./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 c00e63dc 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-?-c00e63d-m [2025-02-06 18:42:45,165 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 18:42:45,223 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-06 18:42:45,228 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 18:42:45,232 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 18:42:45,253 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 18:42:45,254 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 18:42:45,254 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 18:42:45,254 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 18:42:45,255 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 18:42:45,255 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 18:42:45,256 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 18:42:45,256 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 18:42:45,256 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 18:42:45,256 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 18:42:45,257 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 18:42:45,257 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 18:42:45,257 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 18:42:45,257 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 18:42:45,257 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 18:42:45,257 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 18:42:45,258 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 18:42:45,258 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 18:42:45,258 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 18:42:45,258 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-06 18:42:45,258 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 18:42:45,258 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 18:42:45,258 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 18:42:45,258 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 18:42:45,258 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 18:42:45,259 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 18:42:45,259 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 18:42:45,259 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 18:42:45,259 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 18:42:45,259 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:42:45,259 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 18:42:45,259 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 18:42:45,259 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 18:42:45,260 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 18:42:45,260 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 18:42:45,260 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 18:42:45,260 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 18:42:45,260 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 18:42:45,260 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 18:42:45,260 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 18:42:45,260 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 [2025-02-06 18:42:45,564 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 18:42:45,575 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 18:42:45,577 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 18:42:45,579 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 18:42:45,580 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 18:42:45,582 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr.i [2025-02-06 18:42:46,887 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/43a035a2e/9095b42915fb4cebb7e6aa8107e734c2/FLAG8d41a2743 [2025-02-06 18:42:47,268 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 18:42:47,271 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr.i [2025-02-06 18:42:47,300 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/43a035a2e/9095b42915fb4cebb7e6aa8107e734c2/FLAG8d41a2743 [2025-02-06 18:42:47,317 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/43a035a2e/9095b42915fb4cebb7e6aa8107e734c2 [2025-02-06 18:42:47,320 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 18:42:47,321 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 18:42:47,323 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 18:42:47,323 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 18:42:47,327 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 18:42:47,328 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:42:47" (1/1) ... [2025-02-06 18:42:47,328 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c75fcdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:42:47, skipping insertion in model container [2025-02-06 18:42:47,330 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:42:47" (1/1) ... [2025-02-06 18:42:47,379 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 18:42:47,915 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:42:47,935 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 18:42:48,010 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:42:48,129 INFO L204 MainTranslator]: Completed translation [2025-02-06 18:42:48,130 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:42:48 WrapperNode [2025-02-06 18:42:48,130 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 18:42:48,131 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 18:42:48,132 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 18:42:48,132 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 18:42:48,138 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:42:48" (1/1) ... [2025-02-06 18:42:48,170 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:42:48" (1/1) ... [2025-02-06 18:42:48,203 INFO L138 Inliner]: procedures = 525, calls = 30, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 107 [2025-02-06 18:42:48,203 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 18:42:48,204 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 18:42:48,204 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 18:42:48,204 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 18:42:48,212 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:42:48" (1/1) ... [2025-02-06 18:42:48,212 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:42:48" (1/1) ... [2025-02-06 18:42:48,220 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:42:48" (1/1) ... [2025-02-06 18:42:48,246 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]. [2025-02-06 18:42:48,248 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:42:48" (1/1) ... [2025-02-06 18:42:48,248 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:42:48" (1/1) ... [2025-02-06 18:42:48,269 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:42:48" (1/1) ... [2025-02-06 18:42:48,270 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:42:48" (1/1) ... [2025-02-06 18:42:48,274 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:42:48" (1/1) ... [2025-02-06 18:42:48,279 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:42:48" (1/1) ... [2025-02-06 18:42:48,291 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 18:42:48,292 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 18:42:48,292 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 18:42:48,292 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 18:42:48,293 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:42:48" (1/1) ... [2025-02-06 18:42:48,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:42:48,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:42:48,355 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) [2025-02-06 18:42:48,359 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 [2025-02-06 18:42:48,379 INFO L130 BoogieDeclarations]: Found specification of procedure counter_thread [2025-02-06 18:42:48,380 INFO L138 BoogieDeclarations]: Found implementation of procedure counter_thread [2025-02-06 18:42:48,380 INFO L130 BoogieDeclarations]: Found specification of procedure monitor_thread [2025-02-06 18:42:48,380 INFO L138 BoogieDeclarations]: Found implementation of procedure monitor_thread [2025-02-06 18:42:48,380 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-02-06 18:42:48,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 18:42:48,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 18:42:48,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 18:42:48,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 18:42:48,380 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2025-02-06 18:42:48,381 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-02-06 18:42:48,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 18:42:48,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 18:42:48,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-06 18:42:48,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-02-06 18:42:48,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-02-06 18:42:48,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-02-06 18:42:48,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-02-06 18:42:48,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2025-02-06 18:42:48,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2025-02-06 18:42:48,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 18:42:48,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 18:42:48,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-06 18:42:48,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-06 18:42:48,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-02-06 18:42:48,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-02-06 18:42:48,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-02-06 18:42:48,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-02-06 18:42:48,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-02-06 18:42:48,386 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 18:42:48,648 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 18:42:48,649 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 18:42:48,955 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 18:42:48,955 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 18:42:49,129 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 18:42:49,130 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 18:42:49,130 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:42:49 BoogieIcfgContainer [2025-02-06 18:42:49,130 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 18:42:49,132 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 18:42:49,133 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 18:42:49,136 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 18:42:49,137 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 06:42:47" (1/3) ... [2025-02-06 18:42:49,137 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a5b9198 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:42:49, skipping insertion in model container [2025-02-06 18:42:49,137 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:42:48" (2/3) ... [2025-02-06 18:42:49,137 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a5b9198 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:42:49, skipping insertion in model container [2025-02-06 18:42:49,138 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:42:49" (3/3) ... [2025-02-06 18:42:49,139 INFO L128 eAbstractionObserver]: Analyzing ICFG 04-mutex_36-trylock_nr.i [2025-02-06 18:42:49,150 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 18:42:49,153 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. [2025-02-06 18:42:49,153 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 18:42:49,211 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-06 18:42:49,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 111 transitions, 236 flow [2025-02-06 18:42:49,290 INFO L124 PetriNetUnfolderBase]: 31/109 cut-off events. [2025-02-06 18:42:49,293 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-06 18:42:49,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 109 events. 31/109 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 275 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 85. Up to 5 conditions per place. [2025-02-06 18:42:49,301 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 111 transitions, 236 flow [2025-02-06 18:42:49,305 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 98 transitions, 205 flow [2025-02-06 18:42:49,311 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 18:42:49,320 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;@24d19f02, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 18:42:49,320 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2025-02-06 18:42:49,322 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 18:42:49,322 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2025-02-06 18:42:49,322 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:42:49,323 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:42:49,323 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-06 18:42:49,323 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)] === [2025-02-06 18:42:49,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:42:49,327 INFO L85 PathProgramCache]: Analyzing trace with hash 504369, now seen corresponding path program 1 times [2025-02-06 18:42:49,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:42:49,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113646419] [2025-02-06 18:42:49,334 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:42:49,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:42:49,510 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 18:42:49,521 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 18:42:49,522 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:42:49,522 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:42:49,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:42:49,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:42:49,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113646419] [2025-02-06 18:42:49,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113646419] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:42:49,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:42:49,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 18:42:49,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203882272] [2025-02-06 18:42:49,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:42:49,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:42:49,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:42:49,730 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:42:49,730 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:42:49,745 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 111 [2025-02-06 18:42:49,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 98 transitions, 205 flow. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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) [2025-02-06 18:42:49,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:42:49,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 111 [2025-02-06 18:42:49,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:42:50,015 INFO L124 PetriNetUnfolderBase]: 581/1350 cut-off events. [2025-02-06 18:42:50,016 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2025-02-06 18:42:50,022 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 8406 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. [2025-02-06 18:42:50,031 INFO L140 encePairwiseOnDemand]: 93/111 looper letters, 32 selfloop transitions, 1 changer transitions 0/67 dead transitions. [2025-02-06 18:42:50,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 67 transitions, 209 flow [2025-02-06 18:42:50,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:42:50,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:42:50,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 194 transitions. [2025-02-06 18:42:50,042 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5825825825825826 [2025-02-06 18:42:50,074 INFO L175 Difference]: Start difference. First operand has 78 places, 98 transitions, 205 flow. Second operand 3 states and 194 transitions. [2025-02-06 18:42:50,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 67 transitions, 209 flow [2025-02-06 18:42:50,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 67 transitions, 204 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 18:42:50,081 INFO L231 Difference]: Finished difference. Result has 69 places, 67 transitions, 140 flow [2025-02-06 18:42:50,082 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, 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} [2025-02-06 18:42:50,085 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, -9 predicate places. [2025-02-06 18:42:50,085 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 67 transitions, 140 flow [2025-02-06 18:42:50,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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) [2025-02-06 18:42:50,085 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:42:50,085 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2025-02-06 18:42:50,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 18:42:50,085 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)] === [2025-02-06 18:42:50,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:42:50,086 INFO L85 PathProgramCache]: Analyzing trace with hash 15635818, now seen corresponding path program 1 times [2025-02-06 18:42:50,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:42:50,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117479710] [2025-02-06 18:42:50,086 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:42:50,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:42:50,110 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-06 18:42:50,112 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-06 18:42:50,113 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:42:50,113 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:42:50,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:42:50,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:42:50,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117479710] [2025-02-06 18:42:50,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117479710] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:42:50,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:42:50,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:42:50,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178873781] [2025-02-06 18:42:50,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:42:50,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:42:50,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:42:50,185 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:42:50,185 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:42:50,189 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 111 [2025-02-06 18:42:50,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 67 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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) [2025-02-06 18:42:50,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:42:50,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 111 [2025-02-06 18:42:50,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:42:50,363 INFO L124 PetriNetUnfolderBase]: 581/1349 cut-off events. [2025-02-06 18:42:50,363 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2025-02-06 18:42:50,370 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 8395 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. [2025-02-06 18:42:50,379 INFO L140 encePairwiseOnDemand]: 109/111 looper letters, 32 selfloop transitions, 1 changer transitions 0/66 dead transitions. [2025-02-06 18:42:50,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 66 transitions, 204 flow [2025-02-06 18:42:50,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:42:50,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:42:50,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 175 transitions. [2025-02-06 18:42:50,383 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5255255255255256 [2025-02-06 18:42:50,383 INFO L175 Difference]: Start difference. First operand has 69 places, 67 transitions, 140 flow. Second operand 3 states and 175 transitions. [2025-02-06 18:42:50,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 66 transitions, 204 flow [2025-02-06 18:42:50,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 66 transitions, 203 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:42:50,387 INFO L231 Difference]: Finished difference. Result has 69 places, 66 transitions, 139 flow [2025-02-06 18:42:50,387 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, 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} [2025-02-06 18:42:50,388 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, -9 predicate places. [2025-02-06 18:42:50,388 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 66 transitions, 139 flow [2025-02-06 18:42:50,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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) [2025-02-06 18:42:50,388 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:42:50,388 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:42:50,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 18:42:50,388 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)] === [2025-02-06 18:42:50,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:42:50,389 INFO L85 PathProgramCache]: Analyzing trace with hash -2039076305, now seen corresponding path program 1 times [2025-02-06 18:42:50,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:42:50,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944672606] [2025-02-06 18:42:50,389 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:42:50,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:42:50,445 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 18:42:50,456 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 18:42:50,456 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:42:50,456 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:42:50,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:42:50,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:42:50,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944672606] [2025-02-06 18:42:50,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944672606] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:42:50,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:42:50,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:42:50,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332882251] [2025-02-06 18:42:50,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:42:50,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:42:50,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:42:50,622 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:42:50,623 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:42:50,639 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 111 [2025-02-06 18:42:50,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 66 transitions, 139 flow. Second operand has 4 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 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) [2025-02-06 18:42:50,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:42:50,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 111 [2025-02-06 18:42:50,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:42:51,122 INFO L124 PetriNetUnfolderBase]: 1611/3603 cut-off events. [2025-02-06 18:42:51,123 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2025-02-06 18:42:51,133 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 25016 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. [2025-02-06 18:42:51,152 INFO L140 encePairwiseOnDemand]: 104/111 looper letters, 104 selfloop transitions, 4 changer transitions 0/138 dead transitions. [2025-02-06 18:42:51,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 138 transitions, 507 flow [2025-02-06 18:42:51,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:42:51,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:42:51,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 344 transitions. [2025-02-06 18:42:51,157 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6198198198198198 [2025-02-06 18:42:51,158 INFO L175 Difference]: Start difference. First operand has 69 places, 66 transitions, 139 flow. Second operand 5 states and 344 transitions. [2025-02-06 18:42:51,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 138 transitions, 507 flow [2025-02-06 18:42:51,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 138 transitions, 506 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:42:51,162 INFO L231 Difference]: Finished difference. Result has 74 places, 69 transitions, 172 flow [2025-02-06 18:42:51,162 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, 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} [2025-02-06 18:42:51,163 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, -4 predicate places. [2025-02-06 18:42:51,163 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 69 transitions, 172 flow [2025-02-06 18:42:51,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 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) [2025-02-06 18:42:51,165 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:42:51,165 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:42:51,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 18:42:51,165 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)] === [2025-02-06 18:42:51,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:42:51,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1700470999, now seen corresponding path program 1 times [2025-02-06 18:42:51,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:42:51,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891851985] [2025-02-06 18:42:51,166 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:42:51,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:42:51,185 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 18:42:51,192 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 18:42:51,192 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:42:51,192 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:42:51,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:42:51,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:42:51,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891851985] [2025-02-06 18:42:51,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891851985] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:42:51,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:42:51,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:42:51,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145708502] [2025-02-06 18:42:51,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:42:51,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:42:51,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:42:51,329 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:42:51,330 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:42:51,338 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 111 [2025-02-06 18:42:51,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 69 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 51.25) internal successors, (205), 4 states have internal predecessors, (205), 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) [2025-02-06 18:42:51,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:42:51,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 111 [2025-02-06 18:42:51,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:42:52,257 INFO L124 PetriNetUnfolderBase]: 3832/8241 cut-off events. [2025-02-06 18:42:52,258 INFO L125 PetriNetUnfolderBase]: For 882/996 co-relation queries the response was YES. [2025-02-06 18:42:52,268 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 63783 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. [2025-02-06 18:42:52,307 INFO L140 encePairwiseOnDemand]: 106/111 looper letters, 105 selfloop transitions, 4 changer transitions 0/141 dead transitions. [2025-02-06 18:42:52,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 141 transitions, 576 flow [2025-02-06 18:42:52,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:42:52,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:42:52,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 339 transitions. [2025-02-06 18:42:52,309 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6108108108108108 [2025-02-06 18:42:52,309 INFO L175 Difference]: Start difference. First operand has 74 places, 69 transitions, 172 flow. Second operand 5 states and 339 transitions. [2025-02-06 18:42:52,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 141 transitions, 576 flow [2025-02-06 18:42:52,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 141 transitions, 576 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 18:42:52,319 INFO L231 Difference]: Finished difference. Result has 79 places, 72 transitions, 196 flow [2025-02-06 18:42:52,320 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, 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} [2025-02-06 18:42:52,321 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 1 predicate places. [2025-02-06 18:42:52,321 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 72 transitions, 196 flow [2025-02-06 18:42:52,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.25) internal successors, (205), 4 states have internal predecessors, (205), 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) [2025-02-06 18:42:52,322 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:42:52,322 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:42:52,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 18:42:52,322 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)] === [2025-02-06 18:42:52,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:42:52,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1047225198, now seen corresponding path program 1 times [2025-02-06 18:42:52,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:42:52,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97060388] [2025-02-06 18:42:52,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:42:52,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:42:52,347 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 18:42:52,356 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 18:42:52,358 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:42:52,358 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:42:52,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:42:52,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:42:52,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97060388] [2025-02-06 18:42:52,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97060388] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:42:52,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:42:52,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:42:52,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383397158] [2025-02-06 18:42:52,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:42:52,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:42:52,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:42:52,447 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:42:52,447 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:42:52,461 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 111 [2025-02-06 18:42:52,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 72 transitions, 196 flow. Second operand has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 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) [2025-02-06 18:42:52,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:42:52,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 111 [2025-02-06 18:42:52,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:42:53,502 INFO L124 PetriNetUnfolderBase]: 4603/9884 cut-off events. [2025-02-06 18:42:53,503 INFO L125 PetriNetUnfolderBase]: For 1174/1302 co-relation queries the response was YES. [2025-02-06 18:42:53,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19334 conditions, 9884 events. 4603/9884 cut-off events. For 1174/1302 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 78654 event pairs, 3356 based on Foata normal form. 373/9066 useless extension candidates. Maximal degree in co-relation 19323. Up to 5931 conditions per place. [2025-02-06 18:42:53,561 INFO L140 encePairwiseOnDemand]: 105/111 looper letters, 80 selfloop transitions, 4 changer transitions 0/114 dead transitions. [2025-02-06 18:42:53,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 114 transitions, 486 flow [2025-02-06 18:42:53,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:42:53,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:42:53,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 258 transitions. [2025-02-06 18:42:53,564 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.581081081081081 [2025-02-06 18:42:53,564 INFO L175 Difference]: Start difference. First operand has 79 places, 72 transitions, 196 flow. Second operand 4 states and 258 transitions. [2025-02-06 18:42:53,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 114 transitions, 486 flow [2025-02-06 18:42:53,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 114 transitions, 486 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 18:42:53,569 INFO L231 Difference]: Finished difference. Result has 84 places, 74 transitions, 226 flow [2025-02-06 18:42:53,569 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, 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} [2025-02-06 18:42:53,570 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 6 predicate places. [2025-02-06 18:42:53,570 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 74 transitions, 226 flow [2025-02-06 18:42:53,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 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) [2025-02-06 18:42:53,571 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:42:53,571 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:42:53,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 18:42:53,572 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)] === [2025-02-06 18:42:53,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:42:53,575 INFO L85 PathProgramCache]: Analyzing trace with hash 757098282, now seen corresponding path program 1 times [2025-02-06 18:42:53,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:42:53,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229284589] [2025-02-06 18:42:53,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:42:53,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:42:53,593 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 18:42:53,600 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 18:42:53,600 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:42:53,600 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:42:53,728 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:42:53,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:42:53,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229284589] [2025-02-06 18:42:53,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229284589] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:42:53,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224761764] [2025-02-06 18:42:53,728 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:42:53,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:42:53,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:42:53,734 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) [2025-02-06 18:42:53,735 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 [2025-02-06 18:42:53,890 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 18:42:53,905 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 18:42:53,905 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:42:53,906 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:42:53,908 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:42:53,911 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:42:53,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:42:53,982 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:42:53,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224761764] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:42:53,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:42:53,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-06 18:42:53,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564381014] [2025-02-06 18:42:53,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:42:53,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:42:53,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:42:53,984 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:42:53,984 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-06 18:42:54,005 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 111 [2025-02-06 18:42:54,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 74 transitions, 226 flow. Second operand has 6 states, 6 states have (on average 48.166666666666664) internal successors, (289), 6 states have internal predecessors, (289), 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) [2025-02-06 18:42:54,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:42:54,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 111 [2025-02-06 18:42:54,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:42:54,956 INFO L124 PetriNetUnfolderBase]: 4000/8849 cut-off events. [2025-02-06 18:42:54,957 INFO L125 PetriNetUnfolderBase]: For 3340/3472 co-relation queries the response was YES. [2025-02-06 18:42:54,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18391 conditions, 8849 events. 4000/8849 cut-off events. For 3340/3472 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 70345 event pairs, 821 based on Foata normal form. 330/8255 useless extension candidates. Maximal degree in co-relation 18377. Up to 3087 conditions per place. [2025-02-06 18:42:55,008 INFO L140 encePairwiseOnDemand]: 106/111 looper letters, 113 selfloop transitions, 4 changer transitions 0/147 dead transitions. [2025-02-06 18:42:55,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 147 transitions, 657 flow [2025-02-06 18:42:55,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:42:55,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:42:55,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 382 transitions. [2025-02-06 18:42:55,011 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5735735735735735 [2025-02-06 18:42:55,011 INFO L175 Difference]: Start difference. First operand has 84 places, 74 transitions, 226 flow. Second operand 6 states and 382 transitions. [2025-02-06 18:42:55,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 147 transitions, 657 flow [2025-02-06 18:42:55,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 147 transitions, 654 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:42:55,027 INFO L231 Difference]: Finished difference. Result has 86 places, 72 transitions, 222 flow [2025-02-06 18:42:55,027 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, 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} [2025-02-06 18:42:55,028 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 8 predicate places. [2025-02-06 18:42:55,029 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 72 transitions, 222 flow [2025-02-06 18:42:55,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 48.166666666666664) internal successors, (289), 6 states have internal predecessors, (289), 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) [2025-02-06 18:42:55,030 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:42:55,030 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:42:55,039 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 18:42:55,232 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 [2025-02-06 18:42:55,232 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)] === [2025-02-06 18:42:55,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:42:55,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1995210789, now seen corresponding path program 1 times [2025-02-06 18:42:55,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:42:55,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427978390] [2025-02-06 18:42:55,234 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:42:55,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:42:55,253 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-06 18:42:55,260 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 18:42:55,261 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:42:55,261 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:42:55,403 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:42:55,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:42:55,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427978390] [2025-02-06 18:42:55,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427978390] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:42:55,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957070806] [2025-02-06 18:42:55,404 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:42:55,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:42:55,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:42:55,406 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) [2025-02-06 18:42:55,409 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 [2025-02-06 18:42:55,500 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-06 18:42:55,513 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 18:42:55,513 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:42:55,513 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:42:55,514 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:42:55,515 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:42:55,565 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:42:55,565 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:42:55,648 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:42:55,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957070806] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:42:55,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:42:55,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-02-06 18:42:55,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843902210] [2025-02-06 18:42:55,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:42:55,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 18:42:55,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:42:55,650 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 18:42:55,650 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-06 18:42:55,679 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 111 [2025-02-06 18:42:55,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 72 transitions, 222 flow. Second operand has 12 states, 12 states have (on average 49.0) internal successors, (588), 12 states have internal predecessors, (588), 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) [2025-02-06 18:42:55,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:42:55,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 111 [2025-02-06 18:42:55,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:42:57,139 INFO L124 PetriNetUnfolderBase]: 6961/15800 cut-off events. [2025-02-06 18:42:57,140 INFO L125 PetriNetUnfolderBase]: For 7076/7324 co-relation queries the response was YES. [2025-02-06 18:42:57,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32798 conditions, 15800 events. 6961/15800 cut-off events. For 7076/7324 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 138187 event pairs, 821 based on Foata normal form. 663/14906 useless extension candidates. Maximal degree in co-relation 32783. Up to 2331 conditions per place. [2025-02-06 18:42:57,335 INFO L140 encePairwiseOnDemand]: 106/111 looper letters, 246 selfloop transitions, 15 changer transitions 0/291 dead transitions. [2025-02-06 18:42:57,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 291 transitions, 1378 flow [2025-02-06 18:42:57,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 18:42:57,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 18:42:57,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 739 transitions. [2025-02-06 18:42:57,338 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6052416052416052 [2025-02-06 18:42:57,338 INFO L175 Difference]: Start difference. First operand has 86 places, 72 transitions, 222 flow. Second operand 11 states and 739 transitions. [2025-02-06 18:42:57,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 291 transitions, 1378 flow [2025-02-06 18:42:57,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 291 transitions, 1371 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-06 18:42:57,349 INFO L231 Difference]: Finished difference. Result has 98 places, 80 transitions, 330 flow [2025-02-06 18:42:57,349 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, 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} [2025-02-06 18:42:57,350 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 20 predicate places. [2025-02-06 18:42:57,350 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 80 transitions, 330 flow [2025-02-06 18:42:57,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 49.0) internal successors, (588), 12 states have internal predecessors, (588), 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) [2025-02-06 18:42:57,350 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:42:57,351 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:42:57,359 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-06 18:42:57,555 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 [2025-02-06 18:42:57,555 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)] === [2025-02-06 18:42:57,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:42:57,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1721992909, now seen corresponding path program 1 times [2025-02-06 18:42:57,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:42:57,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693053032] [2025-02-06 18:42:57,556 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:42:57,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:42:57,576 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 18:42:57,581 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 18:42:57,582 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:42:57,582 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:42:57,665 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:42:57,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:42:57,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693053032] [2025-02-06 18:42:57,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693053032] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:42:57,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962785013] [2025-02-06 18:42:57,666 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:42:57,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:42:57,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:42:57,669 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) [2025-02-06 18:42:57,671 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 [2025-02-06 18:42:57,754 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 18:42:57,767 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 18:42:57,768 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:42:57,768 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:42:57,768 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:42:57,769 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:42:57,801 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:42:57,802 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:42:57,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962785013] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:42:57,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:42:57,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-02-06 18:42:57,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049240136] [2025-02-06 18:42:57,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:42:57,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:42:57,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:42:57,803 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:42:57,803 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-06 18:42:57,814 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 111 [2025-02-06 18:42:57,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 80 transitions, 330 flow. Second operand has 6 states, 6 states have (on average 48.5) internal successors, (291), 6 states have internal predecessors, (291), 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) [2025-02-06 18:42:57,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:42:57,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 111 [2025-02-06 18:42:57,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:42:59,071 INFO L124 PetriNetUnfolderBase]: 7861/16447 cut-off events. [2025-02-06 18:42:59,072 INFO L125 PetriNetUnfolderBase]: For 11748/12088 co-relation queries the response was YES. [2025-02-06 18:42:59,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37321 conditions, 16447 events. 7861/16447 cut-off events. For 11748/12088 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 135315 event pairs, 776 based on Foata normal form. 219/14843 useless extension candidates. Maximal degree in co-relation 37300. Up to 7995 conditions per place. [2025-02-06 18:42:59,159 INFO L140 encePairwiseOnDemand]: 107/111 looper letters, 126 selfloop transitions, 13 changer transitions 0/167 dead transitions. [2025-02-06 18:42:59,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 167 transitions, 870 flow [2025-02-06 18:42:59,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:42:59,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:42:59,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 387 transitions. [2025-02-06 18:42:59,161 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.581081081081081 [2025-02-06 18:42:59,161 INFO L175 Difference]: Start difference. First operand has 98 places, 80 transitions, 330 flow. Second operand 6 states and 387 transitions. [2025-02-06 18:42:59,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 167 transitions, 870 flow [2025-02-06 18:42:59,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 167 transitions, 836 flow, removed 12 selfloop flow, removed 4 redundant places. [2025-02-06 18:42:59,201 INFO L231 Difference]: Finished difference. Result has 98 places, 80 transitions, 330 flow [2025-02-06 18:42:59,201 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, 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} [2025-02-06 18:42:59,202 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 20 predicate places. [2025-02-06 18:42:59,202 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 80 transitions, 330 flow [2025-02-06 18:42:59,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 48.5) internal successors, (291), 6 states have internal predecessors, (291), 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) [2025-02-06 18:42:59,204 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:42:59,204 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:42:59,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-06 18:42:59,405 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 [2025-02-06 18:42:59,405 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)] === [2025-02-06 18:42:59,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:42:59,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1842173163, now seen corresponding path program 1 times [2025-02-06 18:42:59,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:42:59,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355648112] [2025-02-06 18:42:59,406 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:42:59,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:42:59,420 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-06 18:42:59,425 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 18:42:59,425 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:42:59,425 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:42:59,472 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:42:59,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:42:59,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355648112] [2025-02-06 18:42:59,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355648112] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:42:59,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:42:59,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:42:59,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447870441] [2025-02-06 18:42:59,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:42:59,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:42:59,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:42:59,474 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:42:59,474 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:42:59,481 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 111 [2025-02-06 18:42:59,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 80 transitions, 330 flow. Second operand has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 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) [2025-02-06 18:42:59,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:42:59,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 111 [2025-02-06 18:42:59,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:00,831 INFO L124 PetriNetUnfolderBase]: 7681/16206 cut-off events. [2025-02-06 18:43:00,834 INFO L125 PetriNetUnfolderBase]: For 13502/13750 co-relation queries the response was YES. [2025-02-06 18:43:00,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36752 conditions, 16206 events. 7681/16206 cut-off events. For 13502/13750 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 136093 event pairs, 4904 based on Foata normal form. 237/14775 useless extension candidates. Maximal degree in co-relation 36732. Up to 8680 conditions per place. [2025-02-06 18:43:00,898 INFO L140 encePairwiseOnDemand]: 106/111 looper letters, 76 selfloop transitions, 17 changer transitions 0/121 dead transitions. [2025-02-06 18:43:00,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 121 transitions, 643 flow [2025-02-06 18:43:00,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:43:00,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:43:00,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 252 transitions. [2025-02-06 18:43:00,899 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5675675675675675 [2025-02-06 18:43:00,899 INFO L175 Difference]: Start difference. First operand has 98 places, 80 transitions, 330 flow. Second operand 4 states and 252 transitions. [2025-02-06 18:43:00,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 121 transitions, 643 flow [2025-02-06 18:43:00,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 121 transitions, 622 flow, removed 1 selfloop flow, removed 3 redundant places. [2025-02-06 18:43:00,924 INFO L231 Difference]: Finished difference. Result has 98 places, 83 transitions, 378 flow [2025-02-06 18:43:00,925 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, 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} [2025-02-06 18:43:00,925 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 20 predicate places. [2025-02-06 18:43:00,925 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 83 transitions, 378 flow [2025-02-06 18:43:00,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 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) [2025-02-06 18:43:00,926 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:00,926 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:00,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-06 18:43:00,926 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)] === [2025-02-06 18:43:00,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:00,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1140436572, now seen corresponding path program 1 times [2025-02-06 18:43:00,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:00,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387516875] [2025-02-06 18:43:00,927 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:43:00,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:00,939 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-06 18:43:00,943 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 18:43:00,944 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:43:00,944 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:01,027 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:43:01,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:01,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387516875] [2025-02-06 18:43:01,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387516875] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:43:01,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314607456] [2025-02-06 18:43:01,027 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:43:01,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:43:01,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:43:01,030 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) [2025-02-06 18:43:01,032 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 [2025-02-06 18:43:01,114 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-06 18:43:01,128 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 18:43:01,128 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:43:01,128 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:01,129 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:43:01,131 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:43:01,168 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:43:01,169 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:43:01,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314607456] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:01,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:43:01,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-02-06 18:43:01,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669234986] [2025-02-06 18:43:01,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:01,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:43:01,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:01,170 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:43:01,170 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-06 18:43:01,176 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 111 [2025-02-06 18:43:01,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 83 transitions, 378 flow. Second operand has 6 states, 6 states have (on average 51.166666666666664) internal successors, (307), 6 states have internal predecessors, (307), 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) [2025-02-06 18:43:01,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:01,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 111 [2025-02-06 18:43:01,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:02,174 INFO L124 PetriNetUnfolderBase]: 7154/14551 cut-off events. [2025-02-06 18:43:02,174 INFO L125 PetriNetUnfolderBase]: For 17435/17879 co-relation queries the response was YES. [2025-02-06 18:43:02,206 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 117632 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. [2025-02-06 18:43:02,242 INFO L140 encePairwiseOnDemand]: 107/111 looper letters, 191 selfloop transitions, 4 changer transitions 0/224 dead transitions. [2025-02-06 18:43:02,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 224 transitions, 1640 flow [2025-02-06 18:43:02,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:43:02,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:43:02,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 399 transitions. [2025-02-06 18:43:02,244 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5990990990990991 [2025-02-06 18:43:02,244 INFO L175 Difference]: Start difference. First operand has 98 places, 83 transitions, 378 flow. Second operand 6 states and 399 transitions. [2025-02-06 18:43:02,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 224 transitions, 1640 flow [2025-02-06 18:43:02,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 224 transitions, 1518 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:43:02,261 INFO L231 Difference]: Finished difference. Result has 100 places, 82 transitions, 356 flow [2025-02-06 18:43:02,262 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, 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} [2025-02-06 18:43:02,263 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 22 predicate places. [2025-02-06 18:43:02,263 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 82 transitions, 356 flow [2025-02-06 18:43:02,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 51.166666666666664) internal successors, (307), 6 states have internal predecessors, (307), 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) [2025-02-06 18:43:02,263 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:02,263 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:02,272 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-06 18:43:02,464 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 [2025-02-06 18:43:02,464 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)] === [2025-02-06 18:43:02,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:02,465 INFO L85 PathProgramCache]: Analyzing trace with hash 993795854, now seen corresponding path program 1 times [2025-02-06 18:43:02,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:02,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363012606] [2025-02-06 18:43:02,465 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:43:02,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:02,481 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-06 18:43:02,485 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 18:43:02,486 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:43:02,486 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:02,569 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:43:02,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:02,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363012606] [2025-02-06 18:43:02,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363012606] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:43:02,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230940405] [2025-02-06 18:43:02,570 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:43:02,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:43:02,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:43:02,572 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) [2025-02-06 18:43:02,574 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 [2025-02-06 18:43:02,655 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-06 18:43:02,669 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 18:43:02,669 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:43:02,669 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:02,670 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:43:02,673 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:43:02,707 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:43:02,707 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:43:02,757 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:43:02,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230940405] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:43:02,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:43:02,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-02-06 18:43:02,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094934581] [2025-02-06 18:43:02,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:43:02,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 18:43:02,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:02,758 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 18:43:02,758 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-06 18:43:02,774 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 111 [2025-02-06 18:43:02,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 82 transitions, 356 flow. Second operand has 12 states, 12 states have (on average 51.25) internal successors, (615), 12 states have internal predecessors, (615), 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) [2025-02-06 18:43:02,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:02,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 111 [2025-02-06 18:43:02,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:04,492 INFO L124 PetriNetUnfolderBase]: 11859/24084 cut-off events. [2025-02-06 18:43:04,492 INFO L125 PetriNetUnfolderBase]: For 22792/23536 co-relation queries the response was YES. [2025-02-06 18:43:04,548 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 205428 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. [2025-02-06 18:43:04,614 INFO L140 encePairwiseOnDemand]: 107/111 looper letters, 362 selfloop transitions, 11 changer transitions 0/402 dead transitions. [2025-02-06 18:43:04,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 402 transitions, 2868 flow [2025-02-06 18:43:04,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 18:43:04,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 18:43:04,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 734 transitions. [2025-02-06 18:43:04,616 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6011466011466011 [2025-02-06 18:43:04,616 INFO L175 Difference]: Start difference. First operand has 100 places, 82 transitions, 356 flow. Second operand 11 states and 734 transitions. [2025-02-06 18:43:04,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 402 transitions, 2868 flow [2025-02-06 18:43:04,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 402 transitions, 2861 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-06 18:43:04,636 INFO L231 Difference]: Finished difference. Result has 109 places, 87 transitions, 403 flow [2025-02-06 18:43:04,637 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, 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} [2025-02-06 18:43:04,637 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 31 predicate places. [2025-02-06 18:43:04,637 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 87 transitions, 403 flow [2025-02-06 18:43:04,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 51.25) internal successors, (615), 12 states have internal predecessors, (615), 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) [2025-02-06 18:43:04,638 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:04,638 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:04,646 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-06 18:43:04,838 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 [2025-02-06 18:43:04,839 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)] === [2025-02-06 18:43:04,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:04,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1543119872, now seen corresponding path program 2 times [2025-02-06 18:43:04,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:04,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541295720] [2025-02-06 18:43:04,839 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:43:04,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:04,854 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 35 statements into 2 equivalence classes. [2025-02-06 18:43:04,864 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 18:43:04,864 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:43:04,864 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:05,126 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:43:05,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:05,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541295720] [2025-02-06 18:43:05,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541295720] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:43:05,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179123282] [2025-02-06 18:43:05,127 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:43:05,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:43:05,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:43:05,130 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) [2025-02-06 18:43:05,132 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 [2025-02-06 18:43:05,224 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 35 statements into 2 equivalence classes. [2025-02-06 18:43:05,242 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 18:43:05,242 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:43:05,242 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:05,243 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-06 18:43:05,244 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:43:05,319 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:43:05,319 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:43:05,501 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:43:05,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179123282] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:43:05,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:43:05,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2025-02-06 18:43:05,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831514574] [2025-02-06 18:43:05,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:43:05,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-06 18:43:05,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:05,504 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-06 18:43:05,505 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2025-02-06 18:43:05,550 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 111 [2025-02-06 18:43:05,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 87 transitions, 403 flow. Second operand has 24 states, 24 states have (on average 48.25) internal successors, (1158), 24 states have internal predecessors, (1158), 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) [2025-02-06 18:43:05,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:05,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 111 [2025-02-06 18:43:05,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:10,853 INFO L124 PetriNetUnfolderBase]: 26032/57971 cut-off events. [2025-02-06 18:43:10,853 INFO L125 PetriNetUnfolderBase]: For 94026/94320 co-relation queries the response was YES. [2025-02-06 18:43:11,081 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 573845 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. [2025-02-06 18:43:11,236 INFO L140 encePairwiseOnDemand]: 106/111 looper letters, 650 selfloop transitions, 43 changer transitions 0/721 dead transitions. [2025-02-06 18:43:11,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 721 transitions, 4444 flow [2025-02-06 18:43:11,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-02-06 18:43:11,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2025-02-06 18:43:11,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1564 transitions. [2025-02-06 18:43:11,242 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6126126126126126 [2025-02-06 18:43:11,242 INFO L175 Difference]: Start difference. First operand has 109 places, 87 transitions, 403 flow. Second operand 23 states and 1564 transitions. [2025-02-06 18:43:11,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 721 transitions, 4444 flow [2025-02-06 18:43:11,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 721 transitions, 4004 flow, removed 132 selfloop flow, removed 4 redundant places. [2025-02-06 18:43:11,316 INFO L231 Difference]: Finished difference. Result has 139 places, 111 transitions, 739 flow [2025-02-06 18:43:11,316 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, 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} [2025-02-06 18:43:11,316 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 61 predicate places. [2025-02-06 18:43:11,316 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 111 transitions, 739 flow [2025-02-06 18:43:11,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 48.25) internal successors, (1158), 24 states have internal predecessors, (1158), 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) [2025-02-06 18:43:11,317 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:11,317 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:11,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-06 18:43:11,517 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 [2025-02-06 18:43:11,518 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)] === [2025-02-06 18:43:11,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:11,518 INFO L85 PathProgramCache]: Analyzing trace with hash -9118925, now seen corresponding path program 2 times [2025-02-06 18:43:11,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:11,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253139669] [2025-02-06 18:43:11,519 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:43:11,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:11,541 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 45 statements into 2 equivalence classes. [2025-02-06 18:43:11,557 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 45 of 45 statements. [2025-02-06 18:43:11,557 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:43:11,557 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:11,918 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:43:11,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:11,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253139669] [2025-02-06 18:43:11,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253139669] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:43:11,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68792711] [2025-02-06 18:43:11,918 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:43:11,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:43:11,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:43:11,922 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) [2025-02-06 18:43:11,923 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 [2025-02-06 18:43:12,009 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 45 statements into 2 equivalence classes. [2025-02-06 18:43:12,032 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 45 of 45 statements. [2025-02-06 18:43:12,033 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:43:12,033 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:12,034 INFO L256 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-06 18:43:12,035 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:43:12,105 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:43:12,105 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:43:12,283 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:43:12,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68792711] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:43:12,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:43:12,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2025-02-06 18:43:12,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636924089] [2025-02-06 18:43:12,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:43:12,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-06 18:43:12,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:12,285 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-06 18:43:12,285 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2025-02-06 18:43:12,311 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 111 [2025-02-06 18:43:12,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 111 transitions, 739 flow. Second operand has 24 states, 24 states have (on average 51.125) internal successors, (1227), 24 states have internal predecessors, (1227), 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) [2025-02-06 18:43:12,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:12,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 111 [2025-02-06 18:43:12,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:24,466 INFO L124 PetriNetUnfolderBase]: 58425/117456 cut-off events. [2025-02-06 18:43:24,466 INFO L125 PetriNetUnfolderBase]: For 247188/250812 co-relation queries the response was YES. [2025-02-06 18:43:25,178 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 1155261 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. [2025-02-06 18:43:25,677 INFO L140 encePairwiseOnDemand]: 107/111 looper letters, 1316 selfloop transitions, 23 changer transitions 0/1368 dead transitions. [2025-02-06 18:43:25,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 1368 transitions, 14241 flow [2025-02-06 18:43:25,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-02-06 18:43:25,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2025-02-06 18:43:25,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1547 transitions. [2025-02-06 18:43:25,681 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6059537798668233 [2025-02-06 18:43:25,681 INFO L175 Difference]: Start difference. First operand has 139 places, 111 transitions, 739 flow. Second operand 23 states and 1547 transitions. [2025-02-06 18:43:25,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 1368 transitions, 14241 flow [2025-02-06 18:43:25,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 1368 transitions, 11863 flow, removed 264 selfloop flow, removed 10 redundant places. [2025-02-06 18:43:25,906 INFO L231 Difference]: Finished difference. Result has 157 places, 123 transitions, 759 flow [2025-02-06 18:43:25,906 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, 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} [2025-02-06 18:43:25,907 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 79 predicate places. [2025-02-06 18:43:25,907 INFO L471 AbstractCegarLoop]: Abstraction has has 157 places, 123 transitions, 759 flow [2025-02-06 18:43:25,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 51.125) internal successors, (1227), 24 states have internal predecessors, (1227), 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) [2025-02-06 18:43:25,907 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:25,908 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:25,915 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 [2025-02-06 18:43:26,108 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 [2025-02-06 18:43:26,108 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)] === [2025-02-06 18:43:26,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:26,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1582080352, now seen corresponding path program 3 times [2025-02-06 18:43:26,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:26,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813636914] [2025-02-06 18:43:26,109 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 18:43:26,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:26,122 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 65 statements into 11 equivalence classes. [2025-02-06 18:43:26,152 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 65 of 65 statements. [2025-02-06 18:43:26,153 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-02-06 18:43:26,153 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:26,768 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:43:26,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:26,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813636914] [2025-02-06 18:43:26,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813636914] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:43:26,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511268449] [2025-02-06 18:43:26,769 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 18:43:26,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:43:26,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:43:26,771 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) [2025-02-06 18:43:26,773 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 [2025-02-06 18:43:26,858 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 65 statements into 11 equivalence classes. [2025-02-06 18:43:26,885 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 65 of 65 statements. [2025-02-06 18:43:26,886 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-02-06 18:43:26,886 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:26,887 INFO L256 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-02-06 18:43:26,888 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:43:26,995 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:43:26,995 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:43:27,545 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:43:27,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511268449] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:43:27,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:43:27,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 46 [2025-02-06 18:43:27,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148704914] [2025-02-06 18:43:27,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:43:27,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2025-02-06 18:43:27,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:27,547 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-02-06 18:43:27,547 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2025-02-06 18:43:27,618 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 111 [2025-02-06 18:43:27,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 123 transitions, 759 flow. Second operand has 48 states, 48 states have (on average 47.875) internal successors, (2298), 48 states have internal predecessors, (2298), 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) [2025-02-06 18:43:27,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:27,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 111 [2025-02-06 18:43:27,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand