./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.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-deagle/arithmetic_prog_ok.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 29016034e4102bf62d4fcba069301a54da1d77dfd5739e4cf52e395ddaa22e38 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 01:22:11,212 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 01:22:11,265 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-08 01:22:11,272 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 01:22:11,275 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 01:22:11,297 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 01:22:11,299 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 01:22:11,299 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 01:22:11,299 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 01:22:11,299 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 01:22:11,300 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 01:22:11,300 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 01:22:11,300 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 01:22:11,300 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 01:22:11,300 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 01:22:11,301 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 01:22:11,301 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 01:22:11,301 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 01:22:11,301 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 01:22:11,302 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 01:22:11,302 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 01:22:11,302 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 01:22:11,302 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 01:22:11,302 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 01:22:11,302 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 01:22:11,302 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 01:22:11,302 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 01:22:11,302 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 01:22:11,302 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 01:22:11,302 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 01:22:11,302 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 01:22:11,302 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 01:22:11,303 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:22:11,303 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 01:22:11,303 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 01:22:11,303 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 01:22:11,303 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 01:22:11,303 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 01:22:11,303 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 01:22:11,303 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 01:22:11,304 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 01:22:11,304 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 01:22:11,304 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 01:22:11,304 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 -> 29016034e4102bf62d4fcba069301a54da1d77dfd5739e4cf52e395ddaa22e38 [2025-02-08 01:22:11,514 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 01:22:11,519 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 01:22:11,520 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 01:22:11,521 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 01:22:11,521 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 01:22:11,522 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i [2025-02-08 01:22:12,682 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/fbc7498c3/78a68506d3254623a40a14006195af46/FLAGe90025a5c [2025-02-08 01:22:13,026 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 01:22:13,028 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i [2025-02-08 01:22:13,043 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/fbc7498c3/78a68506d3254623a40a14006195af46/FLAGe90025a5c [2025-02-08 01:22:13,274 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/fbc7498c3/78a68506d3254623a40a14006195af46 [2025-02-08 01:22:13,276 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 01:22:13,277 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 01:22:13,278 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 01:22:13,278 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 01:22:13,280 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 01:22:13,281 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:22:13" (1/1) ... [2025-02-08 01:22:13,281 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@718da415 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:22:13, skipping insertion in model container [2025-02-08 01:22:13,282 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:22:13" (1/1) ... [2025-02-08 01:22:13,299 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 01:22:13,532 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-deagle/arithmetic_prog_ok.i[39757,39770] [2025-02-08 01:22:13,534 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:22:13,562 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 01:22:13,602 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-deagle/arithmetic_prog_ok.i[39757,39770] [2025-02-08 01:22:13,604 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:22:13,649 INFO L204 MainTranslator]: Completed translation [2025-02-08 01:22:13,650 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:22:13 WrapperNode [2025-02-08 01:22:13,650 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 01:22:13,651 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 01:22:13,651 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 01:22:13,652 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 01:22:13,656 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:22:13" (1/1) ... [2025-02-08 01:22:13,667 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:22:13" (1/1) ... [2025-02-08 01:22:13,702 INFO L138 Inliner]: procedures = 243, calls = 26, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 260 [2025-02-08 01:22:13,703 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 01:22:13,705 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 01:22:13,705 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 01:22:13,705 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 01:22:13,714 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:22:13" (1/1) ... [2025-02-08 01:22:13,714 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:22:13" (1/1) ... [2025-02-08 01:22:13,718 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:22:13" (1/1) ... [2025-02-08 01:22:13,747 INFO L175 MemorySlicer]: Split 11 memory accesses to 3 slices as follows [2, 1, 8]. 73 percent of accesses are in the largest equivalence class. The 11 initializations are split as follows [2, 1, 8]. The 0 writes are split as follows [0, 0, 0]. [2025-02-08 01:22:13,747 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:22:13" (1/1) ... [2025-02-08 01:22:13,748 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:22:13" (1/1) ... [2025-02-08 01:22:13,759 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:22:13" (1/1) ... [2025-02-08 01:22:13,765 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:22:13" (1/1) ... [2025-02-08 01:22:13,769 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:22:13" (1/1) ... [2025-02-08 01:22:13,770 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:22:13" (1/1) ... [2025-02-08 01:22:13,772 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 01:22:13,773 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 01:22:13,773 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 01:22:13,773 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 01:22:13,773 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:22:13" (1/1) ... [2025-02-08 01:22:13,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:22:13,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:22:13,800 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 01:22:13,805 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 01:22:13,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-02-08 01:22:13,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-02-08 01:22:13,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-02-08 01:22:13,823 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-02-08 01:22:13,823 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 01:22:13,824 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 01:22:13,824 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 01:22:13,824 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 01:22:13,824 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-02-08 01:22:13,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 01:22:13,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 01:22:13,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 01:22:13,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-08 01:22:13,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 01:22:13,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 01:22:13,826 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 01:22:13,972 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 01:22:13,973 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 01:22:14,299 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 01:22:14,299 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 01:22:14,850 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 01:22:14,851 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 01:22:14,851 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:22:14 BoogieIcfgContainer [2025-02-08 01:22:14,851 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 01:22:14,852 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 01:22:14,852 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 01:22:14,856 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 01:22:14,856 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 01:22:13" (1/3) ... [2025-02-08 01:22:14,856 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13a7f75c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:22:14, skipping insertion in model container [2025-02-08 01:22:14,857 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:22:13" (2/3) ... [2025-02-08 01:22:14,857 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13a7f75c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:22:14, skipping insertion in model container [2025-02-08 01:22:14,857 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:22:14" (3/3) ... [2025-02-08 01:22:14,858 INFO L128 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_ok.i [2025-02-08 01:22:14,868 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 01:22:14,869 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG arithmetic_prog_ok.i that has 3 procedures, 33 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2025-02-08 01:22:14,869 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 01:22:14,943 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-08 01:22:14,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 38 transitions, 90 flow [2025-02-08 01:22:15,003 INFO L124 PetriNetUnfolderBase]: 6/36 cut-off events. [2025-02-08 01:22:15,005 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-08 01:22:15,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 36 events. 6/36 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 60 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 27. Up to 3 conditions per place. [2025-02-08 01:22:15,011 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 38 transitions, 90 flow [2025-02-08 01:22:15,012 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 32 transitions, 76 flow [2025-02-08 01:22:15,022 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 01:22:15,031 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;@1851c7b2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 01:22:15,031 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-02-08 01:22:15,040 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 01:22:15,040 INFO L124 PetriNetUnfolderBase]: 4/31 cut-off events. [2025-02-08 01:22:15,040 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-08 01:22:15,041 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:22:15,041 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:22:15,041 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:22:15,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:22:15,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1767043101, now seen corresponding path program 1 times [2025-02-08 01:22:15,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:22:15,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605116398] [2025-02-08 01:22:15,050 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:22:15,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:22:15,499 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 01:22:15,554 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 01:22:15,559 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:22:15,559 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:22:15,735 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 01:22:15,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:22:15,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605116398] [2025-02-08 01:22:15,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605116398] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:22:15,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:22:15,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 01:22:15,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722640975] [2025-02-08 01:22:15,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:22:15,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 01:22:15,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:22:15,762 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 01:22:15,763 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 01:22:15,767 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2025-02-08 01:22:15,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 32 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:22:15,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:22:15,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2025-02-08 01:22:15,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:22:15,989 INFO L124 PetriNetUnfolderBase]: 428/757 cut-off events. [2025-02-08 01:22:15,992 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2025-02-08 01:22:15,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1453 conditions, 757 events. 428/757 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3371 event pairs, 168 based on Foata normal form. 17/746 useless extension candidates. Maximal degree in co-relation 1362. Up to 414 conditions per place. [2025-02-08 01:22:15,999 INFO L140 encePairwiseOnDemand]: 35/38 looper letters, 37 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2025-02-08 01:22:16,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 48 transitions, 189 flow [2025-02-08 01:22:16,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 01:22:16,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 01:22:16,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2025-02-08 01:22:16,011 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6929824561403509 [2025-02-08 01:22:16,013 INFO L175 Difference]: Start difference. First operand has 35 places, 32 transitions, 76 flow. Second operand 3 states and 79 transitions. [2025-02-08 01:22:16,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 48 transitions, 189 flow [2025-02-08 01:22:16,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 48 transitions, 179 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-08 01:22:16,021 INFO L231 Difference]: Finished difference. Result has 34 places, 33 transitions, 80 flow [2025-02-08 01:22:16,023 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=34, PETRI_TRANSITIONS=33} [2025-02-08 01:22:16,026 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2025-02-08 01:22:16,026 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 33 transitions, 80 flow [2025-02-08 01:22:16,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:22:16,027 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:22:16,028 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 01:22:16,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 01:22:16,028 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:22:16,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:22:16,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1045986949, now seen corresponding path program 1 times [2025-02-08 01:22:16,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:22:16,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107258963] [2025-02-08 01:22:16,030 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:22:16,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:22:16,294 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 01:22:16,316 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:22:16,317 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:22:16,317 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:22:16,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:22:16,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:22:16,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107258963] [2025-02-08 01:22:16,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107258963] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:22:16,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:22:16,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 01:22:16,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945974247] [2025-02-08 01:22:16,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:22:16,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 01:22:16,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:22:16,445 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 01:22:16,445 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 01:22:16,447 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2025-02-08 01:22:16,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 33 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 01:22:16,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:22:16,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2025-02-08 01:22:16,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:22:16,572 INFO L124 PetriNetUnfolderBase]: 744/1331 cut-off events. [2025-02-08 01:22:16,573 INFO L125 PetriNetUnfolderBase]: For 124/124 co-relation queries the response was YES. [2025-02-08 01:22:16,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2619 conditions, 1331 events. 744/1331 cut-off events. For 124/124 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 6850 event pairs, 298 based on Foata normal form. 30/1324 useless extension candidates. Maximal degree in co-relation 500. Up to 685 conditions per place. [2025-02-08 01:22:16,578 INFO L140 encePairwiseOnDemand]: 35/38 looper letters, 40 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2025-02-08 01:22:16,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 51 transitions, 211 flow [2025-02-08 01:22:16,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 01:22:16,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 01:22:16,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2025-02-08 01:22:16,579 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7017543859649122 [2025-02-08 01:22:16,579 INFO L175 Difference]: Start difference. First operand has 34 places, 33 transitions, 80 flow. Second operand 3 states and 80 transitions. [2025-02-08 01:22:16,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 51 transitions, 211 flow [2025-02-08 01:22:16,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 51 transitions, 207 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 01:22:16,581 INFO L231 Difference]: Finished difference. Result has 36 places, 34 transitions, 90 flow [2025-02-08 01:22:16,581 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=36, PETRI_TRANSITIONS=34} [2025-02-08 01:22:16,581 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 1 predicate places. [2025-02-08 01:22:16,581 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 34 transitions, 90 flow [2025-02-08 01:22:16,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 01:22:16,581 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:22:16,581 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:22:16,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 01:22:16,581 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:22:16,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:22:16,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1033727587, now seen corresponding path program 1 times [2025-02-08 01:22:16,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:22:16,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562701993] [2025-02-08 01:22:16,582 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:22:16,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:22:16,721 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-08 01:22:16,735 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-08 01:22:16,736 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:22:16,736 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:22:16,804 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:22:16,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:22:16,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562701993] [2025-02-08 01:22:16,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562701993] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:22:16,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609126664] [2025-02-08 01:22:16,805 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:22:16,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:22:16,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:22:16,807 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:22:16,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-08 01:22:17,068 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-08 01:22:17,106 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-08 01:22:17,106 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:22:17,106 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:22:17,109 INFO L256 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 01:22:17,112 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:22:17,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:22:17,144 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:22:17,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:22:17,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609126664] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:22:17,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:22:17,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-02-08 01:22:17,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886704644] [2025-02-08 01:22:17,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:22:17,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 01:22:17,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:22:17,171 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 01:22:17,171 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-08 01:22:17,175 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2025-02-08 01:22:17,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 34 transitions, 90 flow. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 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 01:22:17,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:22:17,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2025-02-08 01:22:17,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:22:17,416 INFO L124 PetriNetUnfolderBase]: 1535/2639 cut-off events. [2025-02-08 01:22:17,417 INFO L125 PetriNetUnfolderBase]: For 314/314 co-relation queries the response was YES. [2025-02-08 01:22:17,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5454 conditions, 2639 events. 1535/2639 cut-off events. For 314/314 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 13489 event pairs, 115 based on Foata normal form. 90/2712 useless extension candidates. Maximal degree in co-relation 2026. Up to 549 conditions per place. [2025-02-08 01:22:17,427 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 89 selfloop transitions, 6 changer transitions 0/103 dead transitions. [2025-02-08 01:22:17,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 103 transitions, 458 flow [2025-02-08 01:22:17,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 01:22:17,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 01:22:17,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 165 transitions. [2025-02-08 01:22:17,429 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7236842105263158 [2025-02-08 01:22:17,429 INFO L175 Difference]: Start difference. First operand has 36 places, 34 transitions, 90 flow. Second operand 6 states and 165 transitions. [2025-02-08 01:22:17,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 103 transitions, 458 flow [2025-02-08 01:22:17,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 103 transitions, 456 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 01:22:17,431 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 128 flow [2025-02-08 01:22:17,431 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=128, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2025-02-08 01:22:17,431 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 9 predicate places. [2025-02-08 01:22:17,431 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 128 flow [2025-02-08 01:22:17,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 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 01:22:17,432 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:22:17,432 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:22:17,439 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 01:22:17,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:22:17,633 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:22:17,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:22:17,634 INFO L85 PathProgramCache]: Analyzing trace with hash 2139323995, now seen corresponding path program 2 times [2025-02-08 01:22:17,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:22:17,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838405746] [2025-02-08 01:22:17,634 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:22:17,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:22:17,834 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 44 statements into 2 equivalence classes. [2025-02-08 01:22:17,844 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 20 of 44 statements. [2025-02-08 01:22:17,844 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 01:22:17,844 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:22:17,919 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-02-08 01:22:17,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:22:17,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838405746] [2025-02-08 01:22:17,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838405746] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:22:17,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:22:17,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 01:22:17,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606876291] [2025-02-08 01:22:17,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:22:17,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 01:22:17,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:22:17,922 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 01:22:17,922 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 01:22:17,924 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2025-02-08 01:22:17,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 128 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 01:22:17,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:22:17,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2025-02-08 01:22:17,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:22:18,155 INFO L124 PetriNetUnfolderBase]: 1934/3496 cut-off events. [2025-02-08 01:22:18,155 INFO L125 PetriNetUnfolderBase]: For 1204/1204 co-relation queries the response was YES. [2025-02-08 01:22:18,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7475 conditions, 3496 events. 1934/3496 cut-off events. For 1204/1204 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 20074 event pairs, 585 based on Foata normal form. 55/3506 useless extension candidates. Maximal degree in co-relation 4972. Up to 1287 conditions per place. [2025-02-08 01:22:18,171 INFO L140 encePairwiseOnDemand]: 35/38 looper letters, 61 selfloop transitions, 3 changer transitions 0/74 dead transitions. [2025-02-08 01:22:18,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 74 transitions, 406 flow [2025-02-08 01:22:18,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 01:22:18,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 01:22:18,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 108 transitions. [2025-02-08 01:22:18,172 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7105263157894737 [2025-02-08 01:22:18,172 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 128 flow. Second operand 4 states and 108 transitions. [2025-02-08 01:22:18,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 74 transitions, 406 flow [2025-02-08 01:22:18,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 74 transitions, 382 flow, removed 9 selfloop flow, removed 1 redundant places. [2025-02-08 01:22:18,176 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 136 flow [2025-02-08 01:22:18,176 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=47, PETRI_TRANSITIONS=38} [2025-02-08 01:22:18,176 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 12 predicate places. [2025-02-08 01:22:18,176 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 136 flow [2025-02-08 01:22:18,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 01:22:18,176 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:22:18,177 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:22:18,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 01:22:18,177 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:22:18,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:22:18,177 INFO L85 PathProgramCache]: Analyzing trace with hash 2018258979, now seen corresponding path program 3 times [2025-02-08 01:22:18,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:22:18,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505126115] [2025-02-08 01:22:18,178 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:22:18,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:22:18,321 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 50 statements into 3 equivalence classes. [2025-02-08 01:22:18,345 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 50 of 50 statements. [2025-02-08 01:22:18,345 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-08 01:22:18,345 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:22:18,431 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 01:22:18,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:22:18,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505126115] [2025-02-08 01:22:18,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505126115] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:22:18,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174576213] [2025-02-08 01:22:18,432 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:22:18,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:22:18,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:22:18,434 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:22:18,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-08 01:22:18,707 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 50 statements into 3 equivalence classes. [2025-02-08 01:22:18,799 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 50 of 50 statements. [2025-02-08 01:22:18,799 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-08 01:22:18,799 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:22:18,804 INFO L256 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-08 01:22:18,806 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:22:18,893 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:22:18,893 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:22:18,961 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:22:18,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174576213] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:22:18,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:22:18,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2025-02-08 01:22:18,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203440106] [2025-02-08 01:22:18,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:22:18,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 01:22:18,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:22:18,963 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 01:22:18,963 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-02-08 01:22:18,972 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2025-02-08 01:22:18,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 136 flow. Second operand has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 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 01:22:18,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:22:18,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2025-02-08 01:22:18,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:22:19,501 INFO L124 PetriNetUnfolderBase]: 3490/6178 cut-off events. [2025-02-08 01:22:19,502 INFO L125 PetriNetUnfolderBase]: For 2082/2082 co-relation queries the response was YES. [2025-02-08 01:22:19,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13732 conditions, 6178 events. 3490/6178 cut-off events. For 2082/2082 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 35272 event pairs, 318 based on Foata normal form. 88/5798 useless extension candidates. Maximal degree in co-relation 11004. Up to 1256 conditions per place. [2025-02-08 01:22:19,522 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 128 selfloop transitions, 21 changer transitions 0/157 dead transitions. [2025-02-08 01:22:19,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 157 transitions, 810 flow [2025-02-08 01:22:19,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 01:22:19,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 01:22:19,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 254 transitions. [2025-02-08 01:22:19,525 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6684210526315789 [2025-02-08 01:22:19,525 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 136 flow. Second operand 10 states and 254 transitions. [2025-02-08 01:22:19,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 157 transitions, 810 flow [2025-02-08 01:22:19,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 157 transitions, 798 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-02-08 01:22:19,534 INFO L231 Difference]: Finished difference. Result has 62 places, 54 transitions, 293 flow [2025-02-08 01:22:19,534 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=293, PETRI_PLACES=62, PETRI_TRANSITIONS=54} [2025-02-08 01:22:19,536 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 27 predicate places. [2025-02-08 01:22:19,536 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 54 transitions, 293 flow [2025-02-08 01:22:19,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 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 01:22:19,536 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:22:19,536 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:22:19,552 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-08 01:22:19,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:22:19,737 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:22:19,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:22:19,738 INFO L85 PathProgramCache]: Analyzing trace with hash -383652867, now seen corresponding path program 4 times [2025-02-08 01:22:19,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:22:19,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018450529] [2025-02-08 01:22:19,738 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:22:19,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:22:19,870 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 56 statements into 2 equivalence classes. [2025-02-08 01:22:19,872 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 54 of 56 statements. [2025-02-08 01:22:19,872 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-08 01:22:19,872 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:22:19,943 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-02-08 01:22:19,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:22:19,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018450529] [2025-02-08 01:22:19,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018450529] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:22:19,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:22:19,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 01:22:19,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055531659] [2025-02-08 01:22:19,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:22:19,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 01:22:19,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:22:19,945 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 01:22:19,945 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 01:22:19,945 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2025-02-08 01:22:19,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 54 transitions, 293 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 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 01:22:19,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:22:19,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2025-02-08 01:22:19,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:22:20,258 INFO L124 PetriNetUnfolderBase]: 1361/2981 cut-off events. [2025-02-08 01:22:20,259 INFO L125 PetriNetUnfolderBase]: For 5630/5670 co-relation queries the response was YES. [2025-02-08 01:22:20,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8703 conditions, 2981 events. 1361/2981 cut-off events. For 5630/5670 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 16990 event pairs, 395 based on Foata normal form. 300/3268 useless extension candidates. Maximal degree in co-relation 6784. Up to 1241 conditions per place. [2025-02-08 01:22:20,279 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 52 selfloop transitions, 8 changer transitions 0/74 dead transitions. [2025-02-08 01:22:20,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 74 transitions, 555 flow [2025-02-08 01:22:20,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 01:22:20,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 01:22:20,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2025-02-08 01:22:20,281 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-02-08 01:22:20,281 INFO L175 Difference]: Start difference. First operand has 62 places, 54 transitions, 293 flow. Second operand 3 states and 76 transitions. [2025-02-08 01:22:20,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 74 transitions, 555 flow [2025-02-08 01:22:20,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 74 transitions, 522 flow, removed 8 selfloop flow, removed 3 redundant places. [2025-02-08 01:22:20,291 INFO L231 Difference]: Finished difference. Result has 61 places, 54 transitions, 292 flow [2025-02-08 01:22:20,291 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=292, PETRI_PLACES=61, PETRI_TRANSITIONS=54} [2025-02-08 01:22:20,293 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 26 predicate places. [2025-02-08 01:22:20,293 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 54 transitions, 292 flow [2025-02-08 01:22:20,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 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 01:22:20,293 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:22:20,293 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:22:20,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 01:22:20,294 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:22:20,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:22:20,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1133671479, now seen corresponding path program 5 times [2025-02-08 01:22:20,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:22:20,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453610545] [2025-02-08 01:22:20,295 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:22:20,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:22:20,410 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 56 statements into 3 equivalence classes. [2025-02-08 01:22:20,428 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 56 of 56 statements. [2025-02-08 01:22:20,428 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-02-08 01:22:20,428 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:22:20,538 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 01:22:20,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:22:20,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453610545] [2025-02-08 01:22:20,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453610545] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:22:20,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093855811] [2025-02-08 01:22:20,538 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:22:20,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:22:20,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:22:20,544 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:22:20,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-08 01:22:20,821 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 56 statements into 3 equivalence classes. [2025-02-08 01:22:20,865 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 56 of 56 statements. [2025-02-08 01:22:20,865 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-02-08 01:22:20,865 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:22:20,868 INFO L256 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 01:22:20,869 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:22:20,910 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 01:22:20,910 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:22:20,961 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 01:22:20,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093855811] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:22:20,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:22:20,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2025-02-08 01:22:20,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467224752] [2025-02-08 01:22:20,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:22:20,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 01:22:20,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:22:20,963 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 01:22:20,963 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-02-08 01:22:20,965 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2025-02-08 01:22:20,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 54 transitions, 292 flow. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 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 01:22:20,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:22:20,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2025-02-08 01:22:20,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:22:21,249 INFO L124 PetriNetUnfolderBase]: 1893/3764 cut-off events. [2025-02-08 01:22:21,249 INFO L125 PetriNetUnfolderBase]: For 6554/6577 co-relation queries the response was YES. [2025-02-08 01:22:21,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11727 conditions, 3764 events. 1893/3764 cut-off events. For 6554/6577 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 21038 event pairs, 237 based on Foata normal form. 113/3858 useless extension candidates. Maximal degree in co-relation 9242. Up to 1074 conditions per place. [2025-02-08 01:22:21,266 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 92 selfloop transitions, 10 changer transitions 0/115 dead transitions. [2025-02-08 01:22:21,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 115 transitions, 788 flow [2025-02-08 01:22:21,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 01:22:21,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 01:22:21,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 155 transitions. [2025-02-08 01:22:21,267 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6798245614035088 [2025-02-08 01:22:21,267 INFO L175 Difference]: Start difference. First operand has 61 places, 54 transitions, 292 flow. Second operand 6 states and 155 transitions. [2025-02-08 01:22:21,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 115 transitions, 788 flow [2025-02-08 01:22:21,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 115 transitions, 752 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 01:22:21,275 INFO L231 Difference]: Finished difference. Result has 67 places, 55 transitions, 318 flow [2025-02-08 01:22:21,275 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=318, PETRI_PLACES=67, PETRI_TRANSITIONS=55} [2025-02-08 01:22:21,276 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 32 predicate places. [2025-02-08 01:22:21,276 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 55 transitions, 318 flow [2025-02-08 01:22:21,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 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 01:22:21,276 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:22:21,276 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:22:21,283 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-08 01:22:21,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:22:21,477 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:22:21,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:22:21,478 INFO L85 PathProgramCache]: Analyzing trace with hash -330524283, now seen corresponding path program 6 times [2025-02-08 01:22:21,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:22:21,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995302462] [2025-02-08 01:22:21,478 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 01:22:21,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:22:21,608 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 62 statements into 3 equivalence classes. [2025-02-08 01:22:21,631 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 62 of 62 statements. [2025-02-08 01:22:21,632 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-02-08 01:22:21,632 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:22:21,805 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 25 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 01:22:21,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:22:21,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995302462] [2025-02-08 01:22:21,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995302462] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:22:21,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104498418] [2025-02-08 01:22:21,806 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 01:22:21,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:22:21,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:22:21,808 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:22:21,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-08 01:22:22,113 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 62 statements into 3 equivalence classes. [2025-02-08 01:22:22,178 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 62 of 62 statements. [2025-02-08 01:22:22,178 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-02-08 01:22:22,178 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:22:22,180 INFO L256 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-08 01:22:22,181 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:22:22,224 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 10 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-02-08 01:22:22,224 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:22:22,267 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 10 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-02-08 01:22:22,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104498418] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:22:22,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:22:22,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 5 [2025-02-08 01:22:22,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351727545] [2025-02-08 01:22:22,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:22:22,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 01:22:22,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:22:22,268 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 01:22:22,268 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-02-08 01:22:22,270 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2025-02-08 01:22:22,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 55 transitions, 318 flow. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 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 01:22:22,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:22:22,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2025-02-08 01:22:22,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:22:22,394 INFO L124 PetriNetUnfolderBase]: 544/1209 cut-off events. [2025-02-08 01:22:22,395 INFO L125 PetriNetUnfolderBase]: For 2734/2736 co-relation queries the response was YES. [2025-02-08 01:22:22,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3824 conditions, 1209 events. 544/1209 cut-off events. For 2734/2736 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 4976 event pairs, 169 based on Foata normal form. 0/1203 useless extension candidates. Maximal degree in co-relation 2099. Up to 527 conditions per place. [2025-02-08 01:22:22,400 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 48 selfloop transitions, 9 changer transitions 0/66 dead transitions. [2025-02-08 01:22:22,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 66 transitions, 483 flow [2025-02-08 01:22:22,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 01:22:22,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 01:22:22,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2025-02-08 01:22:22,401 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5592105263157895 [2025-02-08 01:22:22,401 INFO L175 Difference]: Start difference. First operand has 67 places, 55 transitions, 318 flow. Second operand 4 states and 85 transitions. [2025-02-08 01:22:22,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 66 transitions, 483 flow [2025-02-08 01:22:22,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 66 transitions, 463 flow, removed 4 selfloop flow, removed 3 redundant places. [2025-02-08 01:22:22,405 INFO L231 Difference]: Finished difference. Result has 67 places, 50 transitions, 286 flow [2025-02-08 01:22:22,405 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=286, PETRI_PLACES=67, PETRI_TRANSITIONS=50} [2025-02-08 01:22:22,405 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 32 predicate places. [2025-02-08 01:22:22,406 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 50 transitions, 286 flow [2025-02-08 01:22:22,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 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 01:22:22,406 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:22:22,406 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:22:22,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-08 01:22:22,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-02-08 01:22:22,610 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:22:22,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:22:22,611 INFO L85 PathProgramCache]: Analyzing trace with hash -715153727, now seen corresponding path program 7 times [2025-02-08 01:22:22,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:22:22,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139463990] [2025-02-08 01:22:22,611 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 01:22:22,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:22:22,788 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-02-08 01:22:22,808 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-02-08 01:22:22,808 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:22:22,808 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:22:23,127 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:22:23,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:22:23,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139463990] [2025-02-08 01:22:23,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139463990] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:22:23,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376883456] [2025-02-08 01:22:23,128 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 01:22:23,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:22:23,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:22:23,129 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:22:23,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-08 01:22:23,439 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-02-08 01:22:23,482 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-02-08 01:22:23,482 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:22:23,482 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:22:23,484 INFO L256 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-02-08 01:22:23,486 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:22:23,704 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:22:23,704 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:22:24,006 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:22:24,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376883456] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:22:24,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:22:24,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 30 [2025-02-08 01:22:24,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303782175] [2025-02-08 01:22:24,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:22:24,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-02-08 01:22:24,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:22:24,008 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-02-08 01:22:24,008 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=840, Unknown=0, NotChecked=0, Total=930 [2025-02-08 01:22:24,215 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2025-02-08 01:22:24,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 50 transitions, 286 flow. Second operand has 31 states, 31 states have (on average 14.0) internal successors, (434), 31 states have internal predecessors, (434), 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 01:22:24,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:22:24,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2025-02-08 01:22:24,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:22:25,143 INFO L124 PetriNetUnfolderBase]: 590/1278 cut-off events. [2025-02-08 01:22:25,143 INFO L125 PetriNetUnfolderBase]: For 2137/2143 co-relation queries the response was YES. [2025-02-08 01:22:25,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3981 conditions, 1278 events. 590/1278 cut-off events. For 2137/2143 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 5130 event pairs, 82 based on Foata normal form. 36/1312 useless extension candidates. Maximal degree in co-relation 2353. Up to 232 conditions per place. [2025-02-08 01:22:25,147 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 0 selfloop transitions, 0 changer transitions 134/134 dead transitions. [2025-02-08 01:22:25,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 134 transitions, 882 flow [2025-02-08 01:22:25,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-08 01:22:25,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-02-08 01:22:25,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 239 transitions. [2025-02-08 01:22:25,148 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5241228070175439 [2025-02-08 01:22:25,148 INFO L175 Difference]: Start difference. First operand has 67 places, 50 transitions, 286 flow. Second operand 12 states and 239 transitions. [2025-02-08 01:22:25,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 134 transitions, 882 flow [2025-02-08 01:22:25,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 134 transitions, 849 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-08 01:22:25,152 INFO L231 Difference]: Finished difference. Result has 72 places, 0 transitions, 0 flow [2025-02-08 01:22:25,152 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=72, PETRI_TRANSITIONS=0} [2025-02-08 01:22:25,153 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 37 predicate places. [2025-02-08 01:22:25,153 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 0 transitions, 0 flow [2025-02-08 01:22:25,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 14.0) internal successors, (434), 31 states have internal predecessors, (434), 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 01:22:25,155 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2025-02-08 01:22:25,155 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2025-02-08 01:22:25,155 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2025-02-08 01:22:25,166 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-08 01:22:25,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:22:25,360 INFO L422 BasicCegarLoop]: Path program histogram: [7, 1, 1] [2025-02-08 01:22:25,363 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-02-08 01:22:25,363 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-08 01:22:25,366 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.02 01:22:25 BasicIcfg [2025-02-08 01:22:25,366 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-08 01:22:25,366 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-08 01:22:25,366 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-08 01:22:25,366 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-08 01:22:25,367 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:22:14" (3/4) ... [2025-02-08 01:22:25,368 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-08 01:22:25,370 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2025-02-08 01:22:25,370 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2025-02-08 01:22:25,374 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 140 nodes and edges [2025-02-08 01:22:25,375 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 69 nodes and edges [2025-02-08 01:22:25,375 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 35 nodes and edges [2025-02-08 01:22:25,375 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2025-02-08 01:22:25,376 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2025-02-08 01:22:25,376 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-02-08 01:22:25,376 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-02-08 01:22:25,425 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-08 01:22:25,426 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-08 01:22:25,426 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-08 01:22:25,426 INFO L158 Benchmark]: Toolchain (without parser) took 12149.57ms. Allocated memory was 201.3MB in the beginning and 562.0MB in the end (delta: 360.7MB). Free memory was 157.8MB in the beginning and 272.4MB in the end (delta: -114.7MB). Peak memory consumption was 245.9MB. Max. memory is 16.1GB. [2025-02-08 01:22:25,427 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 218.1MB. Free memory is still 132.1MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 01:22:25,427 INFO L158 Benchmark]: CACSL2BoogieTranslator took 373.30ms. Allocated memory is still 201.3MB. Free memory was 157.4MB in the beginning and 129.9MB in the end (delta: 27.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-02-08 01:22:25,428 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.44ms. Allocated memory is still 201.3MB. Free memory was 129.9MB in the beginning and 127.0MB in the end (delta: 2.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 01:22:25,428 INFO L158 Benchmark]: Boogie Preprocessor took 67.41ms. Allocated memory is still 201.3MB. Free memory was 127.0MB in the beginning and 124.0MB in the end (delta: 2.9MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 01:22:25,429 INFO L158 Benchmark]: IcfgBuilder took 1078.42ms. Allocated memory is still 201.3MB. Free memory was 124.0MB in the beginning and 119.8MB in the end (delta: 4.3MB). Peak memory consumption was 87.5MB. Max. memory is 16.1GB. [2025-02-08 01:22:25,430 INFO L158 Benchmark]: TraceAbstraction took 10513.73ms. Allocated memory was 201.3MB in the beginning and 562.0MB in the end (delta: 360.7MB). Free memory was 119.8MB in the beginning and 279.5MB in the end (delta: -159.7MB). Peak memory consumption was 203.8MB. Max. memory is 16.1GB. [2025-02-08 01:22:25,430 INFO L158 Benchmark]: Witness Printer took 59.42ms. Allocated memory is still 562.0MB. Free memory was 279.5MB in the beginning and 272.4MB in the end (delta: 7.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 01:22:25,431 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 218.1MB. Free memory is still 132.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 373.30ms. Allocated memory is still 201.3MB. Free memory was 157.4MB in the beginning and 129.9MB in the end (delta: 27.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.44ms. Allocated memory is still 201.3MB. Free memory was 129.9MB in the beginning and 127.0MB in the end (delta: 2.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.41ms. Allocated memory is still 201.3MB. Free memory was 127.0MB in the beginning and 124.0MB in the end (delta: 2.9MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 1078.42ms. Allocated memory is still 201.3MB. Free memory was 124.0MB in the beginning and 119.8MB in the end (delta: 4.3MB). Peak memory consumption was 87.5MB. Max. memory is 16.1GB. * TraceAbstraction took 10513.73ms. Allocated memory was 201.3MB in the beginning and 562.0MB in the end (delta: 360.7MB). Free memory was 119.8MB in the beginning and 279.5MB in the end (delta: -159.7MB). Peak memory consumption was 203.8MB. Max. memory is 16.1GB. * Witness Printer took 59.42ms. Allocated memory is still 562.0MB. Free memory was 279.5MB in the beginning and 272.4MB in the end (delta: 7.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 919]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 55 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 10.4s, OverallIterations: 9, TraceHistogramMax: 4, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 525 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 512 mSDsluCounter, 9 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2853 IncrementalHoareTripleChecker+Invalid, 2879 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 1 mSDtfsCounter, 2853 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 562 GetRequests, 493 SyntacticMatches, 10 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=318occurred in iteration=7, InterpolantAutomatonStates: 51, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 646 NumberOfCodeBlocks, 620 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 883 ConstructedInterpolants, 0 QuantifiedInterpolants, 3150 SizeOfPredicates, 1 NumberOfNonLiveVariables, 2464 ConjunctsInSsa, 53 ConjunctsInUnsatCore, 19 InterpolantComputations, 4 PerfectInterpolantSequences, 173/420 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-02-08 01:22:25,446 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE