./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 16:33:04,955 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 16:33:05,033 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 16:33:05,042 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 16:33:05,045 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 16:33:05,073 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 16:33:05,074 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 16:33:05,074 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 16:33:05,074 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 16:33:05,074 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 16:33:05,075 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 16:33:05,075 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 16:33:05,075 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 16:33:05,076 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 16:33:05,076 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 16:33:05,076 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 16:33:05,076 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 16:33:05,077 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 16:33:05,077 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 16:33:05,077 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 16:33:05,077 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 16:33:05,077 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 16:33:05,078 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 16:33:05,078 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 16:33:05,078 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 16:33:05,078 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 16:33:05,078 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 16:33:05,078 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 16:33:05,078 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 16:33:05,078 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 16:33:05,078 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 16:33:05,078 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 16:33:05,079 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:33:05,079 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 16:33:05,079 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 16:33:05,079 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 16:33:05,079 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 16:33:05,080 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:33:05,080 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 16:33:05,080 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 16:33:05,080 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 16:33:05,080 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 16:33:05,080 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 16:33:05,080 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 16:33:05,081 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 16:33:05,081 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 16:33:05,081 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 16:33:05,082 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 16:33:05,082 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a [2025-01-09 16:33:05,396 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 16:33:05,406 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 16:33:05,408 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 16:33:05,409 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 16:33:05,410 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 16:33:05,411 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i [2025-01-09 16:33:06,750 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/929fd11af/7d3b8901603347158579868a84a30c50/FLAG0847a341d [2025-01-09 16:33:07,164 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 16:33:07,165 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i [2025-01-09 16:33:07,197 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/929fd11af/7d3b8901603347158579868a84a30c50/FLAG0847a341d [2025-01-09 16:33:07,214 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/929fd11af/7d3b8901603347158579868a84a30c50 [2025-01-09 16:33:07,217 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 16:33:07,218 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 16:33:07,220 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 16:33:07,220 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 16:33:07,224 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 16:33:07,225 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:33:07" (1/1) ... [2025-01-09 16:33:07,226 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cb80d29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:33:07, skipping insertion in model container [2025-01-09 16:33:07,227 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:33:07" (1/1) ... [2025-01-09 16:33:07,269 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 16:33:07,408 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i[820,833] [2025-01-09 16:33:07,646 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 16:33:07,658 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 16:33:07,667 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i[820,833] [2025-01-09 16:33:07,713 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 16:33:07,794 INFO L204 MainTranslator]: Completed translation [2025-01-09 16:33:07,795 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:33:07 WrapperNode [2025-01-09 16:33:07,796 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 16:33:07,797 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 16:33:07,797 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 16:33:07,797 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 16:33:07,803 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:33:07" (1/1) ... [2025-01-09 16:33:07,814 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:33:07" (1/1) ... [2025-01-09 16:33:07,829 INFO L138 Inliner]: procedures = 364, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 60 [2025-01-09 16:33:07,830 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 16:33:07,830 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 16:33:07,831 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 16:33:07,831 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 16:33:07,838 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:33:07" (1/1) ... [2025-01-09 16:33:07,839 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:33:07" (1/1) ... [2025-01-09 16:33:07,841 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:33:07" (1/1) ... [2025-01-09 16:33:07,853 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2025-01-09 16:33:07,853 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:33:07" (1/1) ... [2025-01-09 16:33:07,853 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:33:07" (1/1) ... [2025-01-09 16:33:07,857 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:33:07" (1/1) ... [2025-01-09 16:33:07,858 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:33:07" (1/1) ... [2025-01-09 16:33:07,860 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:33:07" (1/1) ... [2025-01-09 16:33:07,861 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:33:07" (1/1) ... [2025-01-09 16:33:07,861 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:33:07" (1/1) ... [2025-01-09 16:33:07,863 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 16:33:07,864 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 16:33:07,864 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 16:33:07,864 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 16:33:07,865 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:33:07" (1/1) ... [2025-01-09 16:33:07,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:33:07,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:33:07,898 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 16:33:07,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 16:33:07,921 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-01-09 16:33:07,921 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-01-09 16:33:07,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 16:33:07,921 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2025-01-09 16:33:07,921 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2025-01-09 16:33:07,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 16:33:07,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-09 16:33:07,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 16:33:07,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 16:33:07,923 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-09 16:33:08,048 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 16:33:08,050 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 16:33:08,184 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-09 16:33:08,185 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 16:33:08,281 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 16:33:08,281 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 16:33:08,282 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:33:08 BoogieIcfgContainer [2025-01-09 16:33:08,282 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 16:33:08,288 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 16:33:08,288 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 16:33:08,292 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 16:33:08,292 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 04:33:07" (1/3) ... [2025-01-09 16:33:08,294 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e11afb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:33:08, skipping insertion in model container [2025-01-09 16:33:08,294 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:33:07" (2/3) ... [2025-01-09 16:33:08,295 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e11afb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:33:08, skipping insertion in model container [2025-01-09 16:33:08,295 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:33:08" (3/3) ... [2025-01-09 16:33:08,296 INFO L128 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2025-01-09 16:33:08,309 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 16:33:08,311 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pthread-demo-datarace-1.i that has 2 procedures, 22 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-01-09 16:33:08,311 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-09 16:33:08,352 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-01-09 16:33:08,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 25 places, 24 transitions, 55 flow [2025-01-09 16:33:08,420 INFO L124 PetriNetUnfolderBase]: 3/23 cut-off events. [2025-01-09 16:33:08,422 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-01-09 16:33:08,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 23 events. 3/23 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 31 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 14. Up to 2 conditions per place. [2025-01-09 16:33:08,424 INFO L82 GeneralOperation]: Start removeDead. Operand has 25 places, 24 transitions, 55 flow [2025-01-09 16:33:08,428 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 22 places, 20 transitions, 46 flow [2025-01-09 16:33:08,439 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 16:33:08,453 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;@66acba76, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 16:33:08,454 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-01-09 16:33:08,466 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-09 16:33:08,468 INFO L124 PetriNetUnfolderBase]: 2/19 cut-off events. [2025-01-09 16:33:08,468 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-01-09 16:33:08,468 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:33:08,469 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:33:08,469 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:33:08,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:33:08,473 INFO L85 PathProgramCache]: Analyzing trace with hash 498321794, now seen corresponding path program 1 times [2025-01-09 16:33:08,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:33:08,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615487328] [2025-01-09 16:33:08,480 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:33:08,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:33:08,561 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-09 16:33:08,578 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-09 16:33:08,578 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:33:08,578 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:33:08,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:33:08,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:33:08,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615487328] [2025-01-09 16:33:08,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615487328] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:33:08,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:33:08,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 16:33:08,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830229441] [2025-01-09 16:33:08,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:33:08,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 16:33:08,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:33:08,727 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 16:33:08,727 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 16:33:08,734 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2025-01-09 16:33:08,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 20 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2025-01-09 16:33:08,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:33:08,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2025-01-09 16:33:08,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:33:08,831 INFO L124 PetriNetUnfolderBase]: 61/133 cut-off events. [2025-01-09 16:33:08,832 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-01-09 16:33:08,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 133 events. 61/133 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 393 event pairs, 27 based on Foata normal form. 6/138 useless extension candidates. Maximal degree in co-relation 247. Up to 77 conditions per place. [2025-01-09 16:33:08,836 INFO L140 encePairwiseOnDemand]: 21/24 looper letters, 24 selfloop transitions, 2 changer transitions 0/30 dead transitions. [2025-01-09 16:33:08,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 30 transitions, 118 flow [2025-01-09 16:33:08,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 16:33:08,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-09 16:33:08,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 45 transitions. [2025-01-09 16:33:08,850 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.625 [2025-01-09 16:33:08,852 INFO L175 Difference]: Start difference. First operand has 22 places, 20 transitions, 46 flow. Second operand 3 states and 45 transitions. [2025-01-09 16:33:08,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 30 transitions, 118 flow [2025-01-09 16:33:08,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 30 transitions, 114 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-09 16:33:08,859 INFO L231 Difference]: Finished difference. Result has 23 places, 21 transitions, 54 flow [2025-01-09 16:33:08,861 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=54, PETRI_PLACES=23, PETRI_TRANSITIONS=21} [2025-01-09 16:33:08,864 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 1 predicate places. [2025-01-09 16:33:08,864 INFO L471 AbstractCegarLoop]: Abstraction has has 23 places, 21 transitions, 54 flow [2025-01-09 16:33:08,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2025-01-09 16:33:08,865 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:33:08,865 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:33:08,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 16:33:08,865 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:33:08,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:33:08,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1911755262, now seen corresponding path program 1 times [2025-01-09 16:33:08,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:33:08,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236630118] [2025-01-09 16:33:08,867 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:33:08,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:33:08,885 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-09 16:33:08,897 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 16:33:08,898 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:33:08,898 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:33:08,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 16:33:08,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:33:08,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236630118] [2025-01-09 16:33:08,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236630118] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:33:08,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:33:08,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 16:33:08,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408366216] [2025-01-09 16:33:08,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:33:08,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 16:33:08,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:33:08,972 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 16:33:08,972 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 16:33:08,975 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2025-01-09 16:33:08,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 21 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2025-01-09 16:33:08,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:33:08,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2025-01-09 16:33:08,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:33:09,058 INFO L124 PetriNetUnfolderBase]: 91/207 cut-off events. [2025-01-09 16:33:09,058 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2025-01-09 16:33:09,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 443 conditions, 207 events. 91/207 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 728 event pairs, 46 based on Foata normal form. 9/216 useless extension candidates. Maximal degree in co-relation 144. Up to 113 conditions per place. [2025-01-09 16:33:09,062 INFO L140 encePairwiseOnDemand]: 21/24 looper letters, 24 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2025-01-09 16:33:09,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 31 transitions, 134 flow [2025-01-09 16:33:09,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 16:33:09,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-09 16:33:09,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 46 transitions. [2025-01-09 16:33:09,065 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6388888888888888 [2025-01-09 16:33:09,065 INFO L175 Difference]: Start difference. First operand has 23 places, 21 transitions, 54 flow. Second operand 3 states and 46 transitions. [2025-01-09 16:33:09,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 31 transitions, 134 flow [2025-01-09 16:33:09,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 31 transitions, 130 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-09 16:33:09,067 INFO L231 Difference]: Finished difference. Result has 25 places, 22 transitions, 64 flow [2025-01-09 16:33:09,068 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=25, PETRI_TRANSITIONS=22} [2025-01-09 16:33:09,069 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 3 predicate places. [2025-01-09 16:33:09,069 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 22 transitions, 64 flow [2025-01-09 16:33:09,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2025-01-09 16:33:09,069 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:33:09,069 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] [2025-01-09 16:33:09,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 16:33:09,070 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:33:09,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:33:09,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1567007287, now seen corresponding path program 1 times [2025-01-09 16:33:09,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:33:09,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079355047] [2025-01-09 16:33:09,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:33:09,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:33:09,085 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-09 16:33:09,091 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-09 16:33:09,094 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:33:09,095 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:33:09,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:33:09,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:33:09,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079355047] [2025-01-09 16:33:09,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079355047] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:33:09,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:33:09,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 16:33:09,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946408686] [2025-01-09 16:33:09,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:33:09,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 16:33:09,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:33:09,232 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 16:33:09,232 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 16:33:09,233 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2025-01-09 16:33:09,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 22 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2025-01-09 16:33:09,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:33:09,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2025-01-09 16:33:09,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:33:09,318 INFO L124 PetriNetUnfolderBase]: 59/153 cut-off events. [2025-01-09 16:33:09,318 INFO L125 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2025-01-09 16:33:09,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 373 conditions, 153 events. 59/153 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 463 event pairs, 20 based on Foata normal form. 16/168 useless extension candidates. Maximal degree in co-relation 117. Up to 72 conditions per place. [2025-01-09 16:33:09,320 INFO L140 encePairwiseOnDemand]: 20/24 looper letters, 20 selfloop transitions, 4 changer transitions 0/29 dead transitions. [2025-01-09 16:33:09,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 29 transitions, 142 flow [2025-01-09 16:33:09,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 16:33:09,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-09 16:33:09,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2025-01-09 16:33:09,322 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5972222222222222 [2025-01-09 16:33:09,322 INFO L175 Difference]: Start difference. First operand has 25 places, 22 transitions, 64 flow. Second operand 3 states and 43 transitions. [2025-01-09 16:33:09,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 29 transitions, 142 flow [2025-01-09 16:33:09,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 29 transitions, 138 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-09 16:33:09,324 INFO L231 Difference]: Finished difference. Result has 26 places, 22 transitions, 70 flow [2025-01-09 16:33:09,324 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=26, PETRI_TRANSITIONS=22} [2025-01-09 16:33:09,325 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 4 predicate places. [2025-01-09 16:33:09,326 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 22 transitions, 70 flow [2025-01-09 16:33:09,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2025-01-09 16:33:09,326 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:33:09,326 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] [2025-01-09 16:33:09,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 16:33:09,326 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:33:09,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:33:09,327 INFO L85 PathProgramCache]: Analyzing trace with hash 270763317, now seen corresponding path program 2 times [2025-01-09 16:33:09,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:33:09,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669869223] [2025-01-09 16:33:09,327 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:33:09,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:33:09,345 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 1 equivalence classes. [2025-01-09 16:33:09,358 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-09 16:33:09,359 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-09 16:33:09,359 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:33:09,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:33:09,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:33:09,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669869223] [2025-01-09 16:33:09,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669869223] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:33:09,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:33:09,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 16:33:09,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786076515] [2025-01-09 16:33:09,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:33:09,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 16:33:09,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:33:09,453 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 16:33:09,453 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-09 16:33:09,457 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2025-01-09 16:33:09,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 22 transitions, 70 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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) [2025-01-09 16:33:09,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:33:09,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2025-01-09 16:33:09,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:33:09,559 INFO L124 PetriNetUnfolderBase]: 79/214 cut-off events. [2025-01-09 16:33:09,559 INFO L125 PetriNetUnfolderBase]: For 94/94 co-relation queries the response was YES. [2025-01-09 16:33:09,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 556 conditions, 214 events. 79/214 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 716 event pairs, 20 based on Foata normal form. 9/223 useless extension candidates. Maximal degree in co-relation 183. Up to 89 conditions per place. [2025-01-09 16:33:09,563 INFO L140 encePairwiseOnDemand]: 21/24 looper letters, 33 selfloop transitions, 3 changer transitions 0/41 dead transitions. [2025-01-09 16:33:09,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 41 transitions, 210 flow [2025-01-09 16:33:09,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 16:33:09,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-09 16:33:09,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 62 transitions. [2025-01-09 16:33:09,565 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6458333333333334 [2025-01-09 16:33:09,565 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 70 flow. Second operand 4 states and 62 transitions. [2025-01-09 16:33:09,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 41 transitions, 210 flow [2025-01-09 16:33:09,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 41 transitions, 198 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-09 16:33:09,567 INFO L231 Difference]: Finished difference. Result has 29 places, 23 transitions, 82 flow [2025-01-09 16:33:09,567 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=82, PETRI_PLACES=29, PETRI_TRANSITIONS=23} [2025-01-09 16:33:09,568 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 7 predicate places. [2025-01-09 16:33:09,569 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 23 transitions, 82 flow [2025-01-09 16:33:09,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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) [2025-01-09 16:33:09,569 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:33:09,569 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:33:09,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 16:33:09,570 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:33:09,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:33:09,571 INFO L85 PathProgramCache]: Analyzing trace with hash -57947326, now seen corresponding path program 3 times [2025-01-09 16:33:09,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:33:09,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846461327] [2025-01-09 16:33:09,571 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:33:09,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:33:09,587 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 25 statements into 3 equivalence classes. [2025-01-09 16:33:09,591 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 15 of 25 statements. [2025-01-09 16:33:09,591 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-01-09 16:33:09,591 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:33:09,623 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-01-09 16:33:09,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:33:09,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846461327] [2025-01-09 16:33:09,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846461327] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:33:09,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:33:09,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 16:33:09,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496463900] [2025-01-09 16:33:09,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:33:09,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 16:33:09,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:33:09,625 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 16:33:09,625 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-09 16:33:09,630 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2025-01-09 16:33:09,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 23 transitions, 82 flow. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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) [2025-01-09 16:33:09,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:33:09,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2025-01-09 16:33:09,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:33:09,717 INFO L124 PetriNetUnfolderBase]: 125/328 cut-off events. [2025-01-09 16:33:09,717 INFO L125 PetriNetUnfolderBase]: For 308/308 co-relation queries the response was YES. [2025-01-09 16:33:09,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 896 conditions, 328 events. 125/328 cut-off events. For 308/308 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1299 event pairs, 35 based on Foata normal form. 14/341 useless extension candidates. Maximal degree in co-relation 269. Up to 137 conditions per place. [2025-01-09 16:33:09,723 INFO L140 encePairwiseOnDemand]: 21/24 looper letters, 39 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2025-01-09 16:33:09,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 46 transitions, 266 flow [2025-01-09 16:33:09,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 16:33:09,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-09 16:33:09,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 61 transitions. [2025-01-09 16:33:09,724 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6354166666666666 [2025-01-09 16:33:09,724 INFO L175 Difference]: Start difference. First operand has 29 places, 23 transitions, 82 flow. Second operand 4 states and 61 transitions. [2025-01-09 16:33:09,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 46 transitions, 266 flow [2025-01-09 16:33:09,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 46 transitions, 248 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-01-09 16:33:09,728 INFO L231 Difference]: Finished difference. Result has 31 places, 24 transitions, 92 flow [2025-01-09 16:33:09,728 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=92, PETRI_PLACES=31, PETRI_TRANSITIONS=24} [2025-01-09 16:33:09,731 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 9 predicate places. [2025-01-09 16:33:09,731 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 24 transitions, 92 flow [2025-01-09 16:33:09,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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) [2025-01-09 16:33:09,731 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:33:09,731 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:33:09,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-09 16:33:09,732 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:33:09,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:33:09,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1807425610, now seen corresponding path program 4 times [2025-01-09 16:33:09,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:33:09,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198494947] [2025-01-09 16:33:09,732 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 16:33:09,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:33:09,749 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 30 statements into 2 equivalence classes. [2025-01-09 16:33:09,764 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-01-09 16:33:09,764 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 16:33:09,764 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:33:09,853 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-01-09 16:33:09,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:33:09,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198494947] [2025-01-09 16:33:09,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198494947] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:33:09,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595602215] [2025-01-09 16:33:09,854 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 16:33:09,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:33:09,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:33:09,858 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:33:09,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-09 16:33:09,925 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 30 statements into 2 equivalence classes. [2025-01-09 16:33:09,952 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-01-09 16:33:09,952 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 16:33:09,952 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:33:09,954 INFO L256 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-09 16:33:09,957 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:33:10,021 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-01-09 16:33:10,022 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:33:10,085 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-01-09 16:33:10,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595602215] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:33:10,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:33:10,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2025-01-09 16:33:10,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561203108] [2025-01-09 16:33:10,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:33:10,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-09 16:33:10,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:33:10,087 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-09 16:33:10,087 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2025-01-09 16:33:10,101 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-01-09 16:33:10,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 92 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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) [2025-01-09 16:33:10,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:33:10,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-01-09 16:33:10,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:33:10,302 INFO L124 PetriNetUnfolderBase]: 319/729 cut-off events. [2025-01-09 16:33:10,302 INFO L125 PetriNetUnfolderBase]: For 645/645 co-relation queries the response was YES. [2025-01-09 16:33:10,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2063 conditions, 729 events. 319/729 cut-off events. For 645/645 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2837 event pairs, 35 based on Foata normal form. 56/785 useless extension candidates. Maximal degree in co-relation 775. Up to 132 conditions per place. [2025-01-09 16:33:10,307 INFO L140 encePairwiseOnDemand]: 20/24 looper letters, 85 selfloop transitions, 8 changer transitions 0/96 dead transitions. [2025-01-09 16:33:10,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 96 transitions, 552 flow [2025-01-09 16:33:10,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 16:33:10,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-01-09 16:33:10,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 123 transitions. [2025-01-09 16:33:10,309 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.640625 [2025-01-09 16:33:10,309 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 92 flow. Second operand 8 states and 123 transitions. [2025-01-09 16:33:10,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 96 transitions, 552 flow [2025-01-09 16:33:10,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 96 transitions, 546 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-01-09 16:33:10,314 INFO L231 Difference]: Finished difference. Result has 41 places, 28 transitions, 144 flow [2025-01-09 16:33:10,314 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=144, PETRI_PLACES=41, PETRI_TRANSITIONS=28} [2025-01-09 16:33:10,315 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 19 predicate places. [2025-01-09 16:33:10,315 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 28 transitions, 144 flow [2025-01-09 16:33:10,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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) [2025-01-09 16:33:10,316 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:33:10,316 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:33:10,324 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-09 16:33:10,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:33:10,517 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:33:10,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:33:10,518 INFO L85 PathProgramCache]: Analyzing trace with hash 977370324, now seen corresponding path program 5 times [2025-01-09 16:33:10,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:33:10,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462943226] [2025-01-09 16:33:10,518 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 16:33:10,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:33:10,534 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 50 statements into 6 equivalence classes. [2025-01-09 16:33:10,550 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 50 of 50 statements. [2025-01-09 16:33:10,550 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-01-09 16:33:10,550 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:33:10,695 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 16:33:10,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:33:10,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462943226] [2025-01-09 16:33:10,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462943226] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:33:10,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769233848] [2025-01-09 16:33:10,695 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 16:33:10,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:33:10,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:33:10,698 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:33:10,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-09 16:33:10,765 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 50 statements into 6 equivalence classes. [2025-01-09 16:33:10,803 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 50 of 50 statements. [2025-01-09 16:33:10,804 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-01-09 16:33:10,804 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:33:10,805 INFO L256 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-09 16:33:10,807 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:33:10,901 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 16:33:10,902 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:33:11,073 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 16:33:11,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769233848] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:33:11,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:33:11,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2025-01-09 16:33:11,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472449571] [2025-01-09 16:33:11,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:33:11,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-09 16:33:11,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:33:11,074 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-09 16:33:11,075 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2025-01-09 16:33:11,090 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-01-09 16:33:11,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 28 transitions, 144 flow. Second operand has 16 states, 16 states have (on average 10.0625) internal successors, (161), 16 states have internal predecessors, (161), 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) [2025-01-09 16:33:11,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:33:11,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-01-09 16:33:11,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:33:11,508 INFO L124 PetriNetUnfolderBase]: 687/1551 cut-off events. [2025-01-09 16:33:11,508 INFO L125 PetriNetUnfolderBase]: For 2946/2946 co-relation queries the response was YES. [2025-01-09 16:33:11,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5143 conditions, 1551 events. 687/1551 cut-off events. For 2946/2946 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 6393 event pairs, 20 based on Foata normal form. 112/1663 useless extension candidates. Maximal degree in co-relation 2297. Up to 292 conditions per place. [2025-01-09 16:33:11,520 INFO L140 encePairwiseOnDemand]: 20/24 looper letters, 181 selfloop transitions, 16 changer transitions 0/200 dead transitions. [2025-01-09 16:33:11,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 200 transitions, 1266 flow [2025-01-09 16:33:11,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-09 16:33:11,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-01-09 16:33:11,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 255 transitions. [2025-01-09 16:33:11,522 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6640625 [2025-01-09 16:33:11,522 INFO L175 Difference]: Start difference. First operand has 41 places, 28 transitions, 144 flow. Second operand 16 states and 255 transitions. [2025-01-09 16:33:11,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 200 transitions, 1266 flow [2025-01-09 16:33:11,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 200 transitions, 1214 flow, removed 24 selfloop flow, removed 2 redundant places. [2025-01-09 16:33:11,537 INFO L231 Difference]: Finished difference. Result has 63 places, 37 transitions, 248 flow [2025-01-09 16:33:11,537 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=248, PETRI_PLACES=63, PETRI_TRANSITIONS=37} [2025-01-09 16:33:11,539 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 41 predicate places. [2025-01-09 16:33:11,539 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 37 transitions, 248 flow [2025-01-09 16:33:11,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.0625) internal successors, (161), 16 states have internal predecessors, (161), 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) [2025-01-09 16:33:11,540 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:33:11,540 INFO L206 CegarLoopForPetriNet]: trace histogram [14, 14, 14, 14, 14, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:33:11,549 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-09 16:33:11,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:33:11,741 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:33:11,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:33:11,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1322093322, now seen corresponding path program 6 times [2025-01-09 16:33:11,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:33:11,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306866402] [2025-01-09 16:33:11,742 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 16:33:11,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:33:11,765 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 90 statements into 15 equivalence classes. [2025-01-09 16:33:11,772 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 30 of 90 statements. [2025-01-09 16:33:11,772 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-01-09 16:33:11,772 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:33:11,837 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2025-01-09 16:33:11,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:33:11,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306866402] [2025-01-09 16:33:11,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306866402] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:33:11,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522861676] [2025-01-09 16:33:11,838 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 16:33:11,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:33:11,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:33:11,842 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:33:11,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-09 16:33:11,925 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 90 statements into 15 equivalence classes. [2025-01-09 16:33:11,946 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 30 of 90 statements. [2025-01-09 16:33:11,946 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-01-09 16:33:11,946 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:33:11,947 INFO L256 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-09 16:33:11,949 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:33:12,059 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2025-01-09 16:33:12,059 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:33:12,179 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2025-01-09 16:33:12,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522861676] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:33:12,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:33:12,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2025-01-09 16:33:12,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743569362] [2025-01-09 16:33:12,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:33:12,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-09 16:33:12,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:33:12,180 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-09 16:33:12,180 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2025-01-09 16:33:12,188 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2025-01-09 16:33:12,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 37 transitions, 248 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 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) [2025-01-09 16:33:12,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:33:12,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2025-01-09 16:33:12,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:33:12,607 INFO L124 PetriNetUnfolderBase]: 1213/2834 cut-off events. [2025-01-09 16:33:12,607 INFO L125 PetriNetUnfolderBase]: For 5260/5260 co-relation queries the response was YES. [2025-01-09 16:33:12,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8850 conditions, 2834 events. 1213/2834 cut-off events. For 5260/5260 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 15277 event pairs, 86 based on Foata normal form. 232/3065 useless extension candidates. Maximal degree in co-relation 7862. Up to 495 conditions per place. [2025-01-09 16:33:12,625 INFO L140 encePairwiseOnDemand]: 20/24 looper letters, 155 selfloop transitions, 8 changer transitions 0/169 dead transitions. [2025-01-09 16:33:12,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 169 transitions, 1520 flow [2025-01-09 16:33:12,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 16:33:12,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-01-09 16:33:12,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 124 transitions. [2025-01-09 16:33:12,626 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6458333333333334 [2025-01-09 16:33:12,627 INFO L175 Difference]: Start difference. First operand has 63 places, 37 transitions, 248 flow. Second operand 8 states and 124 transitions. [2025-01-09 16:33:12,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 169 transitions, 1520 flow [2025-01-09 16:33:12,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 169 transitions, 1450 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-01-09 16:33:12,639 INFO L231 Difference]: Finished difference. Result has 70 places, 41 transitions, 296 flow [2025-01-09 16:33:12,640 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=296, PETRI_PLACES=70, PETRI_TRANSITIONS=41} [2025-01-09 16:33:12,640 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 48 predicate places. [2025-01-09 16:33:12,641 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 41 transitions, 296 flow [2025-01-09 16:33:12,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 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) [2025-01-09 16:33:12,641 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:33:12,641 INFO L206 CegarLoopForPetriNet]: trace histogram [14, 14, 14, 14, 14, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:33:12,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-01-09 16:33:12,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:33:12,846 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:33:12,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:33:12,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1645783722, now seen corresponding path program 7 times [2025-01-09 16:33:12,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:33:12,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222913174] [2025-01-09 16:33:12,847 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 16:33:12,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:33:12,866 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 110 statements into 1 equivalence classes. [2025-01-09 16:33:12,879 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 110 of 110 statements. [2025-01-09 16:33:12,880 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:33:12,880 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:33:13,148 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2025-01-09 16:33:13,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:33:13,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222913174] [2025-01-09 16:33:13,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222913174] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:33:13,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630434823] [2025-01-09 16:33:13,149 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 16:33:13,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:33:13,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:33:13,151 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:33:13,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-09 16:33:13,236 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 110 statements into 1 equivalence classes. [2025-01-09 16:33:13,290 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 110 of 110 statements. [2025-01-09 16:33:13,290 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:33:13,290 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:33:13,292 INFO L256 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-09 16:33:13,295 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:33:13,402 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2025-01-09 16:33:13,402 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:33:13,591 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2025-01-09 16:33:13,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630434823] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:33:13,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:33:13,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2025-01-09 16:33:13,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487983841] [2025-01-09 16:33:13,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:33:13,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-09 16:33:13,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:33:13,592 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-09 16:33:13,592 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2025-01-09 16:33:13,603 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2025-01-09 16:33:13,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 41 transitions, 296 flow. Second operand has 17 states, 17 states have (on average 11.176470588235293) internal successors, (190), 17 states have internal predecessors, (190), 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) [2025-01-09 16:33:13,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:33:13,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2025-01-09 16:33:13,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:33:14,591 INFO L124 PetriNetUnfolderBase]: 2601/6156 cut-off events. [2025-01-09 16:33:14,591 INFO L125 PetriNetUnfolderBase]: For 17657/17658 co-relation queries the response was YES. [2025-01-09 16:33:14,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22176 conditions, 6156 events. 2601/6156 cut-off events. For 17657/17658 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 37344 event pairs, 156 based on Foata normal form. 464/6620 useless extension candidates. Maximal degree in co-relation 19751. Up to 1095 conditions per place. [2025-01-09 16:33:14,693 INFO L140 encePairwiseOnDemand]: 20/24 looper letters, 331 selfloop transitions, 16 changer transitions 0/353 dead transitions. [2025-01-09 16:33:14,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 353 transitions, 3146 flow [2025-01-09 16:33:14,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-09 16:33:14,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-01-09 16:33:14,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 256 transitions. [2025-01-09 16:33:14,695 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-01-09 16:33:14,695 INFO L175 Difference]: Start difference. First operand has 70 places, 41 transitions, 296 flow. Second operand 16 states and 256 transitions. [2025-01-09 16:33:14,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 353 transitions, 3146 flow [2025-01-09 16:33:14,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 353 transitions, 3094 flow, removed 24 selfloop flow, removed 2 redundant places. [2025-01-09 16:33:14,722 INFO L231 Difference]: Finished difference. Result has 92 places, 50 transitions, 400 flow [2025-01-09 16:33:14,722 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=400, PETRI_PLACES=92, PETRI_TRANSITIONS=50} [2025-01-09 16:33:14,722 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 70 predicate places. [2025-01-09 16:33:14,723 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 50 transitions, 400 flow [2025-01-09 16:33:14,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 11.176470588235293) internal successors, (190), 17 states have internal predecessors, (190), 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) [2025-01-09 16:33:14,723 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:33:14,723 INFO L206 CegarLoopForPetriNet]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:33:14,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-01-09 16:33:14,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2025-01-09 16:33:14,924 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:33:14,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:33:14,925 INFO L85 PathProgramCache]: Analyzing trace with hash -127257060, now seen corresponding path program 8 times [2025-01-09 16:33:14,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:33:14,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281764178] [2025-01-09 16:33:14,925 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:33:14,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:33:14,952 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 150 statements into 2 equivalence classes. [2025-01-09 16:33:14,978 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 150 of 150 statements. [2025-01-09 16:33:14,979 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:33:14,979 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:33:15,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1041 backedges. 0 proven. 625 refuted. 0 times theorem prover too weak. 416 trivial. 0 not checked. [2025-01-09 16:33:15,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:33:15,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281764178] [2025-01-09 16:33:15,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281764178] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:33:15,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600224232] [2025-01-09 16:33:15,485 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:33:15,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:33:15,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:33:15,488 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:33:15,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-09 16:33:15,581 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 150 statements into 2 equivalence classes. [2025-01-09 16:33:15,659 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 150 of 150 statements. [2025-01-09 16:33:15,659 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:33:15,659 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:33:15,666 INFO L256 TraceCheckSpWp]: Trace formula consists of 638 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-09 16:33:15,672 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:33:16,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1041 backedges. 0 proven. 586 refuted. 0 times theorem prover too weak. 455 trivial. 0 not checked. [2025-01-09 16:33:16,105 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:33:16,594 INFO L134 CoverageAnalysis]: Checked inductivity of 1041 backedges. 0 proven. 586 refuted. 0 times theorem prover too weak. 455 trivial. 0 not checked. [2025-01-09 16:33:16,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600224232] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:33:16,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:33:16,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2025-01-09 16:33:16,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488753707] [2025-01-09 16:33:16,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:33:16,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-01-09 16:33:16,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:33:16,599 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-01-09 16:33:16,599 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=366, Invalid=966, Unknown=0, NotChecked=0, Total=1332 [2025-01-09 16:33:16,633 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-01-09 16:33:16,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 50 transitions, 400 flow. Second operand has 37 states, 37 states have (on average 10.0) internal successors, (370), 37 states have internal predecessors, (370), 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) [2025-01-09 16:33:16,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:33:16,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-01-09 16:33:16,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:33:30,847 INFO L124 PetriNetUnfolderBase]: 4239/9918 cut-off events. [2025-01-09 16:33:30,847 INFO L125 PetriNetUnfolderBase]: For 78434/78434 co-relation queries the response was YES. [2025-01-09 16:33:30,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39011 conditions, 9918 events. 4239/9918 cut-off events. For 78434/78434 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 62425 event pairs, 8 based on Foata normal form. 499/10417 useless extension candidates. Maximal degree in co-relation 29357. Up to 1751 conditions per place. [2025-01-09 16:33:30,936 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 2350 selfloop transitions, 688 changer transitions 0/3043 dead transitions. [2025-01-09 16:33:30,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 3043 transitions, 21274 flow [2025-01-09 16:33:30,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 337 states. [2025-01-09 16:33:30,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2025-01-09 16:33:30,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 4840 transitions. [2025-01-09 16:33:30,953 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5984174085064293 [2025-01-09 16:33:30,953 INFO L175 Difference]: Start difference. First operand has 92 places, 50 transitions, 400 flow. Second operand 337 states and 4840 transitions. [2025-01-09 16:33:30,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 3043 transitions, 21274 flow [2025-01-09 16:33:31,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 3043 transitions, 21114 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-01-09 16:33:31,069 INFO L231 Difference]: Finished difference. Result has 549 places, 729 transitions, 8630 flow [2025-01-09 16:33:31,070 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=337, PETRI_FLOW=8630, PETRI_PLACES=549, PETRI_TRANSITIONS=729} [2025-01-09 16:33:31,070 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 527 predicate places. [2025-01-09 16:33:31,071 INFO L471 AbstractCegarLoop]: Abstraction has has 549 places, 729 transitions, 8630 flow [2025-01-09 16:33:31,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 10.0) internal successors, (370), 37 states have internal predecessors, (370), 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) [2025-01-09 16:33:31,071 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:33:31,071 INFO L206 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:33:31,081 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-09 16:33:31,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-01-09 16:33:31,272 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:33:31,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:33:31,273 INFO L85 PathProgramCache]: Analyzing trace with hash -365627380, now seen corresponding path program 9 times [2025-01-09 16:33:31,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:33:31,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751484656] [2025-01-09 16:33:31,273 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:33:31,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:33:31,304 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 185 statements into 21 equivalence classes. [2025-01-09 16:33:31,385 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) and asserted 160 of 185 statements. [2025-01-09 16:33:31,386 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2025-01-09 16:33:31,386 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:33:31,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1510 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2025-01-09 16:33:31,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:33:31,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751484656] [2025-01-09 16:33:31,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751484656] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:33:31,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640018649] [2025-01-09 16:33:31,881 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:33:31,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:33:31,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:33:31,883 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:33:31,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-01-09 16:33:32,004 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 185 statements into 21 equivalence classes. [2025-01-09 16:33:32,344 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) and asserted 160 of 185 statements. [2025-01-09 16:33:32,344 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2025-01-09 16:33:32,344 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:33:32,347 INFO L256 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-01-09 16:33:32,353 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:33:32,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1510 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2025-01-09 16:33:32,676 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:33:32,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1510 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2025-01-09 16:33:32,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640018649] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:33:32,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:33:32,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 23 [2025-01-09 16:33:32,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443297183] [2025-01-09 16:33:32,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:33:32,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-09 16:33:32,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:33:32,985 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-09 16:33:32,989 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2025-01-09 16:33:33,010 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-01-09 16:33:33,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 549 places, 729 transitions, 8630 flow. Second operand has 23 states, 23 states have (on average 10.217391304347826) internal successors, (235), 23 states have internal predecessors, (235), 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) [2025-01-09 16:33:33,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:33:33,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-01-09 16:33:33,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:33:36,889 INFO L124 PetriNetUnfolderBase]: 5329/12538 cut-off events. [2025-01-09 16:33:36,889 INFO L125 PetriNetUnfolderBase]: For 967780/967780 co-relation queries the response was YES. [2025-01-09 16:33:37,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67259 conditions, 12538 events. 5329/12538 cut-off events. For 967780/967780 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 82571 event pairs, 326 based on Foata normal form. 415/12934 useless extension candidates. Maximal degree in co-relation 62539. Up to 2163 conditions per place. [2025-01-09 16:33:37,072 INFO L140 encePairwiseOnDemand]: 20/24 looper letters, 610 selfloop transitions, 442 changer transitions 0/1073 dead transitions. [2025-01-09 16:33:37,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 570 places, 1073 transitions, 17850 flow [2025-01-09 16:33:37,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-01-09 16:33:37,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-01-09 16:33:37,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 348 transitions. [2025-01-09 16:33:37,073 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6590909090909091 [2025-01-09 16:33:37,073 INFO L175 Difference]: Start difference. First operand has 549 places, 729 transitions, 8630 flow. Second operand 22 states and 348 transitions. [2025-01-09 16:33:37,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 570 places, 1073 transitions, 17850 flow [2025-01-09 16:33:39,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 1073 transitions, 16758 flow, removed 0 selfloop flow, removed 26 redundant places. [2025-01-09 16:33:39,084 INFO L231 Difference]: Finished difference. Result has 550 places, 814 transitions, 9836 flow [2025-01-09 16:33:39,085 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=7668, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=729, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=357, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=9836, PETRI_PLACES=550, PETRI_TRANSITIONS=814} [2025-01-09 16:33:39,085 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 528 predicate places. [2025-01-09 16:33:39,085 INFO L471 AbstractCegarLoop]: Abstraction has has 550 places, 814 transitions, 9836 flow [2025-01-09 16:33:39,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 10.217391304347826) internal successors, (235), 23 states have internal predecessors, (235), 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) [2025-01-09 16:33:39,085 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:33:39,086 INFO L206 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:33:39,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-01-09 16:33:39,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-01-09 16:33:39,286 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:33:39,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:33:39,288 INFO L85 PathProgramCache]: Analyzing trace with hash -968187242, now seen corresponding path program 10 times [2025-01-09 16:33:39,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:33:39,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548230401] [2025-01-09 16:33:39,288 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 16:33:39,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:33:39,315 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 210 statements into 2 equivalence classes. [2025-01-09 16:33:39,380 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 210 of 210 statements. [2025-01-09 16:33:39,380 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 16:33:39,380 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:33:42,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 0 proven. 1940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:33:42,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:33:42,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548230401] [2025-01-09 16:33:42,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548230401] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:33:42,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624666706] [2025-01-09 16:33:42,177 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 16:33:42,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:33:42,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:33:42,179 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:33:42,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-01-09 16:33:42,312 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 210 statements into 2 equivalence classes. [2025-01-09 16:33:42,448 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 210 of 210 statements. [2025-01-09 16:33:42,448 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 16:33:42,448 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:33:42,451 INFO L256 TraceCheckSpWp]: Trace formula consists of 878 conjuncts, 125 conjuncts are in the unsatisfiable core [2025-01-09 16:33:42,456 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:33:42,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 0 proven. 1940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:33:42,772 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:33:43,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 0 proven. 1940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:33:43,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624666706] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:33:43,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:33:43,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 44 [2025-01-09 16:33:43,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542094981] [2025-01-09 16:33:43,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:33:43,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2025-01-09 16:33:43,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:33:43,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2025-01-09 16:33:43,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1892, Unknown=0, NotChecked=0, Total=1980 [2025-01-09 16:33:43,081 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-01-09 16:33:43,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 550 places, 814 transitions, 9836 flow. Second operand has 45 states, 45 states have (on average 8.777777777777779) internal successors, (395), 45 states have internal predecessors, (395), 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) [2025-01-09 16:33:43,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:33:43,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-01-09 16:33:43,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:33:57,289 INFO L124 PetriNetUnfolderBase]: 8452/24038 cut-off events. [2025-01-09 16:33:57,290 INFO L125 PetriNetUnfolderBase]: For 6462912/6462912 co-relation queries the response was YES. [2025-01-09 16:33:58,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230546 conditions, 24038 events. 8452/24038 cut-off events. For 6462912/6462912 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 203335 event pairs, 979 based on Foata normal form. 1/24005 useless extension candidates. Maximal degree in co-relation 204940. Up to 4068 conditions per place. [2025-01-09 16:33:58,435 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 2983 selfloop transitions, 83 changer transitions 2/3093 dead transitions. [2025-01-09 16:33:58,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 593 places, 3093 transitions, 46093 flow [2025-01-09 16:33:58,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2025-01-09 16:33:58,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2025-01-09 16:33:58,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 666 transitions. [2025-01-09 16:33:58,437 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6306818181818182 [2025-01-09 16:33:58,437 INFO L175 Difference]: Start difference. First operand has 550 places, 814 transitions, 9836 flow. Second operand 44 states and 666 transitions. [2025-01-09 16:33:58,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 593 places, 3093 transitions, 46093 flow [2025-01-09 16:34:23,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 578 places, 3093 transitions, 44023 flow, removed 0 selfloop flow, removed 15 redundant places. [2025-01-09 16:34:23,061 INFO L231 Difference]: Finished difference. Result has 580 places, 896 transitions, 9548 flow [2025-01-09 16:34:23,062 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=9206, PETRI_DIFFERENCE_MINUEND_PLACES=535, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=814, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=811, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=9548, PETRI_PLACES=580, PETRI_TRANSITIONS=896} [2025-01-09 16:34:23,062 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 558 predicate places. [2025-01-09 16:34:23,063 INFO L471 AbstractCegarLoop]: Abstraction has has 580 places, 896 transitions, 9548 flow [2025-01-09 16:34:23,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 8.777777777777779) internal successors, (395), 45 states have internal predecessors, (395), 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) [2025-01-09 16:34:23,063 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:34:23,063 INFO L206 CegarLoopForPetriNet]: trace histogram [21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:34:23,074 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-01-09 16:34:23,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:34:23,264 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:34:23,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:34:23,266 INFO L85 PathProgramCache]: Analyzing trace with hash -573486156, now seen corresponding path program 11 times [2025-01-09 16:34:23,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:34:23,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085454644] [2025-01-09 16:34:23,266 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 16:34:23,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:34:23,294 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 215 statements into 21 equivalence classes. [2025-01-09 16:34:23,370 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) and asserted 215 of 215 statements. [2025-01-09 16:34:23,371 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2025-01-09 16:34:23,371 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:34:24,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1882 backedges. 932 proven. 0 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2025-01-09 16:34:24,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:34:24,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085454644] [2025-01-09 16:34:24,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085454644] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:34:24,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:34:24,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2025-01-09 16:34:24,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454822228] [2025-01-09 16:34:24,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:34:24,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-09 16:34:24,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:34:24,011 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-09 16:34:24,011 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2025-01-09 16:34:24,028 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-01-09 16:34:24,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 580 places, 896 transitions, 9548 flow. Second operand has 23 states, 23 states have (on average 10.08695652173913) internal successors, (232), 23 states have internal predecessors, (232), 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) [2025-01-09 16:34:24,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:34:24,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-01-09 16:34:24,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:34:32,700 INFO L124 PetriNetUnfolderBase]: 9407/21644 cut-off events. [2025-01-09 16:34:32,700 INFO L125 PetriNetUnfolderBase]: For 7693020/7693020 co-relation queries the response was YES. [2025-01-09 16:34:33,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231081 conditions, 21644 events. 9407/21644 cut-off events. For 7693020/7693020 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 160118 event pairs, 267 based on Foata normal form. 89/21474 useless extension candidates. Maximal degree in co-relation 230908. Up to 3915 conditions per place. [2025-01-09 16:34:33,217 INFO L140 encePairwiseOnDemand]: 21/24 looper letters, 1957 selfloop transitions, 441 changer transitions 0/2419 dead transitions. [2025-01-09 16:34:33,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 601 places, 2419 transitions, 25876 flow [2025-01-09 16:34:33,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-01-09 16:34:33,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2025-01-09 16:34:33,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 354 transitions. [2025-01-09 16:34:33,219 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6413043478260869 [2025-01-09 16:34:33,219 INFO L175 Difference]: Start difference. First operand has 580 places, 896 transitions, 9548 flow. Second operand 23 states and 354 transitions. [2025-01-09 16:34:33,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 601 places, 2419 transitions, 25876 flow