./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 e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 29016034e4102bf62d4fcba069301a54da1d77dfd5739e4cf52e395ddaa22e38 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 17:40:22,453 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 17:40:22,505 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 17:40:22,509 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 17:40:22,509 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 17:40:22,533 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 17:40:22,534 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 17:40:22,535 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 17:40:22,535 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 17:40:22,535 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 17:40:22,536 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 17:40:22,536 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 17:40:22,536 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 17:40:22,536 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 17:40:22,537 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 17:40:22,537 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 17:40:22,537 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 17:40:22,537 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 17:40:22,537 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 17:40:22,537 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 17:40:22,538 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 17:40:22,538 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 17:40:22,538 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 17:40:22,538 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 17:40:22,538 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 17:40:22,538 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 17:40:22,539 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 17:40:22,539 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 17:40:22,539 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 17:40:22,539 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 17:40:22,539 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 17:40:22,539 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 17:40:22,539 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 17:40:22,539 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 17:40:22,540 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 17:40:22,540 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 17:40:22,540 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 17:40:22,540 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 17:40:22,540 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 17:40:22,540 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 17:40:22,540 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 17:40:22,540 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 17:40:22,540 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 17:40:22,541 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29016034e4102bf62d4fcba069301a54da1d77dfd5739e4cf52e395ddaa22e38 [2025-03-08 17:40:22,769 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 17:40:22,775 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 17:40:22,777 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 17:40:22,777 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 17:40:22,778 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 17:40:22,778 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i [2025-03-08 17:40:23,884 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/372bf6a3f/22413550112e4b7daab1f8d8c087f6f3/FLAG7e9a84695 [2025-03-08 17:40:24,202 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 17:40:24,202 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i [2025-03-08 17:40:24,219 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/372bf6a3f/22413550112e4b7daab1f8d8c087f6f3/FLAG7e9a84695 [2025-03-08 17:40:24,463 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/372bf6a3f/22413550112e4b7daab1f8d8c087f6f3 [2025-03-08 17:40:24,465 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 17:40:24,466 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 17:40:24,467 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 17:40:24,467 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 17:40:24,470 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 17:40:24,470 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:40:24" (1/1) ... [2025-03-08 17:40:24,471 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b90d30c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:40:24, skipping insertion in model container [2025-03-08 17:40:24,471 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:40:24" (1/1) ... [2025-03-08 17:40:24,492 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 17:40:24,807 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i[39757,39770] [2025-03-08 17:40:24,810 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 17:40:24,833 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 17:40:24,874 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i[39757,39770] [2025-03-08 17:40:24,875 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 17:40:24,920 INFO L204 MainTranslator]: Completed translation [2025-03-08 17:40:24,920 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:40:24 WrapperNode [2025-03-08 17:40:24,921 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 17:40:24,921 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 17:40:24,922 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 17:40:24,922 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 17:40:24,926 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:40:24" (1/1) ... [2025-03-08 17:40:24,943 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:40:24" (1/1) ... [2025-03-08 17:40:24,966 INFO L138 Inliner]: procedures = 243, calls = 26, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 260 [2025-03-08 17:40:24,968 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 17:40:24,968 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 17:40:24,968 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 17:40:24,968 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 17:40:24,977 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:40:24" (1/1) ... [2025-03-08 17:40:24,977 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:40:24" (1/1) ... [2025-03-08 17:40:24,980 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:40:24" (1/1) ... [2025-03-08 17:40:24,996 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]. [2025-03-08 17:40:24,999 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:40:24" (1/1) ... [2025-03-08 17:40:25,000 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:40:24" (1/1) ... [2025-03-08 17:40:25,010 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:40:24" (1/1) ... [2025-03-08 17:40:25,011 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:40:24" (1/1) ... [2025-03-08 17:40:25,013 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:40:24" (1/1) ... [2025-03-08 17:40:25,013 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:40:24" (1/1) ... [2025-03-08 17:40:25,016 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 17:40:25,018 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 17:40:25,019 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 17:40:25,019 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 17:40:25,020 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:40:24" (1/1) ... [2025-03-08 17:40:25,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 17:40:25,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:40:25,044 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 17:40:25,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 17:40:25,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-03-08 17:40:25,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-03-08 17:40:25,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-03-08 17:40:25,062 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-08 17:40:25,062 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-08 17:40:25,062 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-08 17:40:25,062 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-08 17:40:25,062 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-08 17:40:25,062 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-08 17:40:25,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 17:40:25,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 17:40:25,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-08 17:40:25,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-08 17:40:25,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 17:40:25,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 17:40:25,063 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-08 17:40:25,180 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 17:40:25,182 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 17:40:25,451 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-08 17:40:25,451 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 17:40:25,894 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 17:40:25,894 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 17:40:25,894 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:40:25 BoogieIcfgContainer [2025-03-08 17:40:25,895 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 17:40:25,896 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 17:40:25,896 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 17:40:25,899 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 17:40:25,899 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 05:40:24" (1/3) ... [2025-03-08 17:40:25,900 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59916abe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:40:25, skipping insertion in model container [2025-03-08 17:40:25,900 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:40:24" (2/3) ... [2025-03-08 17:40:25,900 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59916abe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:40:25, skipping insertion in model container [2025-03-08 17:40:25,900 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:40:25" (3/3) ... [2025-03-08 17:40:25,901 INFO L128 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_ok.i [2025-03-08 17:40:25,911 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 17:40:25,913 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. [2025-03-08 17:40:25,913 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-08 17:40:25,981 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-08 17:40:26,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 38 transitions, 90 flow [2025-03-08 17:40:26,034 INFO L124 PetriNetUnfolderBase]: 6/36 cut-off events. [2025-03-08 17:40:26,035 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-08 17:40:26,039 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. [2025-03-08 17:40:26,039 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 38 transitions, 90 flow [2025-03-08 17:40:26,044 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 32 transitions, 76 flow [2025-03-08 17:40:26,051 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 17:40:26,058 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;@24178812, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 17:40:26,060 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-03-08 17:40:26,070 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-08 17:40:26,070 INFO L124 PetriNetUnfolderBase]: 4/31 cut-off events. [2025-03-08 17:40:26,070 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-08 17:40:26,070 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:40:26,071 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:40:26,071 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:40:26,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:40:26,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1139875935, now seen corresponding path program 1 times [2025-03-08 17:40:26,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:40:26,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722598998] [2025-03-08 17:40:26,081 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:40:26,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:40:26,387 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-08 17:40:26,449 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-08 17:40:26,453 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:40:26,453 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:40:26,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:40:26,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:40:26,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722598998] [2025-03-08 17:40:26,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722598998] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:40:26,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:40:26,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 17:40:26,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227203463] [2025-03-08 17:40:26,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:40:26,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 17:40:26,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:40:26,687 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 17:40:26,687 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 17:40:26,691 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2025-03-08 17:40:26,693 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) [2025-03-08 17:40:26,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:40:26,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2025-03-08 17:40:26,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:40:26,880 INFO L124 PetriNetUnfolderBase]: 414/749 cut-off events. [2025-03-08 17:40:26,881 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2025-03-08 17:40:26,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1424 conditions, 749 events. 414/749 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3327 event pairs, 160 based on Foata normal form. 17/754 useless extension candidates. Maximal degree in co-relation 1336. Up to 394 conditions per place. [2025-03-08 17:40:26,887 INFO L140 encePairwiseOnDemand]: 35/38 looper letters, 37 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2025-03-08 17:40:26,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 48 transitions, 189 flow [2025-03-08 17:40:26,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 17:40:26,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-08 17:40:26,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2025-03-08 17:40:26,899 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6929824561403509 [2025-03-08 17:40:26,900 INFO L175 Difference]: Start difference. First operand has 35 places, 32 transitions, 76 flow. Second operand 3 states and 79 transitions. [2025-03-08 17:40:26,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 48 transitions, 189 flow [2025-03-08 17:40:26,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 48 transitions, 179 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-08 17:40:26,907 INFO L231 Difference]: Finished difference. Result has 34 places, 33 transitions, 80 flow [2025-03-08 17:40:26,909 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} [2025-03-08 17:40:26,913 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2025-03-08 17:40:26,915 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 33 transitions, 80 flow [2025-03-08 17:40:26,915 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) [2025-03-08 17:40:26,916 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:40:26,916 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:40:26,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 17:40:26,916 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:40:26,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:40:26,917 INFO L85 PathProgramCache]: Analyzing trace with hash 828176345, now seen corresponding path program 1 times [2025-03-08 17:40:26,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:40:26,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673697434] [2025-03-08 17:40:26,917 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:40:26,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:40:27,180 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-08 17:40:27,200 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-08 17:40:27,201 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:40:27,201 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:40:27,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-08 17:40:27,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:40:27,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673697434] [2025-03-08 17:40:27,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673697434] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:40:27,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:40:27,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 17:40:27,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358403558] [2025-03-08 17:40:27,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:40:27,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 17:40:27,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:40:27,283 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 17:40:27,283 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 17:40:27,285 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2025-03-08 17:40:27,286 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) [2025-03-08 17:40:27,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:40:27,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2025-03-08 17:40:27,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:40:27,443 INFO L124 PetriNetUnfolderBase]: 735/1332 cut-off events. [2025-03-08 17:40:27,443 INFO L125 PetriNetUnfolderBase]: For 124/124 co-relation queries the response was YES. [2025-03-08 17:40:27,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2607 conditions, 1332 events. 735/1332 cut-off events. For 124/124 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 6887 event pairs, 295 based on Foata normal form. 30/1339 useless extension candidates. Maximal degree in co-relation 500. Up to 669 conditions per place. [2025-03-08 17:40:27,453 INFO L140 encePairwiseOnDemand]: 35/38 looper letters, 40 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2025-03-08 17:40:27,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 51 transitions, 211 flow [2025-03-08 17:40:27,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 17:40:27,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-08 17:40:27,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2025-03-08 17:40:27,455 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7017543859649122 [2025-03-08 17:40:27,455 INFO L175 Difference]: Start difference. First operand has 34 places, 33 transitions, 80 flow. Second operand 3 states and 80 transitions. [2025-03-08 17:40:27,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 51 transitions, 211 flow [2025-03-08 17:40:27,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 51 transitions, 207 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-08 17:40:27,457 INFO L231 Difference]: Finished difference. Result has 36 places, 34 transitions, 90 flow [2025-03-08 17:40:27,457 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} [2025-03-08 17:40:27,458 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 1 predicate places. [2025-03-08 17:40:27,458 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 34 transitions, 90 flow [2025-03-08 17:40:27,458 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) [2025-03-08 17:40:27,458 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:40:27,458 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] [2025-03-08 17:40:27,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 17:40:27,459 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:40:27,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:40:27,459 INFO L85 PathProgramCache]: Analyzing trace with hash 188298567, now seen corresponding path program 1 times [2025-03-08 17:40:27,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:40:27,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718918787] [2025-03-08 17:40:27,459 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:40:27,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:40:27,678 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-08 17:40:27,711 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-08 17:40:27,711 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:40:27,711 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:40:27,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:40:27,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:40:27,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718918787] [2025-03-08 17:40:27,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718918787] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:40:27,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538681217] [2025-03-08 17:40:27,831 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:40:27,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:40:27,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:40:27,838 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:40:27,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 17:40:28,118 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-08 17:40:28,156 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-08 17:40:28,156 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:40:28,156 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:40:28,159 INFO L256 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 17:40:28,162 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:40:28,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:40:28,197 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 17:40:28,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:40:28,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538681217] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 17:40:28,232 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 17:40:28,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-03-08 17:40:28,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976511122] [2025-03-08 17:40:28,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 17:40:28,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 17:40:28,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:40:28,233 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 17:40:28,233 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-08 17:40:28,237 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2025-03-08 17:40:28,237 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) [2025-03-08 17:40:28,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:40:28,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2025-03-08 17:40:28,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:40:28,521 INFO L124 PetriNetUnfolderBase]: 1533/2646 cut-off events. [2025-03-08 17:40:28,521 INFO L125 PetriNetUnfolderBase]: For 312/312 co-relation queries the response was YES. [2025-03-08 17:40:28,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5456 conditions, 2646 events. 1533/2646 cut-off events. For 312/312 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 13505 event pairs, 118 based on Foata normal form. 90/2724 useless extension candidates. Maximal degree in co-relation 2026. Up to 548 conditions per place. [2025-03-08 17:40:28,534 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 89 selfloop transitions, 6 changer transitions 0/103 dead transitions. [2025-03-08 17:40:28,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 103 transitions, 458 flow [2025-03-08 17:40:28,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 17:40:28,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-08 17:40:28,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 165 transitions. [2025-03-08 17:40:28,536 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7236842105263158 [2025-03-08 17:40:28,536 INFO L175 Difference]: Start difference. First operand has 36 places, 34 transitions, 90 flow. Second operand 6 states and 165 transitions. [2025-03-08 17:40:28,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 103 transitions, 458 flow [2025-03-08 17:40:28,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 103 transitions, 456 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-08 17:40:28,538 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 128 flow [2025-03-08 17:40:28,539 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} [2025-03-08 17:40:28,539 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 9 predicate places. [2025-03-08 17:40:28,540 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 128 flow [2025-03-08 17:40:28,540 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) [2025-03-08 17:40:28,540 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:40:28,540 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] [2025-03-08 17:40:28,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-08 17:40:28,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:40:28,741 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:40:28,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:40:28,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1724257439, now seen corresponding path program 2 times [2025-03-08 17:40:28,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:40:28,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877269330] [2025-03-08 17:40:28,741 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 17:40:28,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:40:28,896 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 44 statements into 2 equivalence classes. [2025-03-08 17:40:28,922 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 44 of 44 statements. [2025-03-08 17:40:28,922 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 17:40:28,922 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:40:28,999 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 24 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-03-08 17:40:29,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:40:29,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877269330] [2025-03-08 17:40:29,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877269330] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:40:29,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357940079] [2025-03-08 17:40:29,000 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 17:40:29,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:40:29,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:40:29,002 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:40:29,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 17:40:29,259 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 44 statements into 2 equivalence classes. [2025-03-08 17:40:29,322 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 44 of 44 statements. [2025-03-08 17:40:29,322 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 17:40:29,322 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:40:29,324 INFO L256 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 17:40:29,326 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:40:29,355 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-03-08 17:40:29,355 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 17:40:29,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357940079] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:40:29,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 17:40:29,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2025-03-08 17:40:29,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414392275] [2025-03-08 17:40:29,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:40:29,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 17:40:29,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:40:29,358 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 17:40:29,358 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 17:40:29,362 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2025-03-08 17:40:29,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 128 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:40:29,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:40:29,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2025-03-08 17:40:29,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:40:29,663 INFO L124 PetriNetUnfolderBase]: 1854/3262 cut-off events. [2025-03-08 17:40:29,663 INFO L125 PetriNetUnfolderBase]: For 1062/1062 co-relation queries the response was YES. [2025-03-08 17:40:29,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7249 conditions, 3262 events. 1854/3262 cut-off events. For 1062/1062 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 15759 event pairs, 445 based on Foata normal form. 0/3055 useless extension candidates. Maximal degree in co-relation 5313. Up to 1593 conditions per place. [2025-03-08 17:40:29,680 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 49 selfloop transitions, 4 changer transitions 0/61 dead transitions. [2025-03-08 17:40:29,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 61 transitions, 324 flow [2025-03-08 17:40:29,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 17:40:29,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-08 17:40:29,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2025-03-08 17:40:29,683 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5986842105263158 [2025-03-08 17:40:29,683 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 128 flow. Second operand 4 states and 91 transitions. [2025-03-08 17:40:29,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 61 transitions, 324 flow [2025-03-08 17:40:29,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 61 transitions, 309 flow, removed 6 selfloop flow, removed 1 redundant places. [2025-03-08 17:40:29,689 INFO L231 Difference]: Finished difference. Result has 48 places, 39 transitions, 145 flow [2025-03-08 17:40:29,689 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=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=145, PETRI_PLACES=48, PETRI_TRANSITIONS=39} [2025-03-08 17:40:29,690 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 13 predicate places. [2025-03-08 17:40:29,690 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 145 flow [2025-03-08 17:40:29,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:40:29,690 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:40:29,691 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] [2025-03-08 17:40:29,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-08 17:40:29,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2025-03-08 17:40:29,895 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:40:29,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:40:29,896 INFO L85 PathProgramCache]: Analyzing trace with hash 694047995, now seen corresponding path program 3 times [2025-03-08 17:40:29,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:40:29,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729989594] [2025-03-08 17:40:29,896 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 17:40:29,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:40:30,032 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 56 statements into 4 equivalence classes. [2025-03-08 17:40:30,060 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 44 of 56 statements. [2025-03-08 17:40:30,060 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-08 17:40:30,060 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:40:30,192 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-08 17:40:30,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:40:30,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729989594] [2025-03-08 17:40:30,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729989594] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:40:30,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:40:30,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 17:40:30,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885079495] [2025-03-08 17:40:30,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:40:30,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 17:40:30,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:40:30,194 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 17:40:30,194 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 17:40:30,195 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2025-03-08 17:40:30,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 145 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:40:30,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:40:30,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2025-03-08 17:40:30,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:40:30,357 INFO L124 PetriNetUnfolderBase]: 777/1670 cut-off events. [2025-03-08 17:40:30,358 INFO L125 PetriNetUnfolderBase]: For 959/959 co-relation queries the response was YES. [2025-03-08 17:40:30,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4024 conditions, 1670 events. 777/1670 cut-off events. For 959/959 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 7753 event pairs, 214 based on Foata normal form. 126/1795 useless extension candidates. Maximal degree in co-relation 2856. Up to 595 conditions per place. [2025-03-08 17:40:30,365 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 42 selfloop transitions, 15 changer transitions 0/67 dead transitions. [2025-03-08 17:40:30,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 67 transitions, 386 flow [2025-03-08 17:40:30,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 17:40:30,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-08 17:40:30,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 104 transitions. [2025-03-08 17:40:30,367 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5473684210526316 [2025-03-08 17:40:30,367 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 145 flow. Second operand 5 states and 104 transitions. [2025-03-08 17:40:30,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 67 transitions, 386 flow [2025-03-08 17:40:30,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 67 transitions, 385 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-08 17:40:30,372 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 186 flow [2025-03-08 17:40:30,372 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=186, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2025-03-08 17:40:30,372 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 16 predicate places. [2025-03-08 17:40:30,372 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 186 flow [2025-03-08 17:40:30,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:40:30,373 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:40:30,373 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] [2025-03-08 17:40:30,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 17:40:30,373 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:40:30,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:40:30,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1404627235, now seen corresponding path program 4 times [2025-03-08 17:40:30,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:40:30,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311200800] [2025-03-08 17:40:30,373 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 17:40:30,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:40:30,537 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 56 statements into 2 equivalence classes. [2025-03-08 17:40:30,546 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 54 of 56 statements. [2025-03-08 17:40:30,546 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-08 17:40:30,546 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:40:30,645 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-08 17:40:30,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:40:30,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311200800] [2025-03-08 17:40:30,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311200800] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:40:30,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366604544] [2025-03-08 17:40:30,646 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 17:40:30,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:40:30,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:40:30,648 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:40:30,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 17:40:30,917 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 56 statements into 2 equivalence classes. [2025-03-08 17:40:30,936 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 54 of 56 statements. [2025-03-08 17:40:30,937 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-08 17:40:30,937 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:40:30,938 INFO L256 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-08 17:40:30,940 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:40:30,997 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-08 17:40:30,998 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 17:40:31,049 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-08 17:40:31,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366604544] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 17:40:31,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 17:40:31,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 7 [2025-03-08 17:40:31,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225275886] [2025-03-08 17:40:31,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 17:40:31,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 17:40:31,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:40:31,051 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 17:40:31,051 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-08 17:40:31,054 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2025-03-08 17:40:31,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 186 flow. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:40:31,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:40:31,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2025-03-08 17:40:31,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:40:31,376 INFO L124 PetriNetUnfolderBase]: 1854/3711 cut-off events. [2025-03-08 17:40:31,376 INFO L125 PetriNetUnfolderBase]: For 2610/2626 co-relation queries the response was YES. [2025-03-08 17:40:31,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10100 conditions, 3711 events. 1854/3711 cut-off events. For 2610/2626 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 21038 event pairs, 179 based on Foata normal form. 207/3912 useless extension candidates. Maximal degree in co-relation 7945. Up to 1072 conditions per place. [2025-03-08 17:40:31,393 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 97 selfloop transitions, 6 changer transitions 0/113 dead transitions. [2025-03-08 17:40:31,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 113 transitions, 710 flow [2025-03-08 17:40:31,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 17:40:31,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-08 17:40:31,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 157 transitions. [2025-03-08 17:40:31,394 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6885964912280702 [2025-03-08 17:40:31,394 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 186 flow. Second operand 6 states and 157 transitions. [2025-03-08 17:40:31,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 113 transitions, 710 flow [2025-03-08 17:40:31,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 113 transitions, 710 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-08 17:40:31,398 INFO L231 Difference]: Finished difference. Result has 60 places, 47 transitions, 232 flow [2025-03-08 17:40:31,398 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=232, PETRI_PLACES=60, PETRI_TRANSITIONS=47} [2025-03-08 17:40:31,399 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 25 predicate places. [2025-03-08 17:40:31,399 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 47 transitions, 232 flow [2025-03-08 17:40:31,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:40:31,399 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:40:31,399 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] [2025-03-08 17:40:31,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-08 17:40:31,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:40:31,600 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:40:31,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:40:31,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1978039941, now seen corresponding path program 5 times [2025-03-08 17:40:31,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:40:31,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508950637] [2025-03-08 17:40:31,601 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 17:40:31,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:40:31,737 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 62 statements into 6 equivalence classes. [2025-03-08 17:40:31,759 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 62 of 62 statements. [2025-03-08 17:40:31,760 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-03-08 17:40:31,760 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:40:32,023 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 29 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-08 17:40:32,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:40:32,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508950637] [2025-03-08 17:40:32,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508950637] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:40:32,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294940274] [2025-03-08 17:40:32,025 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 17:40:32,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:40:32,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:40:32,027 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:40:32,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-08 17:40:32,318 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 62 statements into 6 equivalence classes. [2025-03-08 17:40:32,371 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 62 of 62 statements. [2025-03-08 17:40:32,371 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-03-08 17:40:32,371 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:40:32,374 INFO L256 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-08 17:40:32,376 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:40:32,428 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-08 17:40:32,429 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 17:40:32,490 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-08 17:40:32,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294940274] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 17:40:32,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 17:40:32,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 5 [2025-03-08 17:40:32,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959527946] [2025-03-08 17:40:32,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 17:40:32,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 17:40:32,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:40:32,493 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 17:40:32,493 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-03-08 17:40:32,494 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2025-03-08 17:40:32,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 47 transitions, 232 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:40:32,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:40:32,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2025-03-08 17:40:32,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:40:32,634 INFO L124 PetriNetUnfolderBase]: 544/1202 cut-off events. [2025-03-08 17:40:32,635 INFO L125 PetriNetUnfolderBase]: For 1587/1589 co-relation queries the response was YES. [2025-03-08 17:40:32,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3691 conditions, 1202 events. 544/1202 cut-off events. For 1587/1589 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 4899 event pairs, 151 based on Foata normal form. 0/1200 useless extension candidates. Maximal degree in co-relation 2032. Up to 530 conditions per place. [2025-03-08 17:40:32,641 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 53 selfloop transitions, 3 changer transitions 3/68 dead transitions. [2025-03-08 17:40:32,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 68 transitions, 473 flow [2025-03-08 17:40:32,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 17:40:32,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-08 17:40:32,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2025-03-08 17:40:32,643 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5592105263157895 [2025-03-08 17:40:32,643 INFO L175 Difference]: Start difference. First operand has 60 places, 47 transitions, 232 flow. Second operand 4 states and 85 transitions. [2025-03-08 17:40:32,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 68 transitions, 473 flow [2025-03-08 17:40:32,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 68 transitions, 457 flow, removed 6 selfloop flow, removed 1 redundant places. [2025-03-08 17:40:32,646 INFO L231 Difference]: Finished difference. Result has 62 places, 44 transitions, 216 flow [2025-03-08 17:40:32,646 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=216, PETRI_PLACES=62, PETRI_TRANSITIONS=44} [2025-03-08 17:40:32,647 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 27 predicate places. [2025-03-08 17:40:32,648 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 44 transitions, 216 flow [2025-03-08 17:40:32,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:40:32,648 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:40:32,648 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] [2025-03-08 17:40:32,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-08 17:40:32,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:40:32,849 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:40:32,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:40:32,850 INFO L85 PathProgramCache]: Analyzing trace with hash -361909783, now seen corresponding path program 6 times [2025-03-08 17:40:32,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:40:32,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008941752] [2025-03-08 17:40:32,850 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 17:40:32,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:40:33,065 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 62 statements into 3 equivalence classes. [2025-03-08 17:40:33,115 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 62 of 62 statements. [2025-03-08 17:40:33,115 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-03-08 17:40:33,115 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:40:33,460 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:40:33,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:40:33,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008941752] [2025-03-08 17:40:33,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008941752] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:40:33,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119816356] [2025-03-08 17:40:33,460 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 17:40:33,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:40:33,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:40:33,462 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:40:33,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-08 17:40:33,744 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 62 statements into 3 equivalence classes. [2025-03-08 17:40:33,844 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 62 of 62 statements. [2025-03-08 17:40:33,844 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-03-08 17:40:33,844 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:40:33,846 INFO L256 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-03-08 17:40:33,848 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:40:34,094 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:40:34,094 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 17:40:34,415 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:40:34,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119816356] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 17:40:34,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 17:40:34,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 30 [2025-03-08 17:40:34,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396046850] [2025-03-08 17:40:34,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 17:40:34,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-03-08 17:40:34,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:40:34,418 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-03-08 17:40:34,419 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=843, Unknown=0, NotChecked=0, Total=930 [2025-03-08 17:40:34,567 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2025-03-08 17:40:34,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 44 transitions, 216 flow. Second operand has 31 states, 31 states have (on average 14.129032258064516) internal successors, (438), 31 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:40:34,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:40:34,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2025-03-08 17:40:34,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:40:35,650 INFO L124 PetriNetUnfolderBase]: 585/1253 cut-off events. [2025-03-08 17:40:35,650 INFO L125 PetriNetUnfolderBase]: For 1567/1567 co-relation queries the response was YES. [2025-03-08 17:40:35,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3818 conditions, 1253 events. 585/1253 cut-off events. For 1567/1567 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 5105 event pairs, 35 based on Foata normal form. 30/1279 useless extension candidates. Maximal degree in co-relation 2328. Up to 240 conditions per place. [2025-03-08 17:40:35,654 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 0 selfloop transitions, 0 changer transitions 130/130 dead transitions. [2025-03-08 17:40:35,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 130 transitions, 884 flow [2025-03-08 17:40:35,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-08 17:40:35,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-08 17:40:35,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 238 transitions. [2025-03-08 17:40:35,656 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5219298245614035 [2025-03-08 17:40:35,656 INFO L175 Difference]: Start difference. First operand has 62 places, 44 transitions, 216 flow. Second operand 12 states and 238 transitions. [2025-03-08 17:40:35,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 130 transitions, 884 flow [2025-03-08 17:40:35,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 130 transitions, 852 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-08 17:40:35,659 INFO L231 Difference]: Finished difference. Result has 67 places, 0 transitions, 0 flow [2025-03-08 17:40:35,659 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=67, PETRI_TRANSITIONS=0} [2025-03-08 17:40:35,661 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 32 predicate places. [2025-03-08 17:40:35,661 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 0 transitions, 0 flow [2025-03-08 17:40:35,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 14.129032258064516) internal successors, (438), 31 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:40:35,663 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2025-03-08 17:40:35,663 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2025-03-08 17:40:35,663 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2025-03-08 17:40:35,672 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-08 17:40:35,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:40:35,864 INFO L422 BasicCegarLoop]: Path program histogram: [6, 1, 1] [2025-03-08 17:40:35,866 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-08 17:40:35,866 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-08 17:40:35,871 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.03 05:40:35 BasicIcfg [2025-03-08 17:40:35,871 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-08 17:40:35,872 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-08 17:40:35,872 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-08 17:40:35,872 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-08 17:40:35,872 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:40:25" (3/4) ... [2025-03-08 17:40:35,873 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-08 17:40:35,875 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2025-03-08 17:40:35,875 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2025-03-08 17:40:35,882 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 141 nodes and edges [2025-03-08 17:40:35,884 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 69 nodes and edges [2025-03-08 17:40:35,884 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 34 nodes and edges [2025-03-08 17:40:35,885 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2025-03-08 17:40:35,885 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2025-03-08 17:40:35,885 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-03-08 17:40:35,886 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-08 17:40:35,946 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-08 17:40:35,946 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-08 17:40:35,946 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-08 17:40:35,946 INFO L158 Benchmark]: Toolchain (without parser) took 11480.38ms. Allocated memory was 167.8MB in the beginning and 637.5MB in the end (delta: 469.8MB). Free memory was 122.6MB in the beginning and 294.8MB in the end (delta: -172.1MB). Peak memory consumption was 298.7MB. Max. memory is 16.1GB. [2025-03-08 17:40:35,947 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 201.3MB. Free memory is still 116.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 17:40:35,947 INFO L158 Benchmark]: CACSL2BoogieTranslator took 454.10ms. Allocated memory is still 167.8MB. Free memory was 122.6MB in the beginning and 95.1MB in the end (delta: 27.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-08 17:40:35,947 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.36ms. Allocated memory is still 167.8MB. Free memory was 95.1MB in the beginning and 92.4MB in the end (delta: 2.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 17:40:35,947 INFO L158 Benchmark]: Boogie Preprocessor took 48.13ms. Allocated memory is still 167.8MB. Free memory was 92.4MB in the beginning and 88.6MB in the end (delta: 3.8MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 17:40:35,947 INFO L158 Benchmark]: IcfgBuilder took 876.40ms. Allocated memory is still 167.8MB. Free memory was 88.6MB in the beginning and 53.9MB in the end (delta: 34.7MB). Peak memory consumption was 69.3MB. Max. memory is 16.1GB. [2025-03-08 17:40:35,947 INFO L158 Benchmark]: TraceAbstraction took 9975.11ms. Allocated memory was 167.8MB in the beginning and 637.5MB in the end (delta: 469.8MB). Free memory was 53.0MB in the beginning and 302.5MB in the end (delta: -249.5MB). Peak memory consumption was 217.2MB. Max. memory is 16.1GB. [2025-03-08 17:40:35,947 INFO L158 Benchmark]: Witness Printer took 74.34ms. Allocated memory is still 637.5MB. Free memory was 302.5MB in the beginning and 294.8MB in the end (delta: 7.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 17:40:35,951 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 201.3MB. Free memory is still 116.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 454.10ms. Allocated memory is still 167.8MB. Free memory was 122.6MB in the beginning and 95.1MB in the end (delta: 27.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.36ms. Allocated memory is still 167.8MB. Free memory was 95.1MB in the beginning and 92.4MB in the end (delta: 2.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.13ms. Allocated memory is still 167.8MB. Free memory was 92.4MB in the beginning and 88.6MB in the end (delta: 3.8MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 876.40ms. Allocated memory is still 167.8MB. Free memory was 88.6MB in the beginning and 53.9MB in the end (delta: 34.7MB). Peak memory consumption was 69.3MB. Max. memory is 16.1GB. * TraceAbstraction took 9975.11ms. Allocated memory was 167.8MB in the beginning and 637.5MB in the end (delta: 469.8MB). Free memory was 53.0MB in the beginning and 302.5MB in the end (delta: -249.5MB). Peak memory consumption was 217.2MB. Max. memory is 16.1GB. * Witness Printer took 74.34ms. Allocated memory is still 637.5MB. Free memory was 302.5MB in the beginning and 294.8MB in the end (delta: 7.8MB). 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, 64 edges, 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: 9.9s, OverallIterations: 8, TraceHistogramMax: 4, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 419 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 406 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3324 IncrementalHoareTripleChecker+Invalid, 3345 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 2 mSDtfsCounter, 3324 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 493 GetRequests, 438 SyntacticMatches, 4 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=232occurred in iteration=6, InterpolantAutomatonStates: 43, 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, 2.2s InterpolantComputationTime, 590 NumberOfCodeBlocks, 574 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 779 ConstructedInterpolants, 0 QuantifiedInterpolants, 2619 SizeOfPredicates, 1 NumberOfNonLiveVariables, 2149 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 17 InterpolantComputations, 4 PerfectInterpolantSequences, 228/512 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! [2025-03-08 17:40:35,967 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE