./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread/queue_longest.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread/queue_longest.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5fb3c623242420f3b3352ce2377df781fcc1efd56f82dd0011f9620e127821b3 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 13:46:58,133 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 13:46:58,198 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 13:46:58,203 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 13:46:58,205 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 13:46:58,229 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 13:46:58,230 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 13:46:58,230 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 13:46:58,230 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 13:46:58,231 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 13:46:58,231 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 13:46:58,231 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 13:46:58,232 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 13:46:58,232 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 13:46:58,232 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 13:46:58,233 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 13:46:58,233 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 13:46:58,233 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 13:46:58,234 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 13:46:58,234 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 13:46:58,234 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 13:46:58,235 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 13:46:58,235 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 13:46:58,235 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 13:46:58,235 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 13:46:58,235 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 13:46:58,236 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 13:46:58,236 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 13:46:58,236 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 13:46:58,236 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 13:46:58,236 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 13:46:58,237 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 13:46:58,237 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 13:46:58,237 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 13:46:58,237 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 13:46:58,237 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 13:46:58,238 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 13:46:58,238 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 13:46:58,241 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 13:46:58,241 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 13:46:58,241 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 13:46:58,241 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 13:46:58,241 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 13:46:58,242 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 13:46:58,242 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fb3c623242420f3b3352ce2377df781fcc1efd56f82dd0011f9620e127821b3 [2024-11-19 13:46:58,434 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 13:46:58,470 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 13:46:58,472 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 13:46:58,473 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 13:46:58,473 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 13:46:58,474 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/queue_longest.i [2024-11-19 13:46:59,882 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 13:47:00,123 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 13:47:00,124 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue_longest.i [2024-11-19 13:47:00,139 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/660d044e2/2aa8dc47127d46dfba3e566b366c15f3/FLAG9e8ca6fa6 [2024-11-19 13:47:00,164 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/660d044e2/2aa8dc47127d46dfba3e566b366c15f3 [2024-11-19 13:47:00,166 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 13:47:00,167 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 13:47:00,168 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 13:47:00,168 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 13:47:00,174 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 13:47:00,175 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:47:00" (1/1) ... [2024-11-19 13:47:00,176 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ca4f93c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:00, skipping insertion in model container [2024-11-19 13:47:00,176 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:47:00" (1/1) ... [2024-11-19 13:47:00,238 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 13:47:00,658 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 13:47:00,712 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 13:47:00,747 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 13:47:00,847 INFO L204 MainTranslator]: Completed translation [2024-11-19 13:47:00,847 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:00 WrapperNode [2024-11-19 13:47:00,848 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 13:47:00,849 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 13:47:00,849 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 13:47:00,849 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 13:47:00,854 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:00" (1/1) ... [2024-11-19 13:47:00,915 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:00" (1/1) ... [2024-11-19 13:47:01,090 INFO L138 Inliner]: procedures = 274, calls = 1659, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 1864 [2024-11-19 13:47:01,091 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 13:47:01,095 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 13:47:01,095 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 13:47:01,095 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 13:47:01,104 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:00" (1/1) ... [2024-11-19 13:47:01,105 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:00" (1/1) ... [2024-11-19 13:47:01,119 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:00" (1/1) ... [2024-11-19 13:47:01,154 INFO L175 MemorySlicer]: Split 1644 memory accesses to 4 slices as follows [2, 834, 5, 803]. 51 percent of accesses are in the largest equivalence class. The 1610 initializations are split as follows [2, 803, 5, 800]. The 16 writes are split as follows [0, 14, 0, 2]. [2024-11-19 13:47:01,154 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:00" (1/1) ... [2024-11-19 13:47:01,154 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:00" (1/1) ... [2024-11-19 13:47:01,183 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:00" (1/1) ... [2024-11-19 13:47:01,187 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:00" (1/1) ... [2024-11-19 13:47:01,192 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:00" (1/1) ... [2024-11-19 13:47:01,197 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:00" (1/1) ... [2024-11-19 13:47:01,206 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 13:47:01,207 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 13:47:01,207 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 13:47:01,207 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 13:47:01,208 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:00" (1/1) ... [2024-11-19 13:47:01,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 13:47:01,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:47:01,240 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 13:47:01,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 13:47:01,322 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-19 13:47:01,326 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-19 13:47:01,326 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-19 13:47:01,326 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-19 13:47:01,326 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-19 13:47:01,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 13:47:01,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 13:47:01,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-19 13:47:01,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-19 13:47:01,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 13:47:01,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 13:47:01,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-19 13:47:01,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-19 13:47:01,327 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-19 13:47:01,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 13:47:01,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 13:47:01,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 13:47:01,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 13:47:01,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-19 13:47:01,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 13:47:01,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 13:47:01,330 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 13:47:01,572 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 13:47:01,574 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 13:47:03,136 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 13:47:03,137 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 13:47:36,436 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 13:47:36,437 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-19 13:47:36,437 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:47:36 BoogieIcfgContainer [2024-11-19 13:47:36,437 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 13:47:36,440 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 13:47:36,443 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 13:47:36,447 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 13:47:36,450 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:47:00" (1/3) ... [2024-11-19 13:47:36,451 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2247c2e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:47:36, skipping insertion in model container [2024-11-19 13:47:36,455 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:00" (2/3) ... [2024-11-19 13:47:36,456 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2247c2e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:47:36, skipping insertion in model container [2024-11-19 13:47:36,456 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:47:36" (3/3) ... [2024-11-19 13:47:36,457 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longest.i [2024-11-19 13:47:36,476 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 13:47:36,476 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2024-11-19 13:47:36,476 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 13:47:36,641 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-19 13:47:36,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 83 transitions, 180 flow [2024-11-19 13:47:36,780 INFO L124 PetriNetUnfolderBase]: 9/81 cut-off events. [2024-11-19 13:47:36,781 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 13:47:36,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 81 events. 9/81 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 208 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 78. Up to 2 conditions per place. [2024-11-19 13:47:36,785 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 83 transitions, 180 flow [2024-11-19 13:47:36,788 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 79 transitions, 167 flow [2024-11-19 13:47:36,799 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 13:47:36,804 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;@2ba6dd9e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 13:47:36,805 INFO L334 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2024-11-19 13:47:36,842 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 13:47:36,842 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-11-19 13:47:36,842 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 13:47:36,843 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:36,843 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 13:47:36,844 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-19 13:47:36,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:36,848 INFO L85 PathProgramCache]: Analyzing trace with hash -356156547, now seen corresponding path program 1 times [2024-11-19 13:47:36,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:36,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573053137] [2024-11-19 13:47:36,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:36,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:37,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:38,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:38,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:38,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573053137] [2024-11-19 13:47:38,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573053137] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:38,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:47:38,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:47:38,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861623453] [2024-11-19 13:47:38,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:38,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:47:38,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:38,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:47:38,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:47:38,953 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 83 [2024-11-19 13:47:38,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 79 transitions, 167 flow. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 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) [2024-11-19 13:47:38,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:38,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 83 [2024-11-19 13:47:38,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:39,420 INFO L124 PetriNetUnfolderBase]: 1233/2525 cut-off events. [2024-11-19 13:47:39,421 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2024-11-19 13:47:39,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4503 conditions, 2525 events. 1233/2525 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 15719 event pairs, 205 based on Foata normal form. 48/2196 useless extension candidates. Maximal degree in co-relation 4434. Up to 1608 conditions per place. [2024-11-19 13:47:39,435 INFO L140 encePairwiseOnDemand]: 75/83 looper letters, 73 selfloop transitions, 6 changer transitions 0/109 dead transitions. [2024-11-19 13:47:39,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 109 transitions, 391 flow [2024-11-19 13:47:39,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:47:39,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:47:39,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 209 transitions. [2024-11-19 13:47:39,447 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6295180722891566 [2024-11-19 13:47:39,448 INFO L175 Difference]: Start difference. First operand has 77 places, 79 transitions, 167 flow. Second operand 4 states and 209 transitions. [2024-11-19 13:47:39,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 109 transitions, 391 flow [2024-11-19 13:47:39,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 109 transitions, 384 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 13:47:39,455 INFO L231 Difference]: Finished difference. Result has 80 places, 82 transitions, 202 flow [2024-11-19 13:47:39,457 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=202, PETRI_PLACES=80, PETRI_TRANSITIONS=82} [2024-11-19 13:47:39,460 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 3 predicate places. [2024-11-19 13:47:39,460 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 82 transitions, 202 flow [2024-11-19 13:47:39,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 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) [2024-11-19 13:47:39,461 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:39,461 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:39,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 13:47:39,461 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-19 13:47:39,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:39,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1844052889, now seen corresponding path program 1 times [2024-11-19 13:47:39,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:39,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025281996] [2024-11-19 13:47:39,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:39,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:39,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:41,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:41,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:41,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025281996] [2024-11-19 13:47:41,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025281996] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:41,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:47:41,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:47:41,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357928654] [2024-11-19 13:47:41,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:41,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:47:41,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:41,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:47:41,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:47:41,149 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 83 [2024-11-19 13:47:41,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 82 transitions, 202 flow. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 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) [2024-11-19 13:47:41,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:41,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 83 [2024-11-19 13:47:41,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:41,620 INFO L124 PetriNetUnfolderBase]: 1242/2581 cut-off events. [2024-11-19 13:47:41,620 INFO L125 PetriNetUnfolderBase]: For 452/455 co-relation queries the response was YES. [2024-11-19 13:47:41,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4890 conditions, 2581 events. 1242/2581 cut-off events. For 452/455 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 16541 event pairs, 264 based on Foata normal form. 38/2287 useless extension candidates. Maximal degree in co-relation 4354. Up to 1757 conditions per place. [2024-11-19 13:47:41,636 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 81 selfloop transitions, 6 changer transitions 0/117 dead transitions. [2024-11-19 13:47:41,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 117 transitions, 456 flow [2024-11-19 13:47:41,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 13:47:41,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 13:47:41,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 249 transitions. [2024-11-19 13:47:41,639 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-11-19 13:47:41,639 INFO L175 Difference]: Start difference. First operand has 80 places, 82 transitions, 202 flow. Second operand 5 states and 249 transitions. [2024-11-19 13:47:41,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 117 transitions, 456 flow [2024-11-19 13:47:41,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 117 transitions, 450 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 13:47:41,647 INFO L231 Difference]: Finished difference. Result has 84 places, 83 transitions, 219 flow [2024-11-19 13:47:41,651 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=219, PETRI_PLACES=84, PETRI_TRANSITIONS=83} [2024-11-19 13:47:41,652 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 7 predicate places. [2024-11-19 13:47:41,652 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 83 transitions, 219 flow [2024-11-19 13:47:41,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 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) [2024-11-19 13:47:41,652 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:41,653 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:41,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 13:47:41,653 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-19 13:47:41,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:41,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1686540228, now seen corresponding path program 1 times [2024-11-19 13:47:41,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:41,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345057269] [2024-11-19 13:47:41,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:41,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:41,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:43,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:43,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:43,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345057269] [2024-11-19 13:47:43,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345057269] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:43,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:47:43,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:47:43,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935666316] [2024-11-19 13:47:43,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:43,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 13:47:43,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:43,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 13:47:43,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 13:47:43,455 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 83 [2024-11-19 13:47:43,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 83 transitions, 219 flow. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 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) [2024-11-19 13:47:43,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:43,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 83 [2024-11-19 13:47:43,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:44,393 INFO L124 PetriNetUnfolderBase]: 1322/2691 cut-off events. [2024-11-19 13:47:44,394 INFO L125 PetriNetUnfolderBase]: For 528/544 co-relation queries the response was YES. [2024-11-19 13:47:44,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5199 conditions, 2691 events. 1322/2691 cut-off events. For 528/544 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 17156 event pairs, 266 based on Foata normal form. 40/2367 useless extension candidates. Maximal degree in co-relation 4657. Up to 1803 conditions per place. [2024-11-19 13:47:44,408 INFO L140 encePairwiseOnDemand]: 74/83 looper letters, 102 selfloop transitions, 11 changer transitions 0/143 dead transitions. [2024-11-19 13:47:44,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 143 transitions, 585 flow [2024-11-19 13:47:44,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 13:47:44,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 13:47:44,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 340 transitions. [2024-11-19 13:47:44,412 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5851979345955249 [2024-11-19 13:47:44,412 INFO L175 Difference]: Start difference. First operand has 84 places, 83 transitions, 219 flow. Second operand 7 states and 340 transitions. [2024-11-19 13:47:44,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 143 transitions, 585 flow [2024-11-19 13:47:44,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 143 transitions, 571 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-19 13:47:44,417 INFO L231 Difference]: Finished difference. Result has 90 places, 89 transitions, 274 flow [2024-11-19 13:47:44,418 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=274, PETRI_PLACES=90, PETRI_TRANSITIONS=89} [2024-11-19 13:47:44,419 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 13 predicate places. [2024-11-19 13:47:44,419 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 89 transitions, 274 flow [2024-11-19 13:47:44,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 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) [2024-11-19 13:47:44,419 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:44,420 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:44,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 13:47:44,420 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-19 13:47:44,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:44,421 INFO L85 PathProgramCache]: Analyzing trace with hash -695850318, now seen corresponding path program 1 times [2024-11-19 13:47:44,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:44,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832659988] [2024-11-19 13:47:44,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:44,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:44,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:44,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:44,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:44,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832659988] [2024-11-19 13:47:44,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832659988] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:44,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:47:44,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:47:44,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175633080] [2024-11-19 13:47:44,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:44,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 13:47:44,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:44,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 13:47:44,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 13:47:44,708 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 83 [2024-11-19 13:47:44,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 89 transitions, 274 flow. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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) [2024-11-19 13:47:44,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:44,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 83 [2024-11-19 13:47:44,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:44,996 INFO L124 PetriNetUnfolderBase]: 1023/2371 cut-off events. [2024-11-19 13:47:44,996 INFO L125 PetriNetUnfolderBase]: For 522/522 co-relation queries the response was YES. [2024-11-19 13:47:45,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4342 conditions, 2371 events. 1023/2371 cut-off events. For 522/522 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 13928 event pairs, 483 based on Foata normal form. 41/2110 useless extension candidates. Maximal degree in co-relation 4332. Up to 884 conditions per place. [2024-11-19 13:47:45,009 INFO L140 encePairwiseOnDemand]: 79/83 looper letters, 63 selfloop transitions, 3 changer transitions 0/96 dead transitions. [2024-11-19 13:47:45,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 96 transitions, 370 flow [2024-11-19 13:47:45,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 13:47:45,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 13:47:45,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 175 transitions. [2024-11-19 13:47:45,011 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7028112449799196 [2024-11-19 13:47:45,011 INFO L175 Difference]: Start difference. First operand has 90 places, 89 transitions, 274 flow. Second operand 3 states and 175 transitions. [2024-11-19 13:47:45,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 96 transitions, 370 flow [2024-11-19 13:47:45,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 96 transitions, 331 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-11-19 13:47:45,014 INFO L231 Difference]: Finished difference. Result has 74 places, 75 transitions, 167 flow [2024-11-19 13:47:45,014 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=167, PETRI_PLACES=74, PETRI_TRANSITIONS=75} [2024-11-19 13:47:45,015 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, -3 predicate places. [2024-11-19 13:47:45,015 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 75 transitions, 167 flow [2024-11-19 13:47:45,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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) [2024-11-19 13:47:45,015 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:45,015 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:45,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 13:47:45,015 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-19 13:47:45,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:45,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1302839221, now seen corresponding path program 1 times [2024-11-19 13:47:45,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:45,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056380738] [2024-11-19 13:47:45,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:45,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:45,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:45,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:45,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:45,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056380738] [2024-11-19 13:47:45,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056380738] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:45,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:47:45,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:47:45,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631964747] [2024-11-19 13:47:45,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:45,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:47:45,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:45,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:47:45,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:47:45,244 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 83 [2024-11-19 13:47:45,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 75 transitions, 167 flow. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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) [2024-11-19 13:47:45,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:45,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 83 [2024-11-19 13:47:45,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:46,013 INFO L124 PetriNetUnfolderBase]: 1890/4150 cut-off events. [2024-11-19 13:47:46,013 INFO L125 PetriNetUnfolderBase]: For 190/190 co-relation queries the response was YES. [2024-11-19 13:47:46,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7403 conditions, 4150 events. 1890/4150 cut-off events. For 190/190 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 27021 event pairs, 949 based on Foata normal form. 138/3770 useless extension candidates. Maximal degree in co-relation 7398. Up to 1977 conditions per place. [2024-11-19 13:47:46,032 INFO L140 encePairwiseOnDemand]: 77/83 looper letters, 112 selfloop transitions, 3 changer transitions 0/143 dead transitions. [2024-11-19 13:47:46,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 143 transitions, 550 flow [2024-11-19 13:47:46,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:47:46,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:47:46,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 251 transitions. [2024-11-19 13:47:46,033 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7560240963855421 [2024-11-19 13:47:46,034 INFO L175 Difference]: Start difference. First operand has 74 places, 75 transitions, 167 flow. Second operand 4 states and 251 transitions. [2024-11-19 13:47:46,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 143 transitions, 550 flow [2024-11-19 13:47:46,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 143 transitions, 544 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 13:47:46,038 INFO L231 Difference]: Finished difference. Result has 78 places, 77 transitions, 188 flow [2024-11-19 13:47:46,038 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=188, PETRI_PLACES=78, PETRI_TRANSITIONS=77} [2024-11-19 13:47:46,040 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 1 predicate places. [2024-11-19 13:47:46,042 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 77 transitions, 188 flow [2024-11-19 13:47:46,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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) [2024-11-19 13:47:46,043 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:46,043 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:46,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 13:47:46,043 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-19 13:47:46,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:46,043 INFO L85 PathProgramCache]: Analyzing trace with hash -858198870, now seen corresponding path program 1 times [2024-11-19 13:47:46,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:46,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379287145] [2024-11-19 13:47:46,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:46,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:46,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:47,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:47,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:47,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379287145] [2024-11-19 13:47:47,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379287145] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:47,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:47:47,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 13:47:47,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845700192] [2024-11-19 13:47:47,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:47,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 13:47:47,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:47,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 13:47:47,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 13:47:47,128 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 83 [2024-11-19 13:47:47,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 77 transitions, 188 flow. Second operand has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:47,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:47,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 83 [2024-11-19 13:47:47,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:47,922 INFO L124 PetriNetUnfolderBase]: 1715/3860 cut-off events. [2024-11-19 13:47:47,923 INFO L125 PetriNetUnfolderBase]: For 786/906 co-relation queries the response was YES. [2024-11-19 13:47:47,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7363 conditions, 3860 events. 1715/3860 cut-off events. For 786/906 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 25067 event pairs, 279 based on Foata normal form. 0/3418 useless extension candidates. Maximal degree in co-relation 7356. Up to 2409 conditions per place. [2024-11-19 13:47:47,947 INFO L140 encePairwiseOnDemand]: 77/83 looper letters, 74 selfloop transitions, 5 changer transitions 0/109 dead transitions. [2024-11-19 13:47:47,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 109 transitions, 464 flow [2024-11-19 13:47:47,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 13:47:47,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 13:47:47,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 251 transitions. [2024-11-19 13:47:47,948 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6048192771084338 [2024-11-19 13:47:47,948 INFO L175 Difference]: Start difference. First operand has 78 places, 77 transitions, 188 flow. Second operand 5 states and 251 transitions. [2024-11-19 13:47:47,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 109 transitions, 464 flow [2024-11-19 13:47:47,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 109 transitions, 456 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 13:47:47,950 INFO L231 Difference]: Finished difference. Result has 81 places, 76 transitions, 194 flow [2024-11-19 13:47:47,950 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=194, PETRI_PLACES=81, PETRI_TRANSITIONS=76} [2024-11-19 13:47:47,951 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 4 predicate places. [2024-11-19 13:47:47,951 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 76 transitions, 194 flow [2024-11-19 13:47:47,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:47,952 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:47,952 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:47,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 13:47:47,953 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-19 13:47:47,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:47,953 INFO L85 PathProgramCache]: Analyzing trace with hash -109803669, now seen corresponding path program 1 times [2024-11-19 13:47:47,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:47,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284787373] [2024-11-19 13:47:47,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:47,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:48,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:48,259 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:48,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:48,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284787373] [2024-11-19 13:47:48,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284787373] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:47:48,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007774633] [2024-11-19 13:47:48,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:48,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:47:48,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:47:48,264 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:47:48,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 13:47:48,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:48,750 INFO L255 TraceCheckSpWp]: Trace formula consists of 3362 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 13:47:48,759 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:47:48,828 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:48,828 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 13:47:48,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007774633] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:48,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 13:47:48,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-19 13:47:48,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131089697] [2024-11-19 13:47:48,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:48,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 13:47:48,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:48,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 13:47:48,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 13:47:48,842 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 83 [2024-11-19 13:47:48,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 76 transitions, 194 flow. Second operand has 6 states, 6 states have (on average 36.166666666666664) internal successors, (217), 6 states have internal predecessors, (217), 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) [2024-11-19 13:47:48,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:48,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 83 [2024-11-19 13:47:48,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:49,584 INFO L124 PetriNetUnfolderBase]: 1685/3664 cut-off events. [2024-11-19 13:47:49,585 INFO L125 PetriNetUnfolderBase]: For 501/501 co-relation queries the response was YES. [2024-11-19 13:47:49,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7248 conditions, 3664 events. 1685/3664 cut-off events. For 501/501 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 23199 event pairs, 96 based on Foata normal form. 70/3382 useless extension candidates. Maximal degree in co-relation 7241. Up to 1080 conditions per place. [2024-11-19 13:47:49,601 INFO L140 encePairwiseOnDemand]: 79/83 looper letters, 162 selfloop transitions, 5 changer transitions 0/195 dead transitions. [2024-11-19 13:47:49,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 195 transitions, 820 flow [2024-11-19 13:47:49,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 13:47:49,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 13:47:49,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 367 transitions. [2024-11-19 13:47:49,603 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7369477911646586 [2024-11-19 13:47:49,603 INFO L175 Difference]: Start difference. First operand has 81 places, 76 transitions, 194 flow. Second operand 6 states and 367 transitions. [2024-11-19 13:47:49,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 195 transitions, 820 flow [2024-11-19 13:47:49,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 195 transitions, 778 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 13:47:49,607 INFO L231 Difference]: Finished difference. Result has 81 places, 75 transitions, 190 flow [2024-11-19 13:47:49,607 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=190, PETRI_PLACES=81, PETRI_TRANSITIONS=75} [2024-11-19 13:47:49,608 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 4 predicate places. [2024-11-19 13:47:49,608 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 75 transitions, 190 flow [2024-11-19 13:47:49,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.166666666666664) internal successors, (217), 6 states have internal predecessors, (217), 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) [2024-11-19 13:47:49,609 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:49,609 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:49,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-19 13:47:49,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:47:49,811 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-19 13:47:49,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:49,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1606301204, now seen corresponding path program 1 times [2024-11-19 13:47:49,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:49,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780907267] [2024-11-19 13:47:49,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:49,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:50,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:53,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:53,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:53,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780907267] [2024-11-19 13:47:53,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780907267] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:53,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:47:53,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 13:47:53,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944486351] [2024-11-19 13:47:53,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:53,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 13:47:53,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:53,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 13:47:53,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 13:47:53,127 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 83 [2024-11-19 13:47:53,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 75 transitions, 190 flow. Second operand has 8 states, 8 states have (on average 30.0) internal successors, (240), 8 states have internal predecessors, (240), 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) [2024-11-19 13:47:53,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:53,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 83 [2024-11-19 13:47:53,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:54,465 INFO L124 PetriNetUnfolderBase]: 2309/4784 cut-off events. [2024-11-19 13:47:54,465 INFO L125 PetriNetUnfolderBase]: For 2033/2109 co-relation queries the response was YES. [2024-11-19 13:47:54,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9934 conditions, 4784 events. 2309/4784 cut-off events. For 2033/2109 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 30991 event pairs, 444 based on Foata normal form. 22/4274 useless extension candidates. Maximal degree in co-relation 9927. Up to 2448 conditions per place. [2024-11-19 13:47:54,501 INFO L140 encePairwiseOnDemand]: 74/83 looper letters, 134 selfloop transitions, 8 changer transitions 0/167 dead transitions. [2024-11-19 13:47:54,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 167 transitions, 845 flow [2024-11-19 13:47:54,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 13:47:54,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 13:47:54,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 378 transitions. [2024-11-19 13:47:54,507 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5060240963855421 [2024-11-19 13:47:54,507 INFO L175 Difference]: Start difference. First operand has 81 places, 75 transitions, 190 flow. Second operand 9 states and 378 transitions. [2024-11-19 13:47:54,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 167 transitions, 845 flow [2024-11-19 13:47:54,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 167 transitions, 805 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 13:47:54,514 INFO L231 Difference]: Finished difference. Result has 89 places, 78 transitions, 222 flow [2024-11-19 13:47:54,514 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=222, PETRI_PLACES=89, PETRI_TRANSITIONS=78} [2024-11-19 13:47:54,515 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 12 predicate places. [2024-11-19 13:47:54,515 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 78 transitions, 222 flow [2024-11-19 13:47:54,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 30.0) internal successors, (240), 8 states have internal predecessors, (240), 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) [2024-11-19 13:47:54,515 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:54,515 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:54,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 13:47:54,515 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-19 13:47:54,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:54,516 INFO L85 PathProgramCache]: Analyzing trace with hash 891057576, now seen corresponding path program 1 times [2024-11-19 13:47:54,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:54,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982901791] [2024-11-19 13:47:54,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:54,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:54,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:54,705 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 13:47:54,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:54,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982901791] [2024-11-19 13:47:54,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982901791] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:54,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:47:54,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:47:54,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029691223] [2024-11-19 13:47:54,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:54,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:47:54,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:54,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:47:54,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:47:54,712 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 83 [2024-11-19 13:47:54,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 78 transitions, 222 flow. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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) [2024-11-19 13:47:54,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:54,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 83 [2024-11-19 13:47:54,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:55,330 INFO L124 PetriNetUnfolderBase]: 1995/4229 cut-off events. [2024-11-19 13:47:55,331 INFO L125 PetriNetUnfolderBase]: For 1301/1355 co-relation queries the response was YES. [2024-11-19 13:47:55,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8844 conditions, 4229 events. 1995/4229 cut-off events. For 1301/1355 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 27459 event pairs, 349 based on Foata normal form. 83/3998 useless extension candidates. Maximal degree in co-relation 8835. Up to 1995 conditions per place. [2024-11-19 13:47:55,347 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 98 selfloop transitions, 6 changer transitions 6/138 dead transitions. [2024-11-19 13:47:55,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 138 transitions, 612 flow [2024-11-19 13:47:55,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:47:55,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:47:55,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 232 transitions. [2024-11-19 13:47:55,351 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6987951807228916 [2024-11-19 13:47:55,351 INFO L175 Difference]: Start difference. First operand has 89 places, 78 transitions, 222 flow. Second operand 4 states and 232 transitions. [2024-11-19 13:47:55,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 138 transitions, 612 flow [2024-11-19 13:47:55,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 138 transitions, 586 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-11-19 13:47:55,357 INFO L231 Difference]: Finished difference. Result has 87 places, 76 transitions, 222 flow [2024-11-19 13:47:55,357 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=222, PETRI_PLACES=87, PETRI_TRANSITIONS=76} [2024-11-19 13:47:55,358 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 10 predicate places. [2024-11-19 13:47:55,359 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 76 transitions, 222 flow [2024-11-19 13:47:55,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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) [2024-11-19 13:47:55,359 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:55,359 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:55,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 13:47:55,360 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-19 13:47:55,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:55,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1744274213, now seen corresponding path program 1 times [2024-11-19 13:47:55,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:55,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192362991] [2024-11-19 13:47:55,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:55,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:55,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:58,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:58,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:58,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192362991] [2024-11-19 13:47:58,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192362991] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:58,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:47:58,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 13:47:58,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708375681] [2024-11-19 13:47:58,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:58,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 13:47:58,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:58,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 13:47:58,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 13:47:58,628 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 83 [2024-11-19 13:47:58,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 76 transitions, 222 flow. Second operand has 8 states, 8 states have (on average 30.0) internal successors, (240), 8 states have internal predecessors, (240), 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) [2024-11-19 13:47:58,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:58,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 83 [2024-11-19 13:47:58,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:59,605 INFO L124 PetriNetUnfolderBase]: 2223/4634 cut-off events. [2024-11-19 13:47:59,605 INFO L125 PetriNetUnfolderBase]: For 2783/2783 co-relation queries the response was YES. [2024-11-19 13:47:59,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10216 conditions, 4634 events. 2223/4634 cut-off events. For 2783/2783 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 30242 event pairs, 444 based on Foata normal form. 22/4239 useless extension candidates. Maximal degree in co-relation 10207. Up to 2448 conditions per place. [2024-11-19 13:47:59,632 INFO L140 encePairwiseOnDemand]: 74/83 looper letters, 129 selfloop transitions, 8 changer transitions 2/164 dead transitions. [2024-11-19 13:47:59,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 164 transitions, 889 flow [2024-11-19 13:47:59,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 13:47:59,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 13:47:59,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 375 transitions. [2024-11-19 13:47:59,634 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5020080321285141 [2024-11-19 13:47:59,634 INFO L175 Difference]: Start difference. First operand has 87 places, 76 transitions, 222 flow. Second operand 9 states and 375 transitions. [2024-11-19 13:47:59,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 164 transitions, 889 flow [2024-11-19 13:47:59,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 164 transitions, 829 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 13:47:59,640 INFO L231 Difference]: Finished difference. Result has 91 places, 75 transitions, 223 flow [2024-11-19 13:47:59,640 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=223, PETRI_PLACES=91, PETRI_TRANSITIONS=75} [2024-11-19 13:47:59,641 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 14 predicate places. [2024-11-19 13:47:59,641 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 75 transitions, 223 flow [2024-11-19 13:47:59,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 30.0) internal successors, (240), 8 states have internal predecessors, (240), 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) [2024-11-19 13:47:59,642 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:59,642 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:59,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 13:47:59,642 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-19 13:47:59,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:59,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1762102033, now seen corresponding path program 1 times [2024-11-19 13:47:59,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:59,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826043573] [2024-11-19 13:47:59,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:59,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:59,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:59,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:59,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:59,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826043573] [2024-11-19 13:47:59,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826043573] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:59,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:47:59,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:47:59,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827595406] [2024-11-19 13:47:59,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:59,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:47:59,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:59,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:47:59,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:47:59,904 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 83 [2024-11-19 13:47:59,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 75 transitions, 223 flow. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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) [2024-11-19 13:47:59,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:59,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 83 [2024-11-19 13:47:59,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:00,749 INFO L124 PetriNetUnfolderBase]: 2829/5800 cut-off events. [2024-11-19 13:48:00,750 INFO L125 PetriNetUnfolderBase]: For 2554/2564 co-relation queries the response was YES. [2024-11-19 13:48:00,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12686 conditions, 5800 events. 2829/5800 cut-off events. For 2554/2564 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 39829 event pairs, 1541 based on Foata normal form. 144/5553 useless extension candidates. Maximal degree in co-relation 12676. Up to 3623 conditions per place. [2024-11-19 13:48:00,771 INFO L140 encePairwiseOnDemand]: 75/83 looper letters, 92 selfloop transitions, 3 changer transitions 0/120 dead transitions. [2024-11-19 13:48:00,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 120 transitions, 570 flow [2024-11-19 13:48:00,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:48:00,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:48:00,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 219 transitions. [2024-11-19 13:48:00,772 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6596385542168675 [2024-11-19 13:48:00,772 INFO L175 Difference]: Start difference. First operand has 91 places, 75 transitions, 223 flow. Second operand 4 states and 219 transitions. [2024-11-19 13:48:00,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 120 transitions, 570 flow [2024-11-19 13:48:00,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 120 transitions, 555 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-19 13:48:00,776 INFO L231 Difference]: Finished difference. Result has 90 places, 77 transitions, 239 flow [2024-11-19 13:48:00,776 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=239, PETRI_PLACES=90, PETRI_TRANSITIONS=77} [2024-11-19 13:48:00,776 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 13 predicate places. [2024-11-19 13:48:00,776 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 77 transitions, 239 flow [2024-11-19 13:48:00,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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) [2024-11-19 13:48:00,777 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:00,777 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:00,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 13:48:00,777 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-19 13:48:00,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:00,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1210400874, now seen corresponding path program 1 times [2024-11-19 13:48:00,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:00,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496243224] [2024-11-19 13:48:00,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:00,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:00,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:02,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:02,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:02,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496243224] [2024-11-19 13:48:02,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496243224] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:02,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:48:02,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 13:48:02,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120310878] [2024-11-19 13:48:02,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:02,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 13:48:02,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:02,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 13:48:02,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 13:48:02,873 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 83 [2024-11-19 13:48:02,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 77 transitions, 239 flow. Second operand has 8 states, 8 states have (on average 34.25) internal successors, (274), 8 states have internal predecessors, (274), 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) [2024-11-19 13:48:02,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:02,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 83 [2024-11-19 13:48:02,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:03,955 INFO L124 PetriNetUnfolderBase]: 2804/5877 cut-off events. [2024-11-19 13:48:03,955 INFO L125 PetriNetUnfolderBase]: For 2557/2623 co-relation queries the response was YES. [2024-11-19 13:48:03,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13362 conditions, 5877 events. 2804/5877 cut-off events. For 2557/2623 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 41010 event pairs, 518 based on Foata normal form. 44/5588 useless extension candidates. Maximal degree in co-relation 13349. Up to 2804 conditions per place. [2024-11-19 13:48:03,977 INFO L140 encePairwiseOnDemand]: 68/83 looper letters, 130 selfloop transitions, 13 changer transitions 2/172 dead transitions. [2024-11-19 13:48:03,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 172 transitions, 898 flow [2024-11-19 13:48:03,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 13:48:03,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 13:48:03,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 414 transitions. [2024-11-19 13:48:03,979 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5542168674698795 [2024-11-19 13:48:03,979 INFO L175 Difference]: Start difference. First operand has 90 places, 77 transitions, 239 flow. Second operand 9 states and 414 transitions. [2024-11-19 13:48:03,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 172 transitions, 898 flow [2024-11-19 13:48:03,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 172 transitions, 895 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 13:48:03,984 INFO L231 Difference]: Finished difference. Result has 100 places, 83 transitions, 305 flow [2024-11-19 13:48:03,984 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=305, PETRI_PLACES=100, PETRI_TRANSITIONS=83} [2024-11-19 13:48:03,986 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 23 predicate places. [2024-11-19 13:48:03,986 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 83 transitions, 305 flow [2024-11-19 13:48:03,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 34.25) internal successors, (274), 8 states have internal predecessors, (274), 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) [2024-11-19 13:48:03,987 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:03,987 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:03,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 13:48:03,987 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-19 13:48:03,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:03,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1785555803, now seen corresponding path program 1 times [2024-11-19 13:48:03,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:03,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845167617] [2024-11-19 13:48:03,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:03,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:04,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:04,225 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:04,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:04,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845167617] [2024-11-19 13:48:04,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845167617] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:48:04,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882875995] [2024-11-19 13:48:04,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:04,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:48:04,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:48:04,230 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:48:04,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 13:48:04,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:04,787 INFO L255 TraceCheckSpWp]: Trace formula consists of 3420 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 13:48:04,789 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:48:04,829 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:04,830 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 13:48:04,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882875995] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:04,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 13:48:04,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-19 13:48:04,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529260321] [2024-11-19 13:48:04,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:04,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 13:48:04,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:04,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 13:48:04,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-19 13:48:04,846 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 83 [2024-11-19 13:48:04,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 83 transitions, 305 flow. Second operand has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 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) [2024-11-19 13:48:04,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:04,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 83 [2024-11-19 13:48:04,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:05,707 INFO L124 PetriNetUnfolderBase]: 3093/6084 cut-off events. [2024-11-19 13:48:05,708 INFO L125 PetriNetUnfolderBase]: For 3572/3606 co-relation queries the response was YES. [2024-11-19 13:48:05,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15236 conditions, 6084 events. 3093/6084 cut-off events. For 3572/3606 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 40465 event pairs, 680 based on Foata normal form. 150/5979 useless extension candidates. Maximal degree in co-relation 15221. Up to 3349 conditions per place. [2024-11-19 13:48:05,753 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 80 selfloop transitions, 5 changer transitions 0/109 dead transitions. [2024-11-19 13:48:05,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 109 transitions, 577 flow [2024-11-19 13:48:05,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:48:05,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:48:05,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 194 transitions. [2024-11-19 13:48:05,757 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5843373493975904 [2024-11-19 13:48:05,758 INFO L175 Difference]: Start difference. First operand has 100 places, 83 transitions, 305 flow. Second operand 4 states and 194 transitions. [2024-11-19 13:48:05,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 109 transitions, 577 flow [2024-11-19 13:48:05,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 109 transitions, 565 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-19 13:48:05,775 INFO L231 Difference]: Finished difference. Result has 96 places, 81 transitions, 295 flow [2024-11-19 13:48:05,776 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=295, PETRI_PLACES=96, PETRI_TRANSITIONS=81} [2024-11-19 13:48:05,779 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 19 predicate places. [2024-11-19 13:48:05,780 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 81 transitions, 295 flow [2024-11-19 13:48:05,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 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) [2024-11-19 13:48:05,780 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:05,780 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:05,814 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 13:48:05,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-19 13:48:05,981 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-19 13:48:05,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:05,982 INFO L85 PathProgramCache]: Analyzing trace with hash 482348946, now seen corresponding path program 1 times [2024-11-19 13:48:05,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:05,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526880889] [2024-11-19 13:48:05,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:05,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:06,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:06,161 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 13:48:06,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:06,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526880889] [2024-11-19 13:48:06,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526880889] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:06,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:48:06,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:48:06,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395739592] [2024-11-19 13:48:06,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:06,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:48:06,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:06,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:48:06,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:48:06,186 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 83 [2024-11-19 13:48:06,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 81 transitions, 295 flow. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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) [2024-11-19 13:48:06,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:06,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 83 [2024-11-19 13:48:06,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:06,833 INFO L124 PetriNetUnfolderBase]: 2751/5632 cut-off events. [2024-11-19 13:48:06,834 INFO L125 PetriNetUnfolderBase]: For 3845/3865 co-relation queries the response was YES. [2024-11-19 13:48:06,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14102 conditions, 5632 events. 2751/5632 cut-off events. For 3845/3865 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 37917 event pairs, 724 based on Foata normal form. 150/5633 useless extension candidates. Maximal degree in co-relation 14086. Up to 2840 conditions per place. [2024-11-19 13:48:06,860 INFO L140 encePairwiseOnDemand]: 77/83 looper letters, 84 selfloop transitions, 6 changer transitions 0/114 dead transitions. [2024-11-19 13:48:06,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 114 transitions, 599 flow [2024-11-19 13:48:06,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:48:06,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:48:06,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 199 transitions. [2024-11-19 13:48:06,862 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5993975903614458 [2024-11-19 13:48:06,862 INFO L175 Difference]: Start difference. First operand has 96 places, 81 transitions, 295 flow. Second operand 4 states and 199 transitions. [2024-11-19 13:48:06,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 114 transitions, 599 flow [2024-11-19 13:48:06,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 114 transitions, 589 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 13:48:06,872 INFO L231 Difference]: Finished difference. Result has 95 places, 80 transitions, 297 flow [2024-11-19 13:48:06,872 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=297, PETRI_PLACES=95, PETRI_TRANSITIONS=80} [2024-11-19 13:48:06,872 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 18 predicate places. [2024-11-19 13:48:06,873 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 80 transitions, 297 flow [2024-11-19 13:48:06,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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) [2024-11-19 13:48:06,873 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:06,873 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:06,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 13:48:06,873 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-19 13:48:06,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:06,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1341447342, now seen corresponding path program 1 times [2024-11-19 13:48:06,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:06,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009680773] [2024-11-19 13:48:06,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:06,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:06,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:07,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:07,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:07,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009680773] [2024-11-19 13:48:07,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009680773] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:07,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:48:07,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:48:07,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828792170] [2024-11-19 13:48:07,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:07,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 13:48:07,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:07,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 13:48:07,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 13:48:07,140 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 83 [2024-11-19 13:48:07,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 80 transitions, 297 flow. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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) [2024-11-19 13:48:07,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:07,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 83 [2024-11-19 13:48:07,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:07,617 INFO L124 PetriNetUnfolderBase]: 1748/3956 cut-off events. [2024-11-19 13:48:07,617 INFO L125 PetriNetUnfolderBase]: For 3755/3755 co-relation queries the response was YES. [2024-11-19 13:48:07,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10266 conditions, 3956 events. 1748/3956 cut-off events. For 3755/3755 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 25783 event pairs, 514 based on Foata normal form. 170/4045 useless extension candidates. Maximal degree in co-relation 10250. Up to 1956 conditions per place. [2024-11-19 13:48:07,638 INFO L140 encePairwiseOnDemand]: 77/83 looper letters, 63 selfloop transitions, 6 changer transitions 0/95 dead transitions. [2024-11-19 13:48:07,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 95 transitions, 508 flow [2024-11-19 13:48:07,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 13:48:07,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 13:48:07,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 165 transitions. [2024-11-19 13:48:07,640 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6626506024096386 [2024-11-19 13:48:07,640 INFO L175 Difference]: Start difference. First operand has 95 places, 80 transitions, 297 flow. Second operand 3 states and 165 transitions. [2024-11-19 13:48:07,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 95 transitions, 508 flow [2024-11-19 13:48:07,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 95 transitions, 489 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-19 13:48:07,647 INFO L231 Difference]: Finished difference. Result has 95 places, 78 transitions, 285 flow [2024-11-19 13:48:07,647 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=285, PETRI_PLACES=95, PETRI_TRANSITIONS=78} [2024-11-19 13:48:07,647 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 18 predicate places. [2024-11-19 13:48:07,647 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 78 transitions, 285 flow [2024-11-19 13:48:07,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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) [2024-11-19 13:48:07,648 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:07,648 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:07,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 13:48:07,648 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-19 13:48:07,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:07,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1751876768, now seen corresponding path program 1 times [2024-11-19 13:48:07,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:07,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206675945] [2024-11-19 13:48:07,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:07,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:07,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:09,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:09,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:09,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206675945] [2024-11-19 13:48:09,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206675945] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:09,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:48:09,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 13:48:09,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718698398] [2024-11-19 13:48:09,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:09,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 13:48:09,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:09,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 13:48:09,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 13:48:09,520 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 83 [2024-11-19 13:48:09,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 78 transitions, 285 flow. Second operand has 8 states, 8 states have (on average 35.125) internal successors, (281), 8 states have internal predecessors, (281), 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) [2024-11-19 13:48:09,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:09,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 83 [2024-11-19 13:48:09,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:10,367 INFO L124 PetriNetUnfolderBase]: 1760/3861 cut-off events. [2024-11-19 13:48:10,368 INFO L125 PetriNetUnfolderBase]: For 3186/3188 co-relation queries the response was YES. [2024-11-19 13:48:10,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10264 conditions, 3861 events. 1760/3861 cut-off events. For 3186/3188 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 24305 event pairs, 308 based on Foata normal form. 36/3771 useless extension candidates. Maximal degree in co-relation 10247. Up to 1776 conditions per place. [2024-11-19 13:48:10,391 INFO L140 encePairwiseOnDemand]: 73/83 looper letters, 108 selfloop transitions, 9 changer transitions 2/143 dead transitions. [2024-11-19 13:48:10,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 143 transitions, 818 flow [2024-11-19 13:48:10,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 13:48:10,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 13:48:10,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 356 transitions. [2024-11-19 13:48:10,393 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.536144578313253 [2024-11-19 13:48:10,393 INFO L175 Difference]: Start difference. First operand has 95 places, 78 transitions, 285 flow. Second operand 8 states and 356 transitions. [2024-11-19 13:48:10,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 143 transitions, 818 flow [2024-11-19 13:48:10,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 143 transitions, 802 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 13:48:10,403 INFO L231 Difference]: Finished difference. Result has 100 places, 77 transitions, 289 flow [2024-11-19 13:48:10,403 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=289, PETRI_PLACES=100, PETRI_TRANSITIONS=77} [2024-11-19 13:48:10,403 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 23 predicate places. [2024-11-19 13:48:10,404 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 77 transitions, 289 flow [2024-11-19 13:48:10,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 35.125) internal successors, (281), 8 states have internal predecessors, (281), 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) [2024-11-19 13:48:10,404 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:10,404 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:10,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 13:48:10,404 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-19 13:48:10,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:10,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1275965780, now seen corresponding path program 1 times [2024-11-19 13:48:10,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:10,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229627923] [2024-11-19 13:48:10,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:10,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:10,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:14,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:14,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:14,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229627923] [2024-11-19 13:48:14,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229627923] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:14,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:48:14,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 13:48:14,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908277867] [2024-11-19 13:48:14,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:14,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 13:48:14,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:14,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 13:48:14,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-19 13:48:14,351 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 83 [2024-11-19 13:48:14,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 77 transitions, 289 flow. Second operand has 11 states, 11 states have (on average 27.454545454545453) internal successors, (302), 11 states have internal predecessors, (302), 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) [2024-11-19 13:48:14,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:14,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 83 [2024-11-19 13:48:14,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand