./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread/triangular-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread/triangular-1.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 b585114ab4aff9777d36c84f93f7abe0931f77338421f004296c8a8d328d3dfd --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 09:20:29,019 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 09:20:29,083 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-19 09:20:29,091 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 09:20:29,092 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 09:20:29,121 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 09:20:29,122 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 09:20:29,122 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 09:20:29,123 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 09:20:29,124 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 09:20:29,125 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 09:20:29,126 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 09:20:29,126 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 09:20:29,128 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 09:20:29,128 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 09:20:29,129 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 09:20:29,129 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 09:20:29,130 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 09:20:29,130 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 09:20:29,130 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 09:20:29,130 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-19 09:20:29,133 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-19 09:20:29,133 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-19 09:20:29,134 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 09:20:29,134 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-19 09:20:29,134 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 09:20:29,134 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 09:20:29,135 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 09:20:29,135 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 09:20:29,135 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 09:20:29,136 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 09:20:29,136 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 09:20:29,137 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 09:20:29,137 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:20:29,138 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 09:20:29,138 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 09:20:29,138 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 09:20:29,139 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 09:20:29,139 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 09:20:29,139 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 09:20:29,139 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 09:20:29,140 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 09:20:29,140 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b585114ab4aff9777d36c84f93f7abe0931f77338421f004296c8a8d328d3dfd [2024-11-19 09:20:29,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 09:20:29,434 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 09:20:29,436 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 09:20:29,437 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 09:20:29,438 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 09:20:29,439 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/triangular-1.i [2024-11-19 09:20:30,872 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 09:20:31,113 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 09:20:31,113 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-1.i [2024-11-19 09:20:31,130 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c4027c7b/eb1697a42c0748c19e9301eab5dfd6b9/FLAG5e83ec507 [2024-11-19 09:20:31,142 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c4027c7b/eb1697a42c0748c19e9301eab5dfd6b9 [2024-11-19 09:20:31,145 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 09:20:31,146 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 09:20:31,147 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 09:20:31,147 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 09:20:31,154 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 09:20:31,155 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:20:31" (1/1) ... [2024-11-19 09:20:31,157 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a27c78a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:20:31, skipping insertion in model container [2024-11-19 09:20:31,158 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:20:31" (1/1) ... [2024-11-19 09:20:31,206 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 09:20:31,528 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:20:31,538 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 09:20:31,587 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:20:31,651 INFO L204 MainTranslator]: Completed translation [2024-11-19 09:20:31,652 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:20:31 WrapperNode [2024-11-19 09:20:31,652 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 09:20:31,653 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 09:20:31,653 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 09:20:31,653 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 09:20:31,660 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:20:31" (1/1) ... [2024-11-19 09:20:31,672 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:20:31" (1/1) ... [2024-11-19 09:20:31,705 INFO L138 Inliner]: procedures = 168, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 39 [2024-11-19 09:20:31,706 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 09:20:31,707 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 09:20:31,707 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 09:20:31,707 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 09:20:31,716 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:20:31" (1/1) ... [2024-11-19 09:20:31,716 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:20:31" (1/1) ... [2024-11-19 09:20:31,718 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:20:31" (1/1) ... [2024-11-19 09:20:31,732 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]. [2024-11-19 09:20:31,732 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:20:31" (1/1) ... [2024-11-19 09:20:31,733 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:20:31" (1/1) ... [2024-11-19 09:20:31,737 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:20:31" (1/1) ... [2024-11-19 09:20:31,744 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:20:31" (1/1) ... [2024-11-19 09:20:31,745 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:20:31" (1/1) ... [2024-11-19 09:20:31,751 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:20:31" (1/1) ... [2024-11-19 09:20:31,754 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 09:20:31,755 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 09:20:31,755 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 09:20:31,755 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 09:20:31,756 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:20:31" (1/1) ... [2024-11-19 09:20:31,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:20:31,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:20:31,796 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 09:20:31,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 09:20:31,847 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-19 09:20:31,847 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-19 09:20:31,848 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-19 09:20:31,848 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-19 09:20:31,849 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-19 09:20:31,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 09:20:31,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 09:20:31,849 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-19 09:20:31,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 09:20:31,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 09:20:31,851 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 09:20:32,013 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 09:20:32,016 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 09:20:32,159 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 09:20:32,161 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 09:20:32,260 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 09:20:32,261 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-19 09:20:32,261 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:20:32 BoogieIcfgContainer [2024-11-19 09:20:32,261 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 09:20:32,264 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 09:20:32,266 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 09:20:32,269 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 09:20:32,269 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 09:20:31" (1/3) ... [2024-11-19 09:20:32,270 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52bd6649 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:20:32, skipping insertion in model container [2024-11-19 09:20:32,270 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:20:31" (2/3) ... [2024-11-19 09:20:32,271 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52bd6649 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:20:32, skipping insertion in model container [2024-11-19 09:20:32,271 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:20:32" (3/3) ... [2024-11-19 09:20:32,273 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-1.i [2024-11-19 09:20:32,289 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 09:20:32,289 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-19 09:20:32,289 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 09:20:32,343 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 09:20:32,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 29 transitions, 66 flow [2024-11-19 09:20:32,422 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2024-11-19 09:20:32,422 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:20:32,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 27 events. 4/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-11-19 09:20:32,430 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 29 transitions, 66 flow [2024-11-19 09:20:32,433 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 27 transitions, 60 flow [2024-11-19 09:20:32,444 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:20:32,454 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;@4f15a222, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:20:32,455 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-19 09:20:32,463 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:20:32,464 INFO L124 PetriNetUnfolderBase]: 4/24 cut-off events. [2024-11-19 09:20:32,464 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:20:32,464 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:20:32,465 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:20:32,465 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:20:32,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:20:32,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1038261642, now seen corresponding path program 1 times [2024-11-19 09:20:32,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:20:32,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360057225] [2024-11-19 09:20:32,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:20:32,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:20:32,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:20:32,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:20:32,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:20:32,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360057225] [2024-11-19 09:20:32,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360057225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:20:32,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:20:32,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 09:20:32,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608062475] [2024-11-19 09:20:32,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:20:32,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:20:32,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:20:32,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:20:32,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:20:32,833 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 29 [2024-11-19 09:20:32,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 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) [2024-11-19 09:20:32,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:20:32,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 29 [2024-11-19 09:20:32,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:20:32,983 INFO L124 PetriNetUnfolderBase]: 70/157 cut-off events. [2024-11-19 09:20:32,983 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-19 09:20:32,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 157 events. 70/157 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 554 event pairs, 44 based on Foata normal form. 15/161 useless extension candidates. Maximal degree in co-relation 272. Up to 113 conditions per place. [2024-11-19 09:20:32,990 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 11 selfloop transitions, 1 changer transitions 1/23 dead transitions. [2024-11-19 09:20:32,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 23 transitions, 78 flow [2024-11-19 09:20:32,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:20:32,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:20:33,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2024-11-19 09:20:33,005 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5977011494252874 [2024-11-19 09:20:33,007 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 60 flow. Second operand 3 states and 52 transitions. [2024-11-19 09:20:33,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 23 transitions, 78 flow [2024-11-19 09:20:33,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 23 transitions, 76 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:20:33,011 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 50 flow [2024-11-19 09:20:33,013 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2024-11-19 09:20:33,016 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, -2 predicate places. [2024-11-19 09:20:33,017 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 50 flow [2024-11-19 09:20:33,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 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) [2024-11-19 09:20:33,017 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:20:33,017 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:20:33,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 09:20:33,018 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:20:33,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:20:33,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1038262774, now seen corresponding path program 1 times [2024-11-19 09:20:33,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:20:33,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043189582] [2024-11-19 09:20:33,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:20:33,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:20:33,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:20:33,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:20:33,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:20:33,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043189582] [2024-11-19 09:20:33,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043189582] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:20:33,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:20:33,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 09:20:33,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812903212] [2024-11-19 09:20:33,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:20:33,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 09:20:33,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:20:33,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 09:20:33,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 09:20:33,278 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-19 09:20:33,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:20:33,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:20:33,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-19 09:20:33,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:20:33,498 INFO L124 PetriNetUnfolderBase]: 273/487 cut-off events. [2024-11-19 09:20:33,499 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:20:33,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 927 conditions, 487 events. 273/487 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1990 event pairs, 45 based on Foata normal form. 0/470 useless extension candidates. Maximal degree in co-relation 921. Up to 181 conditions per place. [2024-11-19 09:20:33,503 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 25 selfloop transitions, 4 changer transitions 21/54 dead transitions. [2024-11-19 09:20:33,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 54 transitions, 212 flow [2024-11-19 09:20:33,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 09:20:33,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 09:20:33,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2024-11-19 09:20:33,511 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5689655172413793 [2024-11-19 09:20:33,511 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 50 flow. Second operand 6 states and 99 transitions. [2024-11-19 09:20:33,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 54 transitions, 212 flow [2024-11-19 09:20:33,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 54 transitions, 211 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:20:33,515 INFO L231 Difference]: Finished difference. Result has 35 places, 23 transitions, 74 flow [2024-11-19 09:20:33,515 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=74, PETRI_PLACES=35, PETRI_TRANSITIONS=23} [2024-11-19 09:20:33,516 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2024-11-19 09:20:33,516 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 23 transitions, 74 flow [2024-11-19 09:20:33,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:20:33,519 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:20:33,519 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:20:33,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 09:20:33,520 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:20:33,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:20:33,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1117686194, now seen corresponding path program 1 times [2024-11-19 09:20:33,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:20:33,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359986828] [2024-11-19 09:20:33,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:20:33,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:20:33,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:20:33,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:20:33,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:20:33,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359986828] [2024-11-19 09:20:33,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359986828] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:20:33,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:20:33,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 09:20:33,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038853875] [2024-11-19 09:20:33,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:20:33,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 09:20:33,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:20:33,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 09:20:33,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 09:20:33,748 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-19 09:20:33,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 23 transitions, 74 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:20:33,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:20:33,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-19 09:20:33,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:20:34,015 INFO L124 PetriNetUnfolderBase]: 382/704 cut-off events. [2024-11-19 09:20:34,015 INFO L125 PetriNetUnfolderBase]: For 276/276 co-relation queries the response was YES. [2024-11-19 09:20:34,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1602 conditions, 704 events. 382/704 cut-off events. For 276/276 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3073 event pairs, 65 based on Foata normal form. 27/727 useless extension candidates. Maximal degree in co-relation 1591. Up to 246 conditions per place. [2024-11-19 09:20:34,025 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 46 selfloop transitions, 9 changer transitions 20/79 dead transitions. [2024-11-19 09:20:34,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 79 transitions, 382 flow [2024-11-19 09:20:34,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 09:20:34,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 09:20:34,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-11-19 09:20:34,030 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2024-11-19 09:20:34,030 INFO L175 Difference]: Start difference. First operand has 35 places, 23 transitions, 74 flow. Second operand 9 states and 144 transitions. [2024-11-19 09:20:34,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 79 transitions, 382 flow [2024-11-19 09:20:34,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 79 transitions, 366 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-11-19 09:20:34,039 INFO L231 Difference]: Finished difference. Result has 44 places, 32 transitions, 159 flow [2024-11-19 09:20:34,039 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=159, PETRI_PLACES=44, PETRI_TRANSITIONS=32} [2024-11-19 09:20:34,041 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 14 predicate places. [2024-11-19 09:20:34,041 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 32 transitions, 159 flow [2024-11-19 09:20:34,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:20:34,042 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:20:34,042 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:20:34,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 09:20:34,043 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:20:34,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:20:34,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1000674482, now seen corresponding path program 2 times [2024-11-19 09:20:34,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:20:34,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378568917] [2024-11-19 09:20:34,044 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:20:34,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:20:34,059 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 09:20:34,060 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:20:34,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:20:34,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:20:34,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378568917] [2024-11-19 09:20:34,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378568917] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:20:34,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:20:34,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 09:20:34,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849218569] [2024-11-19 09:20:34,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:20:34,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 09:20:34,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:20:34,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 09:20:34,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 09:20:34,213 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-19 09:20:34,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 32 transitions, 159 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:20:34,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:20:34,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-19 09:20:34,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:20:34,446 INFO L124 PetriNetUnfolderBase]: 328/611 cut-off events. [2024-11-19 09:20:34,447 INFO L125 PetriNetUnfolderBase]: For 971/971 co-relation queries the response was YES. [2024-11-19 09:20:34,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1741 conditions, 611 events. 328/611 cut-off events. For 971/971 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2595 event pairs, 65 based on Foata normal form. 45/652 useless extension candidates. Maximal degree in co-relation 1723. Up to 234 conditions per place. [2024-11-19 09:20:34,451 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 38 selfloop transitions, 9 changer transitions 28/79 dead transitions. [2024-11-19 09:20:34,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 79 transitions, 499 flow [2024-11-19 09:20:34,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 09:20:34,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 09:20:34,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-11-19 09:20:34,453 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5474137931034483 [2024-11-19 09:20:34,453 INFO L175 Difference]: Start difference. First operand has 44 places, 32 transitions, 159 flow. Second operand 8 states and 127 transitions. [2024-11-19 09:20:34,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 79 transitions, 499 flow [2024-11-19 09:20:34,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 79 transitions, 491 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-19 09:20:34,459 INFO L231 Difference]: Finished difference. Result has 51 places, 34 transitions, 213 flow [2024-11-19 09:20:34,459 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=213, PETRI_PLACES=51, PETRI_TRANSITIONS=34} [2024-11-19 09:20:34,460 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 21 predicate places. [2024-11-19 09:20:34,460 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 34 transitions, 213 flow [2024-11-19 09:20:34,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:20:34,460 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:20:34,461 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:20:34,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 09:20:34,461 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:20:34,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:20:34,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1356857717, now seen corresponding path program 1 times [2024-11-19 09:20:34,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:20:34,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209559985] [2024-11-19 09:20:34,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:20:34,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:20:34,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:20:34,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:20:34,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:20:34,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209559985] [2024-11-19 09:20:34,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209559985] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:20:34,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:20:34,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 09:20:34,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573934398] [2024-11-19 09:20:34,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:20:34,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 09:20:34,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:20:34,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 09:20:34,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-19 09:20:34,609 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-19 09:20:34,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 34 transitions, 213 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:20:34,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:20:34,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-19 09:20:34,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:20:34,864 INFO L124 PetriNetUnfolderBase]: 337/620 cut-off events. [2024-11-19 09:20:34,865 INFO L125 PetriNetUnfolderBase]: For 1649/1649 co-relation queries the response was YES. [2024-11-19 09:20:34,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1946 conditions, 620 events. 337/620 cut-off events. For 1649/1649 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2632 event pairs, 74 based on Foata normal form. 18/634 useless extension candidates. Maximal degree in co-relation 1923. Up to 237 conditions per place. [2024-11-19 09:20:34,870 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 46 selfloop transitions, 16 changer transitions 24/90 dead transitions. [2024-11-19 09:20:34,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 90 transitions, 610 flow [2024-11-19 09:20:34,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 09:20:34,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 09:20:34,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 168 transitions. [2024-11-19 09:20:34,873 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5266457680250783 [2024-11-19 09:20:34,874 INFO L175 Difference]: Start difference. First operand has 51 places, 34 transitions, 213 flow. Second operand 11 states and 168 transitions. [2024-11-19 09:20:34,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 90 transitions, 610 flow [2024-11-19 09:20:34,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 90 transitions, 543 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-11-19 09:20:34,884 INFO L231 Difference]: Finished difference. Result has 56 places, 40 transitions, 282 flow [2024-11-19 09:20:34,885 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=282, PETRI_PLACES=56, PETRI_TRANSITIONS=40} [2024-11-19 09:20:34,887 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 26 predicate places. [2024-11-19 09:20:34,888 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 40 transitions, 282 flow [2024-11-19 09:20:34,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:20:34,888 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:20:34,889 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:20:34,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 09:20:34,889 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:20:34,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:20:34,890 INFO L85 PathProgramCache]: Analyzing trace with hash 392343623, now seen corresponding path program 2 times [2024-11-19 09:20:34,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:20:34,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291386774] [2024-11-19 09:20:34,893 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:20:34,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:20:34,904 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 09:20:34,905 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:20:35,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:20:35,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:20:35,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291386774] [2024-11-19 09:20:35,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291386774] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:20:35,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:20:35,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 09:20:35,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190101193] [2024-11-19 09:20:35,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:20:35,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 09:20:35,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:20:35,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 09:20:35,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-19 09:20:35,027 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-19 09:20:35,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 40 transitions, 282 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:20:35,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:20:35,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-19 09:20:35,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:20:35,319 INFO L124 PetriNetUnfolderBase]: 445/807 cut-off events. [2024-11-19 09:20:35,320 INFO L125 PetriNetUnfolderBase]: For 2473/2473 co-relation queries the response was YES. [2024-11-19 09:20:35,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2634 conditions, 807 events. 445/807 cut-off events. For 2473/2473 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3481 event pairs, 59 based on Foata normal form. 27/828 useless extension candidates. Maximal degree in co-relation 2610. Up to 151 conditions per place. [2024-11-19 09:20:35,326 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 44 selfloop transitions, 23 changer transitions 30/101 dead transitions. [2024-11-19 09:20:35,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 101 transitions, 742 flow [2024-11-19 09:20:35,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 09:20:35,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 09:20:35,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-11-19 09:20:35,329 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5360501567398119 [2024-11-19 09:20:35,329 INFO L175 Difference]: Start difference. First operand has 56 places, 40 transitions, 282 flow. Second operand 11 states and 171 transitions. [2024-11-19 09:20:35,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 101 transitions, 742 flow [2024-11-19 09:20:35,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 101 transitions, 688 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-11-19 09:20:35,337 INFO L231 Difference]: Finished difference. Result has 67 places, 46 transitions, 393 flow [2024-11-19 09:20:35,338 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=393, PETRI_PLACES=67, PETRI_TRANSITIONS=46} [2024-11-19 09:20:35,339 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 37 predicate places. [2024-11-19 09:20:35,339 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 46 transitions, 393 flow [2024-11-19 09:20:35,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:20:35,340 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:20:35,340 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:20:35,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 09:20:35,340 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:20:35,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:20:35,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1383133169, now seen corresponding path program 1 times [2024-11-19 09:20:35,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:20:35,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770715976] [2024-11-19 09:20:35,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:20:35,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:20:35,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:20:35,462 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:20:35,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:20:35,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770715976] [2024-11-19 09:20:35,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770715976] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:20:35,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729811444] [2024-11-19 09:20:35,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:20:35,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:20:35,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:20:35,466 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:20:35,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 09:20:35,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:20:35,540 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-19 09:20:35,544 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:20:35,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:20:35,648 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:20:35,809 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:20:35,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729811444] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:20:35,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:20:35,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-19 09:20:35,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908079628] [2024-11-19 09:20:35,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:20:35,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 09:20:35,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:20:35,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 09:20:35,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-19 09:20:35,825 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-19 09:20:35,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 46 transitions, 393 flow. Second operand has 13 states, 13 states have (on average 10.153846153846153) internal successors, (132), 13 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:20:35,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:20:35,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-19 09:20:35,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:20:36,343 INFO L124 PetriNetUnfolderBase]: 571/1058 cut-off events. [2024-11-19 09:20:36,343 INFO L125 PetriNetUnfolderBase]: For 6872/6872 co-relation queries the response was YES. [2024-11-19 09:20:36,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4148 conditions, 1058 events. 571/1058 cut-off events. For 6872/6872 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 4466 event pairs, 137 based on Foata normal form. 63/1117 useless extension candidates. Maximal degree in co-relation 4119. Up to 486 conditions per place. [2024-11-19 09:20:36,351 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 64 selfloop transitions, 17 changer transitions 67/152 dead transitions. [2024-11-19 09:20:36,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 152 transitions, 1349 flow [2024-11-19 09:20:36,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-19 09:20:36,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-19 09:20:36,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 288 transitions. [2024-11-19 09:20:36,354 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5226860254083484 [2024-11-19 09:20:36,354 INFO L175 Difference]: Start difference. First operand has 67 places, 46 transitions, 393 flow. Second operand 19 states and 288 transitions. [2024-11-19 09:20:36,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 152 transitions, 1349 flow [2024-11-19 09:20:36,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 152 transitions, 1270 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-11-19 09:20:36,368 INFO L231 Difference]: Finished difference. Result has 90 places, 52 transitions, 524 flow [2024-11-19 09:20:36,368 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=524, PETRI_PLACES=90, PETRI_TRANSITIONS=52} [2024-11-19 09:20:36,369 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 60 predicate places. [2024-11-19 09:20:36,369 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 52 transitions, 524 flow [2024-11-19 09:20:36,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.153846153846153) internal successors, (132), 13 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:20:36,369 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:20:36,369 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:20:36,388 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 09:20:36,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:20:36,571 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:20:36,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:20:36,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1985942713, now seen corresponding path program 2 times [2024-11-19 09:20:36,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:20:36,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88717513] [2024-11-19 09:20:36,572 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:20:36,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:20:36,584 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:20:36,585 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:20:36,696 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:20:36,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:20:36,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88717513] [2024-11-19 09:20:36,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88717513] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:20:36,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788323385] [2024-11-19 09:20:36,697 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:20:36,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:20:36,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:20:36,699 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:20:36,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 09:20:36,766 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:20:36,767 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:20:36,768 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-19 09:20:36,769 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:20:36,833 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:20:36,833 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:20:36,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:20:36,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788323385] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:20:36,956 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:20:36,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-19 09:20:36,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971327054] [2024-11-19 09:20:36,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:20:36,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 09:20:36,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:20:36,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 09:20:36,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-11-19 09:20:36,980 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-19 09:20:36,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 52 transitions, 524 flow. Second operand has 13 states, 13 states have (on average 10.153846153846153) internal successors, (132), 13 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:20:36,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:20:36,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-19 09:20:36,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:20:37,729 INFO L124 PetriNetUnfolderBase]: 877/1628 cut-off events. [2024-11-19 09:20:37,729 INFO L125 PetriNetUnfolderBase]: For 29480/29480 co-relation queries the response was YES. [2024-11-19 09:20:37,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8520 conditions, 1628 events. 877/1628 cut-off events. For 29480/29480 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7913 event pairs, 70 based on Foata normal form. 72/1696 useless extension candidates. Maximal degree in co-relation 8480. Up to 249 conditions per place. [2024-11-19 09:20:37,744 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 88 selfloop transitions, 46 changer transitions 80/218 dead transitions. [2024-11-19 09:20:37,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 218 transitions, 2565 flow [2024-11-19 09:20:37,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-19 09:20:37,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-19 09:20:37,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 415 transitions. [2024-11-19 09:20:37,746 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5300127713920817 [2024-11-19 09:20:37,746 INFO L175 Difference]: Start difference. First operand has 90 places, 52 transitions, 524 flow. Second operand 27 states and 415 transitions. [2024-11-19 09:20:37,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 218 transitions, 2565 flow [2024-11-19 09:20:37,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 218 transitions, 2089 flow, removed 227 selfloop flow, removed 12 redundant places. [2024-11-19 09:20:37,773 INFO L231 Difference]: Finished difference. Result has 116 places, 70 transitions, 908 flow [2024-11-19 09:20:37,773 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=908, PETRI_PLACES=116, PETRI_TRANSITIONS=70} [2024-11-19 09:20:37,774 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 86 predicate places. [2024-11-19 09:20:37,774 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 70 transitions, 908 flow [2024-11-19 09:20:37,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.153846153846153) internal successors, (132), 13 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:20:37,775 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:20:37,775 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:20:37,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-19 09:20:37,979 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,SelfDestructingSolverStorable7 [2024-11-19 09:20:37,980 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:20:37,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:20:37,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1216840336, now seen corresponding path program 1 times [2024-11-19 09:20:37,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:20:37,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73860728] [2024-11-19 09:20:37,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:20:37,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:20:37,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:20:38,141 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:20:38,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:20:38,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73860728] [2024-11-19 09:20:38,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73860728] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:20:38,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316872448] [2024-11-19 09:20:38,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:20:38,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:20:38,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:20:38,144 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) [2024-11-19 09:20:38,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 09:20:38,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:20:38,203 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 09:20:38,205 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:20:38,264 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:20:38,264 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:20:38,423 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:20:38,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316872448] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:20:38,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:20:38,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-19 09:20:38,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357888820] [2024-11-19 09:20:38,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:20:38,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 09:20:38,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:20:38,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 09:20:38,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2024-11-19 09:20:38,447 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-19 09:20:38,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 70 transitions, 908 flow. Second operand has 16 states, 16 states have (on average 10.125) internal successors, (162), 16 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:20:38,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:20:38,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-19 09:20:38,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:20:39,279 INFO L124 PetriNetUnfolderBase]: 1093/2114 cut-off events. [2024-11-19 09:20:39,279 INFO L125 PetriNetUnfolderBase]: For 73277/73277 co-relation queries the response was YES. [2024-11-19 09:20:39,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13414 conditions, 2114 events. 1093/2114 cut-off events. For 73277/73277 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 11488 event pairs, 94 based on Foata normal form. 72/2182 useless extension candidates. Maximal degree in co-relation 13362. Up to 409 conditions per place. [2024-11-19 09:20:39,302 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 86 selfloop transitions, 64 changer transitions 88/242 dead transitions. [2024-11-19 09:20:39,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 242 transitions, 3738 flow [2024-11-19 09:20:39,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-19 09:20:39,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-19 09:20:39,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 425 transitions. [2024-11-19 09:20:39,306 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5233990147783252 [2024-11-19 09:20:39,306 INFO L175 Difference]: Start difference. First operand has 116 places, 70 transitions, 908 flow. Second operand 28 states and 425 transitions. [2024-11-19 09:20:39,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 242 transitions, 3738 flow [2024-11-19 09:20:39,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 242 transitions, 3143 flow, removed 281 selfloop flow, removed 15 redundant places. [2024-11-19 09:20:39,381 INFO L231 Difference]: Finished difference. Result has 138 places, 92 transitions, 1417 flow [2024-11-19 09:20:39,382 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=660, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1417, PETRI_PLACES=138, PETRI_TRANSITIONS=92} [2024-11-19 09:20:39,382 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 108 predicate places. [2024-11-19 09:20:39,382 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 92 transitions, 1417 flow [2024-11-19 09:20:39,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.125) internal successors, (162), 16 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:20:39,383 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:20:39,383 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:20:39,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-19 09:20:39,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:20:39,588 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:20:39,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:20:39,588 INFO L85 PathProgramCache]: Analyzing trace with hash -974308042, now seen corresponding path program 2 times [2024-11-19 09:20:39,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:20:39,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345932049] [2024-11-19 09:20:39,589 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:20:39,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:20:39,598 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:20:39,598 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:20:39,733 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:20:39,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:20:39,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345932049] [2024-11-19 09:20:39,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345932049] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:20:39,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605820078] [2024-11-19 09:20:39,734 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:20:39,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:20:39,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:20:39,736 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) [2024-11-19 09:20:39,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 09:20:39,796 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:20:39,797 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:20:39,798 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-19 09:20:39,799 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:20:39,850 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:20:39,850 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:20:39,982 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:20:39,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605820078] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:20:39,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:20:39,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-11-19 09:20:39,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977573489] [2024-11-19 09:20:39,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:20:39,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 09:20:39,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:20:39,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 09:20:39,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2024-11-19 09:20:39,999 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-19 09:20:40,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 92 transitions, 1417 flow. Second operand has 18 states, 18 states have (on average 10.055555555555555) internal successors, (181), 18 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:20:40,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:20:40,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-19 09:20:40,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:20:41,197 INFO L124 PetriNetUnfolderBase]: 1399/2654 cut-off events. [2024-11-19 09:20:41,197 INFO L125 PetriNetUnfolderBase]: For 156808/156808 co-relation queries the response was YES. [2024-11-19 09:20:41,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19910 conditions, 2654 events. 1399/2654 cut-off events. For 156808/156808 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 14340 event pairs, 50 based on Foata normal form. 99/2749 useless extension candidates. Maximal degree in co-relation 19848. Up to 528 conditions per place. [2024-11-19 09:20:41,234 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 112 selfloop transitions, 95 changer transitions 113/324 dead transitions. [2024-11-19 09:20:41,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 324 transitions, 6002 flow [2024-11-19 09:20:41,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-19 09:20:41,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2024-11-19 09:20:41,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 551 transitions. [2024-11-19 09:20:41,238 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-11-19 09:20:41,240 INFO L175 Difference]: Start difference. First operand has 138 places, 92 transitions, 1417 flow. Second operand 36 states and 551 transitions. [2024-11-19 09:20:41,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 324 transitions, 6002 flow [2024-11-19 09:20:41,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 324 transitions, 5013 flow, removed 469 selfloop flow, removed 16 redundant places. [2024-11-19 09:20:41,400 INFO L231 Difference]: Finished difference. Result has 172 places, 120 transitions, 2180 flow [2024-11-19 09:20:41,401 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1016, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=2180, PETRI_PLACES=172, PETRI_TRANSITIONS=120} [2024-11-19 09:20:41,401 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 142 predicate places. [2024-11-19 09:20:41,402 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 120 transitions, 2180 flow [2024-11-19 09:20:41,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.055555555555555) internal successors, (181), 18 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:20:41,402 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:20:41,402 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:20:41,423 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 09:20:41,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:20:41,604 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:20:41,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:20:41,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1191975869, now seen corresponding path program 3 times [2024-11-19 09:20:41,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:20:41,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666456569] [2024-11-19 09:20:41,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:20:41,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:20:41,631 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-19 09:20:41,631 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:20:41,840 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:20:41,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:20:41,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666456569] [2024-11-19 09:20:41,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666456569] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:20:41,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863274362] [2024-11-19 09:20:41,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:20:41,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:20:41,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:20:41,846 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) [2024-11-19 09:20:41,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 09:20:41,907 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-19 09:20:41,907 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:20:41,909 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 09:20:41,911 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:20:42,006 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:20:42,007 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:20:42,193 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:20:42,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863274362] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:20:42,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:20:42,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 24 [2024-11-19 09:20:42,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172842759] [2024-11-19 09:20:42,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:20:42,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-19 09:20:42,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:20:42,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-19 09:20:42,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=474, Unknown=0, NotChecked=0, Total=600 [2024-11-19 09:20:42,219 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-19 09:20:42,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 120 transitions, 2180 flow. Second operand has 25 states, 25 states have (on average 10.08) internal successors, (252), 25 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:20:42,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:20:42,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-19 09:20:42,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:20:43,342 INFO L124 PetriNetUnfolderBase]: 1588/3016 cut-off events. [2024-11-19 09:20:43,342 INFO L125 PetriNetUnfolderBase]: For 237616/237616 co-relation queries the response was YES. [2024-11-19 09:20:43,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24190 conditions, 3016 events. 1588/3016 cut-off events. For 237616/237616 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 16055 event pairs, 93 based on Foata normal form. 36/3046 useless extension candidates. Maximal degree in co-relation 24113. Up to 564 conditions per place. [2024-11-19 09:20:43,379 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 113 selfloop transitions, 106 changer transitions 63/286 dead transitions. [2024-11-19 09:20:43,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 286 transitions, 5964 flow [2024-11-19 09:20:43,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-19 09:20:43,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-19 09:20:43,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 411 transitions. [2024-11-19 09:20:43,381 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.524904214559387 [2024-11-19 09:20:43,381 INFO L175 Difference]: Start difference. First operand has 172 places, 120 transitions, 2180 flow. Second operand 27 states and 411 transitions. [2024-11-19 09:20:43,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 286 transitions, 5964 flow [2024-11-19 09:20:43,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 286 transitions, 4585 flow, removed 655 selfloop flow, removed 24 redundant places. [2024-11-19 09:20:43,670 INFO L231 Difference]: Finished difference. Result has 177 places, 143 transitions, 2454 flow [2024-11-19 09:20:43,671 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1517, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2454, PETRI_PLACES=177, PETRI_TRANSITIONS=143} [2024-11-19 09:20:43,671 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 147 predicate places. [2024-11-19 09:20:43,672 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 143 transitions, 2454 flow [2024-11-19 09:20:43,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.08) internal successors, (252), 25 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:20:43,672 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:20:43,672 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:20:43,685 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 09:20:43,873 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,SelfDestructingSolverStorable10 [2024-11-19 09:20:43,873 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:20:43,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:20:43,874 INFO L85 PathProgramCache]: Analyzing trace with hash 934667656, now seen corresponding path program 4 times [2024-11-19 09:20:43,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:20:43,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305149651] [2024-11-19 09:20:43,874 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:20:43,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:20:43,886 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:20:43,887 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:20:43,954 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:20:43,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:20:43,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305149651] [2024-11-19 09:20:43,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305149651] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:20:43,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:20:43,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 09:20:43,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724323007] [2024-11-19 09:20:43,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:20:43,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 09:20:43,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:20:43,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 09:20:43,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-19 09:20:43,961 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 29 [2024-11-19 09:20:43,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 143 transitions, 2454 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:20:43,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:20:43,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 29 [2024-11-19 09:20:43,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:20:44,965 INFO L124 PetriNetUnfolderBase]: 2637/5428 cut-off events. [2024-11-19 09:20:44,965 INFO L125 PetriNetUnfolderBase]: For 250446/250819 co-relation queries the response was YES. [2024-11-19 09:20:45,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29427 conditions, 5428 events. 2637/5428 cut-off events. For 250446/250819 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 39900 event pairs, 153 based on Foata normal form. 80/4972 useless extension candidates. Maximal degree in co-relation 29351. Up to 1049 conditions per place. [2024-11-19 09:20:45,069 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 51 selfloop transitions, 11 changer transitions 66/188 dead transitions. [2024-11-19 09:20:45,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 188 transitions, 2494 flow [2024-11-19 09:20:45,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 09:20:45,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 09:20:45,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 161 transitions. [2024-11-19 09:20:45,071 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6939655172413793 [2024-11-19 09:20:45,071 INFO L175 Difference]: Start difference. First operand has 177 places, 143 transitions, 2454 flow. Second operand 8 states and 161 transitions. [2024-11-19 09:20:45,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 188 transitions, 2494 flow [2024-11-19 09:20:45,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 188 transitions, 2044 flow, removed 177 selfloop flow, removed 16 redundant places. [2024-11-19 09:20:45,293 INFO L231 Difference]: Finished difference. Result has 165 places, 81 transitions, 953 flow [2024-11-19 09:20:45,293 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1798, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=953, PETRI_PLACES=165, PETRI_TRANSITIONS=81} [2024-11-19 09:20:45,294 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 135 predicate places. [2024-11-19 09:20:45,294 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 81 transitions, 953 flow [2024-11-19 09:20:45,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:20:45,294 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:20:45,295 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:20:45,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 09:20:45,295 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:20:45,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:20:45,295 INFO L85 PathProgramCache]: Analyzing trace with hash -925238595, now seen corresponding path program 5 times [2024-11-19 09:20:45,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:20:45,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55222005] [2024-11-19 09:20:45,296 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:20:45,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:20:45,316 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-19 09:20:45,319 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:20:45,394 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:20:45,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:20:45,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55222005] [2024-11-19 09:20:45,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55222005] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:20:45,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:20:45,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 09:20:45,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840594723] [2024-11-19 09:20:45,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:20:45,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 09:20:45,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:20:45,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 09:20:45,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-19 09:20:45,400 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 29 [2024-11-19 09:20:45,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 81 transitions, 953 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:20:45,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:20:45,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 29 [2024-11-19 09:20:45,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:20:46,384 INFO L124 PetriNetUnfolderBase]: 3494/6423 cut-off events. [2024-11-19 09:20:46,385 INFO L125 PetriNetUnfolderBase]: For 213240/213830 co-relation queries the response was YES. [2024-11-19 09:20:46,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33631 conditions, 6423 events. 3494/6423 cut-off events. For 213240/213830 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 45945 event pairs, 258 based on Foata normal form. 66/5851 useless extension candidates. Maximal degree in co-relation 33566. Up to 1126 conditions per place. [2024-11-19 09:20:46,422 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 0 selfloop transitions, 0 changer transitions 159/159 dead transitions. [2024-11-19 09:20:46,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 159 transitions, 1391 flow [2024-11-19 09:20:46,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 09:20:46,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 09:20:46,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-11-19 09:20:46,423 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6293103448275862 [2024-11-19 09:20:46,423 INFO L175 Difference]: Start difference. First operand has 165 places, 81 transitions, 953 flow. Second operand 8 states and 146 transitions. [2024-11-19 09:20:46,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 159 transitions, 1391 flow [2024-11-19 09:20:46,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 159 transitions, 1079 flow, removed 66 selfloop flow, removed 41 redundant places. [2024-11-19 09:20:46,531 INFO L231 Difference]: Finished difference. Result has 112 places, 0 transitions, 0 flow [2024-11-19 09:20:46,531 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=112, PETRI_TRANSITIONS=0} [2024-11-19 09:20:46,532 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 82 predicate places. [2024-11-19 09:20:46,532 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 0 transitions, 0 flow [2024-11-19 09:20:46,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:20:46,535 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (3 of 4 remaining) [2024-11-19 09:20:46,536 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-11-19 09:20:46,536 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-11-19 09:20:46,536 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-19 09:20:46,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 09:20:46,536 INFO L407 BasicCegarLoop]: Path program histogram: [5, 2, 2, 2, 1, 1] [2024-11-19 09:20:46,539 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-19 09:20:46,540 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-19 09:20:46,548 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 09:20:46 BasicIcfg [2024-11-19 09:20:46,548 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-19 09:20:46,548 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-19 09:20:46,548 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-19 09:20:46,549 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-19 09:20:46,549 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:20:32" (3/4) ... [2024-11-19 09:20:46,552 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-19 09:20:46,556 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2024-11-19 09:20:46,556 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2024-11-19 09:20:46,561 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 33 nodes and edges [2024-11-19 09:20:46,562 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-19 09:20:46,562 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-19 09:20:46,562 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-19 09:20:46,650 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-19 09:20:46,651 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-19 09:20:46,651 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-19 09:20:46,651 INFO L158 Benchmark]: Toolchain (without parser) took 15505.75ms. Allocated memory was 157.3MB in the beginning and 572.5MB in the end (delta: 415.2MB). Free memory was 81.8MB in the beginning and 281.0MB in the end (delta: -199.2MB). Peak memory consumption was 217.7MB. Max. memory is 16.1GB. [2024-11-19 09:20:46,652 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 157.3MB. Free memory was 108.1MB in the beginning and 108.0MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 09:20:46,652 INFO L158 Benchmark]: CACSL2BoogieTranslator took 505.39ms. Allocated memory is still 157.3MB. Free memory was 81.6MB in the beginning and 124.8MB in the end (delta: -43.2MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-11-19 09:20:46,652 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.04ms. Allocated memory was 157.3MB in the beginning and 220.2MB in the end (delta: 62.9MB). Free memory was 124.7MB in the beginning and 189.0MB in the end (delta: -64.3MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. [2024-11-19 09:20:46,652 INFO L158 Benchmark]: Boogie Preprocessor took 47.73ms. Allocated memory is still 220.2MB. Free memory was 189.0MB in the beginning and 187.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-19 09:20:46,653 INFO L158 Benchmark]: RCFGBuilder took 507.27ms. Allocated memory is still 220.2MB. Free memory was 187.0MB in the beginning and 167.0MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-11-19 09:20:46,653 INFO L158 Benchmark]: TraceAbstraction took 14283.31ms. Allocated memory was 220.2MB in the beginning and 572.5MB in the end (delta: 352.3MB). Free memory was 166.0MB in the beginning and 285.2MB in the end (delta: -119.2MB). Peak memory consumption was 324.3MB. Max. memory is 16.1GB. [2024-11-19 09:20:46,653 INFO L158 Benchmark]: Witness Printer took 102.63ms. Allocated memory is still 572.5MB. Free memory was 285.2MB in the beginning and 281.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-19 09:20:46,656 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 157.3MB. Free memory was 108.1MB in the beginning and 108.0MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 505.39ms. Allocated memory is still 157.3MB. Free memory was 81.6MB in the beginning and 124.8MB in the end (delta: -43.2MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.04ms. Allocated memory was 157.3MB in the beginning and 220.2MB in the end (delta: 62.9MB). Free memory was 124.7MB in the beginning and 189.0MB in the end (delta: -64.3MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.73ms. Allocated memory is still 220.2MB. Free memory was 189.0MB in the beginning and 187.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 507.27ms. Allocated memory is still 220.2MB. Free memory was 187.0MB in the beginning and 167.0MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 14283.31ms. Allocated memory was 220.2MB in the beginning and 572.5MB in the end (delta: 352.3MB). Free memory was 166.0MB in the beginning and 285.2MB in the end (delta: -119.2MB). Peak memory consumption was 324.3MB. Max. memory is 16.1GB. * Witness Printer took 102.63ms. Allocated memory is still 572.5MB. Free memory was 285.2MB in the beginning and 281.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 711]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 693]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 38 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 14.2s, OverallIterations: 13, TraceHistogramMax: 6, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 9.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1815 SdHoareTripleChecker+Valid, 2.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1794 mSDsluCounter, 40 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 32 mSDsCounter, 118 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3161 IncrementalHoareTripleChecker+Invalid, 3279 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 118 mSolverCounterUnsat, 8 mSDtfsCounter, 3161 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 452 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1775 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2454occurred in iteration=11, InterpolantAutomatonStates: 201, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 408 NumberOfCodeBlocks, 405 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 507 ConstructedInterpolants, 0 QuantifiedInterpolants, 1800 SizeOfPredicates, 29 NumberOfNonLiveVariables, 500 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 23 InterpolantComputations, 8 PerfectInterpolantSequences, 132/306 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-19 09:20:46,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE