./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/goblint-regression/04-mutex_22-deref_read.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/goblint-regression/04-mutex_22-deref_read.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8d306ff8cfbc22ceebe04735dbb58cf2d83206c78fa42d12e01716373b332b54 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 03:25:17,797 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 03:25:17,867 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-17 03:25:17,873 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 03:25:17,873 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 03:25:17,905 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 03:25:17,907 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 03:25:17,907 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 03:25:17,908 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 03:25:17,909 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 03:25:17,910 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 03:25:17,911 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 03:25:17,911 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 03:25:17,913 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 03:25:17,913 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 03:25:17,913 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 03:25:17,914 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 03:25:17,916 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 03:25:17,917 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 03:25:17,917 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 03:25:17,917 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-17 03:25:17,918 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-17 03:25:17,918 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-17 03:25:17,918 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 03:25:17,918 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-17 03:25:17,918 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 03:25:17,919 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 03:25:17,919 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 03:25:17,919 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 03:25:17,919 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 03:25:17,920 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 03:25:17,920 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 03:25:17,920 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 03:25:17,920 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:25:17,920 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 03:25:17,921 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 03:25:17,921 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 03:25:17,923 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 03:25:17,923 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 03:25:17,923 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 03:25:17,923 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 03:25:17,924 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 03:25:17,924 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d306ff8cfbc22ceebe04735dbb58cf2d83206c78fa42d12e01716373b332b54 [2024-11-17 03:25:18,157 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 03:25:18,180 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 03:25:18,183 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 03:25:18,184 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 03:25:18,185 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 03:25:18,186 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/04-mutex_22-deref_read.i [2024-11-17 03:25:19,468 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 03:25:19,667 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 03:25:19,668 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/04-mutex_22-deref_read.i [2024-11-17 03:25:19,682 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0942e2ca/812fc6de706449f3bf5170dc87a1fdcc/FLAG2a942f61f [2024-11-17 03:25:19,697 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0942e2ca/812fc6de706449f3bf5170dc87a1fdcc [2024-11-17 03:25:19,699 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 03:25:19,700 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 03:25:19,703 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 03:25:19,703 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 03:25:19,707 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 03:25:19,708 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:25:19" (1/1) ... [2024-11-17 03:25:19,709 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1329615a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:25:19, skipping insertion in model container [2024-11-17 03:25:19,709 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:25:19" (1/1) ... [2024-11-17 03:25:19,749 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 03:25:20,131 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:25:20,152 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 03:25:20,179 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:25:20,211 INFO L204 MainTranslator]: Completed translation [2024-11-17 03:25:20,212 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:25:20 WrapperNode [2024-11-17 03:25:20,212 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 03:25:20,213 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 03:25:20,213 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 03:25:20,214 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 03:25:20,220 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:25:20" (1/1) ... [2024-11-17 03:25:20,234 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:25:20" (1/1) ... [2024-11-17 03:25:20,249 INFO L138 Inliner]: procedures = 162, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 33 [2024-11-17 03:25:20,250 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 03:25:20,250 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 03:25:20,250 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 03:25:20,251 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 03:25:20,258 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:25:20" (1/1) ... [2024-11-17 03:25:20,258 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:25:20" (1/1) ... [2024-11-17 03:25:20,260 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:25:20" (1/1) ... [2024-11-17 03:25:20,282 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [3, 5]. 63 percent of accesses are in the largest equivalence class. The 6 initializations are split as follows [1, 5]. The 2 writes are split as follows [2, 0]. [2024-11-17 03:25:20,282 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:25:20" (1/1) ... [2024-11-17 03:25:20,282 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:25:20" (1/1) ... [2024-11-17 03:25:20,286 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:25:20" (1/1) ... [2024-11-17 03:25:20,286 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:25:20" (1/1) ... [2024-11-17 03:25:20,287 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:25:20" (1/1) ... [2024-11-17 03:25:20,289 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:25:20" (1/1) ... [2024-11-17 03:25:20,291 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 03:25:20,292 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 03:25:20,292 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 03:25:20,292 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 03:25:20,293 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:25:20" (1/1) ... [2024-11-17 03:25:20,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:25:20,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:25:20,326 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-17 03:25:20,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-17 03:25:20,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 03:25:20,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 03:25:20,386 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-17 03:25:20,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 03:25:20,386 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-17 03:25:20,386 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-17 03:25:20,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 03:25:20,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 03:25:20,387 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-17 03:25:20,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 03:25:20,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 03:25:20,390 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 03:25:20,517 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 03:25:20,519 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 03:25:20,635 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 03:25:20,636 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 03:25:20,716 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 03:25:20,718 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 03:25:20,718 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:25:20 BoogieIcfgContainer [2024-11-17 03:25:20,719 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 03:25:20,721 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 03:25:20,721 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 03:25:20,724 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 03:25:20,725 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:25:19" (1/3) ... [2024-11-17 03:25:20,725 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33b794fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:25:20, skipping insertion in model container [2024-11-17 03:25:20,726 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:25:20" (2/3) ... [2024-11-17 03:25:20,727 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33b794fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:25:20, skipping insertion in model container [2024-11-17 03:25:20,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:25:20" (3/3) ... [2024-11-17 03:25:20,729 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_22-deref_read.i [2024-11-17 03:25:20,743 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 03:25:20,744 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-11-17 03:25:20,745 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 03:25:20,770 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 03:25:20,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 25 places, 21 transitions, 46 flow [2024-11-17 03:25:20,816 INFO L124 PetriNetUnfolderBase]: 0/20 cut-off events. [2024-11-17 03:25:20,816 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:25:20,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24 conditions, 20 events. 0/20 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 34 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-11-17 03:25:20,818 INFO L82 GeneralOperation]: Start removeDead. Operand has 25 places, 21 transitions, 46 flow [2024-11-17 03:25:20,820 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 20 transitions, 43 flow [2024-11-17 03:25:20,828 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:25:20,834 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;@764bf802, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:25:20,834 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-17 03:25:20,839 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:25:20,839 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-11-17 03:25:20,839 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:25:20,839 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:25:20,840 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-17 03:25:20,840 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-11-17 03:25:20,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:25:20,845 INFO L85 PathProgramCache]: Analyzing trace with hash -510695106, now seen corresponding path program 1 times [2024-11-17 03:25:20,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:25:20,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425392703] [2024-11-17 03:25:20,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:25:20,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:25:20,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:25:21,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:25:21,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:25:21,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425392703] [2024-11-17 03:25:21,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425392703] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:25:21,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:25:21,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:25:21,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502591165] [2024-11-17 03:25:21,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:25:21,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:25:21,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:25:21,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:25:21,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:25:21,151 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 21 [2024-11-17 03:25:21,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 20 transitions, 43 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 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) [2024-11-17 03:25:21,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:25:21,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 21 [2024-11-17 03:25:21,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:25:21,225 INFO L124 PetriNetUnfolderBase]: 15/60 cut-off events. [2024-11-17 03:25:21,226 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:25:21,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 60 events. 15/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 189 event pairs, 0 based on Foata normal form. 10/64 useless extension candidates. Maximal degree in co-relation 96. Up to 35 conditions per place. [2024-11-17 03:25:21,228 INFO L140 encePairwiseOnDemand]: 17/21 looper letters, 11 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2024-11-17 03:25:21,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 21 transitions, 71 flow [2024-11-17 03:25:21,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:25:21,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:25:21,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 52 transitions. [2024-11-17 03:25:21,240 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2024-11-17 03:25:21,241 INFO L175 Difference]: Start difference. First operand has 24 places, 20 transitions, 43 flow. Second operand 4 states and 52 transitions. [2024-11-17 03:25:21,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 21 transitions, 71 flow [2024-11-17 03:25:21,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 21 transitions, 70 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:25:21,248 INFO L231 Difference]: Finished difference. Result has 24 places, 18 transitions, 42 flow [2024-11-17 03:25:21,249 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=42, PETRI_PLACES=24, PETRI_TRANSITIONS=18} [2024-11-17 03:25:21,255 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 0 predicate places. [2024-11-17 03:25:21,255 INFO L471 AbstractCegarLoop]: Abstraction has has 24 places, 18 transitions, 42 flow [2024-11-17 03:25:21,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 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) [2024-11-17 03:25:21,256 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:25:21,256 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-17 03:25:21,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 03:25:21,256 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-11-17 03:25:21,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:25:21,257 INFO L85 PathProgramCache]: Analyzing trace with hash -510695105, now seen corresponding path program 1 times [2024-11-17 03:25:21,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:25:21,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487324831] [2024-11-17 03:25:21,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:25:21,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:25:21,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:25:21,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:25:21,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:25:21,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487324831] [2024-11-17 03:25:21,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487324831] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:25:21,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:25:21,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:25:21,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658450846] [2024-11-17 03:25:21,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:25:21,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:25:21,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:25:21,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:25:21,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:25:21,421 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 21 [2024-11-17 03:25:21,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 18 transitions, 42 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 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) [2024-11-17 03:25:21,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:25:21,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 21 [2024-11-17 03:25:21,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:25:21,482 INFO L124 PetriNetUnfolderBase]: 15/52 cut-off events. [2024-11-17 03:25:21,483 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-17 03:25:21,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 52 events. 15/52 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 138 event pairs, 8 based on Foata normal form. 10/60 useless extension candidates. Maximal degree in co-relation 92. Up to 35 conditions per place. [2024-11-17 03:25:21,483 INFO L140 encePairwiseOnDemand]: 17/21 looper letters, 10 selfloop transitions, 2 changer transitions 1/19 dead transitions. [2024-11-17 03:25:21,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 19 transitions, 70 flow [2024-11-17 03:25:21,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:25:21,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:25:21,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 52 transitions. [2024-11-17 03:25:21,485 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2024-11-17 03:25:21,485 INFO L175 Difference]: Start difference. First operand has 24 places, 18 transitions, 42 flow. Second operand 4 states and 52 transitions. [2024-11-17 03:25:21,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 19 transitions, 70 flow [2024-11-17 03:25:21,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 19 transitions, 67 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:25:21,487 INFO L231 Difference]: Finished difference. Result has 23 places, 15 transitions, 37 flow [2024-11-17 03:25:21,487 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=35, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=37, PETRI_PLACES=23, PETRI_TRANSITIONS=15} [2024-11-17 03:25:21,488 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, -1 predicate places. [2024-11-17 03:25:21,488 INFO L471 AbstractCegarLoop]: Abstraction has has 23 places, 15 transitions, 37 flow [2024-11-17 03:25:21,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 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) [2024-11-17 03:25:21,488 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:25:21,488 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:25:21,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 03:25:21,489 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-11-17 03:25:21,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:25:21,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1343655237, now seen corresponding path program 1 times [2024-11-17 03:25:21,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:25:21,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133191316] [2024-11-17 03:25:21,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:25:21,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:25:21,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:25:21,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:25:21,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:25:21,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133191316] [2024-11-17 03:25:21,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133191316] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:25:21,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:25:21,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 03:25:21,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420612743] [2024-11-17 03:25:21,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:25:21,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:25:21,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:25:21,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:25:21,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:25:21,574 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 21 [2024-11-17 03:25:21,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 15 transitions, 37 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:25:21,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:25:21,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 21 [2024-11-17 03:25:21,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:25:21,601 INFO L124 PetriNetUnfolderBase]: 12/42 cut-off events. [2024-11-17 03:25:21,602 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-17 03:25:21,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 42 events. 12/42 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 101 event pairs, 12 based on Foata normal form. 4/42 useless extension candidates. Maximal degree in co-relation 79. Up to 33 conditions per place. [2024-11-17 03:25:21,602 INFO L140 encePairwiseOnDemand]: 19/21 looper letters, 0 selfloop transitions, 0 changer transitions 14/14 dead transitions. [2024-11-17 03:25:21,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 14 transitions, 53 flow [2024-11-17 03:25:21,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:25:21,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:25:21,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 40 transitions. [2024-11-17 03:25:21,604 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6349206349206349 [2024-11-17 03:25:21,604 INFO L175 Difference]: Start difference. First operand has 23 places, 15 transitions, 37 flow. Second operand 3 states and 40 transitions. [2024-11-17 03:25:21,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 14 transitions, 53 flow [2024-11-17 03:25:21,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 14 transitions, 50 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:25:21,605 INFO L231 Difference]: Finished difference. Result has 21 places, 0 transitions, 0 flow [2024-11-17 03:25:21,605 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=21, PETRI_TRANSITIONS=0} [2024-11-17 03:25:21,605 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, -3 predicate places. [2024-11-17 03:25:21,605 INFO L471 AbstractCegarLoop]: Abstraction has has 21 places, 0 transitions, 0 flow [2024-11-17 03:25:21,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:25:21,609 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 8 remaining) [2024-11-17 03:25:21,610 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2024-11-17 03:25:21,610 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (5 of 8 remaining) [2024-11-17 03:25:21,610 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 8 remaining) [2024-11-17 03:25:21,611 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 8 remaining) [2024-11-17 03:25:21,611 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 8 remaining) [2024-11-17 03:25:21,611 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 8 remaining) [2024-11-17 03:25:21,612 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 8 remaining) [2024-11-17 03:25:21,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-17 03:25:21,613 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-17 03:25:21,619 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-17 03:25:21,619 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-17 03:25:21,624 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 03:25:21 BasicIcfg [2024-11-17 03:25:21,625 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-17 03:25:21,625 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-17 03:25:21,626 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-17 03:25:21,627 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-17 03:25:21,627 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:25:20" (3/4) ... [2024-11-17 03:25:21,629 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-17 03:25:21,632 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure t_fun [2024-11-17 03:25:21,635 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2024-11-17 03:25:21,635 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-11-17 03:25:21,635 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-17 03:25:21,635 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-17 03:25:21,701 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-17 03:25:21,702 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-17 03:25:21,702 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-17 03:25:21,703 INFO L158 Benchmark]: Toolchain (without parser) took 2002.62ms. Allocated memory was 167.8MB in the beginning and 260.0MB in the end (delta: 92.3MB). Free memory was 97.1MB in the beginning and 215.6MB in the end (delta: -118.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-17 03:25:21,705 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 167.8MB. Free memory is still 122.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-17 03:25:21,706 INFO L158 Benchmark]: CACSL2BoogieTranslator took 509.39ms. Allocated memory is still 167.8MB. Free memory was 97.0MB in the beginning and 129.4MB in the end (delta: -32.4MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. [2024-11-17 03:25:21,706 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.87ms. Allocated memory is still 167.8MB. Free memory was 129.4MB in the beginning and 127.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-17 03:25:21,707 INFO L158 Benchmark]: Boogie Preprocessor took 40.78ms. Allocated memory is still 167.8MB. Free memory was 127.3MB in the beginning and 125.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-17 03:25:21,707 INFO L158 Benchmark]: IcfgBuilder took 427.30ms. Allocated memory is still 167.8MB. Free memory was 125.2MB in the beginning and 106.3MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-11-17 03:25:21,707 INFO L158 Benchmark]: TraceAbstraction took 904.03ms. Allocated memory was 167.8MB in the beginning and 260.0MB in the end (delta: 92.3MB). Free memory was 105.7MB in the beginning and 219.8MB in the end (delta: -114.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-17 03:25:21,708 INFO L158 Benchmark]: Witness Printer took 76.95ms. Allocated memory is still 260.0MB. Free memory was 219.8MB in the beginning and 215.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-17 03:25:21,709 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 167.8MB. Free memory is still 122.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 509.39ms. Allocated memory is still 167.8MB. Free memory was 97.0MB in the beginning and 129.4MB in the end (delta: -32.4MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.87ms. Allocated memory is still 167.8MB. Free memory was 129.4MB in the beginning and 127.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.78ms. Allocated memory is still 167.8MB. Free memory was 127.3MB in the beginning and 125.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 427.30ms. Allocated memory is still 167.8MB. Free memory was 125.2MB in the beginning and 106.3MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 904.03ms. Allocated memory was 167.8MB in the beginning and 260.0MB in the end (delta: 92.3MB). Free memory was 105.7MB in the beginning and 219.8MB in the end (delta: -114.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 76.95ms. Allocated memory is still 260.0MB. Free memory was 219.8MB in the beginning and 215.6MB 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: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 688]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 32 locations, 8 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: 0.8s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 88 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 57 mSDsluCounter, 5 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 97 IncrementalHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 2 mSDtfsCounter, 97 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=0, InterpolantAutomatonStates: 11, 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, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 120 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 5 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-17 03:25:21,730 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE