./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp2x4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp2x4.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 f64e270e7d8e8fe7bf3b7cd641a237e1a4059fd56c14ffbabdcef7751fd05704 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 19:50:12,226 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:50:12,272 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 19:50:12,275 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:50:12,276 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:50:12,293 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:50:12,293 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:50:12,294 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:50:12,294 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:50:12,294 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:50:12,294 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:50:12,295 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:50:12,295 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:50:12,295 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:50:12,295 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:50:12,296 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:50:12,296 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:50:12,296 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:50:12,297 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:50:12,297 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:50:12,297 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:50:12,298 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:50:12,298 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:50:12,298 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:50:12,299 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:50:12,299 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:50:12,299 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:50:12,299 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:50:12,300 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:50:12,300 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:50:12,300 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:50:12,300 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:50:12,301 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:50:12,301 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:50:12,301 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:50:12,301 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:50:12,301 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 19:50:12,302 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 19:50:12,302 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:50:12,302 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:50:12,302 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:50:12,303 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:50:12,303 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f64e270e7d8e8fe7bf3b7cd641a237e1a4059fd56c14ffbabdcef7751fd05704 [2024-10-11 19:50:12,507 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:50:12,529 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:50:12,532 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:50:12,533 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:50:12,534 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:50:12,535 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp2x4.wvr.c [2024-10-11 19:50:13,877 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:50:14,021 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:50:14,021 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp2x4.wvr.c [2024-10-11 19:50:14,030 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/fcede47c4/fb18aed8dd524431836403ae2fb3446d/FLAGe3388fdfc [2024-10-11 19:50:14,041 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/fcede47c4/fb18aed8dd524431836403ae2fb3446d [2024-10-11 19:50:14,043 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:50:14,044 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:50:14,045 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:50:14,045 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:50:14,049 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:50:14,049 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:50:14" (1/1) ... [2024-10-11 19:50:14,050 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ab336c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:50:14, skipping insertion in model container [2024-10-11 19:50:14,050 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:50:14" (1/1) ... [2024-10-11 19:50:14,068 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:50:14,271 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:50:14,279 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 19:50:14,303 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:50:14,318 INFO L204 MainTranslator]: Completed translation [2024-10-11 19:50:14,319 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:50:14 WrapperNode [2024-10-11 19:50:14,319 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:50:14,320 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 19:50:14,320 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 19:50:14,321 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 19:50:14,327 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:50:14" (1/1) ... [2024-10-11 19:50:14,338 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:50:14" (1/1) ... [2024-10-11 19:50:14,358 INFO L138 Inliner]: procedures = 19, calls = 13, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 73 [2024-10-11 19:50:14,358 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 19:50:14,361 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 19:50:14,361 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 19:50:14,361 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 19:50:14,369 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:50:14" (1/1) ... [2024-10-11 19:50:14,369 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:50:14" (1/1) ... [2024-10-11 19:50:14,372 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:50:14" (1/1) ... [2024-10-11 19:50:14,386 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-11 19:50:14,390 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:50:14" (1/1) ... [2024-10-11 19:50:14,390 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:50:14" (1/1) ... [2024-10-11 19:50:14,393 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:50:14" (1/1) ... [2024-10-11 19:50:14,400 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:50:14" (1/1) ... [2024-10-11 19:50:14,400 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:50:14" (1/1) ... [2024-10-11 19:50:14,401 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:50:14" (1/1) ... [2024-10-11 19:50:14,403 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 19:50:14,403 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 19:50:14,403 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 19:50:14,403 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 19:50:14,404 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:50:14" (1/1) ... [2024-10-11 19:50:14,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:50:14,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:50:14,433 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 19:50:14,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 19:50:14,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 19:50:14,477 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 19:50:14,477 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 19:50:14,477 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 19:50:14,477 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 19:50:14,477 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-11 19:50:14,477 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-11 19:50:14,477 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-10-11 19:50:14,477 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-10-11 19:50:14,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 19:50:14,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 19:50:14,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 19:50:14,481 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 19:50:14,559 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 19:50:14,560 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 19:50:14,725 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 19:50:14,725 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 19:50:14,830 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 19:50:14,830 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-11 19:50:14,830 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:50:14 BoogieIcfgContainer [2024-10-11 19:50:14,831 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 19:50:14,832 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 19:50:14,832 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 19:50:14,835 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 19:50:14,835 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 07:50:14" (1/3) ... [2024-10-11 19:50:14,836 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c4e42e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:50:14, skipping insertion in model container [2024-10-11 19:50:14,836 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:50:14" (2/3) ... [2024-10-11 19:50:14,836 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c4e42e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:50:14, skipping insertion in model container [2024-10-11 19:50:14,836 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:50:14" (3/3) ... [2024-10-11 19:50:14,837 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp2x4.wvr.c [2024-10-11 19:50:14,850 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 19:50:14,851 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-11 19:50:14,851 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 19:50:14,903 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-10-11 19:50:14,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 34 transitions, 96 flow [2024-10-11 19:50:14,964 INFO L124 PetriNetUnfolderBase]: 4/30 cut-off events. [2024-10-11 19:50:14,964 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-11 19:50:14,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 30 events. 4/30 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 18 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 25. Up to 2 conditions per place. [2024-10-11 19:50:14,967 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 34 transitions, 96 flow [2024-10-11 19:50:14,969 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 29 transitions, 82 flow [2024-10-11 19:50:14,976 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:50:14,982 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;@42ca9865, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:50:14,982 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-10-11 19:50:14,992 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:50:14,992 INFO L124 PetriNetUnfolderBase]: 4/26 cut-off events. [2024-10-11 19:50:14,992 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-11 19:50:14,993 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:50:14,993 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:50:14,994 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-11 19:50:15,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:50:15,001 INFO L85 PathProgramCache]: Analyzing trace with hash -155691460, now seen corresponding path program 1 times [2024-10-11 19:50:15,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:50:15,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634369402] [2024-10-11 19:50:15,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:50:15,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:50:15,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:50:15,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:50:15,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:50:15,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634369402] [2024-10-11 19:50:15,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634369402] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:50:15,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:50:15,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:50:15,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290815666] [2024-10-11 19:50:15,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:50:15,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:50:15,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:50:15,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:50:15,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:50:15,428 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2024-10-11 19:50:15,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 29 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 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) [2024-10-11 19:50:15,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:50:15,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2024-10-11 19:50:15,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:50:15,686 INFO L124 PetriNetUnfolderBase]: 1367/1732 cut-off events. [2024-10-11 19:50:15,690 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2024-10-11 19:50:15,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3611 conditions, 1732 events. 1367/1732 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5541 event pairs, 123 based on Foata normal form. 2/1002 useless extension candidates. Maximal degree in co-relation 3091. Up to 1541 conditions per place. [2024-10-11 19:50:15,739 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 35 selfloop transitions, 5 changer transitions 1/46 dead transitions. [2024-10-11 19:50:15,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 46 transitions, 219 flow [2024-10-11 19:50:15,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:50:15,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:50:15,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2024-10-11 19:50:15,760 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7156862745098039 [2024-10-11 19:50:15,761 INFO L175 Difference]: Start difference. First operand has 38 places, 29 transitions, 82 flow. Second operand 3 states and 73 transitions. [2024-10-11 19:50:15,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 46 transitions, 219 flow [2024-10-11 19:50:15,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 46 transitions, 189 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-10-11 19:50:15,776 INFO L231 Difference]: Finished difference. Result has 31 places, 31 transitions, 95 flow [2024-10-11 19:50:15,778 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=31, PETRI_TRANSITIONS=31} [2024-10-11 19:50:15,784 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, -7 predicate places. [2024-10-11 19:50:15,784 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 31 transitions, 95 flow [2024-10-11 19:50:15,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 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) [2024-10-11 19:50:15,784 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:50:15,784 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:50:15,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 19:50:15,785 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-11 19:50:15,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:50:15,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1450891758, now seen corresponding path program 1 times [2024-10-11 19:50:15,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:50:15,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376509372] [2024-10-11 19:50:15,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:50:15,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:50:15,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:50:15,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:50:15,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:50:15,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376509372] [2024-10-11 19:50:15,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376509372] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:50:15,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:50:15,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:50:15,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877841133] [2024-10-11 19:50:15,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:50:15,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:50:15,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:50:15,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:50:15,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:50:15,908 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2024-10-11 19:50:15,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 31 transitions, 95 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:50:15,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:50:15,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2024-10-11 19:50:15,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:50:16,152 INFO L124 PetriNetUnfolderBase]: 1587/2032 cut-off events. [2024-10-11 19:50:16,153 INFO L125 PetriNetUnfolderBase]: For 475/475 co-relation queries the response was YES. [2024-10-11 19:50:16,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5056 conditions, 2032 events. 1587/2032 cut-off events. For 475/475 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 7016 event pairs, 112 based on Foata normal form. 34/2064 useless extension candidates. Maximal degree in co-relation 1261. Up to 839 conditions per place. [2024-10-11 19:50:16,169 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 66 selfloop transitions, 10 changer transitions 0/81 dead transitions. [2024-10-11 19:50:16,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 81 transitions, 391 flow [2024-10-11 19:50:16,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:50:16,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:50:16,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-10-11 19:50:16,173 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7058823529411765 [2024-10-11 19:50:16,173 INFO L175 Difference]: Start difference. First operand has 31 places, 31 transitions, 95 flow. Second operand 5 states and 120 transitions. [2024-10-11 19:50:16,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 81 transitions, 391 flow [2024-10-11 19:50:16,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 81 transitions, 383 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:50:16,177 INFO L231 Difference]: Finished difference. Result has 36 places, 38 transitions, 155 flow [2024-10-11 19:50:16,177 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=155, PETRI_PLACES=36, PETRI_TRANSITIONS=38} [2024-10-11 19:50:16,178 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, -2 predicate places. [2024-10-11 19:50:16,178 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 38 transitions, 155 flow [2024-10-11 19:50:16,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:50:16,178 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:50:16,178 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:50:16,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 19:50:16,179 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-11 19:50:16,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:50:16,181 INFO L85 PathProgramCache]: Analyzing trace with hash -58212751, now seen corresponding path program 1 times [2024-10-11 19:50:16,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:50:16,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171522802] [2024-10-11 19:50:16,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:50:16,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:50:16,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:50:16,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:50:16,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:50:16,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171522802] [2024-10-11 19:50:16,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171522802] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:50:16,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:50:16,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:50:16,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572483640] [2024-10-11 19:50:16,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:50:16,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:50:16,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:50:16,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:50:16,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:50:16,301 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2024-10-11 19:50:16,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 38 transitions, 155 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:50:16,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:50:16,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2024-10-11 19:50:16,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:50:16,511 INFO L124 PetriNetUnfolderBase]: 1541/1986 cut-off events. [2024-10-11 19:50:16,512 INFO L125 PetriNetUnfolderBase]: For 1762/1762 co-relation queries the response was YES. [2024-10-11 19:50:16,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6004 conditions, 1986 events. 1541/1986 cut-off events. For 1762/1762 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6946 event pairs, 94 based on Foata normal form. 46/2030 useless extension candidates. Maximal degree in co-relation 2813. Up to 810 conditions per place. [2024-10-11 19:50:16,523 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 65 selfloop transitions, 8 changer transitions 0/78 dead transitions. [2024-10-11 19:50:16,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 78 transitions, 412 flow [2024-10-11 19:50:16,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:50:16,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:50:16,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 118 transitions. [2024-10-11 19:50:16,526 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6941176470588235 [2024-10-11 19:50:16,526 INFO L175 Difference]: Start difference. First operand has 36 places, 38 transitions, 155 flow. Second operand 5 states and 118 transitions. [2024-10-11 19:50:16,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 78 transitions, 412 flow [2024-10-11 19:50:16,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 78 transitions, 412 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 19:50:16,531 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 169 flow [2024-10-11 19:50:16,531 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=169, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2024-10-11 19:50:16,532 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 3 predicate places. [2024-10-11 19:50:16,533 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 169 flow [2024-10-11 19:50:16,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:50:16,533 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:50:16,533 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:50:16,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 19:50:16,534 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-11 19:50:16,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:50:16,534 INFO L85 PathProgramCache]: Analyzing trace with hash 131235292, now seen corresponding path program 1 times [2024-10-11 19:50:16,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:50:16,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298337764] [2024-10-11 19:50:16,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:50:16,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:50:16,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:50:16,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:50:16,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:50:16,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298337764] [2024-10-11 19:50:16,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298337764] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:50:16,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864774279] [2024-10-11 19:50:16,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:50:16,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:50:16,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:50:16,647 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:50:16,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 19:50:16,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:50:16,722 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 19:50:16,726 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:50:16,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:50:16,903 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:50:16,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:50:16,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864774279] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:50:16,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:50:16,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-10-11 19:50:16,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690538981] [2024-10-11 19:50:16,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:50:16,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 19:50:16,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:50:16,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 19:50:16,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 19:50:16,982 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2024-10-11 19:50:16,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 169 flow. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:50:16,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:50:16,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2024-10-11 19:50:16,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:50:17,314 INFO L124 PetriNetUnfolderBase]: 1869/2497 cut-off events. [2024-10-11 19:50:17,314 INFO L125 PetriNetUnfolderBase]: For 4481/4481 co-relation queries the response was YES. [2024-10-11 19:50:17,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8305 conditions, 2497 events. 1869/2497 cut-off events. For 4481/4481 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 10091 event pairs, 284 based on Foata normal form. 64/2557 useless extension candidates. Maximal degree in co-relation 4039. Up to 1031 conditions per place. [2024-10-11 19:50:17,332 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 79 selfloop transitions, 8 changer transitions 0/92 dead transitions. [2024-10-11 19:50:17,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 92 transitions, 622 flow [2024-10-11 19:50:17,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:50:17,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:50:17,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 113 transitions. [2024-10-11 19:50:17,335 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6647058823529411 [2024-10-11 19:50:17,336 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 169 flow. Second operand 5 states and 113 transitions. [2024-10-11 19:50:17,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 92 transitions, 622 flow [2024-10-11 19:50:17,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 92 transitions, 605 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:50:17,342 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 217 flow [2024-10-11 19:50:17,343 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=217, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2024-10-11 19:50:17,344 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 9 predicate places. [2024-10-11 19:50:17,344 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 217 flow [2024-10-11 19:50:17,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:50:17,345 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:50:17,345 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:50:17,360 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 19:50:17,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:50:17,550 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-11 19:50:17,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:50:17,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1229232657, now seen corresponding path program 1 times [2024-10-11 19:50:17,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:50:17,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061642031] [2024-10-11 19:50:17,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:50:17,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:50:17,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:50:17,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:50:17,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:50:17,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061642031] [2024-10-11 19:50:17,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061642031] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:50:17,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:50:17,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:50:17,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402486517] [2024-10-11 19:50:17,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:50:17,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:50:17,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:50:17,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:50:17,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:50:17,627 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2024-10-11 19:50:17,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 217 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:50:17,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:50:17,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2024-10-11 19:50:17,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:50:17,896 INFO L124 PetriNetUnfolderBase]: 1836/2452 cut-off events. [2024-10-11 19:50:17,896 INFO L125 PetriNetUnfolderBase]: For 5141/5141 co-relation queries the response was YES. [2024-10-11 19:50:17,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9565 conditions, 2452 events. 1836/2452 cut-off events. For 5141/5141 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 9547 event pairs, 70 based on Foata normal form. 33/2481 useless extension candidates. Maximal degree in co-relation 4857. Up to 1016 conditions per place. [2024-10-11 19:50:17,912 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 81 selfloop transitions, 10 changer transitions 0/96 dead transitions. [2024-10-11 19:50:17,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 96 transitions, 687 flow [2024-10-11 19:50:17,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:50:17,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:50:17,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 111 transitions. [2024-10-11 19:50:17,914 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6529411764705882 [2024-10-11 19:50:17,914 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 217 flow. Second operand 5 states and 111 transitions. [2024-10-11 19:50:17,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 96 transitions, 687 flow [2024-10-11 19:50:17,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 96 transitions, 687 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 19:50:17,925 INFO L231 Difference]: Finished difference. Result has 52 places, 47 transitions, 280 flow [2024-10-11 19:50:17,925 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=280, PETRI_PLACES=52, PETRI_TRANSITIONS=47} [2024-10-11 19:50:17,927 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 14 predicate places. [2024-10-11 19:50:17,927 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 47 transitions, 280 flow [2024-10-11 19:50:17,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:50:17,928 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:50:17,928 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:50:17,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 19:50:17,930 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-11 19:50:17,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:50:17,931 INFO L85 PathProgramCache]: Analyzing trace with hash -817991374, now seen corresponding path program 2 times [2024-10-11 19:50:17,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:50:17,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006779535] [2024-10-11 19:50:17,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:50:17,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:50:17,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:50:17,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:50:17,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:50:17,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006779535] [2024-10-11 19:50:17,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006779535] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:50:17,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:50:17,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:50:17,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912099529] [2024-10-11 19:50:17,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:50:17,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:50:17,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:50:17,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:50:17,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:50:17,999 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2024-10-11 19:50:17,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 47 transitions, 280 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:50:17,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:50:17,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2024-10-11 19:50:18,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:50:18,195 INFO L124 PetriNetUnfolderBase]: 1653/2199 cut-off events. [2024-10-11 19:50:18,195 INFO L125 PetriNetUnfolderBase]: For 5407/5407 co-relation queries the response was YES. [2024-10-11 19:50:18,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9176 conditions, 2199 events. 1653/2199 cut-off events. For 5407/5407 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 8268 event pairs, 90 based on Foata normal form. 31/2226 useless extension candidates. Maximal degree in co-relation 5202. Up to 877 conditions per place. [2024-10-11 19:50:18,210 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 76 selfloop transitions, 9 changer transitions 4/94 dead transitions. [2024-10-11 19:50:18,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 94 transitions, 696 flow [2024-10-11 19:50:18,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:50:18,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:50:18,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 111 transitions. [2024-10-11 19:50:18,211 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6529411764705882 [2024-10-11 19:50:18,211 INFO L175 Difference]: Start difference. First operand has 52 places, 47 transitions, 280 flow. Second operand 5 states and 111 transitions. [2024-10-11 19:50:18,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 94 transitions, 696 flow [2024-10-11 19:50:18,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 94 transitions, 683 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-10-11 19:50:18,218 INFO L231 Difference]: Finished difference. Result has 56 places, 46 transitions, 280 flow [2024-10-11 19:50:18,218 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=280, PETRI_PLACES=56, PETRI_TRANSITIONS=46} [2024-10-11 19:50:18,219 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 18 predicate places. [2024-10-11 19:50:18,219 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 280 flow [2024-10-11 19:50:18,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:50:18,219 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:50:18,219 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:50:18,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 19:50:18,219 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-11 19:50:18,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:50:18,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1848087545, now seen corresponding path program 2 times [2024-10-11 19:50:18,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:50:18,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809937943] [2024-10-11 19:50:18,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:50:18,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:50:18,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:50:18,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:50:18,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:50:18,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809937943] [2024-10-11 19:50:18,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809937943] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:50:18,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720931596] [2024-10-11 19:50:18,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 19:50:18,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:50:18,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:50:18,296 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:50:18,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 19:50:18,355 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 19:50:18,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:50:18,356 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 19:50:18,357 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:50:18,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:50:18,512 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:50:18,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:50:18,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720931596] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:50:18,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:50:18,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-10-11 19:50:18,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423597522] [2024-10-11 19:50:18,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:50:18,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 19:50:18,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:50:18,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 19:50:18,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 19:50:18,584 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2024-10-11 19:50:18,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 46 transitions, 280 flow. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:50:18,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:50:18,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2024-10-11 19:50:18,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:50:18,824 INFO L124 PetriNetUnfolderBase]: 1591/2149 cut-off events. [2024-10-11 19:50:18,824 INFO L125 PetriNetUnfolderBase]: For 5641/5641 co-relation queries the response was YES. [2024-10-11 19:50:18,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9229 conditions, 2149 events. 1591/2149 cut-off events. For 5641/5641 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 8554 event pairs, 257 based on Foata normal form. 62/2207 useless extension candidates. Maximal degree in co-relation 5857. Up to 1162 conditions per place. [2024-10-11 19:50:18,840 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 79 selfloop transitions, 8 changer transitions 0/92 dead transitions. [2024-10-11 19:50:18,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 92 transitions, 708 flow [2024-10-11 19:50:18,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:50:18,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:50:18,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2024-10-11 19:50:18,842 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6352941176470588 [2024-10-11 19:50:18,842 INFO L175 Difference]: Start difference. First operand has 56 places, 46 transitions, 280 flow. Second operand 5 states and 108 transitions. [2024-10-11 19:50:18,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 92 transitions, 708 flow [2024-10-11 19:50:18,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 92 transitions, 699 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-11 19:50:18,847 INFO L231 Difference]: Finished difference. Result has 61 places, 49 transitions, 321 flow [2024-10-11 19:50:18,847 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=321, PETRI_PLACES=61, PETRI_TRANSITIONS=49} [2024-10-11 19:50:18,848 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 23 predicate places. [2024-10-11 19:50:18,848 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 49 transitions, 321 flow [2024-10-11 19:50:18,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:50:18,849 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:50:18,849 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:50:18,863 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 19:50:19,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:50:19,050 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-11 19:50:19,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:50:19,050 INFO L85 PathProgramCache]: Analyzing trace with hash -448556108, now seen corresponding path program 2 times [2024-10-11 19:50:19,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:50:19,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209043741] [2024-10-11 19:50:19,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:50:19,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:50:19,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:50:19,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:50:19,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:50:19,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209043741] [2024-10-11 19:50:19,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209043741] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:50:19,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:50:19,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:50:19,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199655963] [2024-10-11 19:50:19,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:50:19,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:50:19,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:50:19,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:50:19,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:50:19,107 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2024-10-11 19:50:19,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 49 transitions, 321 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:50:19,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:50:19,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2024-10-11 19:50:19,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:50:19,311 INFO L124 PetriNetUnfolderBase]: 1515/2055 cut-off events. [2024-10-11 19:50:19,311 INFO L125 PetriNetUnfolderBase]: For 6311/6327 co-relation queries the response was YES. [2024-10-11 19:50:19,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9348 conditions, 2055 events. 1515/2055 cut-off events. For 6311/6327 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 8457 event pairs, 349 based on Foata normal form. 84/2137 useless extension candidates. Maximal degree in co-relation 8219. Up to 1174 conditions per place. [2024-10-11 19:50:19,325 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 111 selfloop transitions, 8 changer transitions 0/124 dead transitions. [2024-10-11 19:50:19,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 124 transitions, 1050 flow [2024-10-11 19:50:19,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:50:19,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:50:19,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-10-11 19:50:19,326 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-10-11 19:50:19,326 INFO L175 Difference]: Start difference. First operand has 61 places, 49 transitions, 321 flow. Second operand 5 states and 119 transitions. [2024-10-11 19:50:19,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 124 transitions, 1050 flow [2024-10-11 19:50:19,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 124 transitions, 992 flow, removed 20 selfloop flow, removed 2 redundant places. [2024-10-11 19:50:19,333 INFO L231 Difference]: Finished difference. Result has 65 places, 52 transitions, 351 flow [2024-10-11 19:50:19,333 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=351, PETRI_PLACES=65, PETRI_TRANSITIONS=52} [2024-10-11 19:50:19,335 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 27 predicate places. [2024-10-11 19:50:19,335 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 52 transitions, 351 flow [2024-10-11 19:50:19,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:50:19,335 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:50:19,336 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:50:19,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 19:50:19,336 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-11 19:50:19,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:50:19,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1762802453, now seen corresponding path program 2 times [2024-10-11 19:50:19,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:50:19,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557485286] [2024-10-11 19:50:19,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:50:19,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:50:19,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:50:19,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:50:19,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:50:19,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557485286] [2024-10-11 19:50:19,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557485286] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:50:19,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:50:19,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:50:19,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76150264] [2024-10-11 19:50:19,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:50:19,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:50:19,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:50:19,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:50:19,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:50:19,399 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2024-10-11 19:50:19,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 52 transitions, 351 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:50:19,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:50:19,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2024-10-11 19:50:19,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:50:19,608 INFO L124 PetriNetUnfolderBase]: 1447/1987 cut-off events. [2024-10-11 19:50:19,608 INFO L125 PetriNetUnfolderBase]: For 6552/6568 co-relation queries the response was YES. [2024-10-11 19:50:19,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9531 conditions, 1987 events. 1447/1987 cut-off events. For 6552/6568 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 8163 event pairs, 375 based on Foata normal form. 72/2057 useless extension candidates. Maximal degree in co-relation 8462. Up to 1150 conditions per place. [2024-10-11 19:50:19,622 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 111 selfloop transitions, 8 changer transitions 0/124 dead transitions. [2024-10-11 19:50:19,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 124 transitions, 1043 flow [2024-10-11 19:50:19,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:50:19,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:50:19,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2024-10-11 19:50:19,624 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6823529411764706 [2024-10-11 19:50:19,624 INFO L175 Difference]: Start difference. First operand has 65 places, 52 transitions, 351 flow. Second operand 5 states and 116 transitions. [2024-10-11 19:50:19,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 124 transitions, 1043 flow [2024-10-11 19:50:19,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 124 transitions, 1034 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-11 19:50:19,631 INFO L231 Difference]: Finished difference. Result has 70 places, 55 transitions, 399 flow [2024-10-11 19:50:19,631 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=399, PETRI_PLACES=70, PETRI_TRANSITIONS=55} [2024-10-11 19:50:19,632 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 32 predicate places. [2024-10-11 19:50:19,632 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 55 transitions, 399 flow [2024-10-11 19:50:19,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:50:19,633 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:50:19,633 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:50:19,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 19:50:19,633 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-11 19:50:19,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:50:19,633 INFO L85 PathProgramCache]: Analyzing trace with hash 347724471, now seen corresponding path program 1 times [2024-10-11 19:50:19,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:50:19,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10753748] [2024-10-11 19:50:19,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:50:19,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:50:19,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:50:20,073 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:50:20,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:50:20,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10753748] [2024-10-11 19:50:20,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10753748] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:50:20,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023206166] [2024-10-11 19:50:20,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:50:20,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:50:20,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:50:20,076 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:50:20,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 19:50:20,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:50:20,370 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-11 19:50:20,372 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:51:37,189 WARN L286 SmtUtils]: Spent 8.10s on a formula simplification. DAG size of input: 34 DAG size of output: 33 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)