./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-ext/18_read_write_lock.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --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-ext/18_read_write_lock.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 72289b7b84ec29dc48aff6fa2f8d521998f594af518139867a01f104107e1865 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 22:35:27,200 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 22:35:27,202 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 22:35:27,225 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 22:35:27,226 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 22:35:27,227 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 22:35:27,228 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 22:35:27,230 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 22:35:27,231 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 22:35:27,232 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 22:35:27,233 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 22:35:27,234 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 22:35:27,234 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 22:35:27,235 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 22:35:27,236 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 22:35:27,237 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 22:35:27,238 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 22:35:27,239 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 22:35:27,240 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 22:35:27,242 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 22:35:27,243 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 22:35:27,248 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 22:35:27,258 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 22:35:27,259 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 22:35:27,262 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 22:35:27,263 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 22:35:27,263 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 22:35:27,264 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 22:35:27,264 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 22:35:27,265 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 22:35:27,265 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 22:35:27,266 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 22:35:27,266 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 22:35:27,267 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 22:35:27,268 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 22:35:27,268 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 22:35:27,269 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 22:35:27,269 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 22:35:27,269 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 22:35:27,270 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 22:35:27,271 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 22:35:27,272 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-31 22:35:27,291 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 22:35:27,295 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 22:35:27,296 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 22:35:27,297 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 22:35:27,297 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 22:35:27,298 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 22:35:27,298 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 22:35:27,298 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 22:35:27,298 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 22:35:27,299 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 22:35:27,299 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 22:35:27,300 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 22:35:27,300 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 22:35:27,300 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 22:35:27,300 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 22:35:27,300 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-31 22:35:27,301 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-31 22:35:27,301 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-31 22:35:27,301 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 22:35:27,301 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-31 22:35:27,301 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 22:35:27,302 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 22:35:27,302 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 22:35:27,302 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 22:35:27,302 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 22:35:27,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 22:35:27,303 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 22:35:27,303 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 22:35:27,303 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 22:35:27,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 22:35:27,303 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 22:35:27,304 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 22:35:27,304 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 22:35:27,304 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 22:35:27,304 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72289b7b84ec29dc48aff6fa2f8d521998f594af518139867a01f104107e1865 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 22:35:27,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 22:35:27,628 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 22:35:27,632 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 22:35:27,633 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 22:35:27,633 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 22:35:27,634 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/18_read_write_lock.i [2023-08-31 22:35:28,805 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 22:35:29,081 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 22:35:29,085 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/18_read_write_lock.i [2023-08-31 22:35:29,102 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67eab0af3/939cf5fe0c3c44b384bf0dede640f14a/FLAG43310f1a4 [2023-08-31 22:35:29,119 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67eab0af3/939cf5fe0c3c44b384bf0dede640f14a [2023-08-31 22:35:29,122 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 22:35:29,123 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 22:35:29,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 22:35:29,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 22:35:29,127 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 22:35:29,128 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 10:35:29" (1/1) ... [2023-08-31 22:35:29,131 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5efa726d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:35:29, skipping insertion in model container [2023-08-31 22:35:29,131 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 10:35:29" (1/1) ... [2023-08-31 22:35:29,137 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 22:35:29,185 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 22:35:29,347 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-31 22:35:29,480 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-ext/18_read_write_lock.i[31161,31174] [2023-08-31 22:35:29,488 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 22:35:29,497 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 22:35:29,518 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-31 22:35:29,535 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-ext/18_read_write_lock.i[31161,31174] [2023-08-31 22:35:29,540 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 22:35:29,576 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 22:35:29,577 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 22:35:29,577 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 22:35:29,583 INFO L208 MainTranslator]: Completed translation [2023-08-31 22:35:29,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:35:29 WrapperNode [2023-08-31 22:35:29,584 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 22:35:29,585 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 22:35:29,585 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 22:35:29,585 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 22:35:29,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:35:29" (1/1) ... [2023-08-31 22:35:29,618 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:35:29" (1/1) ... [2023-08-31 22:35:29,640 INFO L138 Inliner]: procedures = 174, calls = 32, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 78 [2023-08-31 22:35:29,641 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 22:35:29,642 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 22:35:29,642 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 22:35:29,642 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 22:35:29,650 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:35:29" (1/1) ... [2023-08-31 22:35:29,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:35:29" (1/1) ... [2023-08-31 22:35:29,656 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:35:29" (1/1) ... [2023-08-31 22:35:29,657 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:35:29" (1/1) ... [2023-08-31 22:35:29,669 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:35:29" (1/1) ... [2023-08-31 22:35:29,673 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:35:29" (1/1) ... [2023-08-31 22:35:29,674 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:35:29" (1/1) ... [2023-08-31 22:35:29,675 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:35:29" (1/1) ... [2023-08-31 22:35:29,678 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 22:35:29,683 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 22:35:29,683 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 22:35:29,683 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 22:35:29,684 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:35:29" (1/1) ... [2023-08-31 22:35:29,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 22:35:29,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 22:35:29,720 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) [2023-08-31 22:35:29,743 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 [2023-08-31 22:35:29,758 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-31 22:35:29,759 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-31 22:35:29,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 22:35:29,759 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-31 22:35:29,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 22:35:29,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 22:35:29,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 22:35:29,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 22:35:29,760 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-31 22:35:29,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 22:35:29,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 22:35:29,761 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 22:35:29,928 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 22:35:29,930 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 22:35:30,070 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 22:35:30,117 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 22:35:30,117 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-31 22:35:30,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 10:35:30 BoogieIcfgContainer [2023-08-31 22:35:30,125 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 22:35:30,127 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 22:35:30,127 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 22:35:30,130 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 22:35:30,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 10:35:29" (1/3) ... [2023-08-31 22:35:30,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d262c89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 10:35:30, skipping insertion in model container [2023-08-31 22:35:30,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:35:29" (2/3) ... [2023-08-31 22:35:30,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d262c89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 10:35:30, skipping insertion in model container [2023-08-31 22:35:30,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 10:35:30" (3/3) ... [2023-08-31 22:35:30,134 INFO L112 eAbstractionObserver]: Analyzing ICFG 18_read_write_lock.i [2023-08-31 22:35:30,148 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 22:35:30,149 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-31 22:35:30,149 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 22:35:30,205 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:35:30,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 57 transitions, 119 flow [2023-08-31 22:35:30,280 INFO L130 PetriNetUnfolder]: 1/56 cut-off events. [2023-08-31 22:35:30,284 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 22:35:30,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 56 events. 1/56 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 24 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2023-08-31 22:35:30,288 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 57 transitions, 119 flow [2023-08-31 22:35:30,292 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 52 transitions, 107 flow [2023-08-31 22:35:30,296 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:35:30,310 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 52 transitions, 107 flow [2023-08-31 22:35:30,314 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 52 transitions, 107 flow [2023-08-31 22:35:30,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 52 transitions, 107 flow [2023-08-31 22:35:30,340 INFO L130 PetriNetUnfolder]: 1/52 cut-off events. [2023-08-31 22:35:30,340 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 22:35:30,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 52 events. 1/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 23 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2023-08-31 22:35:30,342 INFO L119 LiptonReduction]: Number of co-enabled transitions 300 [2023-08-31 22:35:32,077 INFO L134 LiptonReduction]: Checked pairs total: 619 [2023-08-31 22:35:32,077 INFO L136 LiptonReduction]: Total number of compositions: 53 [2023-08-31 22:35:32,088 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 22:35:32,104 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;@13ad2614, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:35:32,105 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-31 22:35:32,106 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-31 22:35:32,107 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 22:35:32,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:35:32,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-31 22:35:32,108 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-08-31 22:35:32,113 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:35:32,113 INFO L85 PathProgramCache]: Analyzing trace with hash 263, now seen corresponding path program 1 times [2023-08-31 22:35:32,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:35:32,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754353482] [2023-08-31 22:35:32,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:35:32,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:35:32,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 22:35:32,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 22:35:32,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 22:35:32,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754353482] [2023-08-31 22:35:32,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754353482] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 22:35:32,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 22:35:32,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-31 22:35:32,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617204626] [2023-08-31 22:35:32,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 22:35:32,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-31 22:35:32,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 22:35:32,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-31 22:35:32,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-31 22:35:32,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 110 [2023-08-31 22:35:32,267 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 14 transitions, 31 flow. Second operand has 2 states, 2 states have (on average 52.5) internal successors, (105), 2 states have internal predecessors, (105), 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) [2023-08-31 22:35:32,267 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 22:35:32,267 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 110 [2023-08-31 22:35:32,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 22:35:32,296 INFO L130 PetriNetUnfolder]: 10/31 cut-off events. [2023-08-31 22:35:32,296 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 22:35:32,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 31 events. 10/31 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 76 event pairs, 10 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 56. Up to 30 conditions per place. [2023-08-31 22:35:32,298 INFO L137 encePairwiseOnDemand]: 107/110 looper letters, 9 selfloop transitions, 0 changer transitions 0/10 dead transitions. [2023-08-31 22:35:32,298 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 15 places, 10 transitions, 41 flow [2023-08-31 22:35:32,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-31 22:35:32,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-31 22:35:32,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 116 transitions. [2023-08-31 22:35:32,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5272727272727272 [2023-08-31 22:35:32,309 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 116 transitions. [2023-08-31 22:35:32,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 116 transitions. [2023-08-31 22:35:32,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 22:35:32,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 116 transitions. [2023-08-31 22:35:32,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 58.0) internal successors, (116), 2 states have internal predecessors, (116), 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) [2023-08-31 22:35:32,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 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) [2023-08-31 22:35:32,317 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 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) [2023-08-31 22:35:32,319 INFO L175 Difference]: Start difference. First operand has 17 places, 14 transitions, 31 flow. Second operand 2 states and 116 transitions. [2023-08-31 22:35:32,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 15 places, 10 transitions, 41 flow [2023-08-31 22:35:32,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 10 transitions, 40 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 22:35:32,322 INFO L231 Difference]: Finished difference. Result has 14 places, 10 transitions, 22 flow [2023-08-31 22:35:32,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=22, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=22, PETRI_PLACES=14, PETRI_TRANSITIONS=10} [2023-08-31 22:35:32,326 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, -3 predicate places. [2023-08-31 22:35:32,327 INFO L495 AbstractCegarLoop]: Abstraction has has 14 places, 10 transitions, 22 flow [2023-08-31 22:35:32,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 52.5) internal successors, (105), 2 states have internal predecessors, (105), 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) [2023-08-31 22:35:32,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:35:32,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-31 22:35:32,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 22:35:32,328 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-08-31 22:35:32,328 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:35:32,328 INFO L85 PathProgramCache]: Analyzing trace with hash 250345519, now seen corresponding path program 1 times [2023-08-31 22:35:32,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:35:32,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068842524] [2023-08-31 22:35:32,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:35:32,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:35:32,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 22:35:32,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 22:35:32,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 22:35:32,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068842524] [2023-08-31 22:35:32,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068842524] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 22:35:32,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 22:35:32,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 22:35:32,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226340081] [2023-08-31 22:35:32,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 22:35:32,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 22:35:32,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 22:35:32,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 22:35:32,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 22:35:32,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 110 [2023-08-31 22:35:32,485 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 10 transitions, 22 flow. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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) [2023-08-31 22:35:32,485 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 22:35:32,485 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 110 [2023-08-31 22:35:32,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 22:35:32,519 INFO L130 PetriNetUnfolder]: 14/43 cut-off events. [2023-08-31 22:35:32,519 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 22:35:32,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 43 events. 14/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 109 event pairs, 5 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 88. Up to 24 conditions per place. [2023-08-31 22:35:32,520 INFO L137 encePairwiseOnDemand]: 106/110 looper letters, 12 selfloop transitions, 3 changer transitions 0/15 dead transitions. [2023-08-31 22:35:32,520 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 15 transitions, 62 flow [2023-08-31 22:35:32,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 22:35:32,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 22:35:32,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 160 transitions. [2023-08-31 22:35:32,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486 [2023-08-31 22:35:32,527 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 160 transitions. [2023-08-31 22:35:32,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 160 transitions. [2023-08-31 22:35:32,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 22:35:32,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 160 transitions. [2023-08-31 22:35:32,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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) [2023-08-31 22:35:32,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 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) [2023-08-31 22:35:32,532 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 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) [2023-08-31 22:35:32,532 INFO L175 Difference]: Start difference. First operand has 14 places, 10 transitions, 22 flow. Second operand 3 states and 160 transitions. [2023-08-31 22:35:32,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 15 transitions, 62 flow [2023-08-31 22:35:32,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 15 transitions, 62 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 22:35:32,535 INFO L231 Difference]: Finished difference. Result has 18 places, 11 transitions, 40 flow [2023-08-31 22:35:32,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=22, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=40, PETRI_PLACES=18, PETRI_TRANSITIONS=11} [2023-08-31 22:35:32,536 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, 1 predicate places. [2023-08-31 22:35:32,536 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 11 transitions, 40 flow [2023-08-31 22:35:32,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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) [2023-08-31 22:35:32,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:35:32,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-31 22:35:32,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 22:35:32,537 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-08-31 22:35:32,539 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:35:32,539 INFO L85 PathProgramCache]: Analyzing trace with hash -829223985, now seen corresponding path program 1 times [2023-08-31 22:35:32,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:35:32,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832736460] [2023-08-31 22:35:32,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:35:32,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:35:32,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 22:35:32,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 22:35:32,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 22:35:32,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832736460] [2023-08-31 22:35:32,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832736460] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 22:35:32,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 22:35:32,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 22:35:32,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709877235] [2023-08-31 22:35:32,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 22:35:32,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 22:35:32,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 22:35:32,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 22:35:32,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 22:35:32,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 110 [2023-08-31 22:35:32,744 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 11 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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) [2023-08-31 22:35:32,744 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 22:35:32,744 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 110 [2023-08-31 22:35:32,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 22:35:32,760 INFO L130 PetriNetUnfolder]: 8/30 cut-off events. [2023-08-31 22:35:32,761 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-31 22:35:32,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 30 events. 8/30 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 67 event pairs, 8 based on Foata normal form. 5/35 useless extension candidates. Maximal degree in co-relation 75. Up to 27 conditions per place. [2023-08-31 22:35:32,762 INFO L137 encePairwiseOnDemand]: 108/110 looper letters, 6 selfloop transitions, 1 changer transitions 2/10 dead transitions. [2023-08-31 22:35:32,762 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 10 transitions, 56 flow [2023-08-31 22:35:32,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 22:35:32,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 22:35:32,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 153 transitions. [2023-08-31 22:35:32,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4636363636363636 [2023-08-31 22:35:32,763 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 153 transitions. [2023-08-31 22:35:32,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 153 transitions. [2023-08-31 22:35:32,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 22:35:32,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 153 transitions. [2023-08-31 22:35:32,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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) [2023-08-31 22:35:32,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 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) [2023-08-31 22:35:32,766 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 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) [2023-08-31 22:35:32,766 INFO L175 Difference]: Start difference. First operand has 18 places, 11 transitions, 40 flow. Second operand 3 states and 153 transitions. [2023-08-31 22:35:32,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 10 transitions, 56 flow [2023-08-31 22:35:32,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 10 transitions, 50 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 22:35:32,767 INFO L231 Difference]: Finished difference. Result has 17 places, 8 transitions, 28 flow [2023-08-31 22:35:32,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=28, PETRI_PLACES=17, PETRI_TRANSITIONS=8} [2023-08-31 22:35:32,768 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, 0 predicate places. [2023-08-31 22:35:32,768 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 8 transitions, 28 flow [2023-08-31 22:35:32,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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) [2023-08-31 22:35:32,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:35:32,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:35:32,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 22:35:32,769 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-08-31 22:35:32,769 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:35:32,769 INFO L85 PathProgramCache]: Analyzing trace with hash 63883736, now seen corresponding path program 1 times [2023-08-31 22:35:32,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:35:32,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329893816] [2023-08-31 22:35:32,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:35:32,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:35:32,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 22:35:32,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 22:35:32,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 22:35:32,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329893816] [2023-08-31 22:35:32,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329893816] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 22:35:32,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 22:35:32,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 22:35:32,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164828609] [2023-08-31 22:35:32,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 22:35:32,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 22:35:32,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 22:35:32,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 22:35:32,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-31 22:35:32,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 110 [2023-08-31 22:35:32,879 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 8 transitions, 28 flow. Second operand has 4 states, 4 states have (on average 51.5) internal successors, (206), 4 states have internal predecessors, (206), 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) [2023-08-31 22:35:32,879 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 22:35:32,879 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 110 [2023-08-31 22:35:32,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 22:35:32,897 INFO L130 PetriNetUnfolder]: 2/16 cut-off events. [2023-08-31 22:35:32,899 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 22:35:32,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 16 events. 2/16 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 1 based on Foata normal form. 2/18 useless extension candidates. Maximal degree in co-relation 40. Up to 10 conditions per place. [2023-08-31 22:35:32,900 INFO L137 encePairwiseOnDemand]: 107/110 looper letters, 5 selfloop transitions, 2 changer transitions 1/9 dead transitions. [2023-08-31 22:35:32,900 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 9 transitions, 46 flow [2023-08-31 22:35:32,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 22:35:32,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 22:35:32,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 209 transitions. [2023-08-31 22:35:32,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475 [2023-08-31 22:35:32,903 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 209 transitions. [2023-08-31 22:35:32,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 209 transitions. [2023-08-31 22:35:32,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 22:35:32,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 209 transitions. [2023-08-31 22:35:32,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 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) [2023-08-31 22:35:32,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 110.0) internal successors, (550), 5 states have internal predecessors, (550), 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) [2023-08-31 22:35:32,910 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 110.0) internal successors, (550), 5 states have internal predecessors, (550), 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) [2023-08-31 22:35:32,910 INFO L175 Difference]: Start difference. First operand has 17 places, 8 transitions, 28 flow. Second operand 4 states and 209 transitions. [2023-08-31 22:35:32,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 9 transitions, 46 flow [2023-08-31 22:35:32,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 9 transitions, 45 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 22:35:32,911 INFO L231 Difference]: Finished difference. Result has 19 places, 8 transitions, 34 flow [2023-08-31 22:35:32,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=27, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=34, PETRI_PLACES=19, PETRI_TRANSITIONS=8} [2023-08-31 22:35:32,912 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, 2 predicate places. [2023-08-31 22:35:32,913 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 8 transitions, 34 flow [2023-08-31 22:35:32,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.5) internal successors, (206), 4 states have internal predecessors, (206), 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) [2023-08-31 22:35:32,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:35:32,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:35:32,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 22:35:32,914 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-08-31 22:35:32,914 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:35:32,914 INFO L85 PathProgramCache]: Analyzing trace with hash 31709456, now seen corresponding path program 2 times [2023-08-31 22:35:32,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:35:32,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526252744] [2023-08-31 22:35:32,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:35:32,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:35:32,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 22:35:32,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 22:35:32,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 22:35:32,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526252744] [2023-08-31 22:35:33,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526252744] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 22:35:33,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 22:35:33,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 22:35:33,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671242303] [2023-08-31 22:35:33,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 22:35:33,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 22:35:33,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 22:35:33,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 22:35:33,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 22:35:33,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 110 [2023-08-31 22:35:33,005 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 8 transitions, 34 flow. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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) [2023-08-31 22:35:33,005 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 22:35:33,005 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 110 [2023-08-31 22:35:33,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 22:35:33,015 INFO L130 PetriNetUnfolder]: 0/8 cut-off events. [2023-08-31 22:35:33,016 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-31 22:35:33,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 8 events. 0/8 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 1/9 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2023-08-31 22:35:33,016 INFO L137 encePairwiseOnDemand]: 107/110 looper letters, 0 selfloop transitions, 0 changer transitions 7/7 dead transitions. [2023-08-31 22:35:33,016 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 7 transitions, 42 flow [2023-08-31 22:35:33,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 22:35:33,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 22:35:33,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 157 transitions. [2023-08-31 22:35:33,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47575757575757577 [2023-08-31 22:35:33,017 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 157 transitions. [2023-08-31 22:35:33,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 157 transitions. [2023-08-31 22:35:33,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 22:35:33,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 157 transitions. [2023-08-31 22:35:33,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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) [2023-08-31 22:35:33,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 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) [2023-08-31 22:35:33,020 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 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) [2023-08-31 22:35:33,020 INFO L175 Difference]: Start difference. First operand has 19 places, 8 transitions, 34 flow. Second operand 3 states and 157 transitions. [2023-08-31 22:35:33,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 7 transitions, 42 flow [2023-08-31 22:35:33,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 7 transitions, 37 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-31 22:35:33,021 INFO L231 Difference]: Finished difference. Result has 17 places, 0 transitions, 0 flow [2023-08-31 22:35:33,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=25, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=17, PETRI_TRANSITIONS=0} [2023-08-31 22:35:33,023 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, 0 predicate places. [2023-08-31 22:35:33,023 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 0 transitions, 0 flow [2023-08-31 22:35:33,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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) [2023-08-31 22:35:33,026 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 5 remaining) [2023-08-31 22:35:33,026 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 5 remaining) [2023-08-31 22:35:33,027 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (2 of 5 remaining) [2023-08-31 22:35:33,027 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2023-08-31 22:35:33,028 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-08-31 22:35:33,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 22:35:33,028 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2023-08-31 22:35:33,034 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-31 22:35:33,034 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-31 22:35:33,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.08 10:35:33 BasicIcfg [2023-08-31 22:35:33,040 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-31 22:35:33,041 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-31 22:35:33,041 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-31 22:35:33,041 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-31 22:35:33,042 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 10:35:30" (3/4) ... [2023-08-31 22:35:33,044 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-31 22:35:33,048 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2023-08-31 22:35:33,051 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2023-08-31 22:35:33,051 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-08-31 22:35:33,052 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-31 22:35:33,052 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-31 22:35:33,078 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-31 22:35:33,078 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-31 22:35:33,078 INFO L158 Benchmark]: Toolchain (without parser) took 3954.93ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 43.6MB in the beginning and 50.1MB in the end (delta: -6.4MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. [2023-08-31 22:35:33,079 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 56.6MB. Free memory was 34.7MB in the beginning and 34.6MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 22:35:33,079 INFO L158 Benchmark]: CACSL2BoogieTranslator took 459.82ms. Allocated memory is still 71.3MB. Free memory was 43.4MB in the beginning and 39.3MB in the end (delta: 4.2MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. [2023-08-31 22:35:33,079 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.42ms. Allocated memory is still 71.3MB. Free memory was 39.3MB in the beginning and 37.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 22:35:33,080 INFO L158 Benchmark]: Boogie Preprocessor took 40.25ms. Allocated memory is still 71.3MB. Free memory was 37.2MB in the beginning and 35.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 22:35:33,080 INFO L158 Benchmark]: RCFGBuilder took 442.47ms. Allocated memory is still 71.3MB. Free memory was 35.8MB in the beginning and 41.6MB in the end (delta: -5.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-08-31 22:35:33,080 INFO L158 Benchmark]: TraceAbstraction took 2913.60ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 41.3MB in the beginning and 53.1MB in the end (delta: -11.8MB). Peak memory consumption was 2.5MB. Max. memory is 16.1GB. [2023-08-31 22:35:33,081 INFO L158 Benchmark]: Witness Printer took 37.17ms. Allocated memory is still 86.0MB. Free memory was 53.1MB in the beginning and 50.1MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-31 22:35:33,082 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 56.6MB. Free memory was 34.7MB in the beginning and 34.6MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 459.82ms. Allocated memory is still 71.3MB. Free memory was 43.4MB in the beginning and 39.3MB in the end (delta: 4.2MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.42ms. Allocated memory is still 71.3MB. Free memory was 39.3MB in the beginning and 37.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.25ms. Allocated memory is still 71.3MB. Free memory was 37.2MB in the beginning and 35.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 442.47ms. Allocated memory is still 71.3MB. Free memory was 35.8MB in the beginning and 41.6MB in the end (delta: -5.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2913.60ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 41.3MB in the beginning and 53.1MB in the end (delta: -11.8MB). Peak memory consumption was 2.5MB. Max. memory is 16.1GB. * Witness Printer took 37.17ms. Allocated memory is still 86.0MB. Free memory was 53.1MB in the beginning and 50.1MB in the end (delta: 3.0MB). 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: 1.8s, 55 PlacesBefore, 17 PlacesAfterwards, 52 TransitionsBefore, 14 TransitionsAfterwards, 300 CoEnabledTransitionPairs, 5 FixpointIterations, 23 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 0 ChoiceCompositions, 53 TotalNumberOfCompositions, 619 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 432, independent: 363, independent conditional: 0, independent unconditional: 363, dependent: 69, dependent conditional: 0, dependent unconditional: 69, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 176, independent: 158, independent conditional: 0, independent unconditional: 158, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 432, independent: 205, independent conditional: 0, independent unconditional: 205, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 176, unknown conditional: 0, unknown unconditional: 176] , Statistics on independence cache: Total cache size (in pairs): 19, Positive cache size: 11, Positive conditional cache size: 0, Positive unconditional cache size: 11, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, 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: 738]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 747]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 65 locations, 5 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: 2.8s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 73 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 30 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 106 IncrementalHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 8 mSDtfsCounter, 106 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=2, InterpolantAutomatonStates: 15, 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, 0.4s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 56 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-31 22:35:33,105 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