./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe036.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/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 ../../../trunk/examples/svcomp/pthread-wmm/safe036.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.graphml --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 1118c32f43b2d6844c8e6b0e5b4fae8199d058f7b991e3c8d975cf675dc5221a --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 20:51:34,126 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 20:51:34,129 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 20:51:34,168 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 20:51:34,168 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 20:51:34,171 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 20:51:34,172 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 20:51:34,175 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 20:51:34,177 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 20:51:34,181 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 20:51:34,182 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 20:51:34,184 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 20:51:34,184 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 20:51:34,186 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 20:51:34,187 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 20:51:34,193 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 20:51:34,193 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 20:51:34,195 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 20:51:34,197 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 20:51:34,201 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 20:51:34,203 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 20:51:34,204 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 20:51:34,204 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 20:51:34,205 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 20:51:34,213 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 20:51:34,213 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 20:51:34,213 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 20:51:34,215 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 20:51:34,216 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 20:51:34,217 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 20:51:34,217 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 20:51:34,218 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 20:51:34,219 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 20:51:34,220 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 20:51:34,221 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 20:51:34,221 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 20:51:34,222 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 20:51:34,222 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 20:51:34,222 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 20:51:34,223 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 20:51:34,223 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 20:51:34,225 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 20:51:34,251 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 20:51:34,251 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 20:51:34,252 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 20:51:34,252 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 20:51:34,253 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 20:51:34,253 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 20:51:34,254 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 20:51:34,254 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 20:51:34,254 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 20:51:34,254 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 20:51:34,255 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 20:51:34,255 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 20:51:34,255 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 20:51:34,255 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 20:51:34,256 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 20:51:34,256 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 20:51:34,256 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 20:51:34,256 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 20:51:34,256 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 20:51:34,257 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 20:51:34,257 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 20:51:34,257 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 20:51:34,257 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 20:51:34,257 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 20:51:34,258 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 20:51:34,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 20:51:34,258 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 20:51:34,258 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 20:51:34,258 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 20:51:34,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 20:51:34,259 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 20:51:34,259 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 20:51:34,259 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 20:51:34,259 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 20:51:34,260 INFO L138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1118c32f43b2d6844c8e6b0e5b4fae8199d058f7b991e3c8d975cf675dc5221a Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 20:51:34,532 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 20:51:34,547 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 20:51:34,549 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 20:51:34,550 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 20:51:34,550 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 20:51:34,551 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe036.i [2023-08-29 20:51:35,682 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 20:51:35,886 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 20:51:35,886 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe036.i [2023-08-29 20:51:35,898 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e557a56b/1e0ab80aff0d4b399aa595bc29c3e87a/FLAGd6eb8f94c [2023-08-29 20:51:35,910 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e557a56b/1e0ab80aff0d4b399aa595bc29c3e87a [2023-08-29 20:51:35,912 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 20:51:35,913 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 20:51:35,914 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 20:51:35,914 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 20:51:35,917 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 20:51:35,918 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:51:35" (1/1) ... [2023-08-29 20:51:35,919 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fab6b6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:51:35, skipping insertion in model container [2023-08-29 20:51:35,919 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:51:35" (1/1) ... [2023-08-29 20:51:35,924 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 20:51:35,953 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 20:51:36,101 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe036.i[941,954] [2023-08-29 20:51:36,260 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:51:36,270 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 20:51:36,282 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe036.i[941,954] [2023-08-29 20:51:36,317 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:51:36,346 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 20:51:36,346 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 20:51:36,352 INFO L208 MainTranslator]: Completed translation [2023-08-29 20:51:36,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:51:36 WrapperNode [2023-08-29 20:51:36,352 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 20:51:36,353 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 20:51:36,354 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 20:51:36,354 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 20:51:36,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:51:36" (1/1) ... [2023-08-29 20:51:36,385 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:51:36" (1/1) ... [2023-08-29 20:51:36,406 INFO L138 Inliner]: procedures = 175, calls = 44, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 59 [2023-08-29 20:51:36,407 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 20:51:36,408 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 20:51:36,408 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 20:51:36,409 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 20:51:36,416 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:51:36" (1/1) ... [2023-08-29 20:51:36,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:51:36" (1/1) ... [2023-08-29 20:51:36,427 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:51:36" (1/1) ... [2023-08-29 20:51:36,427 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:51:36" (1/1) ... [2023-08-29 20:51:36,435 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:51:36" (1/1) ... [2023-08-29 20:51:36,441 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:51:36" (1/1) ... [2023-08-29 20:51:36,443 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:51:36" (1/1) ... [2023-08-29 20:51:36,448 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:51:36" (1/1) ... [2023-08-29 20:51:36,450 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 20:51:36,455 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 20:51:36,456 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 20:51:36,456 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 20:51:36,456 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:51:36" (1/1) ... [2023-08-29 20:51:36,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 20:51:36,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 20:51:36,485 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 20:51:36,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 20:51:36,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 20:51:36,515 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-29 20:51:36,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 20:51:36,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 20:51:36,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 20:51:36,516 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-29 20:51:36,516 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-29 20:51:36,516 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-29 20:51:36,516 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-29 20:51:36,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 20:51:36,516 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-29 20:51:36,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 20:51:36,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 20:51:36,518 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 20:51:36,681 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 20:51:36,698 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 20:51:36,882 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 20:51:36,890 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 20:51:36,891 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-29 20:51:36,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:51:36 BoogieIcfgContainer [2023-08-29 20:51:36,893 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 20:51:36,896 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 20:51:36,896 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 20:51:36,898 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 20:51:36,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 08:51:35" (1/3) ... [2023-08-29 20:51:36,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11357f09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:51:36, skipping insertion in model container [2023-08-29 20:51:36,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:51:36" (2/3) ... [2023-08-29 20:51:36,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11357f09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:51:36, skipping insertion in model container [2023-08-29 20:51:36,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:51:36" (3/3) ... [2023-08-29 20:51:36,901 INFO L112 eAbstractionObserver]: Analyzing ICFG safe036.i [2023-08-29 20:51:36,915 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 20:51:36,915 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-29 20:51:36,915 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 20:51:36,988 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 20:51:37,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 76 transitions, 162 flow [2023-08-29 20:51:37,075 INFO L130 PetriNetUnfolder]: 2/74 cut-off events. [2023-08-29 20:51:37,075 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:51:37,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 74 events. 2/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 51 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-08-29 20:51:37,080 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 76 transitions, 162 flow [2023-08-29 20:51:37,084 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 70 transitions, 146 flow [2023-08-29 20:51:37,087 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 20:51:37,098 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 70 transitions, 146 flow [2023-08-29 20:51:37,102 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 70 transitions, 146 flow [2023-08-29 20:51:37,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 70 transitions, 146 flow [2023-08-29 20:51:37,132 INFO L130 PetriNetUnfolder]: 2/70 cut-off events. [2023-08-29 20:51:37,132 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:51:37,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 70 events. 2/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 50 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2023-08-29 20:51:37,134 INFO L119 LiptonReduction]: Number of co-enabled transitions 780 [2023-08-29 20:51:39,163 INFO L134 LiptonReduction]: Checked pairs total: 1431 [2023-08-29 20:51:39,163 INFO L136 LiptonReduction]: Total number of compositions: 74 [2023-08-29 20:51:39,174 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 20:51:39,179 INFO L357 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, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@1c28389e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 20:51:39,180 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-08-29 20:51:39,181 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-29 20:51:39,181 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:51:39,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:51:39,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 20:51:39,182 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 20:51:39,186 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:51:39,186 INFO L85 PathProgramCache]: Analyzing trace with hash 278, now seen corresponding path program 1 times [2023-08-29 20:51:39,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:51:39,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20969962] [2023-08-29 20:51:39,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:51:39,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:51:39,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:51:39,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:51:39,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:51:39,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20969962] [2023-08-29 20:51:39,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20969962] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:51:39,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:51:39,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 20:51:39,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405139374] [2023-08-29 20:51:39,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:51:39,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 20:51:39,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:51:39,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 20:51:39,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 20:51:39,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 150 [2023-08-29 20:51:39,370 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 19 transitions, 44 flow. Second operand has 2 states, 2 states have (on average 71.5) internal successors, (143), 2 states have internal predecessors, (143), 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) [2023-08-29 20:51:39,370 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:51:39,370 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 150 [2023-08-29 20:51:39,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:51:39,413 INFO L130 PetriNetUnfolder]: 56/115 cut-off events. [2023-08-29 20:51:39,413 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:51:39,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 115 events. 56/115 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 401 event pairs, 56 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 225. Up to 109 conditions per place. [2023-08-29 20:51:39,416 INFO L137 encePairwiseOnDemand]: 145/150 looper letters, 12 selfloop transitions, 0 changer transitions 0/14 dead transitions. [2023-08-29 20:51:39,416 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 14 transitions, 58 flow [2023-08-29 20:51:39,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 20:51:39,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 20:51:39,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 159 transitions. [2023-08-29 20:51:39,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53 [2023-08-29 20:51:39,427 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 159 transitions. [2023-08-29 20:51:39,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 159 transitions. [2023-08-29 20:51:39,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:51:39,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 159 transitions. [2023-08-29 20:51:39,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 79.5) internal successors, (159), 2 states have internal predecessors, (159), 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) [2023-08-29 20:51:39,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 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) [2023-08-29 20:51:39,436 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 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) [2023-08-29 20:51:39,437 INFO L175 Difference]: Start difference. First operand has 25 places, 19 transitions, 44 flow. Second operand 2 states and 159 transitions. [2023-08-29 20:51:39,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 14 transitions, 58 flow [2023-08-29 20:51:39,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 14 transitions, 56 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 20:51:39,441 INFO L231 Difference]: Finished difference. Result has 20 places, 14 transitions, 32 flow [2023-08-29 20:51:39,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, 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=2, PETRI_FLOW=32, PETRI_PLACES=20, PETRI_TRANSITIONS=14} [2023-08-29 20:51:39,445 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, -5 predicate places. [2023-08-29 20:51:39,445 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 32 flow [2023-08-29 20:51:39,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 71.5) internal successors, (143), 2 states have internal predecessors, (143), 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) [2023-08-29 20:51:39,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:51:39,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:51:39,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 20:51:39,446 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 20:51:39,453 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:51:39,454 INFO L85 PathProgramCache]: Analyzing trace with hash -611458677, now seen corresponding path program 1 times [2023-08-29 20:51:39,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:51:39,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152570113] [2023-08-29 20:51:39,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:51:39,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:51:39,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:51:39,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:51:39,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:51:39,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152570113] [2023-08-29 20:51:39,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152570113] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:51:39,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:51:39,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 20:51:39,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126161558] [2023-08-29 20:51:39,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:51:39,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 20:51:39,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:51:39,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 20:51:39,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 20:51:39,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 150 [2023-08-29 20:51:39,892 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 14 transitions, 32 flow. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 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) [2023-08-29 20:51:39,892 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:51:39,892 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 150 [2023-08-29 20:51:39,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:51:39,931 INFO L130 PetriNetUnfolder]: 24/63 cut-off events. [2023-08-29 20:51:39,931 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:51:39,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 63 events. 24/63 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 151 event pairs, 7 based on Foata normal form. 4/61 useless extension candidates. Maximal degree in co-relation 131. Up to 49 conditions per place. [2023-08-29 20:51:39,933 INFO L137 encePairwiseOnDemand]: 146/150 looper letters, 15 selfloop transitions, 3 changer transitions 0/20 dead transitions. [2023-08-29 20:51:39,933 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 20 transitions, 82 flow [2023-08-29 20:51:39,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 20:51:39,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 20:51:39,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 223 transitions. [2023-08-29 20:51:39,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4955555555555556 [2023-08-29 20:51:39,939 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 223 transitions. [2023-08-29 20:51:39,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 223 transitions. [2023-08-29 20:51:39,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:51:39,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 223 transitions. [2023-08-29 20:51:39,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 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) [2023-08-29 20:51:39,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 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) [2023-08-29 20:51:39,945 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 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) [2023-08-29 20:51:39,945 INFO L175 Difference]: Start difference. First operand has 20 places, 14 transitions, 32 flow. Second operand 3 states and 223 transitions. [2023-08-29 20:51:39,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 20 transitions, 82 flow [2023-08-29 20:51:39,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 20 transitions, 82 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 20:51:39,947 INFO L231 Difference]: Finished difference. Result has 23 places, 16 transitions, 51 flow [2023-08-29 20:51:39,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=51, PETRI_PLACES=23, PETRI_TRANSITIONS=16} [2023-08-29 20:51:39,948 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, -2 predicate places. [2023-08-29 20:51:39,948 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 16 transitions, 51 flow [2023-08-29 20:51:39,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 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) [2023-08-29 20:51:39,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:51:39,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:51:39,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 20:51:39,949 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 20:51:39,952 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:51:39,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1611685146, now seen corresponding path program 1 times [2023-08-29 20:51:39,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:51:39,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663890496] [2023-08-29 20:51:39,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:51:39,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:51:39,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:51:40,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:51:40,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:51:40,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663890496] [2023-08-29 20:51:40,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663890496] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:51:40,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:51:40,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 20:51:40,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439542560] [2023-08-29 20:51:40,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:51:40,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 20:51:40,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:51:40,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 20:51:40,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-29 20:51:40,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 150 [2023-08-29 20:51:40,199 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 16 transitions, 51 flow. Second operand has 4 states, 4 states have (on average 70.25) internal successors, (281), 4 states have internal predecessors, (281), 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) [2023-08-29 20:51:40,199 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:51:40,200 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 150 [2023-08-29 20:51:40,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:51:40,232 INFO L130 PetriNetUnfolder]: 8/31 cut-off events. [2023-08-29 20:51:40,232 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 20:51:40,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 31 events. 8/31 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 47 event pairs, 3 based on Foata normal form. 4/33 useless extension candidates. Maximal degree in co-relation 83. Up to 12 conditions per place. [2023-08-29 20:51:40,233 INFO L137 encePairwiseOnDemand]: 146/150 looper letters, 13 selfloop transitions, 5 changer transitions 0/20 dead transitions. [2023-08-29 20:51:40,233 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 20 transitions, 97 flow [2023-08-29 20:51:40,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 20:51:40,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 20:51:40,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 291 transitions. [2023-08-29 20:51:40,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.485 [2023-08-29 20:51:40,235 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 291 transitions. [2023-08-29 20:51:40,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 291 transitions. [2023-08-29 20:51:40,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:51:40,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 291 transitions. [2023-08-29 20:51:40,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 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) [2023-08-29 20:51:40,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 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) [2023-08-29 20:51:40,238 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 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) [2023-08-29 20:51:40,238 INFO L175 Difference]: Start difference. First operand has 23 places, 16 transitions, 51 flow. Second operand 4 states and 291 transitions. [2023-08-29 20:51:40,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 20 transitions, 97 flow [2023-08-29 20:51:40,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 20 transitions, 94 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 20:51:40,239 INFO L231 Difference]: Finished difference. Result has 26 places, 16 transitions, 64 flow [2023-08-29 20:51:40,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=64, PETRI_PLACES=26, PETRI_TRANSITIONS=16} [2023-08-29 20:51:40,240 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 1 predicate places. [2023-08-29 20:51:40,240 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 16 transitions, 64 flow [2023-08-29 20:51:40,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.25) internal successors, (281), 4 states have internal predecessors, (281), 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) [2023-08-29 20:51:40,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:51:40,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:51:40,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 20:51:40,241 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 20:51:40,242 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:51:40,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1001042556, now seen corresponding path program 1 times [2023-08-29 20:51:40,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:51:40,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719026722] [2023-08-29 20:51:40,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:51:40,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:51:40,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:51:40,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:51:40,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:51:40,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719026722] [2023-08-29 20:51:40,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719026722] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:51:40,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:51:40,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 20:51:40,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520491356] [2023-08-29 20:51:40,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:51:40,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 20:51:40,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:51:40,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 20:51:40,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-29 20:51:40,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 150 [2023-08-29 20:51:40,447 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 16 transitions, 64 flow. Second operand has 6 states, 6 states have (on average 66.16666666666667) internal successors, (397), 6 states have internal predecessors, (397), 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) [2023-08-29 20:51:40,447 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:51:40,447 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 150 [2023-08-29 20:51:40,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:51:40,525 INFO L130 PetriNetUnfolder]: 16/54 cut-off events. [2023-08-29 20:51:40,525 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2023-08-29 20:51:40,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 54 events. 16/54 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 126 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 158. Up to 33 conditions per place. [2023-08-29 20:51:40,526 INFO L137 encePairwiseOnDemand]: 145/150 looper letters, 25 selfloop transitions, 4 changer transitions 0/29 dead transitions. [2023-08-29 20:51:40,526 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 29 transitions, 179 flow [2023-08-29 20:51:40,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 20:51:40,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 20:51:40,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 410 transitions. [2023-08-29 20:51:40,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2023-08-29 20:51:40,530 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 410 transitions. [2023-08-29 20:51:40,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 410 transitions. [2023-08-29 20:51:40,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:51:40,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 410 transitions. [2023-08-29 20:51:40,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 68.33333333333333) internal successors, (410), 6 states have internal predecessors, (410), 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) [2023-08-29 20:51:40,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 150.0) internal successors, (1050), 7 states have internal predecessors, (1050), 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) [2023-08-29 20:51:40,534 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 150.0) internal successors, (1050), 7 states have internal predecessors, (1050), 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) [2023-08-29 20:51:40,534 INFO L175 Difference]: Start difference. First operand has 26 places, 16 transitions, 64 flow. Second operand 6 states and 410 transitions. [2023-08-29 20:51:40,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 29 transitions, 179 flow [2023-08-29 20:51:40,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 29 transitions, 160 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-29 20:51:40,536 INFO L231 Difference]: Finished difference. Result has 32 places, 19 transitions, 82 flow [2023-08-29 20:51:40,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=82, PETRI_PLACES=32, PETRI_TRANSITIONS=19} [2023-08-29 20:51:40,537 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 7 predicate places. [2023-08-29 20:51:40,537 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 19 transitions, 82 flow [2023-08-29 20:51:40,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 66.16666666666667) internal successors, (397), 6 states have internal predecessors, (397), 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) [2023-08-29 20:51:40,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:51:40,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:51:40,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 20:51:40,538 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 20:51:40,538 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:51:40,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1311624032, now seen corresponding path program 2 times [2023-08-29 20:51:40,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:51:40,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740851027] [2023-08-29 20:51:40,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:51:40,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:51:40,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:51:40,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:51:40,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:51:40,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740851027] [2023-08-29 20:51:40,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740851027] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:51:40,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:51:40,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 20:51:40,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310026828] [2023-08-29 20:51:40,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:51:40,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 20:51:40,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:51:40,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 20:51:40,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 20:51:40,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 150 [2023-08-29 20:51:40,654 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 19 transitions, 82 flow. Second operand has 5 states, 5 states have (on average 66.6) internal successors, (333), 5 states have internal predecessors, (333), 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) [2023-08-29 20:51:40,654 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:51:40,654 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 150 [2023-08-29 20:51:40,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:51:40,741 INFO L130 PetriNetUnfolder]: 17/63 cut-off events. [2023-08-29 20:51:40,742 INFO L131 PetriNetUnfolder]: For 54/54 co-relation queries the response was YES. [2023-08-29 20:51:40,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 63 events. 17/63 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 160 event pairs, 7 based on Foata normal form. 1/64 useless extension candidates. Maximal degree in co-relation 203. Up to 23 conditions per place. [2023-08-29 20:51:40,743 INFO L137 encePairwiseOnDemand]: 144/150 looper letters, 23 selfloop transitions, 6 changer transitions 0/29 dead transitions. [2023-08-29 20:51:40,743 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 29 transitions, 191 flow [2023-08-29 20:51:40,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 20:51:40,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 20:51:40,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 407 transitions. [2023-08-29 20:51:40,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45222222222222225 [2023-08-29 20:51:40,745 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 407 transitions. [2023-08-29 20:51:40,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 407 transitions. [2023-08-29 20:51:40,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:51:40,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 407 transitions. [2023-08-29 20:51:40,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 67.83333333333333) internal successors, (407), 6 states have internal predecessors, (407), 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) [2023-08-29 20:51:40,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 150.0) internal successors, (1050), 7 states have internal predecessors, (1050), 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) [2023-08-29 20:51:40,749 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 150.0) internal successors, (1050), 7 states have internal predecessors, (1050), 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) [2023-08-29 20:51:40,749 INFO L175 Difference]: Start difference. First operand has 32 places, 19 transitions, 82 flow. Second operand 6 states and 407 transitions. [2023-08-29 20:51:40,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 29 transitions, 191 flow [2023-08-29 20:51:40,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 29 transitions, 187 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 20:51:40,751 INFO L231 Difference]: Finished difference. Result has 36 places, 22 transitions, 121 flow [2023-08-29 20:51:40,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=121, PETRI_PLACES=36, PETRI_TRANSITIONS=22} [2023-08-29 20:51:40,752 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 11 predicate places. [2023-08-29 20:51:40,752 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 22 transitions, 121 flow [2023-08-29 20:51:40,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 66.6) internal successors, (333), 5 states have internal predecessors, (333), 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) [2023-08-29 20:51:40,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:51:40,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:51:40,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 20:51:40,753 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 20:51:40,753 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:51:40,753 INFO L85 PathProgramCache]: Analyzing trace with hash 2132969754, now seen corresponding path program 1 times [2023-08-29 20:51:40,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:51:40,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545107469] [2023-08-29 20:51:40,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:51:40,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:51:40,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:51:40,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:51:40,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:51:40,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545107469] [2023-08-29 20:51:40,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545107469] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:51:40,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:51:40,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 20:51:40,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929982702] [2023-08-29 20:51:40,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:51:40,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 20:51:40,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:51:40,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 20:51:40,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-29 20:51:41,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 150 [2023-08-29 20:51:41,046 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 22 transitions, 121 flow. Second operand has 7 states, 7 states have (on average 57.714285714285715) internal successors, (404), 7 states have internal predecessors, (404), 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) [2023-08-29 20:51:41,047 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:51:41,047 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 150 [2023-08-29 20:51:41,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:51:41,102 INFO L130 PetriNetUnfolder]: 13/53 cut-off events. [2023-08-29 20:51:41,102 INFO L131 PetriNetUnfolder]: For 76/76 co-relation queries the response was YES. [2023-08-29 20:51:41,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 53 events. 13/53 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 140 event pairs, 0 based on Foata normal form. 3/55 useless extension candidates. Maximal degree in co-relation 193. Up to 22 conditions per place. [2023-08-29 20:51:41,103 INFO L137 encePairwiseOnDemand]: 145/150 looper letters, 0 selfloop transitions, 0 changer transitions 30/30 dead transitions. [2023-08-29 20:51:41,103 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 30 transitions, 212 flow [2023-08-29 20:51:41,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 20:51:41,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 20:51:41,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 416 transitions. [2023-08-29 20:51:41,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3961904761904762 [2023-08-29 20:51:41,106 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 416 transitions. [2023-08-29 20:51:41,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 416 transitions. [2023-08-29 20:51:41,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:51:41,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 416 transitions. [2023-08-29 20:51:41,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 59.42857142857143) internal successors, (416), 7 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:51:41,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 150.0) internal successors, (1200), 8 states have internal predecessors, (1200), 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) [2023-08-29 20:51:41,109 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 150.0) internal successors, (1200), 8 states have internal predecessors, (1200), 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) [2023-08-29 20:51:41,109 INFO L175 Difference]: Start difference. First operand has 36 places, 22 transitions, 121 flow. Second operand 7 states and 416 transitions. [2023-08-29 20:51:41,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 30 transitions, 212 flow [2023-08-29 20:51:41,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 30 transitions, 210 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 20:51:41,111 INFO L231 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2023-08-29 20:51:41,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2023-08-29 20:51:41,112 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 13 predicate places. [2023-08-29 20:51:41,112 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2023-08-29 20:51:41,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 57.714285714285715) internal successors, (404), 7 states have internal predecessors, (404), 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) [2023-08-29 20:51:41,114 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 8 remaining) [2023-08-29 20:51:41,115 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2023-08-29 20:51:41,115 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2023-08-29 20:51:41,115 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2023-08-29 20:51:41,116 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (3 of 8 remaining) [2023-08-29 20:51:41,116 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2023-08-29 20:51:41,116 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2023-08-29 20:51:41,116 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2023-08-29 20:51:41,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 20:51:41,117 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2023-08-29 20:51:41,119 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 20:51:41,119 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 20:51:41,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 08:51:41 BasicIcfg [2023-08-29 20:51:41,122 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 20:51:41,122 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 20:51:41,122 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 20:51:41,122 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 20:51:41,123 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:51:36" (3/4) ... [2023-08-29 20:51:41,125 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-29 20:51:41,130 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-08-29 20:51:41,130 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-08-29 20:51:41,133 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2023-08-29 20:51:41,133 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-29 20:51:41,133 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-29 20:51:41,133 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-29 20:51:41,158 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-29 20:51:41,158 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 20:51:41,159 INFO L158 Benchmark]: Toolchain (without parser) took 5246.21ms. Allocated memory was 75.5MB in the beginning and 111.1MB in the end (delta: 35.7MB). Free memory was 42.8MB in the beginning and 67.7MB in the end (delta: -24.9MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. [2023-08-29 20:51:41,159 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 56.6MB. Free memory was 34.2MB in the beginning and 34.1MB in the end (delta: 85.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 20:51:41,160 INFO L158 Benchmark]: CACSL2BoogieTranslator took 438.56ms. Allocated memory is still 75.5MB. Free memory was 42.6MB in the beginning and 40.2MB in the end (delta: 2.4MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. [2023-08-29 20:51:41,160 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.37ms. Allocated memory is still 75.5MB. Free memory was 40.2MB in the beginning and 38.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 20:51:41,160 INFO L158 Benchmark]: Boogie Preprocessor took 46.87ms. Allocated memory is still 75.5MB. Free memory was 38.1MB in the beginning and 36.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 20:51:41,161 INFO L158 Benchmark]: RCFGBuilder took 437.52ms. Allocated memory is still 75.5MB. Free memory was 36.6MB in the beginning and 46.8MB in the end (delta: -10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-08-29 20:51:41,161 INFO L158 Benchmark]: TraceAbstraction took 4226.20ms. Allocated memory was 75.5MB in the beginning and 111.1MB in the end (delta: 35.7MB). Free memory was 46.3MB in the beginning and 70.9MB in the end (delta: -24.6MB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. [2023-08-29 20:51:41,161 INFO L158 Benchmark]: Witness Printer took 36.38ms. Allocated memory is still 111.1MB. Free memory was 70.9MB in the beginning and 67.7MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-29 20:51:41,163 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 56.6MB. Free memory was 34.2MB in the beginning and 34.1MB in the end (delta: 85.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 438.56ms. Allocated memory is still 75.5MB. Free memory was 42.6MB in the beginning and 40.2MB in the end (delta: 2.4MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.37ms. Allocated memory is still 75.5MB. Free memory was 40.2MB in the beginning and 38.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.87ms. Allocated memory is still 75.5MB. Free memory was 38.1MB in the beginning and 36.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 437.52ms. Allocated memory is still 75.5MB. Free memory was 36.6MB in the beginning and 46.8MB in the end (delta: -10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 4226.20ms. Allocated memory was 75.5MB in the beginning and 111.1MB in the end (delta: 35.7MB). Free memory was 46.3MB in the beginning and 70.9MB in the end (delta: -24.6MB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. * Witness Printer took 36.38ms. Allocated memory is still 111.1MB. Free memory was 70.9MB in the beginning and 67.7MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 75 PlacesBefore, 25 PlacesAfterwards, 70 TransitionsBefore, 19 TransitionsAfterwards, 780 CoEnabledTransitionPairs, 5 FixpointIterations, 28 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 74 TotalNumberOfCompositions, 1431 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 865, independent: 807, independent conditional: 0, independent unconditional: 807, dependent: 58, dependent conditional: 0, dependent unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 457, independent: 443, independent conditional: 0, independent unconditional: 443, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 865, independent: 364, independent conditional: 0, independent unconditional: 364, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 457, unknown conditional: 0, unknown unconditional: 457] , Statistics on independence cache: Total cache size (in pairs): 27, Positive cache size: 22, Positive conditional cache size: 0, Positive unconditional cache size: 22, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - 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: -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: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 762]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 91 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: 4.1s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 191 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 133 mSDsluCounter, 80 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 59 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 438 IncrementalHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 21 mSDtfsCounter, 438 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=121occurred in iteration=5, InterpolantAutomatonStates: 28, 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, 0.9s InterpolantComputationTime, 57 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 51 ConstructedInterpolants, 0 QuantifiedInterpolants, 339 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-29 20:51:41,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (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