./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-difference-det.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/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/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-difference-det.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 38e3acb82ec05e672eff9207911c10948d6c695f982992ce82b68981a799bba7 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 12:42:09,287 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 12:42:09,376 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-13 12:42:09,396 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 12:42:09,397 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 12:42:09,428 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 12:42:09,430 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 12:42:09,431 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 12:42:09,431 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 12:42:09,433 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 12:42:09,433 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 12:42:09,434 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 12:42:09,434 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 12:42:09,435 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 12:42:09,435 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 12:42:09,437 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 12:42:09,437 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 12:42:09,438 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 12:42:09,438 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 12:42:09,438 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 12:42:09,438 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-13 12:42:09,441 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-13 12:42:09,442 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-13 12:42:09,442 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 12:42:09,442 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-13 12:42:09,442 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 12:42:09,443 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 12:42:09,443 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 12:42:09,443 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 12:42:09,443 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 12:42:09,444 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 12:42:09,444 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 12:42:09,444 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 12:42:09,444 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:42:09,444 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 12:42:09,445 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 12:42:09,445 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 12:42:09,445 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 12:42:09,446 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 12:42:09,446 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 12:42:09,447 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 12:42:09,448 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 12:42:09,448 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 38e3acb82ec05e672eff9207911c10948d6c695f982992ce82b68981a799bba7 [2024-10-13 12:42:09,736 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 12:42:09,763 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 12:42:09,767 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 12:42:09,768 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 12:42:09,771 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 12:42:09,773 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-difference-det.wvr.c [2024-10-13 12:42:11,305 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 12:42:11,541 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 12:42:11,542 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-difference-det.wvr.c [2024-10-13 12:42:11,557 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e1ed5912/ed15d973f2654454b759f27be203f82b/FLAG98cacc9dd [2024-10-13 12:42:11,893 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e1ed5912/ed15d973f2654454b759f27be203f82b [2024-10-13 12:42:11,896 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 12:42:11,897 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 12:42:11,899 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 12:42:11,899 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 12:42:11,905 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 12:42:11,906 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:42:11" (1/1) ... [2024-10-13 12:42:11,907 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b956433 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:11, skipping insertion in model container [2024-10-13 12:42:11,907 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:42:11" (1/1) ... [2024-10-13 12:42:11,933 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 12:42:12,157 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:42:12,171 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 12:42:12,200 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:42:12,221 INFO L204 MainTranslator]: Completed translation [2024-10-13 12:42:12,222 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:12 WrapperNode [2024-10-13 12:42:12,223 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 12:42:12,224 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 12:42:12,224 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 12:42:12,224 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 12:42:12,231 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:12" (1/1) ... [2024-10-13 12:42:12,240 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:12" (1/1) ... [2024-10-13 12:42:12,265 INFO L138 Inliner]: procedures = 22, calls = 22, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 103 [2024-10-13 12:42:12,265 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 12:42:12,266 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 12:42:12,266 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 12:42:12,266 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 12:42:12,277 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:12" (1/1) ... [2024-10-13 12:42:12,277 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:12" (1/1) ... [2024-10-13 12:42:12,284 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:12" (1/1) ... [2024-10-13 12:42:12,307 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-13 12:42:12,307 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:12" (1/1) ... [2024-10-13 12:42:12,307 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:12" (1/1) ... [2024-10-13 12:42:12,314 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:12" (1/1) ... [2024-10-13 12:42:12,318 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:12" (1/1) ... [2024-10-13 12:42:12,320 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:12" (1/1) ... [2024-10-13 12:42:12,321 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:12" (1/1) ... [2024-10-13 12:42:12,323 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 12:42:12,324 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 12:42:12,324 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 12:42:12,324 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 12:42:12,325 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:12" (1/1) ... [2024-10-13 12:42:12,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:42:12,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:42:12,360 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) [2024-10-13 12:42:12,362 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 [2024-10-13 12:42:12,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 12:42:12,410 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 12:42:12,410 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 12:42:12,411 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 12:42:12,411 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 12:42:12,411 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-13 12:42:12,411 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-13 12:42:12,411 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-10-13 12:42:12,411 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-10-13 12:42:12,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 12:42:12,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-13 12:42:12,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-13 12:42:12,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 12:42:12,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 12:42:12,416 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 12:42:12,509 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 12:42:12,514 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 12:42:12,742 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 12:42:12,742 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 12:42:12,892 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 12:42:12,893 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-13 12:42:12,893 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:42:12 BoogieIcfgContainer [2024-10-13 12:42:12,893 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 12:42:12,897 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 12:42:12,898 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 12:42:12,901 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 12:42:12,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:42:11" (1/3) ... [2024-10-13 12:42:12,903 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16b6075f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:42:12, skipping insertion in model container [2024-10-13 12:42:12,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:12" (2/3) ... [2024-10-13 12:42:12,904 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16b6075f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:42:12, skipping insertion in model container [2024-10-13 12:42:12,904 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:42:12" (3/3) ... [2024-10-13 12:42:12,905 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-difference-det.wvr.c [2024-10-13 12:42:12,939 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 12:42:12,939 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-13 12:42:12,939 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 12:42:13,029 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-10-13 12:42:13,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 42 transitions, 112 flow [2024-10-13 12:42:13,096 INFO L124 PetriNetUnfolderBase]: 4/38 cut-off events. [2024-10-13 12:42:13,096 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-13 12:42:13,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 38 events. 4/38 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 54 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-10-13 12:42:13,100 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 42 transitions, 112 flow [2024-10-13 12:42:13,105 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 37 transitions, 98 flow [2024-10-13 12:42:13,115 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 12:42:13,122 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=None, 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;@5b032d48, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 12:42:13,123 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-10-13 12:42:13,139 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 12:42:13,139 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2024-10-13 12:42:13,139 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-13 12:42:13,140 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:42:13,140 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] [2024-10-13 12:42:13,141 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-13 12:42:13,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:42:13,148 INFO L85 PathProgramCache]: Analyzing trace with hash 761883615, now seen corresponding path program 1 times [2024-10-13 12:42:13,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:42:13,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335773189] [2024-10-13 12:42:13,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:42:13,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:42:13,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:42:13,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:13,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:42:13,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335773189] [2024-10-13 12:42:13,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335773189] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:42:13,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:42:13,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 12:42:13,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056437325] [2024-10-13 12:42:13,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:42:13,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:42:13,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:42:13,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:42:13,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:42:13,619 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-10-13 12:42:13,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-10-13 12:42:13,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:42:13,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-10-13 12:42:13,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:42:14,226 INFO L124 PetriNetUnfolderBase]: 3331/4539 cut-off events. [2024-10-13 12:42:14,226 INFO L125 PetriNetUnfolderBase]: For 339/339 co-relation queries the response was YES. [2024-10-13 12:42:14,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9282 conditions, 4539 events. 3331/4539 cut-off events. For 339/339 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 19502 event pairs, 587 based on Foata normal form. 2/4501 useless extension candidates. Maximal degree in co-relation 8232. Up to 3534 conditions per place. [2024-10-13 12:42:14,279 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 47 selfloop transitions, 5 changer transitions 1/58 dead transitions. [2024-10-13 12:42:14,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 58 transitions, 267 flow [2024-10-13 12:42:14,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:42:14,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:42:14,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2024-10-13 12:42:14,293 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6746031746031746 [2024-10-13 12:42:14,295 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 98 flow. Second operand 3 states and 85 transitions. [2024-10-13 12:42:14,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 58 transitions, 267 flow [2024-10-13 12:42:14,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 58 transitions, 237 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-10-13 12:42:14,311 INFO L231 Difference]: Finished difference. Result has 39 places, 39 transitions, 111 flow [2024-10-13 12:42:14,313 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=111, PETRI_PLACES=39, PETRI_TRANSITIONS=39} [2024-10-13 12:42:14,318 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, -7 predicate places. [2024-10-13 12:42:14,319 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 39 transitions, 111 flow [2024-10-13 12:42:14,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-10-13 12:42:14,320 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:42:14,320 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] [2024-10-13 12:42:14,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 12:42:14,321 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-13 12:42:14,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:42:14,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1153886800, now seen corresponding path program 1 times [2024-10-13 12:42:14,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:42:14,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121060551] [2024-10-13 12:42:14,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:42:14,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:42:14,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:42:14,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:14,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:42:14,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121060551] [2024-10-13 12:42:14,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121060551] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:42:14,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:42:14,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 12:42:14,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483511157] [2024-10-13 12:42:14,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:42:14,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:42:14,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:42:14,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:42:14,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:42:14,547 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-10-13 12:42:14,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 39 transitions, 111 flow. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2024-10-13 12:42:14,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:42:14,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-10-13 12:42:14,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:42:15,362 INFO L124 PetriNetUnfolderBase]: 6572/8811 cut-off events. [2024-10-13 12:42:15,363 INFO L125 PetriNetUnfolderBase]: For 1451/1463 co-relation queries the response was YES. [2024-10-13 12:42:15,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20003 conditions, 8811 events. 6572/8811 cut-off events. For 1451/1463 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 42947 event pairs, 2102 based on Foata normal form. 100/8377 useless extension candidates. Maximal degree in co-relation 3473. Up to 4936 conditions per place. [2024-10-13 12:42:15,428 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 95 selfloop transitions, 7 changer transitions 0/106 dead transitions. [2024-10-13 12:42:15,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 106 transitions, 508 flow [2024-10-13 12:42:15,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:42:15,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:42:15,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 134 transitions. [2024-10-13 12:42:15,431 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.638095238095238 [2024-10-13 12:42:15,432 INFO L175 Difference]: Start difference. First operand has 39 places, 39 transitions, 111 flow. Second operand 5 states and 134 transitions. [2024-10-13 12:42:15,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 106 transitions, 508 flow [2024-10-13 12:42:15,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 106 transitions, 493 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 12:42:15,438 INFO L231 Difference]: Finished difference. Result has 45 places, 45 transitions, 154 flow [2024-10-13 12:42:15,438 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=154, PETRI_PLACES=45, PETRI_TRANSITIONS=45} [2024-10-13 12:42:15,439 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, -1 predicate places. [2024-10-13 12:42:15,439 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 45 transitions, 154 flow [2024-10-13 12:42:15,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2024-10-13 12:42:15,439 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:42:15,440 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] [2024-10-13 12:42:15,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 12:42:15,441 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-13 12:42:15,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:42:15,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1888282566, now seen corresponding path program 2 times [2024-10-13 12:42:15,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:42:15,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292514170] [2024-10-13 12:42:15,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:42:15,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:42:15,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:42:15,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:15,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:42:15,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292514170] [2024-10-13 12:42:15,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292514170] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:42:15,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227103974] [2024-10-13 12:42:15,577 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 12:42:15,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:42:15,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:42:15,581 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) [2024-10-13 12:42:15,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 12:42:15,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 12:42:15,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:42:15,709 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 12:42:15,714 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:42:15,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:15,795 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:42:15,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:15,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227103974] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:42:15,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:42:15,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-10-13 12:42:15,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270337200] [2024-10-13 12:42:15,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:42:15,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 12:42:15,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:42:15,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 12:42:15,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-10-13 12:42:15,866 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-10-13 12:42:15,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 45 transitions, 154 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 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) [2024-10-13 12:42:15,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:42:15,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-10-13 12:42:15,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:42:17,569 INFO L124 PetriNetUnfolderBase]: 11011/14442 cut-off events. [2024-10-13 12:42:17,569 INFO L125 PetriNetUnfolderBase]: For 4717/4717 co-relation queries the response was YES. [2024-10-13 12:42:17,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37338 conditions, 14442 events. 11011/14442 cut-off events. For 4717/4717 co-relation queries the response was YES. Maximal size of possible extension queue 641. Compared 70891 event pairs, 1013 based on Foata normal form. 180/14250 useless extension candidates. Maximal degree in co-relation 25230. Up to 3147 conditions per place. [2024-10-13 12:42:17,678 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 232 selfloop transitions, 28 changer transitions 0/263 dead transitions. [2024-10-13 12:42:17,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 263 transitions, 1299 flow [2024-10-13 12:42:17,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 12:42:17,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-13 12:42:17,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 353 transitions. [2024-10-13 12:42:17,684 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6003401360544217 [2024-10-13 12:42:17,684 INFO L175 Difference]: Start difference. First operand has 45 places, 45 transitions, 154 flow. Second operand 14 states and 353 transitions. [2024-10-13 12:42:17,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 263 transitions, 1299 flow [2024-10-13 12:42:17,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 263 transitions, 1299 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 12:42:17,702 INFO L231 Difference]: Finished difference. Result has 62 places, 66 transitions, 317 flow [2024-10-13 12:42:17,702 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=317, PETRI_PLACES=62, PETRI_TRANSITIONS=66} [2024-10-13 12:42:17,703 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 16 predicate places. [2024-10-13 12:42:17,703 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 66 transitions, 317 flow [2024-10-13 12:42:17,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 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) [2024-10-13 12:42:17,703 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:42:17,703 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] [2024-10-13 12:42:17,723 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 12:42:17,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:42:17,905 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-13 12:42:17,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:42:17,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1201323686, now seen corresponding path program 3 times [2024-10-13 12:42:17,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:42:17,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806219880] [2024-10-13 12:42:17,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:42:17,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:42:17,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:42:18,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:18,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:42:18,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806219880] [2024-10-13 12:42:18,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806219880] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:42:18,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:42:18,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 12:42:18,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965419582] [2024-10-13 12:42:18,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:42:18,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:42:18,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:42:18,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:42:18,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:42:18,013 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-10-13 12:42:18,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 66 transitions, 317 flow. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2024-10-13 12:42:18,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:42:18,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-10-13 12:42:18,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:42:19,978 INFO L124 PetriNetUnfolderBase]: 14457/19517 cut-off events. [2024-10-13 12:42:19,978 INFO L125 PetriNetUnfolderBase]: For 25746/25878 co-relation queries the response was YES. [2024-10-13 12:42:20,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58178 conditions, 19517 events. 14457/19517 cut-off events. For 25746/25878 co-relation queries the response was YES. Maximal size of possible extension queue 837. Compared 105581 event pairs, 4007 based on Foata normal form. 60/19330 useless extension candidates. Maximal degree in co-relation 42613. Up to 9113 conditions per place. [2024-10-13 12:42:20,127 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 117 selfloop transitions, 15 changer transitions 0/143 dead transitions. [2024-10-13 12:42:20,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 143 transitions, 902 flow [2024-10-13 12:42:20,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:42:20,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:42:20,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2024-10-13 12:42:20,130 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6238095238095238 [2024-10-13 12:42:20,130 INFO L175 Difference]: Start difference. First operand has 62 places, 66 transitions, 317 flow. Second operand 5 states and 131 transitions. [2024-10-13 12:42:20,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 143 transitions, 902 flow [2024-10-13 12:42:20,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 143 transitions, 843 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-10-13 12:42:20,469 INFO L231 Difference]: Finished difference. Result has 66 places, 74 transitions, 392 flow [2024-10-13 12:42:20,470 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=392, PETRI_PLACES=66, PETRI_TRANSITIONS=74} [2024-10-13 12:42:20,470 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 20 predicate places. [2024-10-13 12:42:20,471 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 74 transitions, 392 flow [2024-10-13 12:42:20,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2024-10-13 12:42:20,471 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:42:20,471 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] [2024-10-13 12:42:20,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 12:42:20,472 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-13 12:42:20,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:42:20,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1338683045, now seen corresponding path program 1 times [2024-10-13 12:42:20,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:42:20,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956497634] [2024-10-13 12:42:20,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:42:20,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:42:20,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:42:20,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:20,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:42:20,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956497634] [2024-10-13 12:42:20,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956497634] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:42:20,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:42:20,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 12:42:20,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77408523] [2024-10-13 12:42:20,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:42:20,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:42:20,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:42:20,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:42:20,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:42:20,520 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-10-13 12:42:20,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 74 transitions, 392 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2024-10-13 12:42:20,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:42:20,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-10-13 12:42:20,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:42:21,494 INFO L124 PetriNetUnfolderBase]: 9905/13694 cut-off events. [2024-10-13 12:42:21,494 INFO L125 PetriNetUnfolderBase]: For 23304/23888 co-relation queries the response was YES. [2024-10-13 12:42:21,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42663 conditions, 13694 events. 9905/13694 cut-off events. For 23304/23888 co-relation queries the response was YES. Maximal size of possible extension queue 648. Compared 73981 event pairs, 3463 based on Foata normal form. 413/13962 useless extension candidates. Maximal degree in co-relation 30349. Up to 8421 conditions per place. [2024-10-13 12:42:21,594 INFO L140 encePairwiseOnDemand]: 39/42 looper letters, 82 selfloop transitions, 3 changer transitions 0/99 dead transitions. [2024-10-13 12:42:21,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 99 transitions, 666 flow [2024-10-13 12:42:21,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:42:21,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:42:21,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2024-10-13 12:42:21,597 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6746031746031746 [2024-10-13 12:42:21,597 INFO L175 Difference]: Start difference. First operand has 66 places, 74 transitions, 392 flow. Second operand 3 states and 85 transitions. [2024-10-13 12:42:21,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 99 transitions, 666 flow [2024-10-13 12:42:21,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 99 transitions, 639 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-10-13 12:42:21,774 INFO L231 Difference]: Finished difference. Result has 68 places, 74 transitions, 387 flow [2024-10-13 12:42:21,776 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=387, PETRI_PLACES=68, PETRI_TRANSITIONS=74} [2024-10-13 12:42:21,777 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 22 predicate places. [2024-10-13 12:42:21,777 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 74 transitions, 387 flow [2024-10-13 12:42:21,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2024-10-13 12:42:21,778 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:42:21,778 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] [2024-10-13 12:42:21,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 12:42:21,778 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-13 12:42:21,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:42:21,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1339020764, now seen corresponding path program 4 times [2024-10-13 12:42:21,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:42:21,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817455071] [2024-10-13 12:42:21,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:42:21,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:42:21,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:42:21,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:21,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:42:21,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817455071] [2024-10-13 12:42:21,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817455071] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:42:21,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:42:21,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 12:42:21,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929591058] [2024-10-13 12:42:21,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:42:21,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:42:21,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:42:21,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:42:21,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:42:21,885 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-10-13 12:42:21,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 74 transitions, 387 flow. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2024-10-13 12:42:21,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:42:21,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-10-13 12:42:21,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:42:23,171 INFO L124 PetriNetUnfolderBase]: 13567/18460 cut-off events. [2024-10-13 12:42:23,171 INFO L125 PetriNetUnfolderBase]: For 28517/28677 co-relation queries the response was YES. [2024-10-13 12:42:23,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57802 conditions, 18460 events. 13567/18460 cut-off events. For 28517/28677 co-relation queries the response was YES. Maximal size of possible extension queue 829. Compared 100589 event pairs, 5068 based on Foata normal form. 42/18257 useless extension candidates. Maximal degree in co-relation 46209. Up to 11926 conditions per place. [2024-10-13 12:42:23,278 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 104 selfloop transitions, 21 changer transitions 0/136 dead transitions. [2024-10-13 12:42:23,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 136 transitions, 896 flow [2024-10-13 12:42:23,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:42:23,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:42:23,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2024-10-13 12:42:23,281 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2024-10-13 12:42:23,281 INFO L175 Difference]: Start difference. First operand has 68 places, 74 transitions, 387 flow. Second operand 5 states and 132 transitions. [2024-10-13 12:42:23,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 136 transitions, 896 flow [2024-10-13 12:42:23,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 136 transitions, 889 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 12:42:23,396 INFO L231 Difference]: Finished difference. Result has 74 places, 84 transitions, 539 flow [2024-10-13 12:42:23,396 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=539, PETRI_PLACES=74, PETRI_TRANSITIONS=84} [2024-10-13 12:42:23,397 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 28 predicate places. [2024-10-13 12:42:23,397 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 84 transitions, 539 flow [2024-10-13 12:42:23,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2024-10-13 12:42:23,397 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:42:23,397 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] [2024-10-13 12:42:23,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 12:42:23,397 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-13 12:42:23,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:42:23,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1393481940, now seen corresponding path program 5 times [2024-10-13 12:42:23,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:42:23,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662137574] [2024-10-13 12:42:23,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:42:23,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:42:23,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:42:23,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:23,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:42:23,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662137574] [2024-10-13 12:42:23,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662137574] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:42:23,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534162434] [2024-10-13 12:42:23,503 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 12:42:23,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:42:23,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:42:23,505 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) [2024-10-13 12:42:23,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 12:42:23,581 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 12:42:23,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:42:23,582 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 12:42:23,584 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:42:23,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:23,645 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:42:23,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:23,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534162434] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:42:23,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:42:23,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-10-13 12:42:23,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396230897] [2024-10-13 12:42:23,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:42:23,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 12:42:23,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:42:23,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 12:42:23,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-13 12:42:23,692 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-10-13 12:42:23,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 84 transitions, 539 flow. Second operand has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 11 states have internal predecessors, (128), 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) [2024-10-13 12:42:23,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:42:23,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-10-13 12:42:23,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:42:25,519 INFO L124 PetriNetUnfolderBase]: 16753/22207 cut-off events. [2024-10-13 12:42:25,519 INFO L125 PetriNetUnfolderBase]: For 44168/44171 co-relation queries the response was YES. [2024-10-13 12:42:25,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71952 conditions, 22207 events. 16753/22207 cut-off events. For 44168/44171 co-relation queries the response was YES. Maximal size of possible extension queue 914. Compared 113928 event pairs, 3611 based on Foata normal form. 334/22448 useless extension candidates. Maximal degree in co-relation 59457. Up to 7706 conditions per place. [2024-10-13 12:42:25,642 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 158 selfloop transitions, 46 changer transitions 0/207 dead transitions. [2024-10-13 12:42:25,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 207 transitions, 1450 flow [2024-10-13 12:42:25,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 12:42:25,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-13 12:42:25,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2024-10-13 12:42:25,644 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6160714285714286 [2024-10-13 12:42:25,644 INFO L175 Difference]: Start difference. First operand has 74 places, 84 transitions, 539 flow. Second operand 8 states and 207 transitions. [2024-10-13 12:42:25,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 207 transitions, 1450 flow [2024-10-13 12:42:25,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 207 transitions, 1415 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-10-13 12:42:25,790 INFO L231 Difference]: Finished difference. Result has 85 places, 103 transitions, 809 flow [2024-10-13 12:42:25,791 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=809, PETRI_PLACES=85, PETRI_TRANSITIONS=103} [2024-10-13 12:42:25,791 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 39 predicate places. [2024-10-13 12:42:25,791 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 103 transitions, 809 flow [2024-10-13 12:42:25,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 11 states have internal predecessors, (128), 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) [2024-10-13 12:42:25,792 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:42:25,792 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] [2024-10-13 12:42:25,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-13 12:42:25,992 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,SelfDestructingSolverStorable6 [2024-10-13 12:42:25,993 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-13 12:42:25,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:42:25,994 INFO L85 PathProgramCache]: Analyzing trace with hash 2098246889, now seen corresponding path program 1 times [2024-10-13 12:42:25,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:42:25,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033575724] [2024-10-13 12:42:25,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:42:25,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:42:26,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:42:26,059 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:26,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:42:26,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033575724] [2024-10-13 12:42:26,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033575724] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:42:26,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:42:26,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 12:42:26,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618358793] [2024-10-13 12:42:26,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:42:26,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:42:26,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:42:26,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:42:26,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:42:26,064 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-10-13 12:42:26,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 103 transitions, 809 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2024-10-13 12:42:26,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:42:26,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-10-13 12:42:26,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:42:27,091 INFO L124 PetriNetUnfolderBase]: 9738/13561 cut-off events. [2024-10-13 12:42:27,091 INFO L125 PetriNetUnfolderBase]: For 39006/39674 co-relation queries the response was YES. [2024-10-13 12:42:27,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48886 conditions, 13561 events. 9738/13561 cut-off events. For 39006/39674 co-relation queries the response was YES. Maximal size of possible extension queue 611. Compared 73551 event pairs, 2815 based on Foata normal form. 333/13773 useless extension candidates. Maximal degree in co-relation 41126. Up to 7769 conditions per place. [2024-10-13 12:42:27,182 INFO L140 encePairwiseOnDemand]: 39/42 looper letters, 101 selfloop transitions, 3 changer transitions 3/131 dead transitions. [2024-10-13 12:42:27,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 131 transitions, 1192 flow [2024-10-13 12:42:27,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:42:27,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:42:27,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-10-13 12:42:27,183 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-10-13 12:42:27,183 INFO L175 Difference]: Start difference. First operand has 85 places, 103 transitions, 809 flow. Second operand 3 states and 81 transitions. [2024-10-13 12:42:27,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 131 transitions, 1192 flow [2024-10-13 12:42:27,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 131 transitions, 1145 flow, removed 14 selfloop flow, removed 1 redundant places. [2024-10-13 12:42:27,290 INFO L231 Difference]: Finished difference. Result has 87 places, 100 transitions, 743 flow [2024-10-13 12:42:27,290 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=758, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=743, PETRI_PLACES=87, PETRI_TRANSITIONS=100} [2024-10-13 12:42:27,291 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 41 predicate places. [2024-10-13 12:42:27,291 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 100 transitions, 743 flow [2024-10-13 12:42:27,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2024-10-13 12:42:27,292 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:42:27,292 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] [2024-10-13 12:42:27,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 12:42:27,292 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-13 12:42:27,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:42:27,293 INFO L85 PathProgramCache]: Analyzing trace with hash 2146662114, now seen corresponding path program 1 times [2024-10-13 12:42:27,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:42:27,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286884916] [2024-10-13 12:42:27,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:42:27,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:42:27,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:42:27,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:27,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:42:27,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286884916] [2024-10-13 12:42:27,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286884916] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:42:27,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:42:27,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 12:42:27,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287736044] [2024-10-13 12:42:27,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:42:27,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:42:27,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:42:27,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:42:27,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:42:27,383 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-10-13 12:42:27,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 100 transitions, 743 flow. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2024-10-13 12:42:27,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:42:27,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-10-13 12:42:27,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:42:28,719 INFO L124 PetriNetUnfolderBase]: 11261/15275 cut-off events. [2024-10-13 12:42:28,720 INFO L125 PetriNetUnfolderBase]: For 35782/36264 co-relation queries the response was YES. [2024-10-13 12:42:28,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55459 conditions, 15275 events. 11261/15275 cut-off events. For 35782/36264 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 79585 event pairs, 4036 based on Foata normal form. 36/15263 useless extension candidates. Maximal degree in co-relation 50711. Up to 8870 conditions per place. [2024-10-13 12:42:28,810 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 116 selfloop transitions, 17 changer transitions 16/156 dead transitions. [2024-10-13 12:42:28,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 156 transitions, 1263 flow [2024-10-13 12:42:28,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:42:28,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:42:28,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 133 transitions. [2024-10-13 12:42:28,811 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2024-10-13 12:42:28,811 INFO L175 Difference]: Start difference. First operand has 87 places, 100 transitions, 743 flow. Second operand 5 states and 133 transitions. [2024-10-13 12:42:28,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 156 transitions, 1263 flow [2024-10-13 12:42:28,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 156 transitions, 1251 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-13 12:42:28,928 INFO L231 Difference]: Finished difference. Result has 90 places, 100 transitions, 779 flow [2024-10-13 12:42:28,929 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=734, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=779, PETRI_PLACES=90, PETRI_TRANSITIONS=100} [2024-10-13 12:42:28,929 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 44 predicate places. [2024-10-13 12:42:28,929 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 100 transitions, 779 flow [2024-10-13 12:42:28,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2024-10-13 12:42:28,930 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:42:28,930 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] [2024-10-13 12:42:28,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-13 12:42:28,930 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-13 12:42:28,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:42:28,931 INFO L85 PathProgramCache]: Analyzing trace with hash 239244034, now seen corresponding path program 2 times [2024-10-13 12:42:28,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:42:28,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485170390] [2024-10-13 12:42:28,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:42:28,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:42:28,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:42:29,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:29,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:42:29,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485170390] [2024-10-13 12:42:29,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485170390] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:42:29,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879301840] [2024-10-13 12:42:29,004 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 12:42:29,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:42:29,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:42:29,006 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:42:29,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 12:42:29,252 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 12:42:29,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:42:29,253 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 12:42:29,254 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:42:29,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:29,289 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:42:29,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:29,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879301840] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:42:29,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:42:29,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-10-13 12:42:29,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447679489] [2024-10-13 12:42:29,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:42:29,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 12:42:29,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:42:29,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 12:42:29,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-10-13 12:42:29,335 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-10-13 12:42:29,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 100 transitions, 779 flow. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 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) [2024-10-13 12:42:29,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:42:29,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-10-13 12:42:29,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:42:31,248 INFO L124 PetriNetUnfolderBase]: 15188/20179 cut-off events. [2024-10-13 12:42:31,248 INFO L125 PetriNetUnfolderBase]: For 44277/44277 co-relation queries the response was YES. [2024-10-13 12:42:31,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72506 conditions, 20179 events. 15188/20179 cut-off events. For 44277/44277 co-relation queries the response was YES. Maximal size of possible extension queue 764. Compared 101477 event pairs, 815 based on Foata normal form. 120/20298 useless extension candidates. Maximal degree in co-relation 65336. Up to 3687 conditions per place. [2024-10-13 12:42:31,362 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 223 selfloop transitions, 80 changer transitions 2/308 dead transitions. [2024-10-13 12:42:31,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 308 transitions, 2324 flow [2024-10-13 12:42:31,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 12:42:31,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-13 12:42:31,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 333 transitions. [2024-10-13 12:42:31,365 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5663265306122449 [2024-10-13 12:42:31,365 INFO L175 Difference]: Start difference. First operand has 90 places, 100 transitions, 779 flow. Second operand 14 states and 333 transitions. [2024-10-13 12:42:31,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 308 transitions, 2324 flow [2024-10-13 12:42:31,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 308 transitions, 2269 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-10-13 12:42:31,598 INFO L231 Difference]: Finished difference. Result has 103 places, 136 transitions, 1269 flow [2024-10-13 12:42:31,599 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1269, PETRI_PLACES=103, PETRI_TRANSITIONS=136} [2024-10-13 12:42:31,599 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 57 predicate places. [2024-10-13 12:42:31,599 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 136 transitions, 1269 flow [2024-10-13 12:42:31,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 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) [2024-10-13 12:42:31,600 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:42:31,600 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] [2024-10-13 12:42:31,618 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 12:42:31,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:42:31,805 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-13 12:42:31,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:42:31,805 INFO L85 PathProgramCache]: Analyzing trace with hash 555537916, now seen corresponding path program 6 times [2024-10-13 12:42:31,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:42:31,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928305354] [2024-10-13 12:42:31,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:42:31,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:42:31,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:42:31,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:31,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:42:31,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928305354] [2024-10-13 12:42:31,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928305354] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:42:31,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:42:31,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 12:42:31,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13122706] [2024-10-13 12:42:31,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:42:31,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:42:31,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:42:31,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:42:31,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:42:31,891 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-10-13 12:42:31,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 136 transitions, 1269 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-10-13 12:42:31,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:42:31,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-10-13 12:42:31,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:42:33,470 INFO L124 PetriNetUnfolderBase]: 14924/19875 cut-off events. [2024-10-13 12:42:33,471 INFO L125 PetriNetUnfolderBase]: For 58703/58718 co-relation queries the response was YES. [2024-10-13 12:42:33,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76595 conditions, 19875 events. 14924/19875 cut-off events. For 58703/58718 co-relation queries the response was YES. Maximal size of possible extension queue 768. Compared 100934 event pairs, 5668 based on Foata normal form. 113/19977 useless extension candidates. Maximal degree in co-relation 71603. Up to 12762 conditions per place. [2024-10-13 12:42:33,603 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 144 selfloop transitions, 32 changer transitions 0/179 dead transitions. [2024-10-13 12:42:33,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 179 transitions, 1749 flow [2024-10-13 12:42:33,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:42:33,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:42:33,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-10-13 12:42:33,605 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6142857142857143 [2024-10-13 12:42:33,605 INFO L175 Difference]: Start difference. First operand has 103 places, 136 transitions, 1269 flow. Second operand 5 states and 129 transitions. [2024-10-13 12:42:33,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 179 transitions, 1749 flow [2024-10-13 12:42:34,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 179 transitions, 1619 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-10-13 12:42:34,252 INFO L231 Difference]: Finished difference. Result has 101 places, 133 transitions, 1170 flow [2024-10-13 12:42:34,252 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1106, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1170, PETRI_PLACES=101, PETRI_TRANSITIONS=133} [2024-10-13 12:42:34,253 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 55 predicate places. [2024-10-13 12:42:34,253 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 133 transitions, 1170 flow [2024-10-13 12:42:34,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-10-13 12:42:34,253 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:42:34,254 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] [2024-10-13 12:42:34,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-13 12:42:34,254 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-13 12:42:34,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:42:34,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1775846514, now seen corresponding path program 3 times [2024-10-13 12:42:34,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:42:34,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544946658] [2024-10-13 12:42:34,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:42:34,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:42:34,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:42:34,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:34,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:42:34,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544946658] [2024-10-13 12:42:34,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544946658] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:42:34,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:42:34,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 12:42:34,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587097180] [2024-10-13 12:42:34,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:42:34,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 12:42:34,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:42:34,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 12:42:34,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-10-13 12:42:34,391 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-10-13 12:42:34,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 133 transitions, 1170 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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) [2024-10-13 12:42:34,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:42:34,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-10-13 12:42:34,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:42:36,129 INFO L124 PetriNetUnfolderBase]: 15292/20360 cut-off events. [2024-10-13 12:42:36,130 INFO L125 PetriNetUnfolderBase]: For 58578/58593 co-relation queries the response was YES. [2024-10-13 12:42:36,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75830 conditions, 20360 events. 15292/20360 cut-off events. For 58578/58593 co-relation queries the response was YES. Maximal size of possible extension queue 796. Compared 103743 event pairs, 5656 based on Foata normal form. 123/20475 useless extension candidates. Maximal degree in co-relation 72633. Up to 12762 conditions per place. [2024-10-13 12:42:36,248 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 155 selfloop transitions, 40 changer transitions 0/198 dead transitions. [2024-10-13 12:42:36,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 198 transitions, 1805 flow [2024-10-13 12:42:36,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 12:42:36,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 12:42:36,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2024-10-13 12:42:36,249 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5992063492063492 [2024-10-13 12:42:36,249 INFO L175 Difference]: Start difference. First operand has 101 places, 133 transitions, 1170 flow. Second operand 6 states and 151 transitions. [2024-10-13 12:42:36,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 198 transitions, 1805 flow [2024-10-13 12:42:36,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 198 transitions, 1717 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-10-13 12:42:36,547 INFO L231 Difference]: Finished difference. Result has 103 places, 137 transitions, 1228 flow [2024-10-13 12:42:36,547 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1086, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1228, PETRI_PLACES=103, PETRI_TRANSITIONS=137} [2024-10-13 12:42:36,548 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 57 predicate places. [2024-10-13 12:42:36,550 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 137 transitions, 1228 flow [2024-10-13 12:42:36,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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) [2024-10-13 12:42:36,550 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:42:36,550 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] [2024-10-13 12:42:36,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-13 12:42:36,551 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-13 12:42:36,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:42:36,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1277745496, now seen corresponding path program 7 times [2024-10-13 12:42:36,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:42:36,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124477891] [2024-10-13 12:42:36,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:42:36,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:42:36,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:42:36,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:36,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:42:36,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124477891] [2024-10-13 12:42:36,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124477891] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:42:36,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534988173] [2024-10-13 12:42:36,621 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-13 12:42:36,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:42:36,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:42:36,623 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:42:36,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 12:42:36,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:42:36,693 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 12:42:36,694 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:42:36,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:36,747 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:42:36,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:36,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534988173] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:42:36,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:42:36,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-10-13 12:42:36,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176501330] [2024-10-13 12:42:36,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:42:36,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 12:42:36,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:42:36,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 12:42:36,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-10-13 12:42:36,796 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-10-13 12:42:36,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 137 transitions, 1228 flow. Second operand has 11 states, 11 states have (on average 12.0) internal successors, (132), 11 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) [2024-10-13 12:42:36,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:42:36,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-10-13 12:42:36,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:42:38,888 INFO L124 PetriNetUnfolderBase]: 17917/23845 cut-off events. [2024-10-13 12:42:38,889 INFO L125 PetriNetUnfolderBase]: For 59864/59864 co-relation queries the response was YES. [2024-10-13 12:42:38,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87991 conditions, 23845 events. 17917/23845 cut-off events. For 59864/59864 co-relation queries the response was YES. Maximal size of possible extension queue 954. Compared 124545 event pairs, 1377 based on Foata normal form. 143/23977 useless extension candidates. Maximal degree in co-relation 84658. Up to 4523 conditions per place. [2024-10-13 12:42:39,064 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 254 selfloop transitions, 85 changer transitions 1/343 dead transitions. [2024-10-13 12:42:39,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 343 transitions, 2706 flow [2024-10-13 12:42:39,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-13 12:42:39,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-13 12:42:39,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 372 transitions. [2024-10-13 12:42:39,067 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5904761904761905 [2024-10-13 12:42:39,067 INFO L175 Difference]: Start difference. First operand has 103 places, 137 transitions, 1228 flow. Second operand 15 states and 372 transitions. [2024-10-13 12:42:39,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 343 transitions, 2706 flow [2024-10-13 12:42:39,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 343 transitions, 2644 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-10-13 12:42:39,744 INFO L231 Difference]: Finished difference. Result has 117 places, 152 transitions, 1516 flow [2024-10-13 12:42:39,744 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1154, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1516, PETRI_PLACES=117, PETRI_TRANSITIONS=152} [2024-10-13 12:42:39,744 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 71 predicate places. [2024-10-13 12:42:39,744 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 152 transitions, 1516 flow [2024-10-13 12:42:39,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.0) internal successors, (132), 11 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) [2024-10-13 12:42:39,745 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:42:39,745 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] [2024-10-13 12:42:39,757 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-13 12:42:39,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:42:39,946 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-13 12:42:39,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:42:39,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1442137096, now seen corresponding path program 4 times [2024-10-13 12:42:39,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:42:39,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632210509] [2024-10-13 12:42:39,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:42:39,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:42:39,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:42:40,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:40,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:42:40,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632210509] [2024-10-13 12:42:40,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632210509] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:42:40,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:42:40,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 12:42:40,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708643800] [2024-10-13 12:42:40,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:42:40,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:42:40,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:42:40,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:42:40,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:42:40,018 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-10-13 12:42:40,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 152 transitions, 1516 flow. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2024-10-13 12:42:40,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:42:40,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-10-13 12:42:40,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:42:41,721 INFO L124 PetriNetUnfolderBase]: 16479/22252 cut-off events. [2024-10-13 12:42:41,722 INFO L125 PetriNetUnfolderBase]: For 77809/78145 co-relation queries the response was YES. [2024-10-13 12:42:41,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86094 conditions, 22252 events. 16479/22252 cut-off events. For 77809/78145 co-relation queries the response was YES. Maximal size of possible extension queue 966. Compared 120854 event pairs, 6553 based on Foata normal form. 39/22195 useless extension candidates. Maximal degree in co-relation 80794. Up to 14982 conditions per place. [2024-10-13 12:42:41,875 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 134 selfloop transitions, 28 changer transitions 10/196 dead transitions. [2024-10-13 12:42:41,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 196 transitions, 2004 flow [2024-10-13 12:42:41,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:42:41,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:42:41,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2024-10-13 12:42:41,876 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-10-13 12:42:41,876 INFO L175 Difference]: Start difference. First operand has 117 places, 152 transitions, 1516 flow. Second operand 5 states and 126 transitions. [2024-10-13 12:42:41,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 196 transitions, 2004 flow [2024-10-13 12:42:42,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 196 transitions, 1937 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-10-13 12:42:42,624 INFO L231 Difference]: Finished difference. Result has 116 places, 151 transitions, 1495 flow [2024-10-13 12:42:42,624 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1449, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1495, PETRI_PLACES=116, PETRI_TRANSITIONS=151} [2024-10-13 12:42:42,625 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 70 predicate places. [2024-10-13 12:42:42,625 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 151 transitions, 1495 flow [2024-10-13 12:42:42,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2024-10-13 12:42:42,625 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:42:42,627 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] [2024-10-13 12:42:42,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-13 12:42:42,627 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-13 12:42:42,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:42:42,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1829548382, now seen corresponding path program 8 times [2024-10-13 12:42:42,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:42:42,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051313652] [2024-10-13 12:42:42,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:42:42,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:42:42,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:42:42,687 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:42,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:42:42,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051313652] [2024-10-13 12:42:42,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051313652] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:42:42,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:42:42,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 12:42:42,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570055182] [2024-10-13 12:42:42,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:42:42,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:42:42,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:42:42,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:42:42,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:42:42,695 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-10-13 12:42:42,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 151 transitions, 1495 flow. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2024-10-13 12:42:42,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:42:42,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-10-13 12:42:42,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:42:44,273 INFO L124 PetriNetUnfolderBase]: 15411/21004 cut-off events. [2024-10-13 12:42:44,273 INFO L125 PetriNetUnfolderBase]: For 79873/80033 co-relation queries the response was YES. [2024-10-13 12:42:44,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82594 conditions, 21004 events. 15411/21004 cut-off events. For 79873/80033 co-relation queries the response was YES. Maximal size of possible extension queue 934. Compared 115314 event pairs, 4211 based on Foata normal form. 24/20810 useless extension candidates. Maximal degree in co-relation 77535. Up to 9513 conditions per place. [2024-10-13 12:42:44,426 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 121 selfloop transitions, 35 changer transitions 9/191 dead transitions. [2024-10-13 12:42:44,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 191 transitions, 1984 flow [2024-10-13 12:42:44,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:42:44,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:42:44,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-10-13 12:42:44,428 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5857142857142857 [2024-10-13 12:42:44,428 INFO L175 Difference]: Start difference. First operand has 116 places, 151 transitions, 1495 flow. Second operand 5 states and 123 transitions. [2024-10-13 12:42:44,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 191 transitions, 1984 flow [2024-10-13 12:42:45,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 191 transitions, 1924 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-10-13 12:42:45,015 INFO L231 Difference]: Finished difference. Result has 116 places, 150 transitions, 1503 flow [2024-10-13 12:42:45,016 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1437, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1503, PETRI_PLACES=116, PETRI_TRANSITIONS=150} [2024-10-13 12:42:45,016 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 70 predicate places. [2024-10-13 12:42:45,016 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 150 transitions, 1503 flow [2024-10-13 12:42:45,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2024-10-13 12:42:45,017 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:42:45,017 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] [2024-10-13 12:42:45,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-13 12:42:45,017 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-13 12:42:45,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:42:45,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1928174366, now seen corresponding path program 5 times [2024-10-13 12:42:45,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:42:45,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162961250] [2024-10-13 12:42:45,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:42:45,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:42:45,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:42:45,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:45,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:42:45,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162961250] [2024-10-13 12:42:45,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162961250] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:42:45,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:42:45,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 12:42:45,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288308210] [2024-10-13 12:42:45,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:42:45,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 12:42:45,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:42:45,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 12:42:45,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-13 12:42:45,285 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-10-13 12:42:45,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 150 transitions, 1503 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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) [2024-10-13 12:42:45,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:42:45,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-10-13 12:42:45,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:42:46,921 INFO L124 PetriNetUnfolderBase]: 18985/25193 cut-off events. [2024-10-13 12:42:46,922 INFO L125 PetriNetUnfolderBase]: For 85627/85630 co-relation queries the response was YES. [2024-10-13 12:42:47,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96868 conditions, 25193 events. 18985/25193 cut-off events. For 85627/85630 co-relation queries the response was YES. Maximal size of possible extension queue 1037. Compared 131051 event pairs, 4855 based on Foata normal form. 120/25294 useless extension candidates. Maximal degree in co-relation 93390. Up to 10797 conditions per place. [2024-10-13 12:42:47,107 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 169 selfloop transitions, 44 changer transitions 1/217 dead transitions. [2024-10-13 12:42:47,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 217 transitions, 2232 flow [2024-10-13 12:42:47,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 12:42:47,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 12:42:47,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2024-10-13 12:42:47,108 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5992063492063492 [2024-10-13 12:42:47,108 INFO L175 Difference]: Start difference. First operand has 116 places, 150 transitions, 1503 flow. Second operand 6 states and 151 transitions. [2024-10-13 12:42:47,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 217 transitions, 2232 flow [2024-10-13 12:42:47,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 217 transitions, 2142 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-10-13 12:42:47,958 INFO L231 Difference]: Finished difference. Result has 116 places, 155 transitions, 1583 flow [2024-10-13 12:42:47,958 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1396, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1583, PETRI_PLACES=116, PETRI_TRANSITIONS=155} [2024-10-13 12:42:47,958 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 70 predicate places. [2024-10-13 12:42:47,958 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 155 transitions, 1583 flow [2024-10-13 12:42:47,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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) [2024-10-13 12:42:47,959 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:42:47,959 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] [2024-10-13 12:42:47,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-13 12:42:47,959 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-13 12:42:47,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:42:47,959 INFO L85 PathProgramCache]: Analyzing trace with hash 969469390, now seen corresponding path program 6 times [2024-10-13 12:42:47,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:42:47,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406634585] [2024-10-13 12:42:47,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:42:47,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:42:47,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:42:48,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:48,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:42:48,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406634585] [2024-10-13 12:42:48,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406634585] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:42:48,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:42:48,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 12:42:48,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879543627] [2024-10-13 12:42:48,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:42:48,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:42:48,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:42:48,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:42:48,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:42:48,025 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-10-13 12:42:48,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 155 transitions, 1583 flow. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2024-10-13 12:42:48,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:42:48,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-10-13 12:42:48,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:42:49,806 INFO L124 PetriNetUnfolderBase]: 16612/22301 cut-off events. [2024-10-13 12:42:49,806 INFO L125 PetriNetUnfolderBase]: For 84741/85151 co-relation queries the response was YES. [2024-10-13 12:42:49,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86913 conditions, 22301 events. 16612/22301 cut-off events. For 84741/85151 co-relation queries the response was YES. Maximal size of possible extension queue 975. Compared 119312 event pairs, 5023 based on Foata normal form. 36/22191 useless extension candidates. Maximal degree in co-relation 83848. Up to 11261 conditions per place. [2024-10-13 12:42:50,024 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 126 selfloop transitions, 34 changer transitions 10/195 dead transitions. [2024-10-13 12:42:50,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 195 transitions, 2054 flow [2024-10-13 12:42:50,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:42:50,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:42:50,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-10-13 12:42:50,025 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5857142857142857 [2024-10-13 12:42:50,025 INFO L175 Difference]: Start difference. First operand has 116 places, 155 transitions, 1583 flow. Second operand 5 states and 123 transitions. [2024-10-13 12:42:50,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 195 transitions, 2054 flow [2024-10-13 12:42:50,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 195 transitions, 1965 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-10-13 12:42:50,777 INFO L231 Difference]: Finished difference. Result has 115 places, 154 transitions, 1547 flow [2024-10-13 12:42:50,777 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1494, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1547, PETRI_PLACES=115, PETRI_TRANSITIONS=154} [2024-10-13 12:42:50,777 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 69 predicate places. [2024-10-13 12:42:50,777 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 154 transitions, 1547 flow [2024-10-13 12:42:50,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2024-10-13 12:42:50,778 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:42:50,778 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] [2024-10-13 12:42:50,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-13 12:42:50,778 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-13 12:42:50,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:42:50,778 INFO L85 PathProgramCache]: Analyzing trace with hash 919452349, now seen corresponding path program 1 times [2024-10-13 12:42:50,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:42:50,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622728563] [2024-10-13 12:42:50,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:42:50,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:42:50,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:42:50,894 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:50,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:42:50,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622728563] [2024-10-13 12:42:50,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622728563] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:42:50,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733404842] [2024-10-13 12:42:50,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:42:50,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:42:50,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:42:50,897 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:42:50,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 12:42:50,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:42:50,962 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-13 12:42:50,964 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:42:51,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:51,056 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:42:51,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:42:51,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733404842] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:42:51,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:42:51,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 6 [2024-10-13 12:42:51,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607746095] [2024-10-13 12:42:51,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:42:51,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 12:42:51,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:42:51,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 12:42:51,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-13 12:42:51,108 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-10-13 12:42:51,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 154 transitions, 1547 flow. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 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) [2024-10-13 12:42:51,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:42:51,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-10-13 12:42:51,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:42:55,196 INFO L124 PetriNetUnfolderBase]: 37879/52977 cut-off events. [2024-10-13 12:42:55,196 INFO L125 PetriNetUnfolderBase]: For 242968/244431 co-relation queries the response was YES. [2024-10-13 12:42:55,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200636 conditions, 52977 events. 37879/52977 cut-off events. For 242968/244431 co-relation queries the response was YES. Maximal size of possible extension queue 1805. Compared 334294 event pairs, 3699 based on Foata normal form. 1659/54506 useless extension candidates. Maximal degree in co-relation 172131. Up to 19108 conditions per place. [2024-10-13 12:42:55,967 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 398 selfloop transitions, 22 changer transitions 4/472 dead transitions. [2024-10-13 12:42:55,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 472 transitions, 5388 flow [2024-10-13 12:42:55,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 12:42:55,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 12:42:55,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 221 transitions. [2024-10-13 12:42:55,969 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7517006802721088 [2024-10-13 12:42:55,969 INFO L175 Difference]: Start difference. First operand has 115 places, 154 transitions, 1547 flow. Second operand 7 states and 221 transitions. [2024-10-13 12:42:55,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 472 transitions, 5388 flow [2024-10-13 12:42:58,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 472 transitions, 5114 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-10-13 12:42:58,643 INFO L231 Difference]: Finished difference. Result has 118 places, 173 transitions, 1670 flow [2024-10-13 12:42:58,643 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1477, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1670, PETRI_PLACES=118, PETRI_TRANSITIONS=173} [2024-10-13 12:42:58,643 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 72 predicate places. [2024-10-13 12:42:58,644 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 173 transitions, 1670 flow [2024-10-13 12:42:58,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 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) [2024-10-13 12:42:58,644 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:42:58,644 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] [2024-10-13 12:42:58,657 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-13 12:42:58,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-13 12:42:58,845 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-13 12:42:58,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:42:58,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1479272097, now seen corresponding path program 2 times [2024-10-13 12:42:58,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:42:58,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200061541] [2024-10-13 12:42:58,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:42:58,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:42:58,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:42:58,941 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:58,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:42:58,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200061541] [2024-10-13 12:42:58,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200061541] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:42:58,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272013200] [2024-10-13 12:42:58,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 12:42:58,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:42:58,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:42:58,944 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:42:58,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-13 12:42:59,011 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 12:42:59,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:42:59,012 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-13 12:42:59,013 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:42:59,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:59,099 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:42:59,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 12:42:59,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272013200] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-13 12:42:59,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:42:59,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-13 12:42:59,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515906889] [2024-10-13 12:42:59,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:42:59,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:42:59,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:42:59,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:42:59,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-13 12:42:59,138 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-10-13 12:42:59,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 173 transitions, 1670 flow. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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) [2024-10-13 12:42:59,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:42:59,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-10-13 12:42:59,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand