./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.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 af00d5f4cc6a18cb9fd8a5151467217fe3ddb5ee0fa30b2cfbd9dd374105ee15 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 06:46:44,559 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 06:46:44,620 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-01-10 06:46:44,625 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 06:46:44,625 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 06:46:44,662 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 06:46:44,662 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 06:46:44,663 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 06:46:44,663 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 06:46:44,663 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 06:46:44,664 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 06:46:44,664 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 06:46:44,665 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 06:46:44,665 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 06:46:44,665 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 06:46:44,666 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 06:46:44,666 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-10 06:46:44,666 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 06:46:44,666 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 06:46:44,666 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 06:46:44,666 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 06:46:44,667 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-10 06:46:44,667 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 06:46:44,667 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-10 06:46:44,667 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-01-10 06:46:44,667 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 06:46:44,667 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 06:46:44,667 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-10 06:46:44,667 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 06:46:44,667 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 06:46:44,668 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 06:46:44,668 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 06:46:44,668 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 06:46:44,668 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 06:46:44,668 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:46:44,668 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 06:46:44,669 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 06:46:44,669 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 06:46:44,669 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 06:46:44,669 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:46:44,669 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 06:46:44,669 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 06:46:44,670 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-10 06:46:44,670 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-10 06:46:44,670 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 06:46:44,670 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 06:46:44,670 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 06:46:44,670 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 06:46:44,670 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 06:46:44,670 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 06:46:44,670 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 -> af00d5f4cc6a18cb9fd8a5151467217fe3ddb5ee0fa30b2cfbd9dd374105ee15 [2025-01-10 06:46:44,952 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 06:46:44,962 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 06:46:44,965 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 06:46:44,966 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 06:46:44,966 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 06:46:44,968 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i [2025-01-10 06:46:46,287 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9596e7814/e784ffa9d9e247d9955e6cb00c25fe6f/FLAGd3d848cc9 [2025-01-10 06:46:46,610 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 06:46:46,613 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i [2025-01-10 06:46:46,630 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9596e7814/e784ffa9d9e247d9955e6cb00c25fe6f/FLAGd3d848cc9 [2025-01-10 06:46:46,843 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9596e7814/e784ffa9d9e247d9955e6cb00c25fe6f [2025-01-10 06:46:46,846 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 06:46:46,847 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 06:46:46,848 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 06:46:46,848 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 06:46:46,851 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 06:46:46,852 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:46:46" (1/1) ... [2025-01-10 06:46:46,852 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65fd5ef4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:46:46, skipping insertion in model container [2025-01-10 06:46:46,853 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:46:46" (1/1) ... [2025-01-10 06:46:46,891 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 06:46:47,160 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 06:46:47,183 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 06:46:47,230 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 06:46:47,271 INFO L204 MainTranslator]: Completed translation [2025-01-10 06:46:47,271 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:46:47 WrapperNode [2025-01-10 06:46:47,272 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 06:46:47,273 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 06:46:47,273 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 06:46:47,273 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 06:46:47,277 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:46:47" (1/1) ... [2025-01-10 06:46:47,287 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:46:47" (1/1) ... [2025-01-10 06:46:47,307 INFO L138 Inliner]: procedures = 172, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 79 [2025-01-10 06:46:47,308 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 06:46:47,309 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 06:46:47,309 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 06:46:47,309 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 06:46:47,317 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:46:47" (1/1) ... [2025-01-10 06:46:47,317 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:46:47" (1/1) ... [2025-01-10 06:46:47,320 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:46:47" (1/1) ... [2025-01-10 06:46:47,337 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 5, 5, 2]. 36 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 1]. [2025-01-10 06:46:47,337 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:46:47" (1/1) ... [2025-01-10 06:46:47,337 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:46:47" (1/1) ... [2025-01-10 06:46:47,344 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:46:47" (1/1) ... [2025-01-10 06:46:47,345 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:46:47" (1/1) ... [2025-01-10 06:46:47,348 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:46:47" (1/1) ... [2025-01-10 06:46:47,350 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:46:47" (1/1) ... [2025-01-10 06:46:47,351 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:46:47" (1/1) ... [2025-01-10 06:46:47,353 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 06:46:47,353 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 06:46:47,354 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 06:46:47,354 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 06:46:47,355 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:46:47" (1/1) ... [2025-01-10 06:46:47,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:46:47,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:46:47,386 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-10 06:46:47,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-10 06:46:47,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-10 06:46:47,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-10 06:46:47,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-01-10 06:46:47,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-01-10 06:46:47,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-10 06:46:47,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-10 06:46:47,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-01-10 06:46:47,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-01-10 06:46:47,408 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-01-10 06:46:47,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 06:46:47,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-10 06:46:47,409 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-01-10 06:46:47,409 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-01-10 06:46:47,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-10 06:46:47,409 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2025-01-10 06:46:47,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 06:46:47,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-10 06:46:47,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-01-10 06:46:47,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-01-10 06:46:47,409 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-01-10 06:46:47,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 06:46:47,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 06:46:47,411 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-10 06:46:47,549 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 06:46:47,550 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 06:46:47,806 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-10 06:46:47,807 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 06:46:47,950 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 06:46:47,951 INFO L312 CfgBuilder]: Removed 5 assume(true) statements. [2025-01-10 06:46:47,951 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:46:47 BoogieIcfgContainer [2025-01-10 06:46:47,951 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 06:46:47,953 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 06:46:47,954 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 06:46:47,958 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 06:46:47,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:46:46" (1/3) ... [2025-01-10 06:46:47,959 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41858363 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:46:47, skipping insertion in model container [2025-01-10 06:46:47,959 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:46:47" (2/3) ... [2025-01-10 06:46:47,959 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41858363 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:46:47, skipping insertion in model container [2025-01-10 06:46:47,959 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:46:47" (3/3) ... [2025-01-10 06:46:47,960 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_41-trylock_racefree.i [2025-01-10 06:46:47,973 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 06:46:47,974 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_41-trylock_racefree.i that has 2 procedures, 51 locations, 1 initial locations, 7 loop locations, and 8 error locations. [2025-01-10 06:46:47,974 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-10 06:46:48,025 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-01-10 06:46:48,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 62 transitions, 131 flow [2025-01-10 06:46:48,114 INFO L124 PetriNetUnfolderBase]: 15/79 cut-off events. [2025-01-10 06:46:48,120 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-01-10 06:46:48,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 79 events. 15/79 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 223 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 53. Up to 6 conditions per place. [2025-01-10 06:46:48,124 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 62 transitions, 131 flow [2025-01-10 06:46:48,127 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 61 transitions, 129 flow [2025-01-10 06:46:48,137 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 06:46:48,146 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;@39c1943, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 06:46:48,146 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2025-01-10 06:46:48,152 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 06:46:48,152 INFO L124 PetriNetUnfolderBase]: 2/13 cut-off events. [2025-01-10 06:46:48,153 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 06:46:48,153 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:46:48,154 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-01-10 06:46:48,154 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-01-10 06:46:48,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:46:48,161 INFO L85 PathProgramCache]: Analyzing trace with hash 325397723, now seen corresponding path program 1 times [2025-01-10 06:46:48,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:46:48,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135386550] [2025-01-10 06:46:48,169 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:46:48,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:46:48,244 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-01-10 06:46:48,284 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-01-10 06:46:48,285 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:46:48,285 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:46:48,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:46:48,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:46:48,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135386550] [2025-01-10 06:46:48,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135386550] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:46:48,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:46:48,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 06:46:48,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80056750] [2025-01-10 06:46:48,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:46:48,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:46:48,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:46:48,475 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:46:48,475 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:46:48,490 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 62 [2025-01-10 06:46:48,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 61 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:46:48,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:46:48,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 62 [2025-01-10 06:46:48,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:46:48,701 INFO L124 PetriNetUnfolderBase]: 155/386 cut-off events. [2025-01-10 06:46:48,701 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-01-10 06:46:48,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 718 conditions, 386 events. 155/386 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1786 event pairs, 22 based on Foata normal form. 80/427 useless extension candidates. Maximal degree in co-relation 690. Up to 290 conditions per place. [2025-01-10 06:46:48,708 INFO L140 encePairwiseOnDemand]: 47/62 looper letters, 48 selfloop transitions, 3 changer transitions 0/73 dead transitions. [2025-01-10 06:46:48,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 73 transitions, 255 flow [2025-01-10 06:46:48,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:46:48,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:46:48,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 163 transitions. [2025-01-10 06:46:48,721 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.657258064516129 [2025-01-10 06:46:48,723 INFO L175 Difference]: Start difference. First operand has 54 places, 61 transitions, 129 flow. Second operand 4 states and 163 transitions. [2025-01-10 06:46:48,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 73 transitions, 255 flow [2025-01-10 06:46:48,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 73 transitions, 255 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-10 06:46:48,732 INFO L231 Difference]: Finished difference. Result has 56 places, 50 transitions, 117 flow [2025-01-10 06:46:48,734 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=117, PETRI_PLACES=56, PETRI_TRANSITIONS=50} [2025-01-10 06:46:48,738 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 2 predicate places. [2025-01-10 06:46:48,738 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 50 transitions, 117 flow [2025-01-10 06:46:48,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:46:48,738 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:46:48,739 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2025-01-10 06:46:48,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-10 06:46:48,739 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-01-10 06:46:48,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:46:48,740 INFO L85 PathProgramCache]: Analyzing trace with hash 182735672, now seen corresponding path program 1 times [2025-01-10 06:46:48,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:46:48,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145870688] [2025-01-10 06:46:48,740 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:46:48,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:46:48,759 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-10 06:46:48,772 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-10 06:46:48,775 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:46:48,775 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 06:46:48,775 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 06:46:48,779 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-10 06:46:48,795 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-10 06:46:48,798 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:46:48,798 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 06:46:48,821 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-10 06:46:48,822 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-10 06:46:48,823 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2025-01-10 06:46:48,825 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2025-01-10 06:46:48,829 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2025-01-10 06:46:48,829 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2025-01-10 06:46:48,829 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2025-01-10 06:46:48,829 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2025-01-10 06:46:48,829 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2025-01-10 06:46:48,829 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2025-01-10 06:46:48,829 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2025-01-10 06:46:48,829 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2025-01-10 06:46:48,829 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2025-01-10 06:46:48,829 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2025-01-10 06:46:48,829 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2025-01-10 06:46:48,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-10 06:46:48,830 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-01-10 06:46:48,833 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-01-10 06:46:48,835 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-01-10 06:46:48,866 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-01-10 06:46:48,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 95 transitions, 206 flow [2025-01-10 06:46:48,889 INFO L124 PetriNetUnfolderBase]: 27/148 cut-off events. [2025-01-10 06:46:48,892 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-01-10 06:46:48,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 148 events. 27/148 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 530 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 93. Up to 9 conditions per place. [2025-01-10 06:46:48,894 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 95 transitions, 206 flow [2025-01-10 06:46:48,895 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 95 transitions, 206 flow [2025-01-10 06:46:48,897 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 06:46:48,897 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;@39c1943, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 06:46:48,897 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2025-01-10 06:46:48,900 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 06:46:48,900 INFO L124 PetriNetUnfolderBase]: 2/13 cut-off events. [2025-01-10 06:46:48,900 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 06:46:48,901 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:46:48,901 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-01-10 06:46:48,901 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-01-10 06:46:48,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:46:48,901 INFO L85 PathProgramCache]: Analyzing trace with hash 416086489, now seen corresponding path program 1 times [2025-01-10 06:46:48,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:46:48,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436741959] [2025-01-10 06:46:48,902 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:46:48,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:46:48,910 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-01-10 06:46:48,914 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-01-10 06:46:48,914 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:46:48,914 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:46:48,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:46:48,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:46:48,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436741959] [2025-01-10 06:46:48,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436741959] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:46:48,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:46:48,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 06:46:48,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810679939] [2025-01-10 06:46:48,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:46:48,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:46:48,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:46:48,966 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:46:48,966 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:46:48,975 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 95 [2025-01-10 06:46:48,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 95 transitions, 206 flow. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:46:48,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:46:48,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 95 [2025-01-10 06:46:48,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:46:50,105 INFO L124 PetriNetUnfolderBase]: 4459/9284 cut-off events. [2025-01-10 06:46:50,106 INFO L125 PetriNetUnfolderBase]: For 84/84 co-relation queries the response was YES. [2025-01-10 06:46:50,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16349 conditions, 9284 events. 4459/9284 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 76219 event pairs, 2024 based on Foata normal form. 1743/9961 useless extension candidates. Maximal degree in co-relation 1309. Up to 6961 conditions per place. [2025-01-10 06:46:50,179 INFO L140 encePairwiseOnDemand]: 74/95 looper letters, 66 selfloop transitions, 3 changer transitions 0/105 dead transitions. [2025-01-10 06:46:50,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 105 transitions, 364 flow [2025-01-10 06:46:50,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:46:50,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:46:50,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 243 transitions. [2025-01-10 06:46:50,184 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6394736842105263 [2025-01-10 06:46:50,185 INFO L175 Difference]: Start difference. First operand has 82 places, 95 transitions, 206 flow. Second operand 4 states and 243 transitions. [2025-01-10 06:46:50,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 105 transitions, 364 flow [2025-01-10 06:46:50,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 105 transitions, 364 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-10 06:46:50,190 INFO L231 Difference]: Finished difference. Result has 87 places, 82 transitions, 200 flow [2025-01-10 06:46:50,190 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=200, PETRI_PLACES=87, PETRI_TRANSITIONS=82} [2025-01-10 06:46:50,191 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 5 predicate places. [2025-01-10 06:46:50,191 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 82 transitions, 200 flow [2025-01-10 06:46:50,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:46:50,191 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:46:50,191 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:46:50,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-10 06:46:50,192 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-01-10 06:46:50,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:46:50,192 INFO L85 PathProgramCache]: Analyzing trace with hash 825038631, now seen corresponding path program 1 times [2025-01-10 06:46:50,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:46:50,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977402620] [2025-01-10 06:46:50,193 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:46:50,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:46:50,206 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 06:46:50,213 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 06:46:50,216 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:46:50,217 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:46:50,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:46:50,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:46:50,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977402620] [2025-01-10 06:46:50,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977402620] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:46:50,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:46:50,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 06:46:50,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106093080] [2025-01-10 06:46:50,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:46:50,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:46:50,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:46:50,288 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:46:50,288 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:46:50,294 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 95 [2025-01-10 06:46:50,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 82 transitions, 200 flow. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:46:50,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:46:50,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 95 [2025-01-10 06:46:50,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:46:51,592 INFO L124 PetriNetUnfolderBase]: 5885/12068 cut-off events. [2025-01-10 06:46:51,592 INFO L125 PetriNetUnfolderBase]: For 456/788 co-relation queries the response was YES. [2025-01-10 06:46:51,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21906 conditions, 12068 events. 5885/12068 cut-off events. For 456/788 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 102882 event pairs, 1542 based on Foata normal form. 232/11130 useless extension candidates. Maximal degree in co-relation 21805. Up to 6030 conditions per place. [2025-01-10 06:46:51,668 INFO L140 encePairwiseOnDemand]: 86/95 looper letters, 126 selfloop transitions, 12 changer transitions 0/176 dead transitions. [2025-01-10 06:46:51,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 176 transitions, 704 flow [2025-01-10 06:46:51,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 06:46:51,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 06:46:51,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 324 transitions. [2025-01-10 06:46:51,672 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6821052631578948 [2025-01-10 06:46:51,673 INFO L175 Difference]: Start difference. First operand has 87 places, 82 transitions, 200 flow. Second operand 5 states and 324 transitions. [2025-01-10 06:46:51,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 176 transitions, 704 flow [2025-01-10 06:46:51,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 176 transitions, 700 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:46:51,680 INFO L231 Difference]: Finished difference. Result has 94 places, 93 transitions, 292 flow [2025-01-10 06:46:51,680 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=292, PETRI_PLACES=94, PETRI_TRANSITIONS=93} [2025-01-10 06:46:51,681 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 12 predicate places. [2025-01-10 06:46:51,681 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 93 transitions, 292 flow [2025-01-10 06:46:51,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:46:51,681 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:46:51,681 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2025-01-10 06:46:51,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-10 06:46:51,682 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-01-10 06:46:51,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:46:51,682 INFO L85 PathProgramCache]: Analyzing trace with hash -108330508, now seen corresponding path program 1 times [2025-01-10 06:46:51,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:46:51,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182789326] [2025-01-10 06:46:51,682 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:46:51,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:46:51,697 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 06:46:51,708 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 06:46:51,711 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:46:51,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:46:51,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:46:51,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:46:51,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182789326] [2025-01-10 06:46:51,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182789326] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:46:51,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:46:51,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 06:46:51,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568193867] [2025-01-10 06:46:51,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:46:51,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 06:46:51,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:46:51,787 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 06:46:51,788 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-10 06:46:51,797 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 95 [2025-01-10 06:46:51,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 93 transitions, 292 flow. Second operand has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:46:51,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:46:51,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 95 [2025-01-10 06:46:51,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:46:53,228 INFO L124 PetriNetUnfolderBase]: 5974/11865 cut-off events. [2025-01-10 06:46:53,228 INFO L125 PetriNetUnfolderBase]: For 4066/4073 co-relation queries the response was YES. [2025-01-10 06:46:53,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25131 conditions, 11865 events. 5974/11865 cut-off events. For 4066/4073 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 99873 event pairs, 1526 based on Foata normal form. 152/10980 useless extension candidates. Maximal degree in co-relation 16006. Up to 7417 conditions per place. [2025-01-10 06:46:53,293 INFO L140 encePairwiseOnDemand]: 90/95 looper letters, 127 selfloop transitions, 6 changer transitions 0/169 dead transitions. [2025-01-10 06:46:53,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 169 transitions, 792 flow [2025-01-10 06:46:53,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 06:46:53,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 06:46:53,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 329 transitions. [2025-01-10 06:46:53,295 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5771929824561404 [2025-01-10 06:46:53,295 INFO L175 Difference]: Start difference. First operand has 94 places, 93 transitions, 292 flow. Second operand 6 states and 329 transitions. [2025-01-10 06:46:53,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 169 transitions, 792 flow [2025-01-10 06:46:53,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 169 transitions, 792 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-10 06:46:53,309 INFO L231 Difference]: Finished difference. Result has 98 places, 92 transitions, 300 flow [2025-01-10 06:46:53,310 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=300, PETRI_PLACES=98, PETRI_TRANSITIONS=92} [2025-01-10 06:46:53,311 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 16 predicate places. [2025-01-10 06:46:53,311 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 92 transitions, 300 flow [2025-01-10 06:46:53,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:46:53,312 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:46:53,312 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2025-01-10 06:46:53,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-10 06:46:53,312 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-01-10 06:46:53,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:46:53,313 INFO L85 PathProgramCache]: Analyzing trace with hash 936722002, now seen corresponding path program 1 times [2025-01-10 06:46:53,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:46:53,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002533654] [2025-01-10 06:46:53,314 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:46:53,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:46:53,325 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-10 06:46:53,331 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-10 06:46:53,332 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:46:53,333 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:46:53,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:46:53,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:46:53,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002533654] [2025-01-10 06:46:53,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002533654] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:46:53,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:46:53,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 06:46:53,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577957405] [2025-01-10 06:46:53,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:46:53,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:46:53,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:46:53,387 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:46:53,388 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:46:53,395 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 95 [2025-01-10 06:46:53,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 92 transitions, 300 flow. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:46:53,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:46:53,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 95 [2025-01-10 06:46:53,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:46:54,258 INFO L124 PetriNetUnfolderBase]: 5711/11053 cut-off events. [2025-01-10 06:46:54,259 INFO L125 PetriNetUnfolderBase]: For 4756/4761 co-relation queries the response was YES. [2025-01-10 06:46:54,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24134 conditions, 11053 events. 5711/11053 cut-off events. For 4756/4761 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 89472 event pairs, 1963 based on Foata normal form. 160/10417 useless extension candidates. Maximal degree in co-relation 18272. Up to 7895 conditions per place. [2025-01-10 06:46:54,311 INFO L140 encePairwiseOnDemand]: 90/95 looper letters, 104 selfloop transitions, 6 changer transitions 0/146 dead transitions. [2025-01-10 06:46:54,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 146 transitions, 690 flow [2025-01-10 06:46:54,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:46:54,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:46:54,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 232 transitions. [2025-01-10 06:46:54,313 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6105263157894737 [2025-01-10 06:46:54,313 INFO L175 Difference]: Start difference. First operand has 98 places, 92 transitions, 300 flow. Second operand 4 states and 232 transitions. [2025-01-10 06:46:54,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 146 transitions, 690 flow [2025-01-10 06:46:54,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 146 transitions, 674 flow, removed 3 selfloop flow, removed 5 redundant places. [2025-01-10 06:46:54,326 INFO L231 Difference]: Finished difference. Result has 96 places, 92 transitions, 300 flow [2025-01-10 06:46:54,327 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=300, PETRI_PLACES=96, PETRI_TRANSITIONS=92} [2025-01-10 06:46:54,328 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 14 predicate places. [2025-01-10 06:46:54,328 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 92 transitions, 300 flow [2025-01-10 06:46:54,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:46:54,329 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:46:54,329 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2025-01-10 06:46:54,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-01-10 06:46:54,330 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-01-10 06:46:54,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:46:54,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1753273315, now seen corresponding path program 1 times [2025-01-10 06:46:54,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:46:54,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358774181] [2025-01-10 06:46:54,331 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:46:54,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:46:54,341 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-10 06:46:54,353 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 06:46:54,356 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:46:54,357 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 06:46:54,357 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 06:46:54,359 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-10 06:46:54,370 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 06:46:54,370 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:46:54,370 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 06:46:54,378 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-10 06:46:54,380 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-10 06:46:54,380 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2025-01-10 06:46:54,381 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2025-01-10 06:46:54,381 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2025-01-10 06:46:54,381 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2025-01-10 06:46:54,381 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2025-01-10 06:46:54,381 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2025-01-10 06:46:54,381 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2025-01-10 06:46:54,381 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2025-01-10 06:46:54,381 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2025-01-10 06:46:54,381 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2025-01-10 06:46:54,381 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2025-01-10 06:46:54,382 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2025-01-10 06:46:54,382 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2025-01-10 06:46:54,382 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2025-01-10 06:46:54,382 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2025-01-10 06:46:54,382 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2025-01-10 06:46:54,382 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2025-01-10 06:46:54,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-01-10 06:46:54,382 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2025-01-10 06:46:54,383 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-01-10 06:46:54,384 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-01-10 06:46:54,417 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-01-10 06:46:54,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 128 transitions, 283 flow [2025-01-10 06:46:54,439 INFO L124 PetriNetUnfolderBase]: 42/236 cut-off events. [2025-01-10 06:46:54,440 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2025-01-10 06:46:54,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 236 events. 42/236 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 958 event pairs, 1 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 163. Up to 12 conditions per place. [2025-01-10 06:46:54,441 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 128 transitions, 283 flow [2025-01-10 06:46:54,443 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 128 transitions, 283 flow [2025-01-10 06:46:54,444 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 06:46:54,445 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;@39c1943, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 06:46:54,445 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2025-01-10 06:46:54,446 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 06:46:54,449 INFO L124 PetriNetUnfolderBase]: 2/12 cut-off events. [2025-01-10 06:46:54,449 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 06:46:54,449 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:46:54,449 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-01-10 06:46:54,449 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-01-10 06:46:54,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:46:54,450 INFO L85 PathProgramCache]: Analyzing trace with hash 538267320, now seen corresponding path program 1 times [2025-01-10 06:46:54,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:46:54,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009267906] [2025-01-10 06:46:54,450 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:46:54,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:46:54,458 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-01-10 06:46:54,462 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-01-10 06:46:54,462 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:46:54,462 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:46:54,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:46:54,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:46:54,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009267906] [2025-01-10 06:46:54,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009267906] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:46:54,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:46:54,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 06:46:54,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606659404] [2025-01-10 06:46:54,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:46:54,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:46:54,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:46:54,496 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:46:54,496 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:46:54,504 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 128 [2025-01-10 06:46:54,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 128 transitions, 283 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) [2025-01-10 06:46:54,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:46:54,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 128 [2025-01-10 06:46:54,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:47:02,986 INFO L124 PetriNetUnfolderBase]: 83236/145586 cut-off events. [2025-01-10 06:47:02,986 INFO L125 PetriNetUnfolderBase]: For 1683/1683 co-relation queries the response was YES. [2025-01-10 06:47:03,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261478 conditions, 145586 events. 83236/145586 cut-off events. For 1683/1683 co-relation queries the response was YES. Maximal size of possible extension queue 3250. Compared 1471386 event pairs, 58036 based on Foata normal form. 31274/162606 useless extension candidates. Maximal degree in co-relation 48400. Up to 114730 conditions per place. [2025-01-10 06:47:03,702 INFO L140 encePairwiseOnDemand]: 101/128 looper letters, 79 selfloop transitions, 3 changer transitions 0/132 dead transitions. [2025-01-10 06:47:03,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 132 transitions, 455 flow [2025-01-10 06:47:03,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:47:03,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:47:03,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 318 transitions. [2025-01-10 06:47:03,704 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.62109375 [2025-01-10 06:47:03,704 INFO L175 Difference]: Start difference. First operand has 110 places, 128 transitions, 283 flow. Second operand 4 states and 318 transitions. [2025-01-10 06:47:03,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 132 transitions, 455 flow [2025-01-10 06:47:03,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 132 transitions, 455 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-10 06:47:03,708 INFO L231 Difference]: Finished difference. Result has 115 places, 109 transitions, 265 flow [2025-01-10 06:47:03,708 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=265, PETRI_PLACES=115, PETRI_TRANSITIONS=109} [2025-01-10 06:47:03,708 INFO L279 CegarLoopForPetriNet]: 110 programPoint places, 5 predicate places. [2025-01-10 06:47:03,708 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 109 transitions, 265 flow [2025-01-10 06:47:03,709 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) [2025-01-10 06:47:03,709 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:47:03,709 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2025-01-10 06:47:03,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-01-10 06:47:03,709 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-01-10 06:47:03,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:47:03,710 INFO L85 PathProgramCache]: Analyzing trace with hash 438842708, now seen corresponding path program 1 times [2025-01-10 06:47:03,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:47:03,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214532370] [2025-01-10 06:47:03,710 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:47:03,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:47:03,718 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 06:47:03,724 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 06:47:03,724 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:47:03,724 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:47:03,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:47:03,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:47:03,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214532370] [2025-01-10 06:47:03,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214532370] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:47:03,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:47:03,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 06:47:03,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835822383] [2025-01-10 06:47:03,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:47:03,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 06:47:03,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:47:03,793 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 06:47:03,793 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-10 06:47:03,803 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 128 [2025-01-10 06:47:03,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 109 transitions, 265 flow. Second operand has 6 states, 6 states have (on average 51.5) internal successors, (309), 6 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:47:03,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:47:03,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 128 [2025-01-10 06:47:03,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:47:11,423 INFO L124 PetriNetUnfolderBase]: 78220/123977 cut-off events. [2025-01-10 06:47:11,424 INFO L125 PetriNetUnfolderBase]: For 8821/8821 co-relation queries the response was YES. [2025-01-10 06:47:11,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240533 conditions, 123977 events. 78220/123977 cut-off events. For 8821/8821 co-relation queries the response was YES. Maximal size of possible extension queue 2752. Compared 1126087 event pairs, 7896 based on Foata normal form. 1872/116890 useless extension candidates. Maximal degree in co-relation 20054. Up to 75072 conditions per place. [2025-01-10 06:47:12,105 INFO L140 encePairwiseOnDemand]: 123/128 looper letters, 141 selfloop transitions, 6 changer transitions 0/197 dead transitions. [2025-01-10 06:47:12,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 197 transitions, 733 flow [2025-01-10 06:47:12,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 06:47:12,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 06:47:12,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 448 transitions. [2025-01-10 06:47:12,107 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2025-01-10 06:47:12,107 INFO L175 Difference]: Start difference. First operand has 115 places, 109 transitions, 265 flow. Second operand 6 states and 448 transitions. [2025-01-10 06:47:12,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 197 transitions, 733 flow [2025-01-10 06:47:12,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 197 transitions, 731 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:47:12,112 INFO L231 Difference]: Finished difference. Result has 118 places, 108 transitions, 271 flow [2025-01-10 06:47:12,113 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=271, PETRI_PLACES=118, PETRI_TRANSITIONS=108} [2025-01-10 06:47:12,113 INFO L279 CegarLoopForPetriNet]: 110 programPoint places, 8 predicate places. [2025-01-10 06:47:12,113 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 108 transitions, 271 flow [2025-01-10 06:47:12,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 51.5) internal successors, (309), 6 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:47:12,114 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:47:12,114 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:47:12,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-01-10 06:47:12,114 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-01-10 06:47:12,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:47:12,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1897957594, now seen corresponding path program 1 times [2025-01-10 06:47:12,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:47:12,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451325368] [2025-01-10 06:47:12,118 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:47:12,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:47:12,133 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 06:47:12,140 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 06:47:12,143 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:47:12,144 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:47:12,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:47:12,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:47:12,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451325368] [2025-01-10 06:47:12,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451325368] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:47:12,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:47:12,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 06:47:12,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306325264] [2025-01-10 06:47:12,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:47:12,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:47:12,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:47:12,200 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:47:12,200 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:47:12,216 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 128 [2025-01-10 06:47:12,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 108 transitions, 271 flow. Second operand has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:47:12,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:47:12,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 128 [2025-01-10 06:47:12,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:47:24,843 INFO L124 PetriNetUnfolderBase]: 119831/205321 cut-off events. [2025-01-10 06:47:24,843 INFO L125 PetriNetUnfolderBase]: For 16294/18542 co-relation queries the response was YES. [2025-01-10 06:47:25,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 382627 conditions, 205321 events. 119831/205321 cut-off events. For 16294/18542 co-relation queries the response was YES. Maximal size of possible extension queue 4768. Compared 2121407 event pairs, 40368 based on Foata normal form. 2994/190648 useless extension candidates. Maximal degree in co-relation 259415. Up to 111308 conditions per place. [2025-01-10 06:47:26,076 INFO L140 encePairwiseOnDemand]: 117/128 looper letters, 178 selfloop transitions, 16 changer transitions 0/245 dead transitions. [2025-01-10 06:47:26,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 245 transitions, 1017 flow [2025-01-10 06:47:26,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 06:47:26,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 06:47:26,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 450 transitions. [2025-01-10 06:47:26,079 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.703125 [2025-01-10 06:47:26,079 INFO L175 Difference]: Start difference. First operand has 118 places, 108 transitions, 271 flow. Second operand 5 states and 450 transitions. [2025-01-10 06:47:26,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 245 transitions, 1017 flow [2025-01-10 06:47:26,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 245 transitions, 994 flow, removed 5 selfloop flow, removed 4 redundant places. [2025-01-10 06:47:26,092 INFO L231 Difference]: Finished difference. Result has 122 places, 123 transitions, 387 flow [2025-01-10 06:47:26,092 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=387, PETRI_PLACES=122, PETRI_TRANSITIONS=123} [2025-01-10 06:47:26,095 INFO L279 CegarLoopForPetriNet]: 110 programPoint places, 12 predicate places. [2025-01-10 06:47:26,095 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 123 transitions, 387 flow [2025-01-10 06:47:26,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:47:26,095 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:47:26,095 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2025-01-10 06:47:26,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-01-10 06:47:26,095 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-01-10 06:47:26,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:47:26,096 INFO L85 PathProgramCache]: Analyzing trace with hash 719222642, now seen corresponding path program 1 times [2025-01-10 06:47:26,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:47:26,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021635671] [2025-01-10 06:47:26,096 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:47:26,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:47:26,107 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-10 06:47:26,112 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-10 06:47:26,112 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:47:26,113 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:47:26,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:47:26,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:47:26,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021635671] [2025-01-10 06:47:26,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021635671] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:47:26,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:47:26,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 06:47:26,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691655014] [2025-01-10 06:47:26,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:47:26,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:47:26,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:47:26,160 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:47:26,161 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:47:26,167 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 128 [2025-01-10 06:47:26,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 123 transitions, 387 flow. Second operand has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:47:26,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:47:26,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 128 [2025-01-10 06:47:26,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand