df7dbdbab18a7/FLAG5839f8b38 [2025-02-08 01:04:45,774 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/57aa3e158/8397aa9783ba4c9db29df7dbdbab18a7 [2025-02-08 01:04:45,777 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 01:04:45,778 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 01:04:45,781 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 01:04:45,781 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 01:04:45,786 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 01:04:45,787 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:04:45" (1/1) ... [2025-02-08 01:04:45,790 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cf32be2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:04:45, skipping insertion in model container [2025-02-08 01:04:45,790 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:04:45" (1/1) ... [2025-02-08 01:04:45,828 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 01:04:45,996 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/safe016_power.opt.i[951,964] [2025-02-08 01:04:46,197 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:04:46,207 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 01:04:46,215 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/safe016_power.opt.i[951,964] [2025-02-08 01:04:46,270 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:04:46,307 INFO L204 MainTranslator]: Completed translation [2025-02-08 01:04:46,308 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:04:46 WrapperNode [2025-02-08 01:04:46,308 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 01:04:46,309 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 01:04:46,309 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 01:04:46,309 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 01:04:46,314 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:04:46" (1/1) ... [2025-02-08 01:04:46,330 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:04:46" (1/1) ... [2025-02-08 01:04:46,352 INFO L138 Inliner]: procedures = 176, calls = 75, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 170 [2025-02-08 01:04:46,352 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 01:04:46,353 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 01:04:46,353 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 01:04:46,353 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 01:04:46,361 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:04:46" (1/1) ... [2025-02-08 01:04:46,362 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:04:46" (1/1) ... [2025-02-08 01:04:46,366 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:04:46" (1/1) ... [2025-02-08 01:04:46,383 INFO L175 MemorySlicer]: Split 30 memory accesses to 2 slices as follows [28, 2]. 93 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [1, 2]. The 11 writes are split as follows [11, 0]. [2025-02-08 01:04:46,383 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:04:46" (1/1) ... [2025-02-08 01:04:46,384 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:04:46" (1/1) ... [2025-02-08 01:04:46,398 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:04:46" (1/1) ... [2025-02-08 01:04:46,400 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:04:46" (1/1) ... [2025-02-08 01:04:46,402 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:04:46" (1/1) ... [2025-02-08 01:04:46,404 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:04:46" (1/1) ... [2025-02-08 01:04:46,407 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 01:04:46,408 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 01:04:46,408 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 01:04:46,408 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 01:04:46,409 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:04:46" (1/1) ... [2025-02-08 01:04:46,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:04:46,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:04:46,450 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 01:04:46,455 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 01:04:46,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 01:04:46,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 01:04:46,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 01:04:46,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 01:04:46,481 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 01:04:46,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 01:04:46,481 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-02-08 01:04:46,481 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-02-08 01:04:46,481 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-02-08 01:04:46,482 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-02-08 01:04:46,482 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-02-08 01:04:46,482 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-02-08 01:04:46,482 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2025-02-08 01:04:46,482 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2025-02-08 01:04:46,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 01:04:46,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 01:04:46,482 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 01:04:46,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 01:04:46,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 01:04:46,484 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 01:04:46,640 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 01:04:46,642 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 01:04:47,244 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 01:04:47,245 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 01:04:47,720 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 01:04:47,720 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 01:04:47,721 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:04:47 BoogieIcfgContainer [2025-02-08 01:04:47,721 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 01:04:47,724 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 01:04:47,724 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 01:04:47,729 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 01:04:47,730 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 01:04:45" (1/3) ... [2025-02-08 01:04:47,731 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57e9a5db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:04:47, skipping insertion in model container [2025-02-08 01:04:47,731 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:04:46" (2/3) ... [2025-02-08 01:04:47,731 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57e9a5db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:04:47, skipping insertion in model container [2025-02-08 01:04:47,731 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:04:47" (3/3) ... [2025-02-08 01:04:47,732 INFO L128 eAbstractionObserver]: Analyzing ICFG safe016_power.opt.i [2025-02-08 01:04:47,751 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 01:04:47,754 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG safe016_power.opt.i that has 5 procedures, 45 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-02-08 01:04:47,754 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 01:04:47,843 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-08 01:04:47,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 45 transitions, 106 flow [2025-02-08 01:04:47,928 INFO L124 PetriNetUnfolderBase]: 1/41 cut-off events. [2025-02-08 01:04:47,930 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 01:04:47,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 41 events. 1/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 73 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2025-02-08 01:04:47,937 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 45 transitions, 106 flow [2025-02-08 01:04:47,940 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 38 transitions, 88 flow [2025-02-08 01:04:47,957 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 01:04:47,971 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;@20c30306, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 01:04:47,975 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-02-08 01:04:47,999 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 01:04:47,999 INFO L124 PetriNetUnfolderBase]: 0/37 cut-off events. [2025-02-08 01:04:47,999 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 01:04:47,999 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:04:48,000 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:04:48,001 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 2 more)] === [2025-02-08 01:04:48,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:04:48,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1360086335, now seen corresponding path program 1 times [2025-02-08 01:04:48,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:04:48,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66150383] [2025-02-08 01:04:48,015 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:04:48,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:04:48,107 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 01:04:48,210 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 01:04:48,210 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:04:48,210 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:04:48,925 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 01:04:48,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:04:48,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66150383] [2025-02-08 01:04:48,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66150383] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:04:48,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:04:48,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 01:04:48,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335980811] [2025-02-08 01:04:48,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:04:48,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:04:48,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:04:48,965 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:04:48,965 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:04:48,977 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2025-02-08 01:04:48,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 38 transitions, 88 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) [2025-02-08 01:04:48,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:04:48,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2025-02-08 01:04:48,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:04:54,688 INFO L124 PetriNetUnfolderBase]: 27202/36945 cut-off events. [2025-02-08 01:04:54,688 INFO L125 PetriNetUnfolderBase]: For 209/209 co-relation queries the response was YES. [2025-02-08 01:04:54,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73570 conditions, 36945 events. 27202/36945 cut-off events. For 209/209 co-relation queries the response was YES. Maximal size of possible extension queue 1213. Compared 222614 event pairs, 3582 based on Foata normal form. 900/37834 useless extension candidates. Maximal degree in co-relation 73558. Up to 26651 conditions per place. [2025-02-08 01:04:54,976 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 54 selfloop transitions, 2 changer transitions 65/126 dead transitions. [2025-02-08 01:04:54,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 126 transitions, 515 flow [2025-02-08 01:04:54,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 01:04:54,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 01:04:54,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2025-02-08 01:04:54,991 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5904761904761905 [2025-02-08 01:04:54,993 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 88 flow. Second operand 7 states and 186 transitions. [2025-02-08 01:04:54,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 126 transitions, 515 flow [2025-02-08 01:04:55,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 126 transitions, 508 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-08 01:04:55,011 INFO L231 Difference]: Finished difference. Result has 58 places, 38 transitions, 100 flow [2025-02-08 01:04:55,014 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=84, 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=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=100, PETRI_PLACES=58, PETRI_TRANSITIONS=38} [2025-02-08 01:04:55,020 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 7 predicate places. [2025-02-08 01:04:55,020 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 38 transitions, 100 flow [2025-02-08 01:04:55,021 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) [2025-02-08 01:04:55,021 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:04:55,021 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:04:55,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 01:04:55,022 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 2 more)] === [2025-02-08 01:04:55,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:04:55,023 INFO L85 PathProgramCache]: Analyzing trace with hash 829427956, now seen corresponding path program 1 times [2025-02-08 01:04:55,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:04:55,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919113414] [2025-02-08 01:04:55,023 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:04:55,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:04:55,048 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-08 01:04:55,099 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 01:04:55,099 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:04:55,099 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:04:55,464 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 01:04:55,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:04:55,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919113414] [2025-02-08 01:04:55,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919113414] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:04:55,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:04:55,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:04:55,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65335456] [2025-02-08 01:04:55,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:04:55,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 01:04:55,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:04:55,467 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 01:04:55,468 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 01:04:55,472 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2025-02-08 01:04:55,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 38 transitions, 100 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) [2025-02-08 01:04:55,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:04:55,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2025-02-08 01:04:55,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:05:01,099 INFO L124 PetriNetUnfolderBase]: 37377/50357 cut-off events. [2025-02-08 01:05:01,100 INFO L125 PetriNetUnfolderBase]: For 4982/4982 co-relation queries the response was YES. [2025-02-08 01:05:01,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108004 conditions, 50357 events. 37377/50357 cut-off events. For 4982/4982 co-relation queries the response was YES. Maximal size of possible extension queue 1640. Compared 295503 event pairs, 4425 based on Foata normal form. 750/51046 useless extension candidates. Maximal degree in co-relation 107989. Up to 24271 conditions per place. [2025-02-08 01:05:01,386 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 61 selfloop transitions, 4 changer transitions 69/139 dead transitions. [2025-02-08 01:05:01,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 139 transitions, 589 flow [2025-02-08 01:05:01,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:05:01,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:05:01,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2025-02-08 01:05:01,389 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5777777777777777 [2025-02-08 01:05:01,389 INFO L175 Difference]: Start difference. First operand has 58 places, 38 transitions, 100 flow. Second operand 8 states and 208 transitions. [2025-02-08 01:05:01,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 139 transitions, 589 flow [2025-02-08 01:05:02,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 139 transitions, 567 flow, removed 8 selfloop flow, removed 6 redundant places. [2025-02-08 01:05:02,192 INFO L231 Difference]: Finished difference. Result has 61 places, 40 transitions, 130 flow [2025-02-08 01:05:02,192 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=130, PETRI_PLACES=61, PETRI_TRANSITIONS=40} [2025-02-08 01:05:02,193 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 10 predicate places. [2025-02-08 01:05:02,193 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 40 transitions, 130 flow [2025-02-08 01:05:02,193 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) [2025-02-08 01:05:02,193 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:05:02,193 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 01:05:02,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 01:05:02,194 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 2 more)] === [2025-02-08 01:05:02,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:05:02,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1155388067, now seen corresponding path program 1 times [2025-02-08 01:05:02,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:05:02,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401654825] [2025-02-08 01:05:02,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:05:02,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:05:02,211 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 01:05:02,228 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:05:02,229 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:05:02,229 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:05:02,608 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 01:05:02,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:05:02,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401654825] [2025-02-08 01:05:02,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401654825] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:05:02,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:05:02,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 01:05:02,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518712796] [2025-02-08 01:05:02,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:05:02,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:05:02,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:05:02,611 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:05:02,611 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:05:02,615 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2025-02-08 01:05:02,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 40 transitions, 130 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 01:05:02,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:05:02,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2025-02-08 01:05:02,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:05:06,055 INFO L124 PetriNetUnfolderBase]: 22567/30697 cut-off events. [2025-02-08 01:05:06,055 INFO L125 PetriNetUnfolderBase]: For 17267/17267 co-relation queries the response was YES. [2025-02-08 01:05:06,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75162 conditions, 30697 events. 22567/30697 cut-off events. For 17267/17267 co-relation queries the response was YES. Maximal size of possible extension queue 942. Compared 171538 event pairs, 9457 based on Foata normal form. 600/31290 useless extension candidates. Maximal degree in co-relation 75145. Up to 23556 conditions per place. [2025-02-08 01:05:06,298 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 52 selfloop transitions, 2 changer transitions 57/116 dead transitions. [2025-02-08 01:05:06,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 116 transitions, 540 flow [2025-02-08 01:05:06,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 01:05:06,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 01:05:06,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2025-02-08 01:05:06,300 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5523809523809524 [2025-02-08 01:05:06,300 INFO L175 Difference]: Start difference. First operand has 61 places, 40 transitions, 130 flow. Second operand 7 states and 174 transitions. [2025-02-08 01:05:06,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 116 transitions, 540 flow [2025-02-08 01:05:06,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 116 transitions, 520 flow, removed 6 selfloop flow, removed 4 redundant places. [2025-02-08 01:05:06,581 INFO L231 Difference]: Finished difference. Result has 64 places, 40 transitions, 135 flow [2025-02-08 01:05:06,582 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=135, PETRI_PLACES=64, PETRI_TRANSITIONS=40} [2025-02-08 01:05:06,582 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 13 predicate places. [2025-02-08 01:05:06,583 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 40 transitions, 135 flow [2025-02-08 01:05:06,583 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 01:05:06,583 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:05:06,583 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] [2025-02-08 01:05:06,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 01:05:06,583 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 2 more)] === [2025-02-08 01:05:06,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:05:06,584 INFO L85 PathProgramCache]: Analyzing trace with hash 947274978, now seen corresponding path program 1 times [2025-02-08 01:05:06,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:05:06,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924986374] [2025-02-08 01:05:06,584 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:05:06,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:05:06,601 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-08 01:05:06,620 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-08 01:05:06,620 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:05:06,620 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:05:06,970 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 01:05:06,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:05:06,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924986374] [2025-02-08 01:05:06,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924986374] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:05:06,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:05:06,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 01:05:06,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411582894] [2025-02-08 01:05:06,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:05:06,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 01:05:06,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:05:06,972 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 01:05:06,973 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 01:05:06,980 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2025-02-08 01:05:06,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 40 transitions, 135 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) [2025-02-08 01:05:06,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:05:06,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2025-02-08 01:05:06,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:05:13,345 INFO L124 PetriNetUnfolderBase]: 48312/65045 cut-off events. [2025-02-08 01:05:13,345 INFO L125 PetriNetUnfolderBase]: For 35183/35183 co-relation queries the response was YES. [2025-02-08 01:05:13,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152248 conditions, 65045 events. 48312/65045 cut-off events. For 35183/35183 co-relation queries the response was YES. Maximal size of possible extension queue 2065. Compared 394260 event pairs, 12225 based on Foata normal form. 1300/66334 useless extension candidates. Maximal degree in co-relation 152228. Up to 20109 conditions per place. [2025-02-08 01:05:13,809 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 54 selfloop transitions, 3 changer transitions 132/194 dead transitions. [2025-02-08 01:05:13,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 194 transitions, 893 flow [2025-02-08 01:05:13,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-08 01:05:13,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-08 01:05:13,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 290 transitions. [2025-02-08 01:05:13,811 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5858585858585859 [2025-02-08 01:05:13,811 INFO L175 Difference]: Start difference. First operand has 64 places, 40 transitions, 135 flow. Second operand 11 states and 290 transitions. [2025-02-08 01:05:13,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 194 transitions, 893 flow [2025-02-08 01:05:15,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 194 transitions, 853 flow, removed 18 selfloop flow, removed 6 redundant places. [2025-02-08 01:05:15,685 INFO L231 Difference]: Finished difference. Result has 73 places, 40 transitions, 150 flow [2025-02-08 01:05:15,686 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=150, PETRI_PLACES=73, PETRI_TRANSITIONS=40} [2025-02-08 01:05:15,686 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 22 predicate places. [2025-02-08 01:05:15,687 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 40 transitions, 150 flow [2025-02-08 01:05:15,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:05:15,687 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:05:15,687 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] [2025-02-08 01:05:15,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 01:05:15,687 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 2 more)] === [2025-02-08 01:05:15,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:05:15,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1992732626, now seen corresponding path program 1 times [2025-02-08 01:05:15,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:05:15,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861543939] [2025-02-08 01:05:15,688 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:05:15,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:05:15,708 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-08 01:05:15,736 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-08 01:05:15,736 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:05:15,736 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:05:17,059 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 01:05:17,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:05:17,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861543939] [2025-02-08 01:05:17,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861543939] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:05:17,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:05:17,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 01:05:17,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772638905] [2025-02-08 01:05:17,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:05:17,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 01:05:17,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:05:17,062 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 01:05:17,062 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-02-08 01:05:17,066 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2025-02-08 01:05:17,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 40 transitions, 150 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 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 01:05:17,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:05:17,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2025-02-08 01:05:17,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand