./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_03-priv_inv.i --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/goblint-regression/13-privatized_03-priv_inv.i -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 f20707f1105ba10067156ebf4074b2c6b4682bff1e09b23f43a3f8b7604511aa --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 19:45:07,768 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:45:07,807 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 19:45:07,812 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:45:07,814 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:45:07,841 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:45:07,841 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:45:07,842 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:45:07,842 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:45:07,842 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:45:07,843 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:45:07,843 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:45:07,843 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:45:07,844 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:45:07,844 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:45:07,844 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:45:07,845 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:45:07,845 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:45:07,845 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:45:07,845 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:45:07,846 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:45:07,846 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:45:07,846 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:45:07,847 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:45:07,847 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:45:07,847 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:45:07,848 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:45:07,848 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:45:07,848 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:45:07,848 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:45:07,849 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:45:07,849 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:45:07,849 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:45:07,849 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:45:07,849 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:45:07,850 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:45:07,850 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 19:45:07,850 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 19:45:07,850 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:45:07,851 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:45:07,851 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:45:07,851 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:45:07,851 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f20707f1105ba10067156ebf4074b2c6b4682bff1e09b23f43a3f8b7604511aa [2024-10-11 19:45:08,075 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:45:08,096 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:45:08,098 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:45:08,099 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:45:08,103 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:45:08,104 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_03-priv_inv.i [2024-10-11 19:45:09,457 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:45:09,701 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:45:09,704 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_03-priv_inv.i [2024-10-11 19:45:09,721 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/79e314a42/1cc939c3bb294f6ab852094e2de14886/FLAGe2f4746b7 [2024-10-11 19:45:10,045 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/79e314a42/1cc939c3bb294f6ab852094e2de14886 [2024-10-11 19:45:10,047 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:45:10,049 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:45:10,054 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:45:10,054 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:45:10,059 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:45:10,060 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:45:10" (1/1) ... [2024-10-11 19:45:10,061 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4523fe90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:45:10, skipping insertion in model container [2024-10-11 19:45:10,061 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:45:10" (1/1) ... [2024-10-11 19:45:10,097 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:45:10,444 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:45:10,458 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 19:45:10,501 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:45:10,529 INFO L204 MainTranslator]: Completed translation [2024-10-11 19:45:10,529 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:45:10 WrapperNode [2024-10-11 19:45:10,529 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:45:10,530 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 19:45:10,531 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 19:45:10,531 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 19:45:10,537 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:45:10" (1/1) ... [2024-10-11 19:45:10,550 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:45:10" (1/1) ... [2024-10-11 19:45:10,565 INFO L138 Inliner]: procedures = 165, calls = 32, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 60 [2024-10-11 19:45:10,565 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 19:45:10,566 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 19:45:10,566 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 19:45:10,566 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 19:45:10,574 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:45:10" (1/1) ... [2024-10-11 19:45:10,575 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:45:10" (1/1) ... [2024-10-11 19:45:10,578 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:45:10" (1/1) ... [2024-10-11 19:45:10,588 INFO L175 MemorySlicer]: Split 19 memory accesses to 3 slices as follows [7, 7, 5]. 37 percent of accesses are in the largest equivalence class. The 19 initializations are split as follows [7, 7, 5]. The 0 writes are split as follows [0, 0, 0]. [2024-10-11 19:45:10,589 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:45:10" (1/1) ... [2024-10-11 19:45:10,589 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:45:10" (1/1) ... [2024-10-11 19:45:10,592 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:45:10" (1/1) ... [2024-10-11 19:45:10,594 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:45:10" (1/1) ... [2024-10-11 19:45:10,595 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:45:10" (1/1) ... [2024-10-11 19:45:10,596 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:45:10" (1/1) ... [2024-10-11 19:45:10,597 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 19:45:10,598 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 19:45:10,598 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 19:45:10,598 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 19:45:10,599 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:45:10" (1/1) ... [2024-10-11 19:45:10,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:45:10,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:45:10,631 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 19:45:10,637 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 19:45:10,692 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-11 19:45:10,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 19:45:10,692 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-11 19:45:10,692 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-11 19:45:10,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 19:45:10,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 19:45:10,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-11 19:45:10,693 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-11 19:45:10,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 19:45:10,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 19:45:10,695 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 19:45:10,804 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 19:45:10,806 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 19:45:10,939 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 19:45:10,939 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 19:45:11,058 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 19:45:11,058 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-11 19:45:11,059 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:45:11 BoogieIcfgContainer [2024-10-11 19:45:11,059 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 19:45:11,060 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 19:45:11,060 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 19:45:11,063 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 19:45:11,063 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 07:45:10" (1/3) ... [2024-10-11 19:45:11,064 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64e995a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:45:11, skipping insertion in model container [2024-10-11 19:45:11,064 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:45:10" (2/3) ... [2024-10-11 19:45:11,064 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64e995a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:45:11, skipping insertion in model container [2024-10-11 19:45:11,064 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:45:11" (3/3) ... [2024-10-11 19:45:11,065 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_03-priv_inv.i [2024-10-11 19:45:11,081 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 19:45:11,081 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-10-11 19:45:11,081 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 19:45:11,114 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-11 19:45:11,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 32 transitions, 71 flow [2024-10-11 19:45:11,167 INFO L124 PetriNetUnfolderBase]: 3/31 cut-off events. [2024-10-11 19:45:11,167 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-11 19:45:11,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 31 events. 3/31 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 38 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 20. Up to 2 conditions per place. [2024-10-11 19:45:11,170 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 32 transitions, 71 flow [2024-10-11 19:45:11,172 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 30 transitions, 66 flow [2024-10-11 19:45:11,182 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:45:11,187 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;@71722ea4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:45:11,188 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-11 19:45:11,193 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:45:11,193 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2024-10-11 19:45:11,193 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:45:11,194 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:45:11,194 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 19:45:11,195 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 1 more)] === [2024-10-11 19:45:11,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:45:11,198 INFO L85 PathProgramCache]: Analyzing trace with hash 218636, now seen corresponding path program 1 times [2024-10-11 19:45:11,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:45:11,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818949825] [2024-10-11 19:45:11,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:45:11,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:45:11,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:45:11,382 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 19:45:11,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:45:11,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818949825] [2024-10-11 19:45:11,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818949825] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:45:11,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:45:11,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:45:11,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981697749] [2024-10-11 19:45:11,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:45:11,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:45:11,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:45:11,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:45:11,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:45:11,436 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-10-11 19:45:11,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 30 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 19:45:11,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:45:11,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-10-11 19:45:11,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:45:11,508 INFO L124 PetriNetUnfolderBase]: 32/119 cut-off events. [2024-10-11 19:45:11,509 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-11 19:45:11,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 119 events. 32/119 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 461 event pairs, 18 based on Foata normal form. 13/128 useless extension candidates. Maximal degree in co-relation 191. Up to 60 conditions per place. [2024-10-11 19:45:11,513 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 22 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2024-10-11 19:45:11,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 35 transitions, 133 flow [2024-10-11 19:45:11,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:45:11,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:45:11,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 62 transitions. [2024-10-11 19:45:11,522 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6458333333333334 [2024-10-11 19:45:11,524 INFO L175 Difference]: Start difference. First operand has 31 places, 30 transitions, 66 flow. Second operand 3 states and 62 transitions. [2024-10-11 19:45:11,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 35 transitions, 133 flow [2024-10-11 19:45:11,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 35 transitions, 127 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:45:11,529 INFO L231 Difference]: Finished difference. Result has 31 places, 29 transitions, 90 flow [2024-10-11 19:45:11,531 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=31, PETRI_TRANSITIONS=29} [2024-10-11 19:45:11,535 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 0 predicate places. [2024-10-11 19:45:11,535 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 29 transitions, 90 flow [2024-10-11 19:45:11,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 19:45:11,536 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:45:11,536 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:45:11,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 19:45:11,536 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 1 more)] === [2024-10-11 19:45:11,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:45:11,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1887176608, now seen corresponding path program 1 times [2024-10-11 19:45:11,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:45:11,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691390287] [2024-10-11 19:45:11,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:45:11,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:45:11,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:45:11,620 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 19:45:11,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:45:11,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691390287] [2024-10-11 19:45:11,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691390287] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:45:11,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:45:11,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:45:11,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966860244] [2024-10-11 19:45:11,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:45:11,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:45:11,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:45:11,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:45:11,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:45:11,636 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-10-11 19:45:11,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 29 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 19:45:11,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:45:11,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-10-11 19:45:11,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:45:11,695 INFO L124 PetriNetUnfolderBase]: 29/104 cut-off events. [2024-10-11 19:45:11,696 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-10-11 19:45:11,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238 conditions, 104 events. 29/104 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 360 event pairs, 19 based on Foata normal form. 8/110 useless extension candidates. Maximal degree in co-relation 59. Up to 60 conditions per place. [2024-10-11 19:45:11,698 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 21 selfloop transitions, 4 changer transitions 0/33 dead transitions. [2024-10-11 19:45:11,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 33 transitions, 148 flow [2024-10-11 19:45:11,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:45:11,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:45:11,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2024-10-11 19:45:11,701 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-10-11 19:45:11,701 INFO L175 Difference]: Start difference. First operand has 31 places, 29 transitions, 90 flow. Second operand 3 states and 60 transitions. [2024-10-11 19:45:11,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 33 transitions, 148 flow [2024-10-11 19:45:11,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 33 transitions, 138 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:45:11,704 INFO L231 Difference]: Finished difference. Result has 33 places, 29 transitions, 102 flow [2024-10-11 19:45:11,705 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=33, PETRI_TRANSITIONS=29} [2024-10-11 19:45:11,705 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 2 predicate places. [2024-10-11 19:45:11,705 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 29 transitions, 102 flow [2024-10-11 19:45:11,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 19:45:11,706 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:45:11,706 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:45:11,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 19:45:11,707 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 1 more)] === [2024-10-11 19:45:11,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:45:11,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1189265687, now seen corresponding path program 1 times [2024-10-11 19:45:11,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:45:11,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84385940] [2024-10-11 19:45:11,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:45:11,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:45:11,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:45:11,860 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 19:45:11,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:45:11,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84385940] [2024-10-11 19:45:11,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84385940] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:45:11,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:45:11,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 19:45:11,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564198524] [2024-10-11 19:45:11,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:45:11,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:45:11,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:45:11,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:45:11,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:45:11,883 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-10-11 19:45:11,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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 19:45:11,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:45:11,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-10-11 19:45:11,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:45:11,936 INFO L124 PetriNetUnfolderBase]: 10/52 cut-off events. [2024-10-11 19:45:11,936 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-10-11 19:45:11,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 52 events. 10/52 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 98 event pairs, 4 based on Foata normal form. 6/57 useless extension candidates. Maximal degree in co-relation 51. Up to 17 conditions per place. [2024-10-11 19:45:11,937 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 11 selfloop transitions, 7 changer transitions 0/24 dead transitions. [2024-10-11 19:45:11,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 24 transitions, 106 flow [2024-10-11 19:45:11,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:45:11,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:45:11,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 71 transitions. [2024-10-11 19:45:11,938 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44375 [2024-10-11 19:45:11,938 INFO L175 Difference]: Start difference. First operand has 33 places, 29 transitions, 102 flow. Second operand 5 states and 71 transitions. [2024-10-11 19:45:11,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 24 transitions, 106 flow [2024-10-11 19:45:11,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 24 transitions, 86 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-10-11 19:45:11,940 INFO L231 Difference]: Finished difference. Result has 27 places, 21 transitions, 58 flow [2024-10-11 19:45:11,940 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=58, PETRI_PLACES=27, PETRI_TRANSITIONS=21} [2024-10-11 19:45:11,940 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, -4 predicate places. [2024-10-11 19:45:11,940 INFO L471 AbstractCegarLoop]: Abstraction has has 27 places, 21 transitions, 58 flow [2024-10-11 19:45:11,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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 19:45:11,941 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:45:11,941 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] [2024-10-11 19:45:11,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 19:45:11,941 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 1 more)] === [2024-10-11 19:45:11,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:45:11,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1591171861, now seen corresponding path program 1 times [2024-10-11 19:45:11,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:45:11,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225149868] [2024-10-11 19:45:11,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:45:11,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:45:11,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:45:11,983 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 19:45:11,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:45:11,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225149868] [2024-10-11 19:45:11,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225149868] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:45:11,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:45:11,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 19:45:11,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410653982] [2024-10-11 19:45:11,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:45:11,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:45:11,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:45:11,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:45:11,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:45:11,987 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 32 [2024-10-11 19:45:11,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 21 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 19:45:11,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:45:11,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 32 [2024-10-11 19:45:11,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:45:12,004 INFO L124 PetriNetUnfolderBase]: 7/46 cut-off events. [2024-10-11 19:45:12,005 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-10-11 19:45:12,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 46 events. 7/46 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 86 event pairs, 7 based on Foata normal form. 1/44 useless extension candidates. Maximal degree in co-relation 10. Up to 28 conditions per place. [2024-10-11 19:45:12,005 INFO L140 encePairwiseOnDemand]: 30/32 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2024-10-11 19:45:12,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 20 transitions, 78 flow [2024-10-11 19:45:12,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:45:12,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:45:12,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 57 transitions. [2024-10-11 19:45:12,007 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.59375 [2024-10-11 19:45:12,007 INFO L175 Difference]: Start difference. First operand has 27 places, 21 transitions, 58 flow. Second operand 3 states and 57 transitions. [2024-10-11 19:45:12,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 20 transitions, 78 flow [2024-10-11 19:45:12,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 20 transitions, 69 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 19:45:12,008 INFO L231 Difference]: Finished difference. Result has 25 places, 0 transitions, 0 flow [2024-10-11 19:45:12,008 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=47, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=25, PETRI_TRANSITIONS=0} [2024-10-11 19:45:12,008 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, -6 predicate places. [2024-10-11 19:45:12,008 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 0 transitions, 0 flow [2024-10-11 19:45:12,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 19:45:12,011 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 4 remaining) [2024-10-11 19:45:12,012 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-10-11 19:45:12,012 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (1 of 4 remaining) [2024-10-11 19:45:12,012 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-10-11 19:45:12,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 19:45:12,012 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-10-11 19:45:12,015 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-11 19:45:12,015 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-11 19:45:12,022 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 07:45:12 BasicIcfg [2024-10-11 19:45:12,022 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-11 19:45:12,022 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-11 19:45:12,023 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-11 19:45:12,023 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-11 19:45:12,023 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:45:11" (3/4) ... [2024-10-11 19:45:12,025 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-11 19:45:12,028 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2024-10-11 19:45:12,032 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 46 nodes and edges [2024-10-11 19:45:12,032 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2024-10-11 19:45:12,032 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-10-11 19:45:12,032 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-10-11 19:45:12,032 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-11 19:45:12,032 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-11 19:45:12,099 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-11 19:45:12,100 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-11 19:45:12,100 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-11 19:45:12,100 INFO L158 Benchmark]: Toolchain (without parser) took 2051.80ms. Allocated memory is still 169.9MB. Free memory was 97.9MB in the beginning and 96.7MB in the end (delta: 1.2MB). Peak memory consumption was 4.1MB. Max. memory is 16.1GB. [2024-10-11 19:45:12,101 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 169.9MB. Free memory is still 125.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 19:45:12,102 INFO L158 Benchmark]: CACSL2BoogieTranslator took 475.97ms. Allocated memory is still 169.9MB. Free memory was 97.7MB in the beginning and 129.3MB in the end (delta: -31.6MB). Peak memory consumption was 15.0MB. Max. memory is 16.1GB. [2024-10-11 19:45:12,102 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.20ms. Allocated memory is still 169.9MB. Free memory was 129.3MB in the beginning and 127.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-11 19:45:12,103 INFO L158 Benchmark]: Boogie Preprocessor took 31.46ms. Allocated memory is still 169.9MB. Free memory was 127.2MB in the beginning and 125.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-11 19:45:12,103 INFO L158 Benchmark]: RCFGBuilder took 460.77ms. Allocated memory is still 169.9MB. Free memory was 125.1MB in the beginning and 96.6MB in the end (delta: 28.5MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-10-11 19:45:12,103 INFO L158 Benchmark]: TraceAbstraction took 961.79ms. Allocated memory is still 169.9MB. Free memory was 96.6MB in the beginning and 101.9MB in the end (delta: -5.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 19:45:12,103 INFO L158 Benchmark]: Witness Printer took 77.48ms. Allocated memory is still 169.9MB. Free memory was 100.9MB in the beginning and 96.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-11 19:45:12,105 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 169.9MB. Free memory is still 125.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 475.97ms. Allocated memory is still 169.9MB. Free memory was 97.7MB in the beginning and 129.3MB in the end (delta: -31.6MB). Peak memory consumption was 15.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.20ms. Allocated memory is still 169.9MB. Free memory was 129.3MB in the beginning and 127.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.46ms. Allocated memory is still 169.9MB. Free memory was 127.2MB in the beginning and 125.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 460.77ms. Allocated memory is still 169.9MB. Free memory was 125.1MB in the beginning and 96.6MB in the end (delta: 28.5MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 961.79ms. Allocated memory is still 169.9MB. Free memory was 96.6MB in the beginning and 101.9MB in the end (delta: -5.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 77.48ms. Allocated memory is still 169.9MB. Free memory was 100.9MB in the beginning and 96.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 704]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 708]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 702]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 41 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 0.9s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 71 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 44 mSDsluCounter, 15 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 113 IncrementalHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 14 mSDtfsCounter, 113 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=102occurred in iteration=2, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 108 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-11 19:45:12,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE