./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/01b_inc-pthread.i --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/pthread-ext/01b_inc-pthread.i -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 5fad6244fcf6eaf8307cc493ab8f193eacc838ad9166f53316e6259a46f1eed1 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 12:09:33,245 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 12:09:33,297 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-13 12:09:33,300 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 12:09:33,301 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 12:09:33,326 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 12:09:33,327 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 12:09:33,328 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 12:09:33,328 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 12:09:33,329 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 12:09:33,330 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 12:09:33,331 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 12:09:33,331 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 12:09:33,331 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 12:09:33,331 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 12:09:33,332 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 12:09:33,332 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 12:09:33,332 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 12:09:33,332 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 12:09:33,333 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 12:09:33,333 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-13 12:09:33,337 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-13 12:09:33,338 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-13 12:09:33,338 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 12:09:33,338 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-13 12:09:33,338 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 12:09:33,338 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 12:09:33,338 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 12:09:33,339 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 12:09:33,339 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 12:09:33,339 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 12:09:33,339 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 12:09:33,339 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 12:09:33,339 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:09:33,340 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 12:09:33,340 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 12:09:33,340 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 12:09:33,340 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 12:09:33,340 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 12:09:33,340 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 12:09:33,341 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 12:09:33,343 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 12:09:33,343 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fad6244fcf6eaf8307cc493ab8f193eacc838ad9166f53316e6259a46f1eed1 [2024-10-13 12:09:33,557 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 12:09:33,583 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 12:09:33,586 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 12:09:33,587 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 12:09:33,588 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 12:09:33,589 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/01b_inc-pthread.i [2024-10-13 12:09:34,920 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 12:09:35,116 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 12:09:35,117 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/01b_inc-pthread.i [2024-10-13 12:09:35,129 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88f4edc91/4915bc2310ce49d5b2bbd857f81d1914/FLAGb748ef3f3 [2024-10-13 12:09:35,140 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88f4edc91/4915bc2310ce49d5b2bbd857f81d1914 [2024-10-13 12:09:35,143 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 12:09:35,144 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 12:09:35,145 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 12:09:35,145 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 12:09:35,153 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 12:09:35,154 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:09:35" (1/1) ... [2024-10-13 12:09:35,156 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d92d230 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:09:35, skipping insertion in model container [2024-10-13 12:09:35,157 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:09:35" (1/1) ... [2024-10-13 12:09:35,215 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 12:09:35,532 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:09:35,543 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 12:09:35,591 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:09:35,629 INFO L204 MainTranslator]: Completed translation [2024-10-13 12:09:35,630 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:09:35 WrapperNode [2024-10-13 12:09:35,630 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 12:09:35,632 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 12:09:35,632 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 12:09:35,632 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 12:09:35,638 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:09:35" (1/1) ... [2024-10-13 12:09:35,652 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:09:35" (1/1) ... [2024-10-13 12:09:35,671 INFO L138 Inliner]: procedures = 163, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 55 [2024-10-13 12:09:35,672 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 12:09:35,673 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 12:09:35,674 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 12:09:35,674 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 12:09:35,682 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:09:35" (1/1) ... [2024-10-13 12:09:35,682 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:09:35" (1/1) ... [2024-10-13 12:09:35,685 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:09:35" (1/1) ... [2024-10-13 12:09:35,700 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2024-10-13 12:09:35,701 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:09:35" (1/1) ... [2024-10-13 12:09:35,701 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:09:35" (1/1) ... [2024-10-13 12:09:35,711 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:09:35" (1/1) ... [2024-10-13 12:09:35,714 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:09:35" (1/1) ... [2024-10-13 12:09:35,715 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:09:35" (1/1) ... [2024-10-13 12:09:35,716 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:09:35" (1/1) ... [2024-10-13 12:09:35,718 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 12:09:35,722 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 12:09:35,724 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 12:09:35,724 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 12:09:35,725 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:09:35" (1/1) ... [2024-10-13 12:09:35,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:09:35,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:09:35,758 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 12:09:35,760 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 12:09:35,804 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-13 12:09:35,804 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-13 12:09:35,804 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-13 12:09:35,804 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-13 12:09:35,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 12:09:35,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 12:09:35,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 12:09:35,805 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-13 12:09:35,805 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-13 12:09:35,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 12:09:35,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 12:09:35,808 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 12:09:35,939 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 12:09:35,942 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 12:09:36,072 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 12:09:36,073 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 12:09:36,186 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 12:09:36,188 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-13 12:09:36,188 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:09:36 BoogieIcfgContainer [2024-10-13 12:09:36,188 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 12:09:36,190 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 12:09:36,191 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 12:09:36,194 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 12:09:36,194 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:09:35" (1/3) ... [2024-10-13 12:09:36,195 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7479c6d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:09:36, skipping insertion in model container [2024-10-13 12:09:36,196 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:09:35" (2/3) ... [2024-10-13 12:09:36,196 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7479c6d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:09:36, skipping insertion in model container [2024-10-13 12:09:36,197 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:09:36" (3/3) ... [2024-10-13 12:09:36,198 INFO L112 eAbstractionObserver]: Analyzing ICFG 01b_inc-pthread.i [2024-10-13 12:09:36,212 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 12:09:36,212 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-13 12:09:36,213 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 12:09:36,249 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 12:09:36,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 24 places, 22 transitions, 48 flow [2024-10-13 12:09:36,300 INFO L124 PetriNetUnfolderBase]: 1/26 cut-off events. [2024-10-13 12:09:36,300 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 12:09:36,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 26 events. 1/26 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 33 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 19. Up to 2 conditions per place. [2024-10-13 12:09:36,303 INFO L82 GeneralOperation]: Start removeDead. Operand has 24 places, 22 transitions, 48 flow [2024-10-13 12:09:36,305 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 22 transitions, 48 flow [2024-10-13 12:09:36,315 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 12:09:36,324 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;@45d87168, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 12:09:36,324 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-13 12:09:36,330 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 12:09:36,331 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-13 12:09:36,331 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 12:09:36,331 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:09:36,332 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-13 12:09:36,332 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:09:36,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:09:36,343 INFO L85 PathProgramCache]: Analyzing trace with hash 175382, now seen corresponding path program 1 times [2024-10-13 12:09:36,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:09:36,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140539472] [2024-10-13 12:09:36,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:09:36,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:09:36,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:09:36,512 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 12:09:36,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:09:36,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140539472] [2024-10-13 12:09:36,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140539472] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:09:36,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:09:36,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 12:09:36,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687030842] [2024-10-13 12:09:36,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:09:36,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 12:09:36,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:09:36,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 12:09:36,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 12:09:36,571 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 22 [2024-10-13 12:09:36,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 22 transitions, 48 flow. Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 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 12:09:36,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:09:36,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 22 [2024-10-13 12:09:36,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:09:36,619 INFO L124 PetriNetUnfolderBase]: 19/64 cut-off events. [2024-10-13 12:09:36,619 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 12:09:36,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 64 events. 19/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 164 event pairs, 16 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 102. Up to 46 conditions per place. [2024-10-13 12:09:36,621 INFO L140 encePairwiseOnDemand]: 21/22 looper letters, 12 selfloop transitions, 0 changer transitions 0/19 dead transitions. [2024-10-13 12:09:36,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 19 transitions, 66 flow [2024-10-13 12:09:36,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 12:09:36,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-13 12:09:36,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 29 transitions. [2024-10-13 12:09:36,631 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6590909090909091 [2024-10-13 12:09:36,632 INFO L175 Difference]: Start difference. First operand has 24 places, 22 transitions, 48 flow. Second operand 2 states and 29 transitions. [2024-10-13 12:09:36,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 19 transitions, 66 flow [2024-10-13 12:09:36,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 19 transitions, 66 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 12:09:36,640 INFO L231 Difference]: Finished difference. Result has 22 places, 19 transitions, 42 flow [2024-10-13 12:09:36,655 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=42, PETRI_PLACES=22, PETRI_TRANSITIONS=19} [2024-10-13 12:09:36,658 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, -2 predicate places. [2024-10-13 12:09:36,658 INFO L471 AbstractCegarLoop]: Abstraction has has 22 places, 19 transitions, 42 flow [2024-10-13 12:09:36,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 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 12:09:36,659 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:09:36,659 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-13 12:09:36,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 12:09:36,659 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:09:36,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:09:36,660 INFO L85 PathProgramCache]: Analyzing trace with hash 929950781, now seen corresponding path program 1 times [2024-10-13 12:09:36,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:09:36,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261605807] [2024-10-13 12:09:36,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:09:36,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:09:36,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 12:09:36,702 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 12:09:36,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 12:09:36,757 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 12:09:36,758 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 12:09:36,759 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-10-13 12:09:36,760 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-10-13 12:09:36,761 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 4 remaining) [2024-10-13 12:09:36,761 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 4 remaining) [2024-10-13 12:09:36,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 12:09:36,762 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-13 12:09:36,765 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 12:09:36,766 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-13 12:09:36,790 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 12:09:36,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 37 transitions, 84 flow [2024-10-13 12:09:36,806 INFO L124 PetriNetUnfolderBase]: 2/46 cut-off events. [2024-10-13 12:09:36,806 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 12:09:36,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 46 events. 2/46 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 109 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 33. Up to 3 conditions per place. [2024-10-13 12:09:36,807 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 37 transitions, 84 flow [2024-10-13 12:09:36,809 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 37 transitions, 84 flow [2024-10-13 12:09:36,810 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 12:09:36,811 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;@45d87168, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 12:09:36,811 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-10-13 12:09:36,813 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 12:09:36,813 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-13 12:09:36,813 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 12:09:36,813 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:09:36,813 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-13 12:09:36,814 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 12:09:36,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:09:36,814 INFO L85 PathProgramCache]: Analyzing trace with hash 212123, now seen corresponding path program 1 times [2024-10-13 12:09:36,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:09:36,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716127660] [2024-10-13 12:09:36,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:09:36,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:09:36,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:09:36,833 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 12:09:36,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:09:36,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716127660] [2024-10-13 12:09:36,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716127660] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:09:36,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:09:36,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 12:09:36,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846718373] [2024-10-13 12:09:36,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:09:36,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 12:09:36,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:09:36,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 12:09:36,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 12:09:36,836 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 37 [2024-10-13 12:09:36,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 37 transitions, 84 flow. Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 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 12:09:36,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:09:36,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 37 [2024-10-13 12:09:36,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:09:36,999 INFO L124 PetriNetUnfolderBase]: 403/845 cut-off events. [2024-10-13 12:09:37,000 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-10-13 12:09:37,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1526 conditions, 845 events. 403/845 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4939 event pairs, 376 based on Foata normal form. 0/773 useless extension candidates. Maximal degree in co-relation 267. Up to 649 conditions per place. [2024-10-13 12:09:37,014 INFO L140 encePairwiseOnDemand]: 36/37 looper letters, 21 selfloop transitions, 0 changer transitions 0/34 dead transitions. [2024-10-13 12:09:37,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 34 transitions, 120 flow [2024-10-13 12:09:37,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 12:09:37,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-13 12:09:37,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 50 transitions. [2024-10-13 12:09:37,019 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6756756756756757 [2024-10-13 12:09:37,020 INFO L175 Difference]: Start difference. First operand has 40 places, 37 transitions, 84 flow. Second operand 2 states and 50 transitions. [2024-10-13 12:09:37,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 34 transitions, 120 flow [2024-10-13 12:09:37,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 34 transitions, 120 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 12:09:37,022 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 78 flow [2024-10-13 12:09:37,023 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=78, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2024-10-13 12:09:37,024 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2024-10-13 12:09:37,025 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 78 flow [2024-10-13 12:09:37,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 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 12:09:37,025 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:09:37,026 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-10-13 12:09:37,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 12:09:37,026 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 12:09:37,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:09:37,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1653920442, now seen corresponding path program 1 times [2024-10-13 12:09:37,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:09:37,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921527860] [2024-10-13 12:09:37,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:09:37,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:09:37,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 12:09:37,052 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 12:09:37,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 12:09:37,075 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 12:09:37,075 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 12:09:37,075 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-10-13 12:09:37,076 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2024-10-13 12:09:37,076 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 5 remaining) [2024-10-13 12:09:37,076 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2024-10-13 12:09:37,076 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2024-10-13 12:09:37,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 12:09:37,076 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-13 12:09:37,077 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 12:09:37,077 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-13 12:09:37,107 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 12:09:37,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 52 transitions, 122 flow [2024-10-13 12:09:37,119 INFO L124 PetriNetUnfolderBase]: 3/66 cut-off events. [2024-10-13 12:09:37,120 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-13 12:09:37,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 66 events. 3/66 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 201 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 53. Up to 4 conditions per place. [2024-10-13 12:09:37,121 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 52 transitions, 122 flow [2024-10-13 12:09:37,122 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 52 transitions, 122 flow [2024-10-13 12:09:37,123 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 12:09:37,124 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;@45d87168, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 12:09:37,124 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-10-13 12:09:37,126 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 12:09:37,126 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-13 12:09:37,126 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 12:09:37,126 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:09:37,127 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-13 12:09:37,127 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-13 12:09:37,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:09:37,128 INFO L85 PathProgramCache]: Analyzing trace with hash 263759, now seen corresponding path program 1 times [2024-10-13 12:09:37,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:09:37,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108654124] [2024-10-13 12:09:37,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:09:37,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:09:37,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:09:37,154 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 12:09:37,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:09:37,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108654124] [2024-10-13 12:09:37,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108654124] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:09:37,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:09:37,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 12:09:37,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932681671] [2024-10-13 12:09:37,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:09:37,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 12:09:37,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:09:37,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 12:09:37,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 12:09:37,157 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 52 [2024-10-13 12:09:37,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 122 flow. Second operand has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 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 12:09:37,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:09:37,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 52 [2024-10-13 12:09:37,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:09:37,999 INFO L124 PetriNetUnfolderBase]: 5803/9835 cut-off events. [2024-10-13 12:09:38,000 INFO L125 PetriNetUnfolderBase]: For 679/679 co-relation queries the response was YES. [2024-10-13 12:09:38,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18212 conditions, 9835 events. 5803/9835 cut-off events. For 679/679 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 74404 event pairs, 5560 based on Foata normal form. 0/8904 useless extension candidates. Maximal degree in co-relation 1532. Up to 8020 conditions per place. [2024-10-13 12:09:38,075 INFO L140 encePairwiseOnDemand]: 51/52 looper letters, 30 selfloop transitions, 0 changer transitions 0/49 dead transitions. [2024-10-13 12:09:38,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 49 transitions, 176 flow [2024-10-13 12:09:38,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 12:09:38,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-13 12:09:38,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 71 transitions. [2024-10-13 12:09:38,078 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6826923076923077 [2024-10-13 12:09:38,078 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 122 flow. Second operand 2 states and 71 transitions. [2024-10-13 12:09:38,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 49 transitions, 176 flow [2024-10-13 12:09:38,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 49 transitions, 174 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-13 12:09:38,082 INFO L231 Difference]: Finished difference. Result has 54 places, 49 transitions, 114 flow [2024-10-13 12:09:38,083 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=114, PETRI_PLACES=54, PETRI_TRANSITIONS=49} [2024-10-13 12:09:38,083 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, -2 predicate places. [2024-10-13 12:09:38,083 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 49 transitions, 114 flow [2024-10-13 12:09:38,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 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 12:09:38,084 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:09:38,084 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:09:38,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 12:09:38,084 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-13 12:09:38,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:09:38,084 INFO L85 PathProgramCache]: Analyzing trace with hash 484077808, now seen corresponding path program 1 times [2024-10-13 12:09:38,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:09:38,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978709478] [2024-10-13 12:09:38,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:09:38,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:09:38,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:09:38,298 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 12:09:38,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:09:38,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978709478] [2024-10-13 12:09:38,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978709478] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:09:38,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:09:38,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 12:09:38,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935214234] [2024-10-13 12:09:38,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:09:38,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:09:38,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:09:38,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:09:38,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:09:38,319 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-10-13 12:09:38,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 49 transitions, 114 flow. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 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 12:09:38,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:09:38,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-10-13 12:09:38,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:09:39,731 INFO L124 PetriNetUnfolderBase]: 11367/19191 cut-off events. [2024-10-13 12:09:39,732 INFO L125 PetriNetUnfolderBase]: For 368/368 co-relation queries the response was YES. [2024-10-13 12:09:39,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35824 conditions, 19191 events. 11367/19191 cut-off events. For 368/368 co-relation queries the response was YES. Maximal size of possible extension queue 1116. Compared 156012 event pairs, 3351 based on Foata normal form. 0/16604 useless extension candidates. Maximal degree in co-relation 35818. Up to 7422 conditions per place. [2024-10-13 12:09:39,855 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 104 selfloop transitions, 12 changer transitions 0/129 dead transitions. [2024-10-13 12:09:39,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 129 transitions, 536 flow [2024-10-13 12:09:39,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 12:09:39,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 12:09:39,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 206 transitions. [2024-10-13 12:09:39,862 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6602564102564102 [2024-10-13 12:09:39,862 INFO L175 Difference]: Start difference. First operand has 54 places, 49 transitions, 114 flow. Second operand 6 states and 206 transitions. [2024-10-13 12:09:39,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 129 transitions, 536 flow [2024-10-13 12:09:39,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 129 transitions, 536 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 12:09:39,866 INFO L231 Difference]: Finished difference. Result has 63 places, 61 transitions, 205 flow [2024-10-13 12:09:39,867 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=205, PETRI_PLACES=63, PETRI_TRANSITIONS=61} [2024-10-13 12:09:39,867 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 7 predicate places. [2024-10-13 12:09:39,868 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 61 transitions, 205 flow [2024-10-13 12:09:39,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 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 12:09:39,868 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:09:39,868 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-10-13 12:09:39,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 12:09:39,868 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-13 12:09:39,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:09:39,869 INFO L85 PathProgramCache]: Analyzing trace with hash -75681636, now seen corresponding path program 1 times [2024-10-13 12:09:39,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:09:39,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10032574] [2024-10-13 12:09:39,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:09:39,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:09:39,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 12:09:39,877 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 12:09:39,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 12:09:39,887 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 12:09:39,888 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 12:09:39,888 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-10-13 12:09:39,888 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2024-10-13 12:09:39,888 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 6 remaining) [2024-10-13 12:09:39,888 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 6 remaining) [2024-10-13 12:09:39,889 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2024-10-13 12:09:39,889 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2024-10-13 12:09:39,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 12:09:39,889 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-10-13 12:09:39,889 WARN L239 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 12:09:39,890 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-10-13 12:09:39,909 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 12:09:39,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 67 transitions, 162 flow [2024-10-13 12:09:39,916 INFO L124 PetriNetUnfolderBase]: 4/86 cut-off events. [2024-10-13 12:09:39,916 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-13 12:09:39,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 86 events. 4/86 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 288 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 78. Up to 5 conditions per place. [2024-10-13 12:09:39,916 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 67 transitions, 162 flow [2024-10-13 12:09:39,917 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 67 transitions, 162 flow [2024-10-13 12:09:39,918 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 12:09:39,919 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;@45d87168, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 12:09:39,919 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-10-13 12:09:39,920 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 12:09:39,920 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-13 12:09:39,920 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 12:09:39,920 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:09:39,920 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-13 12:09:39,920 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-13 12:09:39,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:09:39,921 INFO L85 PathProgramCache]: Analyzing trace with hash 330290, now seen corresponding path program 1 times [2024-10-13 12:09:39,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:09:39,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799673133] [2024-10-13 12:09:39,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:09:39,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:09:39,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:09:39,929 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 12:09:39,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:09:39,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799673133] [2024-10-13 12:09:39,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799673133] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:09:39,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:09:39,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 12:09:39,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875249728] [2024-10-13 12:09:39,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:09:39,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 12:09:39,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:09:39,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 12:09:39,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 12:09:39,931 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 67 [2024-10-13 12:09:39,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 67 transitions, 162 flow. Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 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 12:09:39,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:09:39,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 67 [2024-10-13 12:09:39,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:09:46,942 INFO L124 PetriNetUnfolderBase]: 71899/108249 cut-off events. [2024-10-13 12:09:46,942 INFO L125 PetriNetUnfolderBase]: For 10977/10977 co-relation queries the response was YES. [2024-10-13 12:09:47,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204107 conditions, 108249 events. 71899/108249 cut-off events. For 10977/10977 co-relation queries the response was YES. Maximal size of possible extension queue 4329. Compared 924403 event pairs, 69712 based on Foata normal form. 0/97400 useless extension candidates. Maximal degree in co-relation 18298. Up to 91855 conditions per place. [2024-10-13 12:09:47,781 INFO L140 encePairwiseOnDemand]: 66/67 looper letters, 39 selfloop transitions, 0 changer transitions 0/64 dead transitions. [2024-10-13 12:09:47,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 64 transitions, 234 flow [2024-10-13 12:09:47,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 12:09:47,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-13 12:09:47,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 92 transitions. [2024-10-13 12:09:47,787 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6865671641791045 [2024-10-13 12:09:47,787 INFO L175 Difference]: Start difference. First operand has 72 places, 67 transitions, 162 flow. Second operand 2 states and 92 transitions. [2024-10-13 12:09:47,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 64 transitions, 234 flow [2024-10-13 12:09:47,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 64 transitions, 228 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-10-13 12:09:47,802 INFO L231 Difference]: Finished difference. Result has 70 places, 64 transitions, 150 flow [2024-10-13 12:09:47,802 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=150, PETRI_PLACES=70, PETRI_TRANSITIONS=64} [2024-10-13 12:09:47,803 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, -2 predicate places. [2024-10-13 12:09:47,803 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 64 transitions, 150 flow [2024-10-13 12:09:47,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 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 12:09:47,803 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:09:47,803 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:09:47,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 12:09:47,803 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-13 12:09:47,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:09:47,804 INFO L85 PathProgramCache]: Analyzing trace with hash 394325089, now seen corresponding path program 1 times [2024-10-13 12:09:47,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:09:47,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174314929] [2024-10-13 12:09:47,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:09:47,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:09:47,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:09:47,955 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 12:09:47,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:09:47,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174314929] [2024-10-13 12:09:47,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174314929] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:09:47,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:09:47,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 12:09:47,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256557128] [2024-10-13 12:09:47,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:09:47,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:09:47,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:09:47,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:09:47,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:09:47,977 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 67 [2024-10-13 12:09:47,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 64 transitions, 150 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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 12:09:47,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:09:47,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 67 [2024-10-13 12:09:47,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:10:05,525 INFO L124 PetriNetUnfolderBase]: 207509/303575 cut-off events. [2024-10-13 12:10:05,527 INFO L125 PetriNetUnfolderBase]: For 5181/5181 co-relation queries the response was YES. [2024-10-13 12:10:06,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 576711 conditions, 303575 events. 207509/303575 cut-off events. For 5181/5181 co-relation queries the response was YES. Maximal size of possible extension queue 12236. Compared 2715801 event pairs, 70926 based on Foata normal form. 0/257763 useless extension candidates. Maximal degree in co-relation 576704. Up to 133343 conditions per place. [2024-10-13 12:10:07,683 INFO L140 encePairwiseOnDemand]: 55/67 looper letters, 144 selfloop transitions, 15 changer transitions 0/176 dead transitions. [2024-10-13 12:10:07,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 176 transitions, 742 flow [2024-10-13 12:10:07,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 12:10:07,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 12:10:07,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 275 transitions. [2024-10-13 12:10:07,685 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6840796019900498 [2024-10-13 12:10:07,685 INFO L175 Difference]: Start difference. First operand has 70 places, 64 transitions, 150 flow. Second operand 6 states and 275 transitions. [2024-10-13 12:10:07,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 176 transitions, 742 flow [2024-10-13 12:10:07,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 176 transitions, 742 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 12:10:07,693 INFO L231 Difference]: Finished difference. Result has 79 places, 80 transitions, 268 flow [2024-10-13 12:10:07,693 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=268, PETRI_PLACES=79, PETRI_TRANSITIONS=80} [2024-10-13 12:10:07,693 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, 7 predicate places. [2024-10-13 12:10:07,694 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 80 transitions, 268 flow [2024-10-13 12:10:07,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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 12:10:07,694 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:10:07,694 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:10:07,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-13 12:10:07,694 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-13 12:10:07,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:10:07,695 INFO L85 PathProgramCache]: Analyzing trace with hash 2020836229, now seen corresponding path program 1 times [2024-10-13 12:10:07,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:10:07,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489801011] [2024-10-13 12:10:07,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:10:07,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:10:07,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:10:07,810 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 12:10:07,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:10:07,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489801011] [2024-10-13 12:10:07,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489801011] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:10:07,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:10:07,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 12:10:07,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166419850] [2024-10-13 12:10:07,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:10:07,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:10:07,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:10:07,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:10:07,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:10:07,822 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 67 [2024-10-13 12:10:07,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 80 transitions, 268 flow. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 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 12:10:07,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:10:07,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 67 [2024-10-13 12:10:07,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand