./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread/stateful01-2.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/stateful01-2.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 e2334be94e5a4379173e8ce9878c152630508647bf4da61c6cf055a5b5360d8e --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 19:44:02,133 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 19:44:02,135 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 19:44:02,179 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 19:44:02,181 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 19:44:02,184 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 19:44:02,185 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 19:44:02,187 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 19:44:02,190 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 19:44:02,193 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 19:44:02,194 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 19:44:02,195 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 19:44:02,195 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 19:44:02,196 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 19:44:02,196 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 19:44:02,197 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 19:44:02,198 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 19:44:02,198 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 19:44:02,200 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 19:44:02,201 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 19:44:02,202 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 19:44:02,208 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 19:44:02,209 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 19:44:02,210 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 19:44:02,218 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 19:44:02,218 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 19:44:02,218 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 19:44:02,220 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 19:44:02,221 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 19:44:02,222 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 19:44:02,222 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 19:44:02,226 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 19:44:02,227 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 19:44:02,227 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 19:44:02,228 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 19:44:02,228 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 19:44:02,228 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 19:44:02,229 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 19:44:02,230 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 19:44:02,230 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 19:44:02,231 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 19:44:02,233 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 19:44:02,266 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 19:44:02,266 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 19:44:02,268 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 19:44:02,268 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 19:44:02,269 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 19:44:02,269 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 19:44:02,269 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 19:44:02,269 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 19:44:02,270 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 19:44:02,270 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 19:44:02,271 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 19:44:02,271 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 19:44:02,271 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 19:44:02,271 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 19:44:02,271 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 19:44:02,272 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 19:44:02,272 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 19:44:02,272 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 19:44:02,272 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 19:44:02,272 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 19:44:02,273 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 19:44:02,273 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 19:44:02,273 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 19:44:02,273 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 19:44:02,273 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 19:44:02,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 19:44:02,274 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 19:44:02,274 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 19:44:02,274 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 19:44:02,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 19:44:02,275 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 19:44:02,275 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 19:44:02,275 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 19:44:02,275 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 19:44:02,275 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2334be94e5a4379173e8ce9878c152630508647bf4da61c6cf055a5b5360d8e Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 19:44:02,569 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 19:44:02,584 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 19:44:02,586 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 19:44:02,587 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 19:44:02,588 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 19:44:02,589 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stateful01-2.i [2023-08-29 19:44:03,791 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 19:44:04,029 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 19:44:04,030 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-2.i [2023-08-29 19:44:04,042 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/159dff800/6a2ec6ae88134c3f990b755c221c5a5d/FLAG6158fa3b7 [2023-08-29 19:44:04,054 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/159dff800/6a2ec6ae88134c3f990b755c221c5a5d [2023-08-29 19:44:04,056 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 19:44:04,062 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 19:44:04,069 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 19:44:04,069 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 19:44:04,073 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 19:44:04,073 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 07:44:04" (1/1) ... [2023-08-29 19:44:04,074 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b355a18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:44:04, skipping insertion in model container [2023-08-29 19:44:04,074 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 07:44:04" (1/1) ... [2023-08-29 19:44:04,079 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 19:44:04,123 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 19:44:04,381 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/stateful01-2.i[30826,30839] [2023-08-29 19:44:04,386 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 19:44:04,396 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 19:44:04,441 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/stateful01-2.i[30826,30839] [2023-08-29 19:44:04,447 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 19:44:04,502 INFO L208 MainTranslator]: Completed translation [2023-08-29 19:44:04,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:44:04 WrapperNode [2023-08-29 19:44:04,502 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 19:44:04,503 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 19:44:04,503 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 19:44:04,503 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 19:44:04,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:44:04" (1/1) ... [2023-08-29 19:44:04,538 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:44:04" (1/1) ... [2023-08-29 19:44:04,557 INFO L138 Inliner]: procedures = 168, calls = 34, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 63 [2023-08-29 19:44:04,558 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 19:44:04,559 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 19:44:04,559 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 19:44:04,559 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 19:44:04,567 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:44:04" (1/1) ... [2023-08-29 19:44:04,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:44:04" (1/1) ... [2023-08-29 19:44:04,577 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:44:04" (1/1) ... [2023-08-29 19:44:04,577 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:44:04" (1/1) ... [2023-08-29 19:44:04,585 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:44:04" (1/1) ... [2023-08-29 19:44:04,599 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:44:04" (1/1) ... [2023-08-29 19:44:04,601 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:44:04" (1/1) ... [2023-08-29 19:44:04,602 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:44:04" (1/1) ... [2023-08-29 19:44:04,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 19:44:04,605 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 19:44:04,605 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 19:44:04,605 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 19:44:04,606 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:44:04" (1/1) ... [2023-08-29 19:44:04,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 19:44:04,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 19:44:04,631 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 19:44:04,653 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 19:44:04,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 19:44:04,668 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-29 19:44:04,668 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-29 19:44:04,668 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-29 19:44:04,668 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-29 19:44:04,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 19:44:04,668 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 19:44:04,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 19:44:04,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 19:44:04,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 19:44:04,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 19:44:04,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 19:44:04,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 19:44:04,670 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 19:44:04,766 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 19:44:04,768 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 19:44:05,028 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 19:44:05,036 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 19:44:05,036 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-29 19:44:05,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 07:44:05 BoogieIcfgContainer [2023-08-29 19:44:05,038 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 19:44:05,040 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 19:44:05,040 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 19:44:05,043 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 19:44:05,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 07:44:04" (1/3) ... [2023-08-29 19:44:05,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ccb8264 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 07:44:05, skipping insertion in model container [2023-08-29 19:44:05,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:44:04" (2/3) ... [2023-08-29 19:44:05,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ccb8264 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 07:44:05, skipping insertion in model container [2023-08-29 19:44:05,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 07:44:05" (3/3) ... [2023-08-29 19:44:05,046 INFO L112 eAbstractionObserver]: Analyzing ICFG stateful01-2.i [2023-08-29 19:44:05,063 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 19:44:05,064 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-29 19:44:05,064 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 19:44:05,174 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-29 19:44:05,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 101 transitions, 218 flow [2023-08-29 19:44:05,278 INFO L130 PetriNetUnfolder]: 1/99 cut-off events. [2023-08-29 19:44:05,278 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 19:44:05,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 99 events. 1/99 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 81 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2023-08-29 19:44:05,283 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 101 transitions, 218 flow [2023-08-29 19:44:05,288 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 95 transitions, 202 flow [2023-08-29 19:44:05,291 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 19:44:05,310 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 101 places, 95 transitions, 202 flow [2023-08-29 19:44:05,316 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 101 places, 95 transitions, 202 flow [2023-08-29 19:44:05,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 95 transitions, 202 flow [2023-08-29 19:44:05,350 INFO L130 PetriNetUnfolder]: 1/95 cut-off events. [2023-08-29 19:44:05,350 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 19:44:05,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 95 events. 1/95 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 80 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 29. Up to 2 conditions per place. [2023-08-29 19:44:05,353 INFO L119 LiptonReduction]: Number of co-enabled transitions 940 [2023-08-29 19:44:09,238 INFO L134 LiptonReduction]: Checked pairs total: 3225 [2023-08-29 19:44:09,238 INFO L136 LiptonReduction]: Total number of compositions: 86 [2023-08-29 19:44:09,250 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 19:44:09,256 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;@41181167, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 19:44:09,256 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-08-29 19:44:09,257 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 19:44:09,257 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 19:44:09,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:44:09,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 19:44:09,258 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 19:44:09,262 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:44:09,262 INFO L85 PathProgramCache]: Analyzing trace with hash 352, now seen corresponding path program 1 times [2023-08-29 19:44:09,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:44:09,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486581167] [2023-08-29 19:44:09,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:44:09,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:44:09,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:44:09,363 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 19:44:09,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:44:09,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486581167] [2023-08-29 19:44:09,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486581167] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:44:09,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:44:09,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 19:44:09,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132148335] [2023-08-29 19:44:09,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:44:09,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 19:44:09,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:44:09,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 19:44:09,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 19:44:09,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 187 [2023-08-29 19:44:09,398 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 76 flow. Second operand has 2 states, 2 states have (on average 95.5) internal successors, (191), 2 states have internal predecessors, (191), 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 19:44:09,398 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:44:09,399 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 187 [2023-08-29 19:44:09,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:44:09,509 INFO L130 PetriNetUnfolder]: 161/316 cut-off events. [2023-08-29 19:44:09,509 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2023-08-29 19:44:09,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 640 conditions, 316 events. 161/316 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1340 event pairs, 161 based on Foata normal form. 0/220 useless extension candidates. Maximal degree in co-relation 563. Up to 302 conditions per place. [2023-08-29 19:44:09,516 INFO L137 encePairwiseOnDemand]: 185/187 looper letters, 24 selfloop transitions, 0 changer transitions 0/30 dead transitions. [2023-08-29 19:44:09,516 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 30 transitions, 120 flow [2023-08-29 19:44:09,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 19:44:09,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 19:44:09,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 216 transitions. [2023-08-29 19:44:09,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5775401069518716 [2023-08-29 19:44:09,535 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 216 transitions. [2023-08-29 19:44:09,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 216 transitions. [2023-08-29 19:44:09,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:44:09,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 216 transitions. [2023-08-29 19:44:09,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 108.0) internal successors, (216), 2 states have internal predecessors, (216), 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 19:44:09,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 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 19:44:09,552 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 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 19:44:09,553 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 76 flow. Second operand 2 states and 216 transitions. [2023-08-29 19:44:09,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 30 transitions, 120 flow [2023-08-29 19:44:09,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 30 transitions, 112 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-29 19:44:09,558 INFO L231 Difference]: Finished difference. Result has 34 places, 30 transitions, 64 flow [2023-08-29 19:44:09,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=64, PETRI_PLACES=34, PETRI_TRANSITIONS=30} [2023-08-29 19:44:09,564 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -5 predicate places. [2023-08-29 19:44:09,565 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 30 transitions, 64 flow [2023-08-29 19:44:09,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 95.5) internal successors, (191), 2 states have internal predecessors, (191), 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 19:44:09,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:44:09,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 19:44:09,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 19:44:09,566 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 19:44:09,567 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:44:09,568 INFO L85 PathProgramCache]: Analyzing trace with hash 346732, now seen corresponding path program 1 times [2023-08-29 19:44:09,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:44:09,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91402287] [2023-08-29 19:44:09,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:44:09,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:44:09,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:44:09,801 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 19:44:09,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:44:09,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91402287] [2023-08-29 19:44:09,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91402287] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:44:09,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:44:09,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 19:44:09,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531731929] [2023-08-29 19:44:09,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:44:09,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 19:44:09,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:44:09,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 19:44:09,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 19:44:09,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 187 [2023-08-29 19:44:09,848 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 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 19:44:09,848 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:44:09,848 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 187 [2023-08-29 19:44:09,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:44:09,914 INFO L130 PetriNetUnfolder]: 153/298 cut-off events. [2023-08-29 19:44:09,914 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 19:44:09,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 591 conditions, 298 events. 153/298 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1245 event pairs, 153 based on Foata normal form. 0/214 useless extension candidates. Maximal degree in co-relation 588. Up to 282 conditions per place. [2023-08-29 19:44:09,918 INFO L137 encePairwiseOnDemand]: 183/187 looper letters, 20 selfloop transitions, 2 changer transitions 0/28 dead transitions. [2023-08-29 19:44:09,918 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 28 transitions, 104 flow [2023-08-29 19:44:09,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 19:44:09,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 19:44:09,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 294 transitions. [2023-08-29 19:44:09,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5240641711229946 [2023-08-29 19:44:09,921 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 294 transitions. [2023-08-29 19:44:09,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 294 transitions. [2023-08-29 19:44:09,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:44:09,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 294 transitions. [2023-08-29 19:44:09,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 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 19:44:09,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 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 19:44:09,925 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 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 19:44:09,925 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 64 flow. Second operand 3 states and 294 transitions. [2023-08-29 19:44:09,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 28 transitions, 104 flow [2023-08-29 19:44:09,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 28 transitions, 104 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 19:44:09,926 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 64 flow [2023-08-29 19:44:09,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2023-08-29 19:44:09,927 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -5 predicate places. [2023-08-29 19:44:09,927 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 64 flow [2023-08-29 19:44:09,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 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 19:44:09,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:44:09,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 19:44:09,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 19:44:09,928 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 19:44:09,929 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:44:09,929 INFO L85 PathProgramCache]: Analyzing trace with hash 346730, now seen corresponding path program 1 times [2023-08-29 19:44:09,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:44:09,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172766584] [2023-08-29 19:44:09,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:44:09,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:44:09,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:44:09,978 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 19:44:09,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:44:09,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172766584] [2023-08-29 19:44:09,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172766584] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:44:09,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:44:09,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 19:44:09,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984892839] [2023-08-29 19:44:09,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:44:09,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 19:44:09,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:44:09,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 19:44:09,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 19:44:10,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 187 [2023-08-29 19:44:10,023 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 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 19:44:10,023 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:44:10,023 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 187 [2023-08-29 19:44:10,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:44:10,064 INFO L130 PetriNetUnfolder]: 145/280 cut-off events. [2023-08-29 19:44:10,064 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 19:44:10,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 558 conditions, 280 events. 145/280 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1136 event pairs, 145 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 554. Up to 264 conditions per place. [2023-08-29 19:44:10,066 INFO L137 encePairwiseOnDemand]: 183/187 looper letters, 18 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2023-08-29 19:44:10,066 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 26 transitions, 100 flow [2023-08-29 19:44:10,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 19:44:10,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 19:44:10,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 280 transitions. [2023-08-29 19:44:10,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49910873440285203 [2023-08-29 19:44:10,068 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 280 transitions. [2023-08-29 19:44:10,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 280 transitions. [2023-08-29 19:44:10,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:44:10,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 280 transitions. [2023-08-29 19:44:10,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 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 19:44:10,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 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 19:44:10,072 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 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 19:44:10,072 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 64 flow. Second operand 3 states and 280 transitions. [2023-08-29 19:44:10,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 26 transitions, 100 flow [2023-08-29 19:44:10,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 26 transitions, 96 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 19:44:10,073 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 60 flow [2023-08-29 19:44:10,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2023-08-29 19:44:10,074 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -7 predicate places. [2023-08-29 19:44:10,074 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 60 flow [2023-08-29 19:44:10,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 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 19:44:10,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:44:10,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 19:44:10,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 19:44:10,075 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 19:44:10,075 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:44:10,075 INFO L85 PathProgramCache]: Analyzing trace with hash 333216029, now seen corresponding path program 1 times [2023-08-29 19:44:10,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:44:10,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417735671] [2023-08-29 19:44:10,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:44:10,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:44:10,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:44:10,143 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 19:44:10,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:44:10,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417735671] [2023-08-29 19:44:10,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417735671] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:44:10,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:44:10,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 19:44:10,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204302985] [2023-08-29 19:44:10,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:44:10,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 19:44:10,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:44:10,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 19:44:10,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 19:44:10,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 187 [2023-08-29 19:44:10,173 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 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 19:44:10,173 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:44:10,173 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 187 [2023-08-29 19:44:10,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:44:10,208 INFO L130 PetriNetUnfolder]: 107/218 cut-off events. [2023-08-29 19:44:10,208 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 19:44:10,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 434 conditions, 218 events. 107/218 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 819 event pairs, 107 based on Foata normal form. 0/177 useless extension candidates. Maximal degree in co-relation 430. Up to 202 conditions per place. [2023-08-29 19:44:10,209 INFO L137 encePairwiseOnDemand]: 184/187 looper letters, 17 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2023-08-29 19:44:10,210 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 25 transitions, 96 flow [2023-08-29 19:44:10,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 19:44:10,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 19:44:10,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 281 transitions. [2023-08-29 19:44:10,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5008912655971479 [2023-08-29 19:44:10,214 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 281 transitions. [2023-08-29 19:44:10,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 281 transitions. [2023-08-29 19:44:10,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:44:10,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 281 transitions. [2023-08-29 19:44:10,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 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 19:44:10,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 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 19:44:10,216 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 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 19:44:10,216 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 60 flow. Second operand 3 states and 281 transitions. [2023-08-29 19:44:10,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 25 transitions, 96 flow [2023-08-29 19:44:10,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 25 transitions, 92 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 19:44:10,218 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 58 flow [2023-08-29 19:44:10,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2023-08-29 19:44:10,218 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -8 predicate places. [2023-08-29 19:44:10,218 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 58 flow [2023-08-29 19:44:10,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 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 19:44:10,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:44:10,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 19:44:10,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 19:44:10,219 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 19:44:10,220 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:44:10,220 INFO L85 PathProgramCache]: Analyzing trace with hash 333216031, now seen corresponding path program 1 times [2023-08-29 19:44:10,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:44:10,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227661662] [2023-08-29 19:44:10,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:44:10,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:44:10,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:44:10,322 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 19:44:10,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:44:10,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227661662] [2023-08-29 19:44:10,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227661662] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:44:10,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:44:10,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 19:44:10,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082502308] [2023-08-29 19:44:10,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:44:10,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 19:44:10,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:44:10,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 19:44:10,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-29 19:44:10,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 187 [2023-08-29 19:44:10,375 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 58 flow. Second operand has 4 states, 4 states have (on average 83.25) internal successors, (333), 4 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 19:44:10,375 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:44:10,375 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 187 [2023-08-29 19:44:10,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:44:10,408 INFO L130 PetriNetUnfolder]: 69/156 cut-off events. [2023-08-29 19:44:10,408 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 19:44:10,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 156 events. 69/156 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 545 event pairs, 69 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 306. Up to 140 conditions per place. [2023-08-29 19:44:10,409 INFO L137 encePairwiseOnDemand]: 184/187 looper letters, 16 selfloop transitions, 2 changer transitions 0/24 dead transitions. [2023-08-29 19:44:10,409 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 24 transitions, 92 flow [2023-08-29 19:44:10,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 19:44:10,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 19:44:10,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 265 transitions. [2023-08-29 19:44:10,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47237076648841353 [2023-08-29 19:44:10,411 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 265 transitions. [2023-08-29 19:44:10,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 265 transitions. [2023-08-29 19:44:10,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:44:10,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 265 transitions. [2023-08-29 19:44:10,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 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 19:44:10,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 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 19:44:10,418 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 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 19:44:10,418 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 58 flow. Second operand 3 states and 265 transitions. [2023-08-29 19:44:10,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 24 transitions, 92 flow [2023-08-29 19:44:10,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 24 transitions, 88 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 19:44:10,420 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 56 flow [2023-08-29 19:44:10,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2023-08-29 19:44:10,422 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -9 predicate places. [2023-08-29 19:44:10,422 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 56 flow [2023-08-29 19:44:10,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.25) internal successors, (333), 4 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 19:44:10,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:44:10,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:44:10,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 19:44:10,423 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 19:44:10,424 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:44:10,424 INFO L85 PathProgramCache]: Analyzing trace with hash -96587509, now seen corresponding path program 1 times [2023-08-29 19:44:10,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:44:10,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098340017] [2023-08-29 19:44:10,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:44:10,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:44:10,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:44:10,527 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 19:44:10,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:44:10,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098340017] [2023-08-29 19:44:10,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098340017] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:44:10,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:44:10,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 19:44:10,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36439102] [2023-08-29 19:44:10,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:44:10,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 19:44:10,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:44:10,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 19:44:10,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 19:44:10,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 187 [2023-08-29 19:44:10,558 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 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 19:44:10,558 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:44:10,558 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 187 [2023-08-29 19:44:10,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:44:10,598 INFO L130 PetriNetUnfolder]: 64/178 cut-off events. [2023-08-29 19:44:10,599 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-29 19:44:10,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355 conditions, 178 events. 64/178 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 605 event pairs, 24 based on Foata normal form. 32/210 useless extension candidates. Maximal degree in co-relation 351. Up to 104 conditions per place. [2023-08-29 19:44:10,600 INFO L137 encePairwiseOnDemand]: 179/187 looper letters, 19 selfloop transitions, 8 changer transitions 0/29 dead transitions. [2023-08-29 19:44:10,600 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 122 flow [2023-08-29 19:44:10,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 19:44:10,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 19:44:10,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 283 transitions. [2023-08-29 19:44:10,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5044563279857398 [2023-08-29 19:44:10,602 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 283 transitions. [2023-08-29 19:44:10,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 283 transitions. [2023-08-29 19:44:10,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:44:10,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 283 transitions. [2023-08-29 19:44:10,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 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 19:44:10,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 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 19:44:10,604 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 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 19:44:10,605 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 56 flow. Second operand 3 states and 283 transitions. [2023-08-29 19:44:10,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 122 flow [2023-08-29 19:44:10,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 118 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 19:44:10,606 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 68 flow [2023-08-29 19:44:10,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2023-08-29 19:44:10,607 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -9 predicate places. [2023-08-29 19:44:10,607 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 68 flow [2023-08-29 19:44:10,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 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 19:44:10,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:44:10,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:44:10,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 19:44:10,608 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 19:44:10,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:44:10,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1434219029, now seen corresponding path program 2 times [2023-08-29 19:44:10,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:44:10,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151886109] [2023-08-29 19:44:10,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:44:10,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:44:10,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:44:10,887 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 19:44:10,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:44:10,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151886109] [2023-08-29 19:44:10,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151886109] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:44:10,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:44:10,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 19:44:10,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099603960] [2023-08-29 19:44:10,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:44:10,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 19:44:10,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:44:10,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 19:44:10,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 19:44:10,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 187 [2023-08-29 19:44:10,935 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 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 19:44:10,935 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:44:10,935 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 187 [2023-08-29 19:44:10,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:44:10,962 INFO L130 PetriNetUnfolder]: 45/135 cut-off events. [2023-08-29 19:44:10,962 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-29 19:44:10,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305 conditions, 135 events. 45/135 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 462 event pairs, 45 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 301. Up to 111 conditions per place. [2023-08-29 19:44:10,963 INFO L137 encePairwiseOnDemand]: 185/187 looper letters, 16 selfloop transitions, 1 changer transitions 0/23 dead transitions. [2023-08-29 19:44:10,963 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 23 transitions, 100 flow [2023-08-29 19:44:10,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 19:44:10,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 19:44:10,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 285 transitions. [2023-08-29 19:44:10,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5080213903743316 [2023-08-29 19:44:10,965 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 285 transitions. [2023-08-29 19:44:10,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 285 transitions. [2023-08-29 19:44:10,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:44:10,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 285 transitions. [2023-08-29 19:44:10,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 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 19:44:10,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 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 19:44:10,968 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 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 19:44:10,968 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 68 flow. Second operand 3 states and 285 transitions. [2023-08-29 19:44:10,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 23 transitions, 100 flow [2023-08-29 19:44:10,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 23 transitions, 92 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 19:44:10,969 INFO L231 Difference]: Finished difference. Result has 30 places, 23 transitions, 60 flow [2023-08-29 19:44:10,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=30, PETRI_TRANSITIONS=23} [2023-08-29 19:44:10,970 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -9 predicate places. [2023-08-29 19:44:10,970 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 23 transitions, 60 flow [2023-08-29 19:44:10,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 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 19:44:10,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:44:10,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:44:10,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 19:44:10,971 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 19:44:10,971 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:44:10,972 INFO L85 PathProgramCache]: Analyzing trace with hash 601312915, now seen corresponding path program 1 times [2023-08-29 19:44:10,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:44:10,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029001929] [2023-08-29 19:44:10,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:44:10,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:44:10,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:44:11,141 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 19:44:11,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:44:11,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029001929] [2023-08-29 19:44:11,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029001929] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:44:11,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:44:11,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 19:44:11,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503876808] [2023-08-29 19:44:11,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:44:11,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 19:44:11,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:44:11,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 19:44:11,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-29 19:44:11,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 187 [2023-08-29 19:44:11,161 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 60 flow. Second operand has 6 states, 6 states have (on average 91.16666666666667) internal successors, (547), 6 states have internal predecessors, (547), 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 19:44:11,161 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:44:11,161 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 187 [2023-08-29 19:44:11,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:44:11,267 INFO L130 PetriNetUnfolder]: 69/217 cut-off events. [2023-08-29 19:44:11,268 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-29 19:44:11,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 217 events. 69/217 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 863 event pairs, 14 based on Foata normal form. 1/218 useless extension candidates. Maximal degree in co-relation 445. Up to 69 conditions per place. [2023-08-29 19:44:11,269 INFO L137 encePairwiseOnDemand]: 182/187 looper letters, 18 selfloop transitions, 2 changer transitions 25/49 dead transitions. [2023-08-29 19:44:11,269 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 49 transitions, 212 flow [2023-08-29 19:44:11,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 19:44:11,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 19:44:11,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 574 transitions. [2023-08-29 19:44:11,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5115864527629234 [2023-08-29 19:44:11,271 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 574 transitions. [2023-08-29 19:44:11,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 574 transitions. [2023-08-29 19:44:11,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:44:11,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 574 transitions. [2023-08-29 19:44:11,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 95.66666666666667) internal successors, (574), 6 states have internal predecessors, (574), 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 19:44:11,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 187.0) internal successors, (1309), 7 states have internal predecessors, (1309), 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 19:44:11,274 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 187.0) internal successors, (1309), 7 states have internal predecessors, (1309), 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 19:44:11,274 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 60 flow. Second operand 6 states and 574 transitions. [2023-08-29 19:44:11,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 49 transitions, 212 flow [2023-08-29 19:44:11,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 49 transitions, 211 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 19:44:11,276 INFO L231 Difference]: Finished difference. Result has 37 places, 23 transitions, 71 flow [2023-08-29 19:44:11,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=59, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=71, PETRI_PLACES=37, PETRI_TRANSITIONS=23} [2023-08-29 19:44:11,276 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -2 predicate places. [2023-08-29 19:44:11,276 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 23 transitions, 71 flow [2023-08-29 19:44:11,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 91.16666666666667) internal successors, (547), 6 states have internal predecessors, (547), 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 19:44:11,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:44:11,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:44:11,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 19:44:11,277 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 19:44:11,277 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:44:11,278 INFO L85 PathProgramCache]: Analyzing trace with hash -609291675, now seen corresponding path program 2 times [2023-08-29 19:44:11,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:44:11,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632902129] [2023-08-29 19:44:11,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:44:11,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:44:11,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:44:11,381 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 19:44:11,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:44:11,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632902129] [2023-08-29 19:44:11,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632902129] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:44:11,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:44:11,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 19:44:11,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120573544] [2023-08-29 19:44:11,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:44:11,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 19:44:11,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:44:11,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 19:44:11,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-29 19:44:11,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 187 [2023-08-29 19:44:11,407 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 23 transitions, 71 flow. Second operand has 6 states, 6 states have (on average 91.16666666666667) internal successors, (547), 6 states have internal predecessors, (547), 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 19:44:11,407 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:44:11,407 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 187 [2023-08-29 19:44:11,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:44:11,477 INFO L130 PetriNetUnfolder]: 29/97 cut-off events. [2023-08-29 19:44:11,477 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-29 19:44:11,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 97 events. 29/97 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 220 event pairs, 6 based on Foata normal form. 1/98 useless extension candidates. Maximal degree in co-relation 213. Up to 45 conditions per place. [2023-08-29 19:44:11,478 INFO L137 encePairwiseOnDemand]: 182/187 looper letters, 0 selfloop transitions, 0 changer transitions 28/28 dead transitions. [2023-08-29 19:44:11,478 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 28 transitions, 129 flow [2023-08-29 19:44:11,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 19:44:11,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 19:44:11,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 553 transitions. [2023-08-29 19:44:11,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4928698752228164 [2023-08-29 19:44:11,480 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 553 transitions. [2023-08-29 19:44:11,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 553 transitions. [2023-08-29 19:44:11,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:44:11,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 553 transitions. [2023-08-29 19:44:11,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 92.16666666666667) internal successors, (553), 6 states have internal predecessors, (553), 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 19:44:11,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 187.0) internal successors, (1309), 7 states have internal predecessors, (1309), 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 19:44:11,483 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 187.0) internal successors, (1309), 7 states have internal predecessors, (1309), 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 19:44:11,483 INFO L175 Difference]: Start difference. First operand has 37 places, 23 transitions, 71 flow. Second operand 6 states and 553 transitions. [2023-08-29 19:44:11,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 28 transitions, 129 flow [2023-08-29 19:44:11,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 28 transitions, 123 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-29 19:44:11,485 INFO L231 Difference]: Finished difference. Result has 35 places, 0 transitions, 0 flow [2023-08-29 19:44:11,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=35, PETRI_TRANSITIONS=0} [2023-08-29 19:44:11,485 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -4 predicate places. [2023-08-29 19:44:11,485 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 0 transitions, 0 flow [2023-08-29 19:44:11,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 91.16666666666667) internal successors, (547), 6 states have internal predecessors, (547), 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 19:44:11,488 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 12 remaining) [2023-08-29 19:44:11,489 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2023-08-29 19:44:11,489 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2023-08-29 19:44:11,489 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2023-08-29 19:44:11,489 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2023-08-29 19:44:11,489 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2023-08-29 19:44:11,489 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2023-08-29 19:44:11,489 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2023-08-29 19:44:11,489 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (3 of 12 remaining) [2023-08-29 19:44:11,490 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (2 of 12 remaining) [2023-08-29 19:44:11,490 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2023-08-29 19:44:11,490 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2023-08-29 19:44:11,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 19:44:11,490 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1] [2023-08-29 19:44:11,493 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 19:44:11,493 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 19:44:11,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 07:44:11 BasicIcfg [2023-08-29 19:44:11,495 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 19:44:11,496 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 19:44:11,496 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 19:44:11,496 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 19:44:11,496 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 07:44:05" (3/4) ... [2023-08-29 19:44:11,499 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-29 19:44:11,504 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-29 19:44:11,504 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-29 19:44:11,507 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2023-08-29 19:44:11,507 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-29 19:44:11,507 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-29 19:44:11,508 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-29 19:44:11,533 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-29 19:44:11,533 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 19:44:11,534 INFO L158 Benchmark]: Toolchain (without parser) took 7472.28ms. Allocated memory was 79.7MB in the beginning and 117.4MB in the end (delta: 37.7MB). Free memory was 56.6MB in the beginning and 84.9MB in the end (delta: -28.3MB). Peak memory consumption was 10.6MB. Max. memory is 16.1GB. [2023-08-29 19:44:11,534 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 60.8MB. Free memory is still 38.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 19:44:11,534 INFO L158 Benchmark]: CACSL2BoogieTranslator took 433.33ms. Allocated memory is still 79.7MB. Free memory was 56.3MB in the beginning and 57.4MB in the end (delta: -1.0MB). Peak memory consumption was 23.6MB. Max. memory is 16.1GB. [2023-08-29 19:44:11,534 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.24ms. Allocated memory is still 79.7MB. Free memory was 57.4MB in the beginning and 55.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 19:44:11,534 INFO L158 Benchmark]: Boogie Preprocessor took 45.29ms. Allocated memory is still 79.7MB. Free memory was 55.4MB in the beginning and 53.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 19:44:11,535 INFO L158 Benchmark]: RCFGBuilder took 433.78ms. Allocated memory is still 79.7MB. Free memory was 53.6MB in the beginning and 38.5MB in the end (delta: 15.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-08-29 19:44:11,535 INFO L158 Benchmark]: TraceAbstraction took 6455.48ms. Allocated memory was 79.7MB in the beginning and 117.4MB in the end (delta: 37.7MB). Free memory was 37.9MB in the beginning and 88.0MB in the end (delta: -50.1MB). Peak memory consumption was 49.8MB. Max. memory is 16.1GB. [2023-08-29 19:44:11,535 INFO L158 Benchmark]: Witness Printer took 37.39ms. Allocated memory is still 117.4MB. Free memory was 88.0MB in the beginning and 84.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 19:44:11,536 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 60.8MB. Free memory is still 38.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 433.33ms. Allocated memory is still 79.7MB. Free memory was 56.3MB in the beginning and 57.4MB in the end (delta: -1.0MB). Peak memory consumption was 23.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.24ms. Allocated memory is still 79.7MB. Free memory was 57.4MB in the beginning and 55.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.29ms. Allocated memory is still 79.7MB. Free memory was 55.4MB in the beginning and 53.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 433.78ms. Allocated memory is still 79.7MB. Free memory was 53.6MB in the beginning and 38.5MB in the end (delta: 15.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 6455.48ms. Allocated memory was 79.7MB in the beginning and 117.4MB in the end (delta: 37.7MB). Free memory was 37.9MB in the beginning and 88.0MB in the end (delta: -50.1MB). Peak memory consumption was 49.8MB. Max. memory is 16.1GB. * Witness Printer took 37.39ms. Allocated memory is still 117.4MB. Free memory was 88.0MB in the beginning and 84.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.9s, 101 PlacesBefore, 39 PlacesAfterwards, 95 TransitionsBefore, 32 TransitionsAfterwards, 940 CoEnabledTransitionPairs, 6 FixpointIterations, 53 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 86 TotalNumberOfCompositions, 3225 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1775, independent: 1614, independent conditional: 0, independent unconditional: 1614, dependent: 161, dependent conditional: 0, dependent unconditional: 161, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 484, independent: 463, independent conditional: 0, independent unconditional: 463, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1775, independent: 1151, independent conditional: 0, independent unconditional: 1151, dependent: 140, dependent conditional: 0, dependent unconditional: 140, unknown: 484, unknown conditional: 0, unknown unconditional: 484] , Statistics on independence cache: Total cache size (in pairs): 95, Positive cache size: 84, Positive conditional cache size: 0, Positive unconditional cache size: 84, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, 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: -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: 727]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 714]: 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, 131 locations, 12 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: 6.3s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 446 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 226 mSDsluCounter, 43 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 45 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 692 IncrementalHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 45 mSolverCounterUnsat, 40 mSDtfsCounter, 692 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=0, InterpolantAutomatonStates: 32, 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, 109 NumberOfCodeBlocks, 109 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 770 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-29 19:44:11,556 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