./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread/triangular-longest-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c7c6ca5d 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-longest-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 81809963fcaff21fd6241cde97e522447f695a8b323a0a16c5a31b7f82b0f683 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 10:22:23,739 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 10:22:23,821 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-09 10:22:23,827 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 10:22:23,828 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 10:22:23,860 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 10:22:23,862 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 10:22:23,863 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 10:22:23,863 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 10:22:23,865 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 10:22:23,865 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 10:22:23,865 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 10:22:23,866 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 10:22:23,868 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 10:22:23,868 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 10:22:23,869 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 10:22:23,869 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 10:22:23,869 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 10:22:23,870 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 10:22:23,870 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 10:22:23,870 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 10:22:23,874 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 10:22:23,875 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 10:22:23,875 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 10:22:23,875 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 10:22:23,876 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 10:22:23,876 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 10:22:23,876 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 10:22:23,876 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 10:22:23,877 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 10:22:23,877 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 10:22:23,877 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 10:22:23,877 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 10:22:23,878 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:22:23,878 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 10:22:23,878 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 10:22:23,878 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 10:22:23,879 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 10:22:23,879 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 10:22:23,879 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 10:22:23,879 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 10:22:23,881 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 10:22:23,882 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81809963fcaff21fd6241cde97e522447f695a8b323a0a16c5a31b7f82b0f683 [2024-11-09 10:22:24,153 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 10:22:24,175 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 10:22:24,179 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 10:22:24,180 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 10:22:24,181 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 10:22:24,182 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/triangular-longest-1.i [2024-11-09 10:22:25,678 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 10:22:25,901 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 10:22:25,902 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longest-1.i [2024-11-09 10:22:25,916 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8edb67c0/99dc432fa8134416ae270ed9f77e1ca0/FLAGeac20d180 [2024-11-09 10:22:25,927 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8edb67c0/99dc432fa8134416ae270ed9f77e1ca0 [2024-11-09 10:22:25,929 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 10:22:25,930 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 10:22:25,931 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 10:22:25,931 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 10:22:25,941 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 10:22:25,942 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:22:25" (1/1) ... [2024-11-09 10:22:25,942 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53086db6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:22:25, skipping insertion in model container [2024-11-09 10:22:25,943 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:22:25" (1/1) ... [2024-11-09 10:22:25,986 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 10:22:26,377 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:22:26,386 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 10:22:26,450 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:22:26,497 INFO L204 MainTranslator]: Completed translation [2024-11-09 10:22:26,497 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:22:26 WrapperNode [2024-11-09 10:22:26,497 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 10:22:26,498 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 10:22:26,499 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 10:22:26,500 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 10:22:26,507 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:22:26" (1/1) ... [2024-11-09 10:22:26,523 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:22:26" (1/1) ... [2024-11-09 10:22:26,548 INFO L138 Inliner]: procedures = 168, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 39 [2024-11-09 10:22:26,548 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 10:22:26,549 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 10:22:26,551 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 10:22:26,551 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 10:22:26,561 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:22:26" (1/1) ... [2024-11-09 10:22:26,561 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:22:26" (1/1) ... [2024-11-09 10:22:26,563 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:22:26" (1/1) ... [2024-11-09 10:22:26,584 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]. [2024-11-09 10:22:26,588 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:22:26" (1/1) ... [2024-11-09 10:22:26,589 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:22:26" (1/1) ... [2024-11-09 10:22:26,592 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:22:26" (1/1) ... [2024-11-09 10:22:26,595 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:22:26" (1/1) ... [2024-11-09 10:22:26,600 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:22:26" (1/1) ... [2024-11-09 10:22:26,602 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:22:26" (1/1) ... [2024-11-09 10:22:26,605 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 10:22:26,609 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 10:22:26,609 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 10:22:26,609 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 10:22:26,610 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:22:26" (1/1) ... [2024-11-09 10:22:26,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:22:26,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:22:26,649 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) [2024-11-09 10:22:26,655 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 [2024-11-09 10:22:26,698 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-09 10:22:26,698 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-09 10:22:26,698 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-09 10:22:26,699 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-09 10:22:26,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-09 10:22:26,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 10:22:26,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 10:22:26,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-09 10:22:26,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 10:22:26,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 10:22:26,701 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 10:22:26,921 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 10:22:26,927 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 10:22:27,102 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 10:22:27,103 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 10:22:27,208 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 10:22:27,212 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 10:22:27,213 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:22:27 BoogieIcfgContainer [2024-11-09 10:22:27,213 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 10:22:27,215 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 10:22:27,219 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 10:22:27,223 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 10:22:27,224 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:22:25" (1/3) ... [2024-11-09 10:22:27,224 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64db21b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:22:27, skipping insertion in model container [2024-11-09 10:22:27,225 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:22:26" (2/3) ... [2024-11-09 10:22:27,225 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64db21b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:22:27, skipping insertion in model container [2024-11-09 10:22:27,225 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:22:27" (3/3) ... [2024-11-09 10:22:27,227 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longest-1.i [2024-11-09 10:22:27,242 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 10:22:27,243 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-09 10:22:27,243 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 10:22:27,297 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 10:22:27,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 29 transitions, 66 flow [2024-11-09 10:22:27,374 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2024-11-09 10:22:27,374 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:22:27,380 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. [2024-11-09 10:22:27,380 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 29 transitions, 66 flow [2024-11-09 10:22:27,383 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 27 transitions, 60 flow [2024-11-09 10:22:27,394 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:22:27,400 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;@4ff8837, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:22:27,401 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-09 10:22:27,409 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 10:22:27,410 INFO L124 PetriNetUnfolderBase]: 4/24 cut-off events. [2024-11-09 10:22:27,410 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:22:27,410 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:22:27,411 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:22:27,412 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)] === [2024-11-09 10:22:27,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:22:27,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1038261642, now seen corresponding path program 1 times [2024-11-09 10:22:27,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:22:27,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439599762] [2024-11-09 10:22:27,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:22:27,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:22:27,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:22:27,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:22:27,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:22:27,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439599762] [2024-11-09 10:22:27,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439599762] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:22:27,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:22:27,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 10:22:27,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335055216] [2024-11-09 10:22:27,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:22:27,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:22:27,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:22:27,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:22:27,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:22:27,729 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 29 [2024-11-09 10:22:27,731 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) [2024-11-09 10:22:27,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:22:27,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 29 [2024-11-09 10:22:27,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:22:27,797 INFO L124 PetriNetUnfolderBase]: 70/157 cut-off events. [2024-11-09 10:22:27,799 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-09 10:22:27,801 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. [2024-11-09 10:22:27,803 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 11 selfloop transitions, 1 changer transitions 1/23 dead transitions. [2024-11-09 10:22:27,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 23 transitions, 78 flow [2024-11-09 10:22:27,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:22:27,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:22:27,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2024-11-09 10:22:27,814 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5977011494252874 [2024-11-09 10:22:27,815 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 60 flow. Second operand 3 states and 52 transitions. [2024-11-09 10:22:27,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 23 transitions, 78 flow [2024-11-09 10:22:27,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 23 transitions, 76 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 10:22:27,819 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 50 flow [2024-11-09 10:22:27,821 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} [2024-11-09 10:22:27,823 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, -2 predicate places. [2024-11-09 10:22:27,824 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 50 flow [2024-11-09 10:22:27,824 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) [2024-11-09 10:22:27,824 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:22:27,824 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:22:27,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 10:22:27,825 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)] === [2024-11-09 10:22:27,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:22:27,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1038262774, now seen corresponding path program 1 times [2024-11-09 10:22:27,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:22:27,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136614282] [2024-11-09 10:22:27,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:22:27,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:22:27,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:22:28,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:22:28,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:22:28,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136614282] [2024-11-09 10:22:28,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136614282] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:22:28,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:22:28,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 10:22:28,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536097549] [2024-11-09 10:22:28,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:22:28,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:22:28,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:22:28,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:22:28,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 10:22:28,105 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-09 10:22:28,106 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) [2024-11-09 10:22:28,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:22:28,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-09 10:22:28,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:22:28,324 INFO L124 PetriNetUnfolderBase]: 273/487 cut-off events. [2024-11-09 10:22:28,324 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:22:28,326 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. [2024-11-09 10:22:28,328 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 25 selfloop transitions, 4 changer transitions 21/54 dead transitions. [2024-11-09 10:22:28,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 54 transitions, 212 flow [2024-11-09 10:22:28,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 10:22:28,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 10:22:28,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2024-11-09 10:22:28,332 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5689655172413793 [2024-11-09 10:22:28,332 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 50 flow. Second operand 6 states and 99 transitions. [2024-11-09 10:22:28,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 54 transitions, 212 flow [2024-11-09 10:22:28,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 54 transitions, 211 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:22:28,336 INFO L231 Difference]: Finished difference. Result has 35 places, 23 transitions, 74 flow [2024-11-09 10:22:28,336 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} [2024-11-09 10:22:28,337 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2024-11-09 10:22:28,338 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 23 transitions, 74 flow [2024-11-09 10:22:28,338 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) [2024-11-09 10:22:28,338 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:22:28,338 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:22:28,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 10:22:28,339 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)] === [2024-11-09 10:22:28,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:22:28,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1117686194, now seen corresponding path program 1 times [2024-11-09 10:22:28,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:22:28,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156812240] [2024-11-09 10:22:28,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:22:28,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:22:28,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:22:28,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:22:28,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:22:28,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156812240] [2024-11-09 10:22:28,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156812240] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:22:28,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:22:28,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 10:22:28,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835917136] [2024-11-09 10:22:28,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:22:28,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 10:22:28,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:22:28,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 10:22:28,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 10:22:28,537 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-09 10:22:28,538 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) [2024-11-09 10:22:28,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:22:28,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-09 10:22:28,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:22:28,751 INFO L124 PetriNetUnfolderBase]: 382/704 cut-off events. [2024-11-09 10:22:28,752 INFO L125 PetriNetUnfolderBase]: For 276/276 co-relation queries the response was YES. [2024-11-09 10:22:28,757 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. [2024-11-09 10:22:28,762 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 46 selfloop transitions, 9 changer transitions 20/79 dead transitions. [2024-11-09 10:22:28,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 79 transitions, 382 flow [2024-11-09 10:22:28,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 10:22:28,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 10:22:28,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-11-09 10:22:28,766 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2024-11-09 10:22:28,766 INFO L175 Difference]: Start difference. First operand has 35 places, 23 transitions, 74 flow. Second operand 9 states and 144 transitions. [2024-11-09 10:22:28,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 79 transitions, 382 flow [2024-11-09 10:22:28,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 79 transitions, 366 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-11-09 10:22:28,774 INFO L231 Difference]: Finished difference. Result has 44 places, 32 transitions, 159 flow [2024-11-09 10:22:28,776 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} [2024-11-09 10:22:28,777 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 14 predicate places. [2024-11-09 10:22:28,777 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 32 transitions, 159 flow [2024-11-09 10:22:28,777 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) [2024-11-09 10:22:28,777 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:22:28,777 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:22:28,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 10:22:28,778 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)] === [2024-11-09 10:22:28,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:22:28,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1000674482, now seen corresponding path program 2 times [2024-11-09 10:22:28,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:22:28,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938203927] [2024-11-09 10:22:28,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:22:28,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:22:28,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:22:28,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:22:28,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:22:28,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938203927] [2024-11-09 10:22:28,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938203927] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:22:28,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:22:28,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 10:22:28,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354621309] [2024-11-09 10:22:28,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:22:28,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 10:22:28,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:22:28,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 10:22:28,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 10:22:28,924 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-09 10:22:28,924 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) [2024-11-09 10:22:28,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:22:28,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-09 10:22:28,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:22:29,152 INFO L124 PetriNetUnfolderBase]: 328/611 cut-off events. [2024-11-09 10:22:29,153 INFO L125 PetriNetUnfolderBase]: For 971/971 co-relation queries the response was YES. [2024-11-09 10:22:29,155 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. [2024-11-09 10:22:29,157 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 38 selfloop transitions, 9 changer transitions 28/79 dead transitions. [2024-11-09 10:22:29,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 79 transitions, 499 flow [2024-11-09 10:22:29,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 10:22:29,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 10:22:29,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-11-09 10:22:29,160 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5474137931034483 [2024-11-09 10:22:29,160 INFO L175 Difference]: Start difference. First operand has 44 places, 32 transitions, 159 flow. Second operand 8 states and 127 transitions. [2024-11-09 10:22:29,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 79 transitions, 499 flow [2024-11-09 10:22:29,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 79 transitions, 491 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-09 10:22:29,166 INFO L231 Difference]: Finished difference. Result has 51 places, 34 transitions, 213 flow [2024-11-09 10:22:29,166 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} [2024-11-09 10:22:29,168 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 21 predicate places. [2024-11-09 10:22:29,168 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 34 transitions, 213 flow [2024-11-09 10:22:29,169 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) [2024-11-09 10:22:29,169 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:22:29,170 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:22:29,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 10:22:29,171 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)] === [2024-11-09 10:22:29,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:22:29,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1356857717, now seen corresponding path program 1 times [2024-11-09 10:22:29,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:22:29,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51500861] [2024-11-09 10:22:29,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:22:29,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:22:29,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:22:29,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:22:29,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:22:29,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51500861] [2024-11-09 10:22:29,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51500861] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:22:29,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:22:29,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 10:22:29,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988812445] [2024-11-09 10:22:29,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:22:29,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 10:22:29,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:22:29,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 10:22:29,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 10:22:29,331 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-09 10:22:29,332 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) [2024-11-09 10:22:29,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:22:29,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-09 10:22:29,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:22:29,612 INFO L124 PetriNetUnfolderBase]: 337/620 cut-off events. [2024-11-09 10:22:29,612 INFO L125 PetriNetUnfolderBase]: For 1649/1649 co-relation queries the response was YES. [2024-11-09 10:22:29,615 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. [2024-11-09 10:22:29,618 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 46 selfloop transitions, 16 changer transitions 24/90 dead transitions. [2024-11-09 10:22:29,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 90 transitions, 610 flow [2024-11-09 10:22:29,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 10:22:29,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 10:22:29,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 168 transitions. [2024-11-09 10:22:29,622 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5266457680250783 [2024-11-09 10:22:29,622 INFO L175 Difference]: Start difference. First operand has 51 places, 34 transitions, 213 flow. Second operand 11 states and 168 transitions. [2024-11-09 10:22:29,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 90 transitions, 610 flow [2024-11-09 10:22:29,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 90 transitions, 543 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-11-09 10:22:29,634 INFO L231 Difference]: Finished difference. Result has 56 places, 40 transitions, 282 flow [2024-11-09 10:22:29,634 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} [2024-11-09 10:22:29,635 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 26 predicate places. [2024-11-09 10:22:29,636 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 40 transitions, 282 flow [2024-11-09 10:22:29,636 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) [2024-11-09 10:22:29,637 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:22:29,637 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:22:29,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 10:22:29,637 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)] === [2024-11-09 10:22:29,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:22:29,638 INFO L85 PathProgramCache]: Analyzing trace with hash 392343623, now seen corresponding path program 2 times [2024-11-09 10:22:29,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:22:29,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771132683] [2024-11-09 10:22:29,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:22:29,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:22:29,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:22:29,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:22:29,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:22:29,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771132683] [2024-11-09 10:22:29,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771132683] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:22:29,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:22:29,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 10:22:29,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000351671] [2024-11-09 10:22:29,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:22:29,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 10:22:29,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:22:29,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 10:22:29,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 10:22:29,798 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-09 10:22:29,798 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) [2024-11-09 10:22:29,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:22:29,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-09 10:22:29,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:22:30,079 INFO L124 PetriNetUnfolderBase]: 445/807 cut-off events. [2024-11-09 10:22:30,079 INFO L125 PetriNetUnfolderBase]: For 2473/2473 co-relation queries the response was YES. [2024-11-09 10:22:30,082 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. [2024-11-09 10:22:30,085 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 44 selfloop transitions, 23 changer transitions 30/101 dead transitions. [2024-11-09 10:22:30,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 101 transitions, 742 flow [2024-11-09 10:22:30,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 10:22:30,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 10:22:30,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-11-09 10:22:30,087 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5360501567398119 [2024-11-09 10:22:30,087 INFO L175 Difference]: Start difference. First operand has 56 places, 40 transitions, 282 flow. Second operand 11 states and 171 transitions. [2024-11-09 10:22:30,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 101 transitions, 742 flow [2024-11-09 10:22:30,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 101 transitions, 688 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-11-09 10:22:30,098 INFO L231 Difference]: Finished difference. Result has 67 places, 46 transitions, 393 flow [2024-11-09 10:22:30,099 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} [2024-11-09 10:22:30,099 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 37 predicate places. [2024-11-09 10:22:30,100 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 46 transitions, 393 flow [2024-11-09 10:22:30,100 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) [2024-11-09 10:22:30,100 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:22:30,100 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:22:30,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 10:22:30,101 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)] === [2024-11-09 10:22:30,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:22:30,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1383133169, now seen corresponding path program 1 times [2024-11-09 10:22:30,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:22:30,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947413185] [2024-11-09 10:22:30,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:22:30,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:22:30,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:22:30,233 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:22:30,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:22:30,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947413185] [2024-11-09 10:22:30,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947413185] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:22:30,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732528180] [2024-11-09 10:22:30,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:22:30,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:22:30,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:22:30,238 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) [2024-11-09 10:22:30,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 10:22:30,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:22:30,305 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 10:22:30,312 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:22:30,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:22:30,393 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:22:30,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:22:30,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732528180] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:22:30,563 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:22:30,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-09 10:22:30,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480324172] [2024-11-09 10:22:30,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:22:30,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 10:22:30,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:22:30,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 10:22:30,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-09 10:22:30,580 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-09 10:22:30,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 46 transitions, 393 flow. Second operand has 13 states, 13 states have (on average 10.076923076923077) internal successors, (131), 13 states have internal predecessors, (131), 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) [2024-11-09 10:22:30,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:22:30,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-09 10:22:30,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:22:31,085 INFO L124 PetriNetUnfolderBase]: 571/1058 cut-off events. [2024-11-09 10:22:31,086 INFO L125 PetriNetUnfolderBase]: For 6872/6872 co-relation queries the response was YES. [2024-11-09 10:22:31,089 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. [2024-11-09 10:22:31,093 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 64 selfloop transitions, 17 changer transitions 67/152 dead transitions. [2024-11-09 10:22:31,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 152 transitions, 1349 flow [2024-11-09 10:22:31,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-09 10:22:31,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-09 10:22:31,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 288 transitions. [2024-11-09 10:22:31,095 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5226860254083484 [2024-11-09 10:22:31,096 INFO L175 Difference]: Start difference. First operand has 67 places, 46 transitions, 393 flow. Second operand 19 states and 288 transitions. [2024-11-09 10:22:31,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 152 transitions, 1349 flow [2024-11-09 10:22:31,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 152 transitions, 1270 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-11-09 10:22:31,108 INFO L231 Difference]: Finished difference. Result has 90 places, 52 transitions, 524 flow [2024-11-09 10:22:31,108 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} [2024-11-09 10:22:31,109 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 60 predicate places. [2024-11-09 10:22:31,109 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 52 transitions, 524 flow [2024-11-09 10:22:31,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.076923076923077) internal successors, (131), 13 states have internal predecessors, (131), 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) [2024-11-09 10:22:31,109 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:22:31,110 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:22:31,126 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 10:22:31,313 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 [2024-11-09 10:22:31,314 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)] === [2024-11-09 10:22:31,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:22:31,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1985942713, now seen corresponding path program 2 times [2024-11-09 10:22:31,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:22:31,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779584416] [2024-11-09 10:22:31,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:22:31,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:22:31,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:22:31,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:22:31,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:22:31,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779584416] [2024-11-09 10:22:31,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779584416] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:22:31,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028832394] [2024-11-09 10:22:31,426 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 10:22:31,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:22:31,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:22:31,428 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) [2024-11-09 10:22:31,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 10:22:31,487 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 10:22:31,488 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:22:31,489 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 10:22:31,490 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:22:31,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:22:31,530 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:22:31,668 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:22:31,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028832394] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:22:31,669 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:22:31,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-09 10:22:31,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313578222] [2024-11-09 10:22:31,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:22:31,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 10:22:31,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:22:31,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 10:22:31,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-11-09 10:22:31,694 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-09 10:22:31,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 52 transitions, 524 flow. Second operand has 13 states, 13 states have (on average 10.076923076923077) internal successors, (131), 13 states have internal predecessors, (131), 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) [2024-11-09 10:22:31,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:22:31,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-09 10:22:31,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:22:32,428 INFO L124 PetriNetUnfolderBase]: 877/1628 cut-off events. [2024-11-09 10:22:32,430 INFO L125 PetriNetUnfolderBase]: For 29480/29480 co-relation queries the response was YES. [2024-11-09 10:22:32,438 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 7910 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. [2024-11-09 10:22:32,448 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 88 selfloop transitions, 46 changer transitions 80/218 dead transitions. [2024-11-09 10:22:32,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 218 transitions, 2565 flow [2024-11-09 10:22:32,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-09 10:22:32,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-09 10:22:32,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 415 transitions. [2024-11-09 10:22:32,452 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5300127713920817 [2024-11-09 10:22:32,452 INFO L175 Difference]: Start difference. First operand has 90 places, 52 transitions, 524 flow. Second operand 27 states and 415 transitions. [2024-11-09 10:22:32,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 218 transitions, 2565 flow [2024-11-09 10:22:32,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 218 transitions, 2089 flow, removed 227 selfloop flow, removed 12 redundant places. [2024-11-09 10:22:32,483 INFO L231 Difference]: Finished difference. Result has 116 places, 70 transitions, 908 flow [2024-11-09 10:22:32,484 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} [2024-11-09 10:22:32,484 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 86 predicate places. [2024-11-09 10:22:32,484 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 70 transitions, 908 flow [2024-11-09 10:22:32,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.076923076923077) internal successors, (131), 13 states have internal predecessors, (131), 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) [2024-11-09 10:22:32,485 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:22:32,485 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:22:32,504 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 10:22:32,685 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 [2024-11-09 10:22:32,686 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)] === [2024-11-09 10:22:32,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:22:32,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1216840336, now seen corresponding path program 1 times [2024-11-09 10:22:32,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:22:32,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113345055] [2024-11-09 10:22:32,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:22:32,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:22:32,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:22:32,831 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:22:32,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:22:32,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113345055] [2024-11-09 10:22:32,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113345055] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:22:32,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168746780] [2024-11-09 10:22:32,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:22:32,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:22:32,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:22:32,836 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) [2024-11-09 10:22:32,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 10:22:32,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:22:32,889 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 10:22:32,891 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:22:32,962 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:22:32,963 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:22:33,107 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:22:33,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168746780] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:22:33,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:22:33,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-09 10:22:33,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193834516] [2024-11-09 10:22:33,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:22:33,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 10:22:33,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:22:33,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 10:22:33,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2024-11-09 10:22:33,139 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-09 10:22:33,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 70 transitions, 908 flow. Second operand has 16 states, 16 states have (on average 10.1875) internal successors, (163), 16 states have internal predecessors, (163), 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) [2024-11-09 10:22:33,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:22:33,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-09 10:22:33,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:22:33,983 INFO L124 PetriNetUnfolderBase]: 1093/2114 cut-off events. [2024-11-09 10:22:33,983 INFO L125 PetriNetUnfolderBase]: For 73277/73277 co-relation queries the response was YES. [2024-11-09 10:22:33,992 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 11477 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. [2024-11-09 10:22:34,003 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 86 selfloop transitions, 64 changer transitions 88/242 dead transitions. [2024-11-09 10:22:34,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 242 transitions, 3738 flow [2024-11-09 10:22:34,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-09 10:22:34,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-09 10:22:34,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 425 transitions. [2024-11-09 10:22:34,007 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5233990147783252 [2024-11-09 10:22:34,007 INFO L175 Difference]: Start difference. First operand has 116 places, 70 transitions, 908 flow. Second operand 28 states and 425 transitions. [2024-11-09 10:22:34,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 242 transitions, 3738 flow [2024-11-09 10:22:34,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 242 transitions, 3143 flow, removed 281 selfloop flow, removed 15 redundant places. [2024-11-09 10:22:34,091 INFO L231 Difference]: Finished difference. Result has 138 places, 92 transitions, 1417 flow [2024-11-09 10:22:34,092 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} [2024-11-09 10:22:34,093 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 108 predicate places. [2024-11-09 10:22:34,093 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 92 transitions, 1417 flow [2024-11-09 10:22:34,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.1875) internal successors, (163), 16 states have internal predecessors, (163), 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) [2024-11-09 10:22:34,093 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:22:34,093 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:22:34,111 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 10:22:34,294 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 [2024-11-09 10:22:34,294 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)] === [2024-11-09 10:22:34,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:22:34,295 INFO L85 PathProgramCache]: Analyzing trace with hash -974308042, now seen corresponding path program 2 times [2024-11-09 10:22:34,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:22:34,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086012000] [2024-11-09 10:22:34,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:22:34,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:22:34,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:22:34,429 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:22:34,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:22:34,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086012000] [2024-11-09 10:22:34,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086012000] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:22:34,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238769223] [2024-11-09 10:22:34,430 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 10:22:34,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:22:34,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:22:34,432 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) [2024-11-09 10:22:34,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 10:22:34,489 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 10:22:34,490 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:22:34,490 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 10:22:34,492 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:22:34,544 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:22:34,545 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:22:34,674 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:22:34,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238769223] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:22:34,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:22:34,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-11-09 10:22:34,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51563066] [2024-11-09 10:22:34,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:22:34,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 10:22:34,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:22:34,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 10:22:34,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2024-11-09 10:22:34,689 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-09 10:22:34,690 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) [2024-11-09 10:22:34,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:22:34,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-09 10:22:34,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:22:35,940 INFO L124 PetriNetUnfolderBase]: 1399/2654 cut-off events. [2024-11-09 10:22:35,940 INFO L125 PetriNetUnfolderBase]: For 156808/156808 co-relation queries the response was YES. [2024-11-09 10:22:35,956 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 14342 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. [2024-11-09 10:22:35,972 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 112 selfloop transitions, 95 changer transitions 113/324 dead transitions. [2024-11-09 10:22:35,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 324 transitions, 6002 flow [2024-11-09 10:22:35,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-09 10:22:35,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2024-11-09 10:22:35,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 551 transitions. [2024-11-09 10:22:35,975 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-11-09 10:22:35,975 INFO L175 Difference]: Start difference. First operand has 138 places, 92 transitions, 1417 flow. Second operand 36 states and 551 transitions. [2024-11-09 10:22:35,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 324 transitions, 6002 flow [2024-11-09 10:22:36,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 324 transitions, 5013 flow, removed 469 selfloop flow, removed 16 redundant places. [2024-11-09 10:22:36,129 INFO L231 Difference]: Finished difference. Result has 172 places, 120 transitions, 2180 flow [2024-11-09 10:22:36,130 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} [2024-11-09 10:22:36,130 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 142 predicate places. [2024-11-09 10:22:36,130 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 120 transitions, 2180 flow [2024-11-09 10:22:36,131 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) [2024-11-09 10:22:36,131 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:22:36,131 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:22:36,149 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 10:22:36,331 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 [2024-11-09 10:22:36,332 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)] === [2024-11-09 10:22:36,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:22:36,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1191975869, now seen corresponding path program 3 times [2024-11-09 10:22:36,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:22:36,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958968401] [2024-11-09 10:22:36,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:22:36,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:22:36,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:22:36,541 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:22:36,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:22:36,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958968401] [2024-11-09 10:22:36,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958968401] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:22:36,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894278149] [2024-11-09 10:22:36,543 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 10:22:36,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:22:36,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:22:36,546 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) [2024-11-09 10:22:36,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 10:22:36,645 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-09 10:22:36,646 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:22:36,647 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 10:22:36,649 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:22:36,736 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:22:36,736 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:22:36,928 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:22:36,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894278149] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:22:36,929 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:22:36,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 24 [2024-11-09 10:22:36,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77730071] [2024-11-09 10:22:36,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:22:36,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 10:22:36,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:22:36,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 10:22:36,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2024-11-09 10:22:36,951 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-09 10:22:36,952 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) [2024-11-09 10:22:36,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:22:36,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-09 10:22:36,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:22:38,937 INFO L124 PetriNetUnfolderBase]: 2155/3997 cut-off events. [2024-11-09 10:22:38,937 INFO L125 PetriNetUnfolderBase]: For 362028/362028 co-relation queries the response was YES. [2024-11-09 10:22:38,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35269 conditions, 3997 events. 2155/3997 cut-off events. For 362028/362028 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 20245 event pairs, 77 based on Foata normal form. 99/4090 useless extension candidates. Maximal degree in co-relation 35192. Up to 843 conditions per place. [2024-11-09 10:22:38,992 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 156 selfloop transitions, 141 changer transitions 146/447 dead transitions. [2024-11-09 10:22:38,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 447 transitions, 10132 flow [2024-11-09 10:22:38,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-09 10:22:38,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2024-11-09 10:22:38,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 749 transitions. [2024-11-09 10:22:38,995 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5270935960591133 [2024-11-09 10:22:38,995 INFO L175 Difference]: Start difference. First operand has 172 places, 120 transitions, 2180 flow. Second operand 49 states and 749 transitions. [2024-11-09 10:22:38,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 447 transitions, 10132 flow [2024-11-09 10:22:39,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 447 transitions, 8115 flow, removed 974 selfloop flow, removed 24 redundant places. [2024-11-09 10:22:39,341 INFO L231 Difference]: Finished difference. Result has 218 places, 170 transitions, 3457 flow [2024-11-09 10:22:39,342 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=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=3457, PETRI_PLACES=218, PETRI_TRANSITIONS=170} [2024-11-09 10:22:39,342 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 188 predicate places. [2024-11-09 10:22:39,343 INFO L471 AbstractCegarLoop]: Abstraction has has 218 places, 170 transitions, 3457 flow [2024-11-09 10:22:39,343 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) [2024-11-09 10:22:39,343 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:22:39,343 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:22:39,358 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 10:22:39,547 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 [2024-11-09 10:22:39,548 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)] === [2024-11-09 10:22:39,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:22:39,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1711202446, now seen corresponding path program 4 times [2024-11-09 10:22:39,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:22:39,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846746342] [2024-11-09 10:22:39,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:22:39,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:22:39,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:22:40,084 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:22:40,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:22:40,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846746342] [2024-11-09 10:22:40,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846746342] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:22:40,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760241623] [2024-11-09 10:22:40,085 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 10:22:40,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:22:40,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:22:40,087 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:22:40,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 10:22:40,158 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 10:22:40,158 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:22:40,160 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-09 10:22:40,162 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:22:40,380 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:22:40,381 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:22:40,978 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:22:40,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760241623] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:22:40,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:22:40,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 40 [2024-11-09 10:22:40,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512314009] [2024-11-09 10:22:40,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:22:40,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-09 10:22:40,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:22:40,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-09 10:22:40,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=397, Invalid=1243, Unknown=0, NotChecked=0, Total=1640 [2024-11-09 10:22:41,025 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-09 10:22:41,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 170 transitions, 3457 flow. Second operand has 41 states, 41 states have (on average 10.146341463414634) internal successors, (416), 41 states have internal predecessors, (416), 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) [2024-11-09 10:22:41,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:22:41,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-09 10:22:41,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:22:43,639 INFO L124 PetriNetUnfolderBase]: 2677/5129 cut-off events. [2024-11-09 10:22:43,639 INFO L125 PetriNetUnfolderBase]: For 813491/813491 co-relation queries the response was YES. [2024-11-09 10:22:43,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55316 conditions, 5129 events. 2677/5129 cut-off events. For 813491/813491 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 26062 event pairs, 857 based on Foata normal form. 189/5314 useless extension candidates. Maximal degree in co-relation 55221. Up to 3024 conditions per place. [2024-11-09 10:22:43,691 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 267 selfloop transitions, 55 changer transitions 221/547 dead transitions. [2024-11-09 10:22:43,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 547 transitions, 15947 flow [2024-11-09 10:22:43,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-11-09 10:22:43,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2024-11-09 10:22:43,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 904 transitions. [2024-11-09 10:22:43,696 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5110231769361221 [2024-11-09 10:22:43,696 INFO L175 Difference]: Start difference. First operand has 218 places, 170 transitions, 3457 flow. Second operand 61 states and 904 transitions. [2024-11-09 10:22:43,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 547 transitions, 15947 flow [2024-11-09 10:22:44,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 547 transitions, 12512 flow, removed 1679 selfloop flow, removed 21 redundant places. [2024-11-09 10:22:44,442 INFO L231 Difference]: Finished difference. Result has 293 places, 208 transitions, 4380 flow [2024-11-09 10:22:44,442 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=2346, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=61, PETRI_FLOW=4380, PETRI_PLACES=293, PETRI_TRANSITIONS=208} [2024-11-09 10:22:44,443 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 263 predicate places. [2024-11-09 10:22:44,443 INFO L471 AbstractCegarLoop]: Abstraction has has 293 places, 208 transitions, 4380 flow [2024-11-09 10:22:44,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 10.146341463414634) internal successors, (416), 41 states have internal predecessors, (416), 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) [2024-11-09 10:22:44,443 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:22:44,444 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:22:44,458 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 10:22:44,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:22:44,645 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)] === [2024-11-09 10:22:44,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:22:44,645 INFO L85 PathProgramCache]: Analyzing trace with hash -344593532, now seen corresponding path program 5 times [2024-11-09 10:22:44,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:22:44,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932902494] [2024-11-09 10:22:44,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:22:44,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:22:44,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:22:45,056 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:22:45,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:22:45,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932902494] [2024-11-09 10:22:45,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932902494] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:22:45,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114287709] [2024-11-09 10:22:45,057 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 10:22:45,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:22:45,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:22:45,059 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:22:45,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 10:22:45,120 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-11-09 10:22:45,120 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:22:45,122 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-09 10:22:45,124 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:22:45,278 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:22:45,278 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:22:45,814 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:22:45,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114287709] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:22:45,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:22:45,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 40 [2024-11-09 10:22:45,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513614432] [2024-11-09 10:22:45,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:22:45,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-09 10:22:45,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:22:45,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-09 10:22:45,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=352, Invalid=1288, Unknown=0, NotChecked=0, Total=1640 [2024-11-09 10:22:45,828 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-09 10:22:45,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 208 transitions, 4380 flow. Second operand has 41 states, 41 states have (on average 10.146341463414634) internal successors, (416), 41 states have internal predecessors, (416), 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) [2024-11-09 10:22:45,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:22:45,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-09 10:22:45,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:22:49,156 INFO L124 PetriNetUnfolderBase]: 3397/6755 cut-off events. [2024-11-09 10:22:49,157 INFO L125 PetriNetUnfolderBase]: For 1581849/1581849 co-relation queries the response was YES. [2024-11-09 10:22:49,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82592 conditions, 6755 events. 3397/6755 cut-off events. For 1581849/1581849 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 38314 event pairs, 586 based on Foata normal form. 189/6940 useless extension candidates. Maximal degree in co-relation 82462. Up to 2191 conditions per place. [2024-11-09 10:22:49,243 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 252 selfloop transitions, 176 changer transitions 235/667 dead transitions. [2024-11-09 10:22:49,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 667 transitions, 20915 flow [2024-11-09 10:22:49,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-11-09 10:22:49,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2024-11-09 10:22:49,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 1011 transitions. [2024-11-09 10:22:49,247 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5126774847870182 [2024-11-09 10:22:49,247 INFO L175 Difference]: Start difference. First operand has 293 places, 208 transitions, 4380 flow. Second operand 68 states and 1011 transitions. [2024-11-09 10:22:49,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 667 transitions, 20915 flow [2024-11-09 10:22:52,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 667 transitions, 17561 flow, removed 1663 selfloop flow, removed 31 redundant places. [2024-11-09 10:22:52,459 INFO L231 Difference]: Finished difference. Result has 349 places, 287 transitions, 6675 flow [2024-11-09 10:22:52,460 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=3086, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=68, PETRI_FLOW=6675, PETRI_PLACES=349, PETRI_TRANSITIONS=287} [2024-11-09 10:22:52,461 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 319 predicate places. [2024-11-09 10:22:52,461 INFO L471 AbstractCegarLoop]: Abstraction has has 349 places, 287 transitions, 6675 flow [2024-11-09 10:22:52,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 10.146341463414634) internal successors, (416), 41 states have internal predecessors, (416), 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) [2024-11-09 10:22:52,461 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:22:52,462 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:22:52,478 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 10:22:52,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:22:52,666 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:22:52,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:22:52,666 INFO L85 PathProgramCache]: Analyzing trace with hash -2036285016, now seen corresponding path program 6 times [2024-11-09 10:22:52,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:22:52,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045913613] [2024-11-09 10:22:52,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:22:52,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:22:52,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:22:53,077 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:22:53,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:22:53,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045913613] [2024-11-09 10:22:53,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045913613] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:22:53,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417023303] [2024-11-09 10:22:53,078 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 10:22:53,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:22:53,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:22:53,080 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:22:53,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 10:22:53,148 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-11-09 10:22:53,148 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:22:53,149 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-09 10:22:53,151 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:22:53,305 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 1 proven. 200 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:22:53,305 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:22:53,794 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:22:53,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417023303] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:22:53,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:22:53,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 41 [2024-11-09 10:22:53,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70083125] [2024-11-09 10:22:53,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:22:53,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-09 10:22:53,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:22:53,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-09 10:22:53,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=1420, Unknown=0, NotChecked=0, Total=1722 [2024-11-09 10:22:53,815 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-09 10:22:53,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 287 transitions, 6675 flow. Second operand has 42 states, 42 states have (on average 10.166666666666666) internal successors, (427), 42 states have internal predecessors, (427), 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) [2024-11-09 10:22:53,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:22:53,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-09 10:22:53,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:22:58,417 INFO L124 PetriNetUnfolderBase]: 4333/8861 cut-off events. [2024-11-09 10:22:58,417 INFO L125 PetriNetUnfolderBase]: For 2948158/2948158 co-relation queries the response was YES. [2024-11-09 10:22:58,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122766 conditions, 8861 events. 4333/8861 cut-off events. For 2948158/2948158 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 55486 event pairs, 214 based on Foata normal form. 189/9046 useless extension candidates. Maximal degree in co-relation 122615. Up to 2301 conditions per place. [2024-11-09 10:22:58,532 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 222 selfloop transitions, 338 changer transitions 249/813 dead transitions. [2024-11-09 10:22:58,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 813 transitions, 28538 flow [2024-11-09 10:22:58,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-11-09 10:22:58,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2024-11-09 10:22:58,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 1123 transitions. [2024-11-09 10:22:58,537 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5163218390804598 [2024-11-09 10:22:58,537 INFO L175 Difference]: Start difference. First operand has 349 places, 287 transitions, 6675 flow. Second operand 75 states and 1123 transitions. [2024-11-09 10:22:58,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 813 transitions, 28538 flow [2024-11-09 10:23:04,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 813 transitions, 24143 flow, removed 2164 selfloop flow, removed 35 redundant places. [2024-11-09 10:23:04,973 INFO L231 Difference]: Finished difference. Result has 413 places, 390 transitions, 10130 flow [2024-11-09 10:23:04,974 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=5000, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=243, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=75, PETRI_FLOW=10130, PETRI_PLACES=413, PETRI_TRANSITIONS=390} [2024-11-09 10:23:04,974 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 383 predicate places. [2024-11-09 10:23:04,974 INFO L471 AbstractCegarLoop]: Abstraction has has 413 places, 390 transitions, 10130 flow [2024-11-09 10:23:04,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 10.166666666666666) internal successors, (427), 42 states have internal predecessors, (427), 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) [2024-11-09 10:23:04,975 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:23:04,975 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:23:04,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-09 10:23:05,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-09 10:23:05,176 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:23:05,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:23:05,176 INFO L85 PathProgramCache]: Analyzing trace with hash -265129074, now seen corresponding path program 7 times [2024-11-09 10:23:05,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:23:05,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995487297] [2024-11-09 10:23:05,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:23:05,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:23:05,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:23:05,536 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 202 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:23:05,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:23:05,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995487297] [2024-11-09 10:23:05,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995487297] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:23:05,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913978802] [2024-11-09 10:23:05,538 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 10:23:05,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:23:05,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:23:05,540 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:23:05,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 10:23:05,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:23:05,604 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-09 10:23:05,606 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:23:05,711 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 202 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:23:05,712 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:23:06,120 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 202 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:23:06,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913978802] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:23:06,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:23:06,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 40 [2024-11-09 10:23:06,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107224498] [2024-11-09 10:23:06,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:23:06,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-09 10:23:06,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:23:06,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-09 10:23:06,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=1333, Unknown=0, NotChecked=0, Total=1640 [2024-11-09 10:23:06,144 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-09 10:23:06,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 390 transitions, 10130 flow. Second operand has 41 states, 41 states have (on average 10.146341463414634) internal successors, (416), 41 states have internal predecessors, (416), 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) [2024-11-09 10:23:06,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:23:06,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-09 10:23:06,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:23:12,618 INFO L124 PetriNetUnfolderBase]: 6196/12388 cut-off events. [2024-11-09 10:23:12,618 INFO L125 PetriNetUnfolderBase]: For 5789349/5789349 co-relation queries the response was YES. [2024-11-09 10:23:12,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194940 conditions, 12388 events. 6196/12388 cut-off events. For 5789349/5789349 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 81335 event pairs, 84 based on Foata normal form. 189/12573 useless extension candidates. Maximal degree in co-relation 194763. Up to 3168 conditions per place. [2024-11-09 10:23:13,020 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 273 selfloop transitions, 495 changer transitions 259/1031 dead transitions. [2024-11-09 10:23:13,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 1031 transitions, 40714 flow [2024-11-09 10:23:13,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2024-11-09 10:23:13,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2024-11-09 10:23:13,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 1339 transitions. [2024-11-09 10:23:13,024 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5246865203761756 [2024-11-09 10:23:13,024 INFO L175 Difference]: Start difference. First operand has 413 places, 390 transitions, 10130 flow. Second operand 88 states and 1339 transitions. [2024-11-09 10:23:13,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 1031 transitions, 40714 flow [2024-11-09 10:23:25,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 1031 transitions, 30481 flow, removed 5045 selfloop flow, removed 40 redundant places. [2024-11-09 10:23:25,112 INFO L231 Difference]: Finished difference. Result has 494 places, 526 transitions, 14527 flow [2024-11-09 10:23:25,113 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=7469, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=362, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=14527, PETRI_PLACES=494, PETRI_TRANSITIONS=526} [2024-11-09 10:23:25,113 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 464 predicate places. [2024-11-09 10:23:25,113 INFO L471 AbstractCegarLoop]: Abstraction has has 494 places, 526 transitions, 14527 flow [2024-11-09 10:23:25,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 10.146341463414634) internal successors, (416), 41 states have internal predecessors, (416), 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) [2024-11-09 10:23:25,114 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:23:25,114 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:23:25,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-09 10:23:25,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 10:23:25,315 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:23:25,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:23:25,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1934244445, now seen corresponding path program 8 times [2024-11-09 10:23:25,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:23:25,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892669053] [2024-11-09 10:23:25,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:23:25,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:23:25,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:23:25,778 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:23:25,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:23:25,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892669053] [2024-11-09 10:23:25,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892669053] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:23:25,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677503381] [2024-11-09 10:23:25,780 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 10:23:25,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:23:25,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:23:25,782 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:23:25,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 10:23:25,852 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 10:23:25,852 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:23:25,854 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-09 10:23:25,856 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:23:25,982 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:23:25,983 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:23:26,460 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:23:26,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677503381] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:23:26,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:23:26,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 46 [2024-11-09 10:23:26,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176387567] [2024-11-09 10:23:26,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:23:26,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-09 10:23:26,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:23:26,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-09 10:23:26,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=501, Invalid=1661, Unknown=0, NotChecked=0, Total=2162 [2024-11-09 10:23:26,501 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-09 10:23:26,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 526 transitions, 14527 flow. Second operand has 47 states, 47 states have (on average 10.106382978723405) internal successors, (475), 47 states have internal predecessors, (475), 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) [2024-11-09 10:23:26,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:23:26,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-09 10:23:26,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:23:36,876 INFO L124 PetriNetUnfolderBase]: 7699/15444 cut-off events. [2024-11-09 10:23:36,877 INFO L125 PetriNetUnfolderBase]: For 8499145/8499145 co-relation queries the response was YES. [2024-11-09 10:23:37,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260119 conditions, 15444 events. 7699/15444 cut-off events. For 8499145/8499145 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 101189 event pairs, 38 based on Foata normal form. 306/15746 useless extension candidates. Maximal degree in co-relation 259907. Up to 3912 conditions per place. [2024-11-09 10:23:37,185 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 326 selfloop transitions, 621 changer transitions 325/1276 dead transitions. [2024-11-09 10:23:37,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 578 places, 1276 transitions, 56634 flow [2024-11-09 10:23:37,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2024-11-09 10:23:37,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2024-11-09 10:23:37,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 1613 transitions. [2024-11-09 10:23:37,189 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5247234873129473 [2024-11-09 10:23:37,189 INFO L175 Difference]: Start difference. First operand has 494 places, 526 transitions, 14527 flow. Second operand 106 states and 1613 transitions. [2024-11-09 10:23:37,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 578 places, 1276 transitions, 56634 flow