./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0bf2f5f336333cdf96c271b32cdeb9b70ee932e1c07acf27a63b4425ec902f3e --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 14:03:50,962 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 14:03:51,038 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 14:03:51,043 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 14:03:51,043 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 14:03:51,064 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 14:03:51,064 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 14:03:51,064 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 14:03:51,065 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 14:03:51,065 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 14:03:51,065 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 14:03:51,065 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 14:03:51,065 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 14:03:51,066 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 14:03:51,067 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 14:03:51,068 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 14:03:51,068 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 14:03:51,068 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 14:03:51,068 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 14:03:51,068 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 14:03:51,068 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 14:03:51,068 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 14:03:51,069 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 14:03:51,069 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 14:03:51,069 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 14:03:51,069 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 14:03:51,069 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 14:03:51,069 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 14:03:51,069 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 14:03:51,069 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 14:03:51,070 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 14:03:51,070 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 14:03:51,070 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 14:03:51,070 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 14:03:51,070 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:03:51,070 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 14:03:51,071 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 14:03:51,071 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 14:03:51,071 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 14:03:51,071 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 14:03:51,071 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 14:03:51,071 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 14:03:51,071 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 14:03:51,071 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 14:03:51,071 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 14:03:51,072 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 ! overflow) ) 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 -> 0bf2f5f336333cdf96c271b32cdeb9b70ee932e1c07acf27a63b4425ec902f3e [2025-02-08 14:03:51,336 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 14:03:51,348 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 14:03:51,350 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 14:03:51,352 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 14:03:51,353 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 14:03:51,355 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr.i [2025-02-08 14:03:52,699 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a870a2cd7/cb0f6488cf7d43529ed914506ff52de1/FLAG1292a3e61 [2025-02-08 14:03:53,162 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 14:03:53,163 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr.i [2025-02-08 14:03:53,192 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a870a2cd7/cb0f6488cf7d43529ed914506ff52de1/FLAG1292a3e61 [2025-02-08 14:03:53,267 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a870a2cd7/cb0f6488cf7d43529ed914506ff52de1 [2025-02-08 14:03:53,269 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 14:03:53,271 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 14:03:53,273 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 14:03:53,273 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 14:03:53,277 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 14:03:53,278 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:03:53" (1/1) ... [2025-02-08 14:03:53,279 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5989a0dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:03:53, skipping insertion in model container [2025-02-08 14:03:53,279 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:03:53" (1/1) ... [2025-02-08 14:03:53,330 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 14:03:53,903 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:03:53,936 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 14:03:53,999 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:03:54,092 INFO L204 MainTranslator]: Completed translation [2025-02-08 14:03:54,092 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:03:54 WrapperNode [2025-02-08 14:03:54,092 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 14:03:54,093 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 14:03:54,093 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 14:03:54,093 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 14:03:54,098 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:03:54" (1/1) ... [2025-02-08 14:03:54,119 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:03:54" (1/1) ... [2025-02-08 14:03:54,140 INFO L138 Inliner]: procedures = 525, calls = 30, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 107 [2025-02-08 14:03:54,140 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 14:03:54,141 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 14:03:54,141 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 14:03:54,141 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 14:03:54,148 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:03:54" (1/1) ... [2025-02-08 14:03:54,148 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:03:54" (1/1) ... [2025-02-08 14:03:54,156 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:03:54" (1/1) ... [2025-02-08 14:03:54,173 INFO L175 MemorySlicer]: Split 13 memory accesses to 9 slices as follows [5, 1, 1, 1, 1, 1, 1, 1, 1]. 38 percent of accesses are in the largest equivalence class. The 5 initializations are split as follows [5, 0, 0, 0, 0, 0, 0, 0, 0]. The 8 writes are split as follows [0, 1, 1, 1, 1, 1, 1, 1, 1]. [2025-02-08 14:03:54,174 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:03:54" (1/1) ... [2025-02-08 14:03:54,174 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:03:54" (1/1) ... [2025-02-08 14:03:54,186 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:03:54" (1/1) ... [2025-02-08 14:03:54,187 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:03:54" (1/1) ... [2025-02-08 14:03:54,191 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:03:54" (1/1) ... [2025-02-08 14:03:54,193 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:03:54" (1/1) ... [2025-02-08 14:03:54,202 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 14:03:54,202 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 14:03:54,202 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 14:03:54,202 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 14:03:54,203 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:03:54" (1/1) ... [2025-02-08 14:03:54,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:03:54,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:03:54,239 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 14:03:54,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 14:03:54,262 INFO L130 BoogieDeclarations]: Found specification of procedure counter_thread [2025-02-08 14:03:54,262 INFO L138 BoogieDeclarations]: Found implementation of procedure counter_thread [2025-02-08 14:03:54,262 INFO L130 BoogieDeclarations]: Found specification of procedure monitor_thread [2025-02-08 14:03:54,262 INFO L138 BoogieDeclarations]: Found implementation of procedure monitor_thread [2025-02-08 14:03:54,262 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-02-08 14:03:54,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 14:03:54,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 14:03:54,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 14:03:54,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 14:03:54,262 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2025-02-08 14:03:54,262 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-02-08 14:03:54,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 14:03:54,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 14:03:54,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-08 14:03:54,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-02-08 14:03:54,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-02-08 14:03:54,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-02-08 14:03:54,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-02-08 14:03:54,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2025-02-08 14:03:54,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2025-02-08 14:03:54,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 14:03:54,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 14:03:54,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-08 14:03:54,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-08 14:03:54,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-02-08 14:03:54,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-02-08 14:03:54,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-02-08 14:03:54,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-02-08 14:03:54,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-02-08 14:03:54,265 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 14:03:54,602 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 14:03:54,604 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 14:03:54,970 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 14:03:54,971 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 14:03:55,139 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 14:03:55,139 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 14:03:55,140 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:03:55 BoogieIcfgContainer [2025-02-08 14:03:55,140 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 14:03:55,142 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 14:03:55,142 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 14:03:55,146 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 14:03:55,147 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 02:03:53" (1/3) ... [2025-02-08 14:03:55,147 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@575c89e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:03:55, skipping insertion in model container [2025-02-08 14:03:55,147 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:03:54" (2/3) ... [2025-02-08 14:03:55,148 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@575c89e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:03:55, skipping insertion in model container [2025-02-08 14:03:55,148 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:03:55" (3/3) ... [2025-02-08 14:03:55,149 INFO L128 eAbstractionObserver]: Analyzing ICFG 04-mutex_36-trylock_nr.i [2025-02-08 14:03:55,162 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 14:03:55,164 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 04-mutex_36-trylock_nr.i that has 3 procedures, 81 locations, 1 initial locations, 11 loop locations, and 10 error locations. [2025-02-08 14:03:55,164 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 14:03:55,231 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-08 14:03:55,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 110 transitions, 234 flow [2025-02-08 14:03:55,308 INFO L124 PetriNetUnfolderBase]: 30/108 cut-off events. [2025-02-08 14:03:55,310 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-08 14:03:55,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 108 events. 30/108 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 273 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 85. Up to 5 conditions per place. [2025-02-08 14:03:55,319 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 110 transitions, 234 flow [2025-02-08 14:03:55,324 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 98 transitions, 205 flow [2025-02-08 14:03:55,333 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:03:55,348 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;@52e5bdf0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:03:55,350 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2025-02-08 14:03:55,353 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:03:55,354 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2025-02-08 14:03:55,355 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:03:55,355 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:03:55,356 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-08 14:03:55,356 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-08 14:03:55,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:03:55,361 INFO L85 PathProgramCache]: Analyzing trace with hash 503377, now seen corresponding path program 1 times [2025-02-08 14:03:55,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:03:55,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532533799] [2025-02-08 14:03:55,371 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:03:55,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:03:55,549 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:03:55,562 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:03:55,563 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:03:55,563 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:03:55,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:03:55,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:03:55,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532533799] [2025-02-08 14:03:55,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532533799] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:03:55,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:03:55,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 14:03:55,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714464118] [2025-02-08 14:03:55,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:03:55,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:03:55,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:03:55,773 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:03:55,774 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:03:55,791 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 110 [2025-02-08 14:03:55,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 98 transitions, 205 flow. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:03:55,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:03:55,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 110 [2025-02-08 14:03:55,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:03:56,091 INFO L124 PetriNetUnfolderBase]: 581/1350 cut-off events. [2025-02-08 14:03:56,093 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2025-02-08 14:03:56,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2282 conditions, 1350 events. 581/1350 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 8401 event pairs, 457 based on Foata normal form. 272/1390 useless extension candidates. Maximal degree in co-relation 2191. Up to 890 conditions per place. [2025-02-08 14:03:56,109 INFO L140 encePairwiseOnDemand]: 92/110 looper letters, 32 selfloop transitions, 1 changer transitions 0/67 dead transitions. [2025-02-08 14:03:56,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 67 transitions, 209 flow [2025-02-08 14:03:56,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:03:56,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:03:56,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 191 transitions. [2025-02-08 14:03:56,126 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5787878787878787 [2025-02-08 14:03:56,127 INFO L175 Difference]: Start difference. First operand has 78 places, 98 transitions, 205 flow. Second operand 3 states and 191 transitions. [2025-02-08 14:03:56,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 67 transitions, 209 flow [2025-02-08 14:03:56,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 67 transitions, 204 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:03:56,137 INFO L231 Difference]: Finished difference. Result has 69 places, 67 transitions, 140 flow [2025-02-08 14:03:56,140 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=69, PETRI_TRANSITIONS=67} [2025-02-08 14:03:56,144 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, -9 predicate places. [2025-02-08 14:03:56,145 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 67 transitions, 140 flow [2025-02-08 14:03:56,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:03:56,145 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:03:56,146 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2025-02-08 14:03:56,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 14:03:56,146 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-08 14:03:56,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:03:56,147 INFO L85 PathProgramCache]: Analyzing trace with hash 15605067, now seen corresponding path program 1 times [2025-02-08 14:03:56,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:03:56,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645400849] [2025-02-08 14:03:56,147 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:03:56,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:03:56,216 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-08 14:03:56,222 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-08 14:03:56,223 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:03:56,223 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:03:56,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:03:56,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:03:56,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645400849] [2025-02-08 14:03:56,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645400849] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:03:56,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:03:56,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:03:56,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684237909] [2025-02-08 14:03:56,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:03:56,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:03:56,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:03:56,298 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:03:56,298 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:03:56,304 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 110 [2025-02-08 14:03:56,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 67 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:03:56,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:03:56,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 110 [2025-02-08 14:03:56,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:03:56,451 INFO L124 PetriNetUnfolderBase]: 581/1349 cut-off events. [2025-02-08 14:03:56,451 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2025-02-08 14:03:56,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2268 conditions, 1349 events. 581/1349 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 8380 event pairs, 457 based on Foata normal form. 0/1118 useless extension candidates. Maximal degree in co-relation 2262. Up to 889 conditions per place. [2025-02-08 14:03:56,462 INFO L140 encePairwiseOnDemand]: 108/110 looper letters, 32 selfloop transitions, 1 changer transitions 0/66 dead transitions. [2025-02-08 14:03:56,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 66 transitions, 204 flow [2025-02-08 14:03:56,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:03:56,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:03:56,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 172 transitions. [2025-02-08 14:03:56,465 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5212121212121212 [2025-02-08 14:03:56,465 INFO L175 Difference]: Start difference. First operand has 69 places, 67 transitions, 140 flow. Second operand 3 states and 172 transitions. [2025-02-08 14:03:56,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 66 transitions, 204 flow [2025-02-08 14:03:56,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 66 transitions, 203 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:03:56,467 INFO L231 Difference]: Finished difference. Result has 69 places, 66 transitions, 139 flow [2025-02-08 14:03:56,468 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=69, PETRI_TRANSITIONS=66} [2025-02-08 14:03:56,468 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, -9 predicate places. [2025-02-08 14:03:56,468 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 66 transitions, 139 flow [2025-02-08 14:03:56,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:03:56,469 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:03:56,469 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:03:56,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 14:03:56,469 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting counter_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-08 14:03:56,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:03:56,470 INFO L85 PathProgramCache]: Analyzing trace with hash 601971760, now seen corresponding path program 1 times [2025-02-08 14:03:56,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:03:56,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149467409] [2025-02-08 14:03:56,470 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:03:56,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:03:56,489 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 14:03:56,501 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 14:03:56,502 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:03:56,502 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:03:56,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:03:56,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:03:56,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149467409] [2025-02-08 14:03:56,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149467409] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:03:56,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:03:56,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:03:56,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125456275] [2025-02-08 14:03:56,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:03:56,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:03:56,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:03:56,708 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:03:56,709 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:03:56,724 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 110 [2025-02-08 14:03:56,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 66 transitions, 139 flow. Second operand has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 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) [2025-02-08 14:03:56,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:03:56,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 110 [2025-02-08 14:03:56,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:03:57,214 INFO L124 PetriNetUnfolderBase]: 1611/3603 cut-off events. [2025-02-08 14:03:57,214 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2025-02-08 14:03:57,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6234 conditions, 3603 events. 1611/3603 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 24999 event pairs, 393 based on Foata normal form. 48/3086 useless extension candidates. Maximal degree in co-relation 6228. Up to 1048 conditions per place. [2025-02-08 14:03:57,238 INFO L140 encePairwiseOnDemand]: 103/110 looper letters, 104 selfloop transitions, 4 changer transitions 0/138 dead transitions. [2025-02-08 14:03:57,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 138 transitions, 507 flow [2025-02-08 14:03:57,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:03:57,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:03:57,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 339 transitions. [2025-02-08 14:03:57,243 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6163636363636363 [2025-02-08 14:03:57,243 INFO L175 Difference]: Start difference. First operand has 69 places, 66 transitions, 139 flow. Second operand 5 states and 339 transitions. [2025-02-08 14:03:57,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 138 transitions, 507 flow [2025-02-08 14:03:57,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 138 transitions, 506 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:03:57,247 INFO L231 Difference]: Finished difference. Result has 74 places, 69 transitions, 172 flow [2025-02-08 14:03:57,248 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=172, PETRI_PLACES=74, PETRI_TRANSITIONS=69} [2025-02-08 14:03:57,249 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, -4 predicate places. [2025-02-08 14:03:57,249 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 69 transitions, 172 flow [2025-02-08 14:03:57,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 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) [2025-02-08 14:03:57,250 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:03:57,250 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:03:57,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 14:03:57,250 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-08 14:03:57,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:03:57,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1421989496, now seen corresponding path program 1 times [2025-02-08 14:03:57,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:03:57,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574349328] [2025-02-08 14:03:57,251 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:03:57,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:03:57,276 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 14:03:57,283 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 14:03:57,284 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:03:57,284 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:03:57,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:03:57,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:03:57,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574349328] [2025-02-08 14:03:57,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574349328] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:03:57,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:03:57,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:03:57,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850840724] [2025-02-08 14:03:57,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:03:57,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:03:57,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:03:57,380 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:03:57,380 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:03:57,385 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 110 [2025-02-08 14:03:57,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 69 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:03:57,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:03:57,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 110 [2025-02-08 14:03:57,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:03:58,176 INFO L124 PetriNetUnfolderBase]: 3832/8241 cut-off events. [2025-02-08 14:03:58,176 INFO L125 PetriNetUnfolderBase]: For 882/996 co-relation queries the response was YES. [2025-02-08 14:03:58,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15468 conditions, 8241 events. 3832/8241 cut-off events. For 882/996 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 63816 event pairs, 1401 based on Foata normal form. 67/7237 useless extension candidates. Maximal degree in co-relation 15459. Up to 2524 conditions per place. [2025-02-08 14:03:58,261 INFO L140 encePairwiseOnDemand]: 105/110 looper letters, 105 selfloop transitions, 4 changer transitions 0/141 dead transitions. [2025-02-08 14:03:58,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 141 transitions, 576 flow [2025-02-08 14:03:58,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:03:58,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:03:58,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 334 transitions. [2025-02-08 14:03:58,264 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6072727272727273 [2025-02-08 14:03:58,264 INFO L175 Difference]: Start difference. First operand has 74 places, 69 transitions, 172 flow. Second operand 5 states and 334 transitions. [2025-02-08 14:03:58,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 141 transitions, 576 flow [2025-02-08 14:03:58,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 141 transitions, 576 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 14:03:58,271 INFO L231 Difference]: Finished difference. Result has 79 places, 72 transitions, 196 flow [2025-02-08 14:03:58,271 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=196, PETRI_PLACES=79, PETRI_TRANSITIONS=72} [2025-02-08 14:03:58,272 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 1 predicate places. [2025-02-08 14:03:58,272 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 72 transitions, 196 flow [2025-02-08 14:03:58,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:03:58,272 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:03:58,272 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:03:58,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 14:03:58,273 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting counter_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-08 14:03:58,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:03:58,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1325706701, now seen corresponding path program 1 times [2025-02-08 14:03:58,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:03:58,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701803144] [2025-02-08 14:03:58,273 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:03:58,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:03:58,295 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 14:03:58,300 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 14:03:58,302 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:03:58,302 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:03:58,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:03:58,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:03:58,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701803144] [2025-02-08 14:03:58,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701803144] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:03:58,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:03:58,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:03:58,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186116203] [2025-02-08 14:03:58,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:03:58,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:03:58,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:03:58,401 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:03:58,401 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:03:58,414 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 110 [2025-02-08 14:03:58,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 72 transitions, 196 flow. Second operand has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:03:58,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:03:58,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 110 [2025-02-08 14:03:58,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:03:59,421 INFO L124 PetriNetUnfolderBase]: 4603/9901 cut-off events. [2025-02-08 14:03:59,422 INFO L125 PetriNetUnfolderBase]: For 1174/1302 co-relation queries the response was YES. [2025-02-08 14:03:59,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19351 conditions, 9901 events. 4603/9901 cut-off events. For 1174/1302 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 78809 event pairs, 3356 based on Foata normal form. 373/9075 useless extension candidates. Maximal degree in co-relation 19340. Up to 5931 conditions per place. [2025-02-08 14:03:59,471 INFO L140 encePairwiseOnDemand]: 104/110 looper letters, 80 selfloop transitions, 4 changer transitions 0/114 dead transitions. [2025-02-08 14:03:59,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 114 transitions, 486 flow [2025-02-08 14:03:59,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:03:59,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:03:59,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 254 transitions. [2025-02-08 14:03:59,473 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5772727272727273 [2025-02-08 14:03:59,473 INFO L175 Difference]: Start difference. First operand has 79 places, 72 transitions, 196 flow. Second operand 4 states and 254 transitions. [2025-02-08 14:03:59,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 114 transitions, 486 flow [2025-02-08 14:03:59,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 114 transitions, 486 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 14:03:59,478 INFO L231 Difference]: Finished difference. Result has 84 places, 74 transitions, 226 flow [2025-02-08 14:03:59,478 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=226, PETRI_PLACES=84, PETRI_TRANSITIONS=74} [2025-02-08 14:03:59,481 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 6 predicate places. [2025-02-08 14:03:59,481 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 74 transitions, 226 flow [2025-02-08 14:03:59,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:03:59,481 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:03:59,481 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:03:59,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 14:03:59,482 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting counter_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-08 14:03:59,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:03:59,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1903510008, now seen corresponding path program 1 times [2025-02-08 14:03:59,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:03:59,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595283744] [2025-02-08 14:03:59,483 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:03:59,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:03:59,497 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-08 14:03:59,505 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 14:03:59,506 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:03:59,506 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:03:59,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:03:59,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:03:59,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595283744] [2025-02-08 14:03:59,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595283744] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:03:59,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023937742] [2025-02-08 14:03:59,612 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:03:59,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:03:59,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:03:59,615 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:03:59,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-08 14:03:59,729 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-08 14:03:59,743 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 14:03:59,743 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:03:59,743 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:03:59,746 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:03:59,749 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:03:59,827 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:03:59,828 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:03:59,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023937742] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:03:59,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:03:59,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-08 14:03:59,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832295484] [2025-02-08 14:03:59,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:03:59,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:03:59,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:03:59,830 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:03:59,830 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-08 14:03:59,852 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 110 [2025-02-08 14:03:59,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 74 transitions, 226 flow. Second operand has 6 states, 6 states have (on average 47.166666666666664) internal successors, (283), 6 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:03:59,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:03:59,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 110 [2025-02-08 14:03:59,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:04:00,780 INFO L124 PetriNetUnfolderBase]: 4000/8866 cut-off events. [2025-02-08 14:04:00,781 INFO L125 PetriNetUnfolderBase]: For 3340/3472 co-relation queries the response was YES. [2025-02-08 14:04:00,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18408 conditions, 8866 events. 4000/8866 cut-off events. For 3340/3472 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 70577 event pairs, 821 based on Foata normal form. 330/8264 useless extension candidates. Maximal degree in co-relation 18394. Up to 3087 conditions per place. [2025-02-08 14:04:00,841 INFO L140 encePairwiseOnDemand]: 105/110 looper letters, 113 selfloop transitions, 4 changer transitions 0/147 dead transitions. [2025-02-08 14:04:00,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 147 transitions, 657 flow [2025-02-08 14:04:00,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:04:00,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:04:00,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 376 transitions. [2025-02-08 14:04:00,844 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5696969696969697 [2025-02-08 14:04:00,845 INFO L175 Difference]: Start difference. First operand has 84 places, 74 transitions, 226 flow. Second operand 6 states and 376 transitions. [2025-02-08 14:04:00,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 147 transitions, 657 flow [2025-02-08 14:04:00,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 147 transitions, 654 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:04:00,861 INFO L231 Difference]: Finished difference. Result has 86 places, 72 transitions, 222 flow [2025-02-08 14:04:00,862 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=222, PETRI_PLACES=86, PETRI_TRANSITIONS=72} [2025-02-08 14:04:00,863 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 8 predicate places. [2025-02-08 14:04:00,864 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 72 transitions, 222 flow [2025-02-08 14:04:00,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 47.166666666666664) internal successors, (283), 6 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:04:00,864 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:04:00,864 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:04:00,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-08 14:04:01,066 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 [2025-02-08 14:04:01,067 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting counter_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-08 14:04:01,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:04:01,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1120732422, now seen corresponding path program 1 times [2025-02-08 14:04:01,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:04:01,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024967529] [2025-02-08 14:04:01,068 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:04:01,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:04:01,087 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 14:04:01,094 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 14:04:01,094 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:04:01,094 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:04:01,222 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:04:01,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:04:01,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024967529] [2025-02-08 14:04:01,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024967529] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:04:01,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33053957] [2025-02-08 14:04:01,223 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:04:01,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:04:01,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:04:01,225 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:04:01,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-08 14:04:01,324 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 14:04:01,339 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 14:04:01,340 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:04:01,340 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:04:01,341 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:04:01,342 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:04:01,402 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:04:01,403 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:04:01,486 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:04:01,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33053957] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:04:01,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:04:01,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-02-08 14:04:01,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261128868] [2025-02-08 14:04:01,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:04:01,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 14:04:01,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:04:01,488 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 14:04:01,488 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-08 14:04:01,519 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 110 [2025-02-08 14:04:01,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 72 transitions, 222 flow. Second operand has 12 states, 12 states have (on average 48.0) internal successors, (576), 12 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:04:01,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:04:01,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 110 [2025-02-08 14:04:01,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:04:03,166 INFO L124 PetriNetUnfolderBase]: 6961/15817 cut-off events. [2025-02-08 14:04:03,166 INFO L125 PetriNetUnfolderBase]: For 7076/7324 co-relation queries the response was YES. [2025-02-08 14:04:03,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32815 conditions, 15817 events. 6961/15817 cut-off events. For 7076/7324 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 138426 event pairs, 821 based on Foata normal form. 663/14915 useless extension candidates. Maximal degree in co-relation 32800. Up to 2331 conditions per place. [2025-02-08 14:04:03,245 INFO L140 encePairwiseOnDemand]: 105/110 looper letters, 246 selfloop transitions, 15 changer transitions 0/291 dead transitions. [2025-02-08 14:04:03,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 291 transitions, 1378 flow [2025-02-08 14:04:03,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-08 14:04:03,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-08 14:04:03,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 728 transitions. [2025-02-08 14:04:03,250 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6016528925619835 [2025-02-08 14:04:03,251 INFO L175 Difference]: Start difference. First operand has 86 places, 72 transitions, 222 flow. Second operand 11 states and 728 transitions. [2025-02-08 14:04:03,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 291 transitions, 1378 flow [2025-02-08 14:04:03,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 291 transitions, 1371 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-08 14:04:03,265 INFO L231 Difference]: Finished difference. Result has 98 places, 80 transitions, 330 flow [2025-02-08 14:04:03,265 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=330, PETRI_PLACES=98, PETRI_TRANSITIONS=80} [2025-02-08 14:04:03,266 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 20 predicate places. [2025-02-08 14:04:03,267 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 80 transitions, 330 flow [2025-02-08 14:04:03,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 48.0) internal successors, (576), 12 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:04:03,267 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:04:03,267 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:04:03,276 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-08 14:04:03,468 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 [2025-02-08 14:04:03,468 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting counter_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-08 14:04:03,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:04:03,468 INFO L85 PathProgramCache]: Analyzing trace with hash 382967307, now seen corresponding path program 1 times [2025-02-08 14:04:03,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:04:03,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354594977] [2025-02-08 14:04:03,469 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:04:03,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:04:03,486 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-08 14:04:03,495 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-08 14:04:03,496 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:04:03,496 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:04:03,577 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:04:03,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:04:03,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354594977] [2025-02-08 14:04:03,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354594977] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:04:03,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703940069] [2025-02-08 14:04:03,578 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:04:03,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:04:03,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:04:03,580 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:04:03,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-08 14:04:03,658 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-08 14:04:03,673 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-08 14:04:03,673 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:04:03,673 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:04:03,674 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:04:03,675 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:04:03,711 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:04:03,711 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:04:03,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703940069] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:04:03,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:04:03,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-02-08 14:04:03,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237269870] [2025-02-08 14:04:03,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:04:03,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:04:03,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:04:03,712 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:04:03,712 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-08 14:04:03,723 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 110 [2025-02-08 14:04:03,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 80 transitions, 330 flow. Second operand has 6 states, 6 states have (on average 47.5) internal successors, (285), 6 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:04:03,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:04:03,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 110 [2025-02-08 14:04:03,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:04:04,986 INFO L124 PetriNetUnfolderBase]: 7861/16464 cut-off events. [2025-02-08 14:04:04,987 INFO L125 PetriNetUnfolderBase]: For 11748/12088 co-relation queries the response was YES. [2025-02-08 14:04:05,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37338 conditions, 16464 events. 7861/16464 cut-off events. For 11748/12088 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 135515 event pairs, 776 based on Foata normal form. 219/14852 useless extension candidates. Maximal degree in co-relation 37317. Up to 7995 conditions per place. [2025-02-08 14:04:05,085 INFO L140 encePairwiseOnDemand]: 106/110 looper letters, 126 selfloop transitions, 13 changer transitions 0/167 dead transitions. [2025-02-08 14:04:05,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 167 transitions, 870 flow [2025-02-08 14:04:05,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:04:05,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:04:05,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 381 transitions. [2025-02-08 14:04:05,088 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5772727272727273 [2025-02-08 14:04:05,088 INFO L175 Difference]: Start difference. First operand has 98 places, 80 transitions, 330 flow. Second operand 6 states and 381 transitions. [2025-02-08 14:04:05,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 167 transitions, 870 flow [2025-02-08 14:04:05,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 167 transitions, 836 flow, removed 12 selfloop flow, removed 4 redundant places. [2025-02-08 14:04:05,129 INFO L231 Difference]: Finished difference. Result has 98 places, 80 transitions, 330 flow [2025-02-08 14:04:05,129 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=330, PETRI_PLACES=98, PETRI_TRANSITIONS=80} [2025-02-08 14:04:05,130 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 20 predicate places. [2025-02-08 14:04:05,130 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 80 transitions, 330 flow [2025-02-08 14:04:05,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 47.5) internal successors, (285), 6 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:04:05,130 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:04:05,130 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:04:05,139 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-08 14:04:05,335 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 [2025-02-08 14:04:05,335 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting counter_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-08 14:04:05,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:04:05,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1012914836, now seen corresponding path program 1 times [2025-02-08 14:04:05,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:04:05,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330131700] [2025-02-08 14:04:05,336 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:04:05,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:04:05,351 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-08 14:04:05,355 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-08 14:04:05,355 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:04:05,355 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:04:05,403 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:04:05,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:04:05,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330131700] [2025-02-08 14:04:05,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330131700] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:04:05,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:04:05,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:04:05,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361693682] [2025-02-08 14:04:05,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:04:05,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:04:05,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:04:05,405 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:04:05,406 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:04:05,413 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 110 [2025-02-08 14:04:05,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 80 transitions, 330 flow. Second operand has 4 states, 4 states have (on average 48.75) internal successors, (195), 4 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:04:05,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:04:05,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 110 [2025-02-08 14:04:05,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:04:06,759 INFO L124 PetriNetUnfolderBase]: 7681/16223 cut-off events. [2025-02-08 14:04:06,759 INFO L125 PetriNetUnfolderBase]: For 13502/13750 co-relation queries the response was YES. [2025-02-08 14:04:06,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36769 conditions, 16223 events. 7681/16223 cut-off events. For 13502/13750 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 136297 event pairs, 4904 based on Foata normal form. 237/14784 useless extension candidates. Maximal degree in co-relation 36749. Up to 8680 conditions per place. [2025-02-08 14:04:06,820 INFO L140 encePairwiseOnDemand]: 105/110 looper letters, 76 selfloop transitions, 17 changer transitions 0/121 dead transitions. [2025-02-08 14:04:06,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 121 transitions, 643 flow [2025-02-08 14:04:06,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:04:06,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:04:06,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 248 transitions. [2025-02-08 14:04:06,821 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5636363636363636 [2025-02-08 14:04:06,821 INFO L175 Difference]: Start difference. First operand has 98 places, 80 transitions, 330 flow. Second operand 4 states and 248 transitions. [2025-02-08 14:04:06,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 121 transitions, 643 flow [2025-02-08 14:04:06,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 121 transitions, 622 flow, removed 1 selfloop flow, removed 3 redundant places. [2025-02-08 14:04:06,857 INFO L231 Difference]: Finished difference. Result has 98 places, 83 transitions, 378 flow [2025-02-08 14:04:06,857 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=378, PETRI_PLACES=98, PETRI_TRANSITIONS=83} [2025-02-08 14:04:06,857 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 20 predicate places. [2025-02-08 14:04:06,858 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 83 transitions, 378 flow [2025-02-08 14:04:06,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.75) internal successors, (195), 4 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:04:06,858 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:04:06,858 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:04:06,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-08 14:04:06,858 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-08 14:04:06,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:04:06,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1467945478, now seen corresponding path program 1 times [2025-02-08 14:04:06,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:04:06,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721536216] [2025-02-08 14:04:06,859 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:04:06,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:04:06,871 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-08 14:04:06,875 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-08 14:04:06,875 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:04:06,875 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:04:06,971 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:04:06,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:04:06,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721536216] [2025-02-08 14:04:06,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721536216] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:04:06,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219275754] [2025-02-08 14:04:06,972 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:04:06,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:04:06,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:04:06,975 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:04:06,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-08 14:04:07,061 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-08 14:04:07,074 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-08 14:04:07,075 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:04:07,075 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:04:07,076 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:04:07,077 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:04:07,114 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:04:07,115 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:04:07,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219275754] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:04:07,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:04:07,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-02-08 14:04:07,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084626846] [2025-02-08 14:04:07,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:04:07,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:04:07,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:04:07,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:04:07,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-08 14:04:07,122 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 110 [2025-02-08 14:04:07,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 83 transitions, 378 flow. Second operand has 6 states, 6 states have (on average 50.166666666666664) internal successors, (301), 6 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:04:07,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:04:07,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 110 [2025-02-08 14:04:07,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:04:08,181 INFO L124 PetriNetUnfolderBase]: 7154/14551 cut-off events. [2025-02-08 14:04:08,181 INFO L125 PetriNetUnfolderBase]: For 17435/17879 co-relation queries the response was YES. [2025-02-08 14:04:08,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34188 conditions, 14551 events. 7154/14551 cut-off events. For 17435/17879 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 117702 event pairs, 293 based on Foata normal form. 373/13190 useless extension candidates. Maximal degree in co-relation 34168. Up to 3945 conditions per place. [2025-02-08 14:04:08,249 INFO L140 encePairwiseOnDemand]: 106/110 looper letters, 191 selfloop transitions, 4 changer transitions 0/224 dead transitions. [2025-02-08 14:04:08,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 224 transitions, 1640 flow [2025-02-08 14:04:08,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:04:08,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:04:08,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 393 transitions. [2025-02-08 14:04:08,251 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5954545454545455 [2025-02-08 14:04:08,251 INFO L175 Difference]: Start difference. First operand has 98 places, 83 transitions, 378 flow. Second operand 6 states and 393 transitions. [2025-02-08 14:04:08,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 224 transitions, 1640 flow [2025-02-08 14:04:08,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 224 transitions, 1518 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 14:04:08,267 INFO L231 Difference]: Finished difference. Result has 100 places, 82 transitions, 356 flow [2025-02-08 14:04:08,267 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=356, PETRI_PLACES=100, PETRI_TRANSITIONS=82} [2025-02-08 14:04:08,268 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 22 predicate places. [2025-02-08 14:04:08,268 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 82 transitions, 356 flow [2025-02-08 14:04:08,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 50.166666666666664) internal successors, (301), 6 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:04:08,268 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:04:08,268 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:04:08,276 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-08 14:04:08,473 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,SelfDestructingSolverStorable9 [2025-02-08 14:04:08,473 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-08 14:04:08,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:04:08,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1738330927, now seen corresponding path program 1 times [2025-02-08 14:04:08,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:04:08,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36051506] [2025-02-08 14:04:08,474 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:04:08,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:04:08,484 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-08 14:04:08,488 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 14:04:08,488 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:04:08,489 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:04:08,564 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:04:08,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:04:08,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36051506] [2025-02-08 14:04:08,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36051506] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:04:08,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061489216] [2025-02-08 14:04:08,565 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:04:08,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:04:08,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:04:08,567 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:04:08,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-08 14:04:08,648 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-08 14:04:08,660 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 14:04:08,660 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:04:08,661 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:04:08,661 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:04:08,662 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:04:08,700 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:04:08,701 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:04:08,751 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:04:08,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061489216] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:04:08,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:04:08,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-02-08 14:04:08,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679811263] [2025-02-08 14:04:08,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:04:08,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 14:04:08,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:04:08,756 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 14:04:08,756 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-08 14:04:08,772 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 110 [2025-02-08 14:04:08,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 82 transitions, 356 flow. Second operand has 12 states, 12 states have (on average 50.25) internal successors, (603), 12 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:04:08,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:04:08,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 110 [2025-02-08 14:04:08,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:04:10,652 INFO L124 PetriNetUnfolderBase]: 11859/24084 cut-off events. [2025-02-08 14:04:10,653 INFO L125 PetriNetUnfolderBase]: For 22792/23536 co-relation queries the response was YES. [2025-02-08 14:04:10,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55361 conditions, 24084 events. 11859/24084 cut-off events. For 22792/23536 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 205477 event pairs, 622 based on Foata normal form. 416/21772 useless extension candidates. Maximal degree in co-relation 55340. Up to 3420 conditions per place. [2025-02-08 14:04:10,792 INFO L140 encePairwiseOnDemand]: 106/110 looper letters, 362 selfloop transitions, 11 changer transitions 0/402 dead transitions. [2025-02-08 14:04:10,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 402 transitions, 2868 flow [2025-02-08 14:04:10,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-08 14:04:10,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-08 14:04:10,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 723 transitions. [2025-02-08 14:04:10,795 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5975206611570248 [2025-02-08 14:04:10,795 INFO L175 Difference]: Start difference. First operand has 100 places, 82 transitions, 356 flow. Second operand 11 states and 723 transitions. [2025-02-08 14:04:10,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 402 transitions, 2868 flow [2025-02-08 14:04:10,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 402 transitions, 2861 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-08 14:04:10,824 INFO L231 Difference]: Finished difference. Result has 109 places, 87 transitions, 403 flow [2025-02-08 14:04:10,825 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=403, PETRI_PLACES=109, PETRI_TRANSITIONS=87} [2025-02-08 14:04:10,825 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 31 predicate places. [2025-02-08 14:04:10,825 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 87 transitions, 403 flow [2025-02-08 14:04:10,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.25) internal successors, (603), 12 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:04:10,826 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:04:10,826 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:04:10,834 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-08 14:04:11,026 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,SelfDestructingSolverStorable10 [2025-02-08 14:04:11,027 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting counter_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-08 14:04:11,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:04:11,027 INFO L85 PathProgramCache]: Analyzing trace with hash -573973026, now seen corresponding path program 2 times [2025-02-08 14:04:11,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:04:11,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045019066] [2025-02-08 14:04:11,028 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:04:11,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:04:11,043 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 35 statements into 2 equivalence classes. [2025-02-08 14:04:11,053 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-02-08 14:04:11,054 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 14:04:11,054 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:04:11,359 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:04:11,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:04:11,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045019066] [2025-02-08 14:04:11,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045019066] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:04:11,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357618957] [2025-02-08 14:04:11,360 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:04:11,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:04:11,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:04:11,362 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) [2025-02-08 14:04:11,364 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 [2025-02-08 14:04:11,448 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 35 statements into 2 equivalence classes. [2025-02-08 14:04:11,468 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-02-08 14:04:11,468 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 14:04:11,468 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:04:11,470 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-08 14:04:11,471 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:04:11,543 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:04:11,543 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:04:11,731 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:04:11,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357618957] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:04:11,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:04:11,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2025-02-08 14:04:11,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82985273] [2025-02-08 14:04:11,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:04:11,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-08 14:04:11,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:04:11,734 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-08 14:04:11,735 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2025-02-08 14:04:11,776 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 110 [2025-02-08 14:04:11,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 87 transitions, 403 flow. Second operand has 24 states, 24 states have (on average 47.25) internal successors, (1134), 24 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:04:11,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:04:11,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 110 [2025-02-08 14:04:11,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:04:17,305 INFO L124 PetriNetUnfolderBase]: 26032/57971 cut-off events. [2025-02-08 14:04:17,305 INFO L125 PetriNetUnfolderBase]: For 94026/94320 co-relation queries the response was YES. [2025-02-08 14:04:17,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134684 conditions, 57971 events. 26032/57971 cut-off events. For 94026/94320 co-relation queries the response was YES. Maximal size of possible extension queue 734. Compared 573560 event pairs, 1388 based on Foata normal form. 2210/54374 useless extension candidates. Maximal degree in co-relation 134660. Up to 7915 conditions per place. [2025-02-08 14:04:17,700 INFO L140 encePairwiseOnDemand]: 105/110 looper letters, 650 selfloop transitions, 43 changer transitions 0/721 dead transitions. [2025-02-08 14:04:17,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 721 transitions, 4444 flow [2025-02-08 14:04:17,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-02-08 14:04:17,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2025-02-08 14:04:17,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1541 transitions. [2025-02-08 14:04:17,706 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6090909090909091 [2025-02-08 14:04:17,706 INFO L175 Difference]: Start difference. First operand has 109 places, 87 transitions, 403 flow. Second operand 23 states and 1541 transitions. [2025-02-08 14:04:17,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 721 transitions, 4444 flow [2025-02-08 14:04:17,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 721 transitions, 4004 flow, removed 132 selfloop flow, removed 4 redundant places. [2025-02-08 14:04:17,786 INFO L231 Difference]: Finished difference. Result has 139 places, 111 transitions, 739 flow [2025-02-08 14:04:17,786 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=739, PETRI_PLACES=139, PETRI_TRANSITIONS=111} [2025-02-08 14:04:17,787 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 61 predicate places. [2025-02-08 14:04:17,787 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 111 transitions, 739 flow [2025-02-08 14:04:17,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 47.25) internal successors, (1134), 24 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:04:17,787 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:04:17,788 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:04:17,795 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-08 14:04:17,992 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,SelfDestructingSolverStorable11 [2025-02-08 14:04:17,992 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-08 14:04:17,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:04:17,992 INFO L85 PathProgramCache]: Analyzing trace with hash 116106993, now seen corresponding path program 2 times [2025-02-08 14:04:17,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:04:17,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227931335] [2025-02-08 14:04:17,993 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:04:17,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:04:18,015 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 45 statements into 2 equivalence classes. [2025-02-08 14:04:18,031 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 45 of 45 statements. [2025-02-08 14:04:18,032 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 14:04:18,032 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:04:18,410 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:04:18,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:04:18,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227931335] [2025-02-08 14:04:18,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227931335] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:04:18,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704918420] [2025-02-08 14:04:18,413 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:04:18,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:04:18,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:04:18,416 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) [2025-02-08 14:04:18,419 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 [2025-02-08 14:04:18,532 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 45 statements into 2 equivalence classes. [2025-02-08 14:04:18,555 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 45 of 45 statements. [2025-02-08 14:04:18,555 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 14:04:18,555 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:04:18,557 INFO L256 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-08 14:04:18,559 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:04:18,638 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:04:18,639 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:04:18,820 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:04:18,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704918420] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:04:18,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:04:18,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2025-02-08 14:04:18,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263932793] [2025-02-08 14:04:18,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:04:18,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-08 14:04:18,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:04:18,824 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-08 14:04:18,825 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2025-02-08 14:04:18,850 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 110 [2025-02-08 14:04:18,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 111 transitions, 739 flow. Second operand has 24 states, 24 states have (on average 50.125) internal successors, (1203), 24 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:04:18,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:04:18,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 110 [2025-02-08 14:04:18,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:04:31,513 INFO L124 PetriNetUnfolderBase]: 58425/117456 cut-off events. [2025-02-08 14:04:31,513 INFO L125 PetriNetUnfolderBase]: For 247188/250812 co-relation queries the response was YES. [2025-02-08 14:04:32,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287113 conditions, 117456 events. 58425/117456 cut-off events. For 247188/250812 co-relation queries the response was YES. Maximal size of possible extension queue 1023. Compared 1155377 event pairs, 1438 based on Foata normal form. 4082/109009 useless extension candidates. Maximal degree in co-relation 287076. Up to 16974 conditions per place. [2025-02-08 14:04:32,725 INFO L140 encePairwiseOnDemand]: 106/110 looper letters, 1316 selfloop transitions, 23 changer transitions 0/1368 dead transitions. [2025-02-08 14:04:32,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 1368 transitions, 14241 flow [2025-02-08 14:04:32,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-02-08 14:04:32,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2025-02-08 14:04:32,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1524 transitions. [2025-02-08 14:04:32,729 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6023715415019762 [2025-02-08 14:04:32,729 INFO L175 Difference]: Start difference. First operand has 139 places, 111 transitions, 739 flow. Second operand 23 states and 1524 transitions. [2025-02-08 14:04:32,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 1368 transitions, 14241 flow [2025-02-08 14:04:32,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 1368 transitions, 11863 flow, removed 264 selfloop flow, removed 10 redundant places. [2025-02-08 14:04:32,939 INFO L231 Difference]: Finished difference. Result has 157 places, 123 transitions, 759 flow [2025-02-08 14:04:32,939 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=629, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=759, PETRI_PLACES=157, PETRI_TRANSITIONS=123} [2025-02-08 14:04:32,940 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 79 predicate places. [2025-02-08 14:04:32,940 INFO L471 AbstractCegarLoop]: Abstraction has has 157 places, 123 transitions, 759 flow [2025-02-08 14:04:32,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 50.125) internal successors, (1203), 24 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:04:32,940 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:04:32,940 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:04:32,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-02-08 14:04:33,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:04:33,141 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting counter_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-02-08 14:04:33,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:04:33,142 INFO L85 PathProgramCache]: Analyzing trace with hash 418449630, now seen corresponding path program 3 times [2025-02-08 14:04:33,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:04:33,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462713125] [2025-02-08 14:04:33,142 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 14:04:33,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:04:33,153 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 65 statements into 11 equivalence classes. [2025-02-08 14:04:33,183 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 65 of 65 statements. [2025-02-08 14:04:33,183 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-02-08 14:04:33,183 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:04:33,767 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:04:33,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:04:33,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462713125] [2025-02-08 14:04:33,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462713125] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:04:33,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618645549] [2025-02-08 14:04:33,768 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 14:04:33,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:04:33,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:04:33,770 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:04:33,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-08 14:04:33,851 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 65 statements into 11 equivalence classes. [2025-02-08 14:04:33,884 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 65 of 65 statements. [2025-02-08 14:04:33,884 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-02-08 14:04:33,884 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:04:33,886 INFO L256 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-02-08 14:04:33,888 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:04:34,004 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:04:34,005 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:04:34,543 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:04:34,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618645549] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:04:34,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:04:34,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 46 [2025-02-08 14:04:34,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026163294] [2025-02-08 14:04:34,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:04:34,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2025-02-08 14:04:34,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:04:34,546 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-02-08 14:04:34,547 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2025-02-08 14:04:34,621 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 110 [2025-02-08 14:04:34,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 123 transitions, 759 flow. Second operand has 48 states, 48 states have (on average 46.875) internal successors, (2250), 48 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:04:34,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:04:34,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 110 [2025-02-08 14:04:34,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand