./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread/sync01.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/sync01.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 8f929a317f167560539ae4b4d441a695b43dc484839e0d977f902275d758b932 --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 19:44:13,896 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 19:44:13,899 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 19:44:13,938 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 19:44:13,940 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 19:44:13,943 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 19:44:13,945 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 19:44:13,947 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 19:44:13,949 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 19:44:13,953 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 19:44:13,954 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 19:44:13,955 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 19:44:13,955 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 19:44:13,956 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 19:44:13,956 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 19:44:13,957 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 19:44:13,958 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 19:44:13,958 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 19:44:13,960 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 19:44:13,971 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 19:44:13,972 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 19:44:13,974 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 19:44:13,975 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 19:44:13,976 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 19:44:13,983 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 19:44:13,985 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 19:44:13,986 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 19:44:13,986 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 19:44:13,987 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 19:44:13,988 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 19:44:13,988 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 19:44:13,993 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 19:44:13,994 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 19:44:13,995 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 19:44:13,996 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 19:44:13,997 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 19:44:13,997 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 19:44:13,998 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 19:44:13,998 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 19:44:13,998 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 19:44:13,999 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 19:44:14,000 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 19:44:14,026 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 19:44:14,027 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 19:44:14,028 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 19:44:14,028 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 19:44:14,029 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 19:44:14,029 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 19:44:14,030 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 19:44:14,030 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 19:44:14,030 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 19:44:14,031 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 19:44:14,031 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 19:44:14,032 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 19:44:14,032 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 19:44:14,032 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 19:44:14,032 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 19:44:14,032 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 19:44:14,033 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 19:44:14,033 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 19:44:14,033 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 19:44:14,033 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 19:44:14,033 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 19:44:14,033 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 19:44:14,034 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 19:44:14,034 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 19:44:14,034 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 19:44:14,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 19:44:14,035 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 19:44:14,035 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 19:44:14,035 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 19:44:14,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 19:44:14,035 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 19:44:14,035 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 19:44:14,036 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 19:44:14,036 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 19:44:14,036 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f929a317f167560539ae4b4d441a695b43dc484839e0d977f902275d758b932 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 19:44:14,321 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 19:44:14,338 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 19:44:14,340 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 19:44:14,341 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 19:44:14,341 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 19:44:14,342 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/sync01.i [2023-08-29 19:44:15,429 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 19:44:15,719 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 19:44:15,720 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/sync01.i [2023-08-29 19:44:15,733 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b946a888f/a27842065ed6489f91e62e02208bb039/FLAG002fad0e9 [2023-08-29 19:44:15,748 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b946a888f/a27842065ed6489f91e62e02208bb039 [2023-08-29 19:44:15,750 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 19:44:15,752 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 19:44:15,754 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 19:44:15,754 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 19:44:15,756 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 19:44:15,757 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 07:44:15" (1/1) ... [2023-08-29 19:44:15,757 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3da126e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:44:15, skipping insertion in model container [2023-08-29 19:44:15,758 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 07:44:15" (1/1) ... [2023-08-29 19:44:15,762 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 19:44:15,806 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 19:44:16,187 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/sync01.i[42004,42017] [2023-08-29 19:44:16,191 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 19:44:16,207 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 19:44:16,261 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/sync01.i[42004,42017] [2023-08-29 19:44:16,263 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 19:44:16,353 INFO L208 MainTranslator]: Completed translation [2023-08-29 19:44:16,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:44:16 WrapperNode [2023-08-29 19:44:16,354 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 19:44:16,355 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 19:44:16,355 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 19:44:16,355 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 19:44:16,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:44:16" (1/1) ... [2023-08-29 19:44:16,391 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:44:16" (1/1) ... [2023-08-29 19:44:16,422 INFO L138 Inliner]: procedures = 268, calls = 46, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 73 [2023-08-29 19:44:16,422 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 19:44:16,423 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 19:44:16,424 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 19:44:16,424 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 19:44:16,431 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:44:16" (1/1) ... [2023-08-29 19:44:16,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:44:16" (1/1) ... [2023-08-29 19:44:16,443 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:44:16" (1/1) ... [2023-08-29 19:44:16,443 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:44:16" (1/1) ... [2023-08-29 19:44:16,451 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:44:16" (1/1) ... [2023-08-29 19:44:16,456 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:44:16" (1/1) ... [2023-08-29 19:44:16,459 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:44:16" (1/1) ... [2023-08-29 19:44:16,467 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:44:16" (1/1) ... [2023-08-29 19:44:16,469 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 19:44:16,473 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 19:44:16,474 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 19:44:16,474 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 19:44:16,474 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:44:16" (1/1) ... [2023-08-29 19:44:16,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 19:44:16,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 19:44:16,502 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 19:44:16,529 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 19:44:16,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 19:44:16,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 19:44:16,543 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 19:44:16,543 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-29 19:44:16,543 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-29 19:44:16,543 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-29 19:44:16,543 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-29 19:44:16,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 19:44:16,543 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 19:44:16,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 19:44:16,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 19:44:16,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 19:44:16,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 19:44:16,545 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 19:44:16,679 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 19:44:16,681 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 19:44:16,874 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 19:44:16,881 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 19:44:16,881 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-29 19:44:16,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 07:44:16 BoogieIcfgContainer [2023-08-29 19:44:16,883 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 19:44:16,885 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 19:44:16,885 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 19:44:16,888 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 19:44:16,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 07:44:15" (1/3) ... [2023-08-29 19:44:16,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70d2cac0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 07:44:16, skipping insertion in model container [2023-08-29 19:44:16,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:44:16" (2/3) ... [2023-08-29 19:44:16,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70d2cac0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 07:44:16, skipping insertion in model container [2023-08-29 19:44:16,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 07:44:16" (3/3) ... [2023-08-29 19:44:16,891 INFO L112 eAbstractionObserver]: Analyzing ICFG sync01.i [2023-08-29 19:44:16,906 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 19:44:16,906 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-29 19:44:16,907 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 19:44:17,004 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-29 19:44:17,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 115 transitions, 246 flow [2023-08-29 19:44:17,118 INFO L130 PetriNetUnfolder]: 5/113 cut-off events. [2023-08-29 19:44:17,119 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 19:44:17,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 113 events. 5/113 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 106 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2023-08-29 19:44:17,124 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 115 transitions, 246 flow [2023-08-29 19:44:17,128 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 111 places, 109 transitions, 230 flow [2023-08-29 19:44:17,132 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 19:44:17,151 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 111 places, 109 transitions, 230 flow [2023-08-29 19:44:17,155 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 111 places, 109 transitions, 230 flow [2023-08-29 19:44:17,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 109 transitions, 230 flow [2023-08-29 19:44:17,195 INFO L130 PetriNetUnfolder]: 5/109 cut-off events. [2023-08-29 19:44:17,196 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 19:44:17,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 109 events. 5/109 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 105 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2023-08-29 19:44:17,198 INFO L119 LiptonReduction]: Number of co-enabled transitions 1140 [2023-08-29 19:44:21,653 INFO L134 LiptonReduction]: Checked pairs total: 4085 [2023-08-29 19:44:21,654 INFO L136 LiptonReduction]: Total number of compositions: 100 [2023-08-29 19:44:21,664 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 19:44:21,669 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;@4e2768fd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 19:44:21,670 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-08-29 19:44:21,671 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 19:44:21,671 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 19:44:21,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:44:21,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 19:44:21,672 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 19:44:21,676 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:44:21,676 INFO L85 PathProgramCache]: Analyzing trace with hash 415, now seen corresponding path program 1 times [2023-08-29 19:44:21,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:44:21,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152599963] [2023-08-29 19:44:21,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:44:21,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:44:21,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:44:21,771 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 19:44:21,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:44:21,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152599963] [2023-08-29 19:44:21,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152599963] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:44:21,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:44:21,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 19:44:21,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773389514] [2023-08-29 19:44:21,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:44:21,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 19:44:21,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:44:21,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 19:44:21,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 19:44:21,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 215 [2023-08-29 19:44:21,805 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 84 flow. Second operand has 2 states, 2 states have (on average 107.5) internal successors, (215), 2 states have internal predecessors, (215), 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 19:44:21,805 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:44:21,805 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 215 [2023-08-29 19:44:21,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:44:21,932 INFO L130 PetriNetUnfolder]: 145/309 cut-off events. [2023-08-29 19:44:21,933 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-29 19:44:21,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 573 conditions, 309 events. 145/309 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1327 event pairs, 105 based on Foata normal form. 40/266 useless extension candidates. Maximal degree in co-relation 488. Up to 246 conditions per place. [2023-08-29 19:44:21,936 INFO L137 encePairwiseOnDemand]: 211/215 looper letters, 24 selfloop transitions, 0 changer transitions 0/32 dead transitions. [2023-08-29 19:44:21,937 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 32 transitions, 124 flow [2023-08-29 19:44:21,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 19:44:21,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 19:44:21,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 242 transitions. [2023-08-29 19:44:21,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5627906976744186 [2023-08-29 19:44:21,952 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 242 transitions. [2023-08-29 19:44:21,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 242 transitions. [2023-08-29 19:44:21,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:44:21,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 242 transitions. [2023-08-29 19:44:21,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 121.0) internal successors, (242), 2 states have internal predecessors, (242), 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 19:44:21,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 215.0) internal successors, (645), 3 states have internal predecessors, (645), 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 19:44:21,961 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 215.0) internal successors, (645), 3 states have internal predecessors, (645), 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 19:44:21,963 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 84 flow. Second operand 2 states and 242 transitions. [2023-08-29 19:44:21,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 32 transitions, 124 flow [2023-08-29 19:44:21,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 32 transitions, 116 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-29 19:44:21,967 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 68 flow [2023-08-29 19:44:21,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=68, PETRI_PLACES=34, PETRI_TRANSITIONS=32} [2023-08-29 19:44:21,971 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -5 predicate places. [2023-08-29 19:44:21,972 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 68 flow [2023-08-29 19:44:21,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 107.5) internal successors, (215), 2 states have internal predecessors, (215), 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 19:44:21,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:44:21,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 19:44:21,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 19:44:21,973 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 19:44:21,973 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:44:21,974 INFO L85 PathProgramCache]: Analyzing trace with hash 408882, now seen corresponding path program 1 times [2023-08-29 19:44:21,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:44:21,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078405530] [2023-08-29 19:44:21,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:44:21,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:44:22,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:44:22,211 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 19:44:22,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:44:22,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078405530] [2023-08-29 19:44:22,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078405530] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:44:22,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:44:22,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 19:44:22,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901337724] [2023-08-29 19:44:22,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:44:22,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 19:44:22,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:44:22,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 19:44:22,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 19:44:22,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 215 [2023-08-29 19:44:22,247 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 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 19:44:22,247 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:44:22,248 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 215 [2023-08-29 19:44:22,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:44:22,297 INFO L130 PetriNetUnfolder]: 137/289 cut-off events. [2023-08-29 19:44:22,298 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 19:44:22,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 526 conditions, 289 events. 137/289 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1223 event pairs, 99 based on Foata normal form. 0/215 useless extension candidates. Maximal degree in co-relation 523. Up to 228 conditions per place. [2023-08-29 19:44:22,300 INFO L137 encePairwiseOnDemand]: 211/215 looper letters, 20 selfloop transitions, 2 changer transitions 0/30 dead transitions. [2023-08-29 19:44:22,300 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 30 transitions, 108 flow [2023-08-29 19:44:22,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 19:44:22,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 19:44:22,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 330 transitions. [2023-08-29 19:44:22,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5116279069767442 [2023-08-29 19:44:22,303 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 330 transitions. [2023-08-29 19:44:22,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 330 transitions. [2023-08-29 19:44:22,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:44:22,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 330 transitions. [2023-08-29 19:44:22,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:44:22,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 215.0) internal successors, (860), 4 states have internal predecessors, (860), 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 19:44:22,308 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 215.0) internal successors, (860), 4 states have internal predecessors, (860), 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 19:44:22,308 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 68 flow. Second operand 3 states and 330 transitions. [2023-08-29 19:44:22,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 30 transitions, 108 flow [2023-08-29 19:44:22,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 30 transitions, 108 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 19:44:22,310 INFO L231 Difference]: Finished difference. Result has 34 places, 30 transitions, 68 flow [2023-08-29 19:44:22,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=34, PETRI_TRANSITIONS=30} [2023-08-29 19:44:22,311 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -5 predicate places. [2023-08-29 19:44:22,311 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 30 transitions, 68 flow [2023-08-29 19:44:22,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 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 19:44:22,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:44:22,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 19:44:22,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 19:44:22,312 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 19:44:22,312 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:44:22,313 INFO L85 PathProgramCache]: Analyzing trace with hash 408881, now seen corresponding path program 1 times [2023-08-29 19:44:22,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:44:22,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66228489] [2023-08-29 19:44:22,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:44:22,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:44:22,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:44:22,369 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 19:44:22,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:44:22,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66228489] [2023-08-29 19:44:22,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66228489] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:44:22,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:44:22,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 19:44:22,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692235371] [2023-08-29 19:44:22,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:44:22,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 19:44:22,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:44:22,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 19:44:22,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 19:44:22,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 215 [2023-08-29 19:44:22,406 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 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 19:44:22,406 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:44:22,406 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 215 [2023-08-29 19:44:22,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:44:22,457 INFO L130 PetriNetUnfolder]: 129/269 cut-off events. [2023-08-29 19:44:22,458 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 19:44:22,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 493 conditions, 269 events. 129/269 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1121 event pairs, 93 based on Foata normal form. 0/205 useless extension candidates. Maximal degree in co-relation 489. Up to 212 conditions per place. [2023-08-29 19:44:22,461 INFO L137 encePairwiseOnDemand]: 211/215 looper letters, 18 selfloop transitions, 2 changer transitions 0/28 dead transitions. [2023-08-29 19:44:22,462 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 28 transitions, 104 flow [2023-08-29 19:44:22,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 19:44:22,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 19:44:22,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 316 transitions. [2023-08-29 19:44:22,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48992248062015503 [2023-08-29 19:44:22,466 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 316 transitions. [2023-08-29 19:44:22,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 316 transitions. [2023-08-29 19:44:22,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:44:22,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 316 transitions. [2023-08-29 19:44:22,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 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 19:44:22,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 215.0) internal successors, (860), 4 states have internal predecessors, (860), 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 19:44:22,472 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 215.0) internal successors, (860), 4 states have internal predecessors, (860), 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 19:44:22,472 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 68 flow. Second operand 3 states and 316 transitions. [2023-08-29 19:44:22,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 28 transitions, 104 flow [2023-08-29 19:44:22,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 28 transitions, 100 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 19:44:22,473 INFO L231 Difference]: Finished difference. Result has 32 places, 28 transitions, 64 flow [2023-08-29 19:44:22,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=30, 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=32, PETRI_TRANSITIONS=28} [2023-08-29 19:44:22,475 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -7 predicate places. [2023-08-29 19:44:22,475 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 28 transitions, 64 flow [2023-08-29 19:44:22,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 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 19:44:22,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:44:22,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 19:44:22,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 19:44:22,476 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 19:44:22,477 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:44:22,478 INFO L85 PathProgramCache]: Analyzing trace with hash 392942834, now seen corresponding path program 1 times [2023-08-29 19:44:22,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:44:22,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531377648] [2023-08-29 19:44:22,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:44:22,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:44:22,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:44:22,602 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 19:44:22,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:44:22,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531377648] [2023-08-29 19:44:22,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531377648] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:44:22,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:44:22,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 19:44:22,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799450753] [2023-08-29 19:44:22,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:44:22,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 19:44:22,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:44:22,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 19:44:22,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-29 19:44:22,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 215 [2023-08-29 19:44:22,668 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 64 flow. Second operand has 4 states, 4 states have (on average 95.25) internal successors, (381), 4 states have internal predecessors, (381), 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 19:44:22,669 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:44:22,669 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 215 [2023-08-29 19:44:22,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:44:22,714 INFO L130 PetriNetUnfolder]: 97/209 cut-off events. [2023-08-29 19:44:22,715 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 19:44:22,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 385 conditions, 209 events. 97/209 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 790 event pairs, 69 based on Foata normal form. 0/168 useless extension candidates. Maximal degree in co-relation 381. Up to 164 conditions per place. [2023-08-29 19:44:22,716 INFO L137 encePairwiseOnDemand]: 212/215 looper letters, 17 selfloop transitions, 2 changer transitions 0/27 dead transitions. [2023-08-29 19:44:22,716 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 27 transitions, 100 flow [2023-08-29 19:44:22,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 19:44:22,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 19:44:22,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 302 transitions. [2023-08-29 19:44:22,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4682170542635659 [2023-08-29 19:44:22,718 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 302 transitions. [2023-08-29 19:44:22,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 302 transitions. [2023-08-29 19:44:22,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:44:22,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 302 transitions. [2023-08-29 19:44:22,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 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 19:44:22,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 215.0) internal successors, (860), 4 states have internal predecessors, (860), 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 19:44:22,722 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 215.0) internal successors, (860), 4 states have internal predecessors, (860), 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 19:44:22,722 INFO L175 Difference]: Start difference. First operand has 32 places, 28 transitions, 64 flow. Second operand 3 states and 302 transitions. [2023-08-29 19:44:22,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 27 transitions, 100 flow [2023-08-29 19:44:22,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 27 transitions, 96 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 19:44:22,723 INFO L231 Difference]: Finished difference. Result has 31 places, 27 transitions, 62 flow [2023-08-29 19:44:22,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=31, PETRI_TRANSITIONS=27} [2023-08-29 19:44:22,724 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -8 predicate places. [2023-08-29 19:44:22,724 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 27 transitions, 62 flow [2023-08-29 19:44:22,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.25) internal successors, (381), 4 states have internal predecessors, (381), 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 19:44:22,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:44:22,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 19:44:22,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 19:44:22,726 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 19:44:22,726 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:44:22,726 INFO L85 PathProgramCache]: Analyzing trace with hash 392942835, now seen corresponding path program 1 times [2023-08-29 19:44:22,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:44:22,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337709143] [2023-08-29 19:44:22,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:44:22,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:44:22,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:44:22,768 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 19:44:22,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:44:22,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337709143] [2023-08-29 19:44:22,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337709143] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:44:22,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:44:22,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 19:44:22,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405305674] [2023-08-29 19:44:22,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:44:22,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 19:44:22,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:44:22,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 19:44:22,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 19:44:22,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 215 [2023-08-29 19:44:22,798 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 27 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 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 19:44:22,798 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:44:22,798 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 215 [2023-08-29 19:44:22,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:44:22,831 INFO L130 PetriNetUnfolder]: 65/149 cut-off events. [2023-08-29 19:44:22,832 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 19:44:22,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277 conditions, 149 events. 65/149 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 492 event pairs, 45 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 273. Up to 116 conditions per place. [2023-08-29 19:44:22,833 INFO L137 encePairwiseOnDemand]: 212/215 looper letters, 16 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2023-08-29 19:44:22,833 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 26 transitions, 96 flow [2023-08-29 19:44:22,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 19:44:22,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 19:44:22,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 316 transitions. [2023-08-29 19:44:22,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48992248062015503 [2023-08-29 19:44:22,835 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 316 transitions. [2023-08-29 19:44:22,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 316 transitions. [2023-08-29 19:44:22,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:44:22,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 316 transitions. [2023-08-29 19:44:22,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 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 19:44:22,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 215.0) internal successors, (860), 4 states have internal predecessors, (860), 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 19:44:22,838 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 215.0) internal successors, (860), 4 states have internal predecessors, (860), 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 19:44:22,838 INFO L175 Difference]: Start difference. First operand has 31 places, 27 transitions, 62 flow. Second operand 3 states and 316 transitions. [2023-08-29 19:44:22,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 26 transitions, 96 flow [2023-08-29 19:44:22,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 26 transitions, 92 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 19:44:22,839 INFO L231 Difference]: Finished difference. Result has 30 places, 26 transitions, 60 flow [2023-08-29 19:44:22,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=28, 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=30, PETRI_TRANSITIONS=26} [2023-08-29 19:44:22,840 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -9 predicate places. [2023-08-29 19:44:22,840 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 26 transitions, 60 flow [2023-08-29 19:44:22,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 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 19:44:22,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:44:22,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:44:22,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 19:44:22,841 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 19:44:22,841 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:44:22,841 INFO L85 PathProgramCache]: Analyzing trace with hash 309943645, now seen corresponding path program 1 times [2023-08-29 19:44:22,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:44:22,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356951706] [2023-08-29 19:44:22,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:44:22,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:44:22,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:44:22,900 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 19:44:22,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:44:22,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356951706] [2023-08-29 19:44:22,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356951706] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:44:22,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:44:22,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 19:44:22,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761015866] [2023-08-29 19:44:22,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:44:22,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 19:44:22,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:44:22,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 19:44:22,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 19:44:22,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 215 [2023-08-29 19:44:22,917 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 26 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 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 19:44:22,917 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:44:22,917 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 215 [2023-08-29 19:44:22,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:44:22,950 INFO L130 PetriNetUnfolder]: 39/95 cut-off events. [2023-08-29 19:44:22,950 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 19:44:22,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 95 events. 39/95 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 187 event pairs, 15 based on Foata normal form. 10/102 useless extension candidates. Maximal degree in co-relation 179. Up to 53 conditions per place. [2023-08-29 19:44:22,951 INFO L137 encePairwiseOnDemand]: 210/215 looper letters, 18 selfloop transitions, 3 changer transitions 0/26 dead transitions. [2023-08-29 19:44:22,951 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 26 transitions, 102 flow [2023-08-29 19:44:22,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 19:44:22,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 19:44:22,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 320 transitions. [2023-08-29 19:44:22,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49612403100775193 [2023-08-29 19:44:22,953 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 320 transitions. [2023-08-29 19:44:22,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 320 transitions. [2023-08-29 19:44:22,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:44:22,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 320 transitions. [2023-08-29 19:44:22,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 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 19:44:22,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 215.0) internal successors, (860), 4 states have internal predecessors, (860), 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 19:44:22,956 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 215.0) internal successors, (860), 4 states have internal predecessors, (860), 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 19:44:22,956 INFO L175 Difference]: Start difference. First operand has 30 places, 26 transitions, 60 flow. Second operand 3 states and 320 transitions. [2023-08-29 19:44:22,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 26 transitions, 102 flow [2023-08-29 19:44:22,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 26 transitions, 98 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 19:44:22,957 INFO L231 Difference]: Finished difference. Result has 29 places, 23 transitions, 61 flow [2023-08-29 19:44:22,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=61, PETRI_PLACES=29, PETRI_TRANSITIONS=23} [2023-08-29 19:44:22,960 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -10 predicate places. [2023-08-29 19:44:22,960 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 23 transitions, 61 flow [2023-08-29 19:44:22,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 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 19:44:22,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:44:22,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:44:22,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 19:44:22,961 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 19:44:22,961 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:44:22,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1157357887, now seen corresponding path program 2 times [2023-08-29 19:44:22,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:44:22,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253221570] [2023-08-29 19:44:22,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:44:22,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:44:22,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:44:23,114 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 19:44:23,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:44:23,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253221570] [2023-08-29 19:44:23,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253221570] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:44:23,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:44:23,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 19:44:23,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172510004] [2023-08-29 19:44:23,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:44:23,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 19:44:23,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:44:23,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 19:44:23,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 19:44:23,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 215 [2023-08-29 19:44:23,174 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 23 transitions, 61 flow. Second operand has 5 states, 5 states have (on average 90.4) internal successors, (452), 5 states have internal predecessors, (452), 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 19:44:23,174 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:44:23,174 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 215 [2023-08-29 19:44:23,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:44:23,246 INFO L130 PetriNetUnfolder]: 51/119 cut-off events. [2023-08-29 19:44:23,247 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-29 19:44:23,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 119 events. 51/119 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 288 event pairs, 15 based on Foata normal form. 12/131 useless extension candidates. Maximal degree in co-relation 249. Up to 69 conditions per place. [2023-08-29 19:44:23,248 INFO L137 encePairwiseOnDemand]: 208/215 looper letters, 22 selfloop transitions, 7 changer transitions 0/31 dead transitions. [2023-08-29 19:44:23,248 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 31 transitions, 136 flow [2023-08-29 19:44:23,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 19:44:23,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 19:44:23,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 380 transitions. [2023-08-29 19:44:23,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4418604651162791 [2023-08-29 19:44:23,250 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 380 transitions. [2023-08-29 19:44:23,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 380 transitions. [2023-08-29 19:44:23,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:44:23,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 380 transitions. [2023-08-29 19:44:23,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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 19:44:23,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 215.0) internal successors, (1075), 5 states have internal predecessors, (1075), 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 19:44:23,253 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 215.0) internal successors, (1075), 5 states have internal predecessors, (1075), 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 19:44:23,253 INFO L175 Difference]: Start difference. First operand has 29 places, 23 transitions, 61 flow. Second operand 4 states and 380 transitions. [2023-08-29 19:44:23,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 31 transitions, 136 flow [2023-08-29 19:44:23,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 31 transitions, 130 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 19:44:23,255 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 96 flow [2023-08-29 19:44:23,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=96, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2023-08-29 19:44:23,256 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -7 predicate places. [2023-08-29 19:44:23,256 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 96 flow [2023-08-29 19:44:23,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 90.4) internal successors, (452), 5 states have internal predecessors, (452), 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 19:44:23,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:44:23,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:44:23,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 19:44:23,257 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 19:44:23,257 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:44:23,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1023156440, now seen corresponding path program 1 times [2023-08-29 19:44:23,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:44:23,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176106489] [2023-08-29 19:44:23,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:44:23,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:44:23,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:44:23,337 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 19:44:23,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:44:23,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176106489] [2023-08-29 19:44:23,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176106489] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:44:23,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:44:23,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 19:44:23,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791154180] [2023-08-29 19:44:23,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:44:23,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 19:44:23,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:44:23,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 19:44:23,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 19:44:23,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 215 [2023-08-29 19:44:23,393 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 96 flow. Second operand has 5 states, 5 states have (on average 90.4) internal successors, (452), 5 states have internal predecessors, (452), 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 19:44:23,393 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:44:23,393 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 215 [2023-08-29 19:44:23,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:44:23,475 INFO L130 PetriNetUnfolder]: 30/84 cut-off events. [2023-08-29 19:44:23,475 INFO L131 PetriNetUnfolder]: For 51/51 co-relation queries the response was YES. [2023-08-29 19:44:23,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 232 conditions, 84 events. 30/84 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 175 event pairs, 3 based on Foata normal form. 4/88 useless extension candidates. Maximal degree in co-relation 225. Up to 30 conditions per place. [2023-08-29 19:44:23,476 INFO L137 encePairwiseOnDemand]: 206/215 looper letters, 18 selfloop transitions, 12 changer transitions 0/32 dead transitions. [2023-08-29 19:44:23,476 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 32 transitions, 169 flow [2023-08-29 19:44:23,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 19:44:23,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 19:44:23,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 467 transitions. [2023-08-29 19:44:23,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4344186046511628 [2023-08-29 19:44:23,478 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 467 transitions. [2023-08-29 19:44:23,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 467 transitions. [2023-08-29 19:44:23,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:44:23,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 467 transitions. [2023-08-29 19:44:23,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 93.4) internal successors, (467), 5 states have internal predecessors, (467), 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 19:44:23,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 215.0) internal successors, (1290), 6 states have internal predecessors, (1290), 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 19:44:23,482 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 215.0) internal successors, (1290), 6 states have internal predecessors, (1290), 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 19:44:23,482 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 96 flow. Second operand 5 states and 467 transitions. [2023-08-29 19:44:23,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 32 transitions, 169 flow [2023-08-29 19:44:23,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 32 transitions, 164 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 19:44:23,484 INFO L231 Difference]: Finished difference. Result has 34 places, 26 transitions, 115 flow [2023-08-29 19:44:23,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=115, PETRI_PLACES=34, PETRI_TRANSITIONS=26} [2023-08-29 19:44:23,485 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -5 predicate places. [2023-08-29 19:44:23,485 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 26 transitions, 115 flow [2023-08-29 19:44:23,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 90.4) internal successors, (452), 5 states have internal predecessors, (452), 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 19:44:23,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:44:23,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:44:23,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 19:44:23,486 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 19:44:23,486 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:44:23,486 INFO L85 PathProgramCache]: Analyzing trace with hash 587784483, now seen corresponding path program 3 times [2023-08-29 19:44:23,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:44:23,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896111130] [2023-08-29 19:44:23,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:44:23,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:44:23,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:44:23,593 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 19:44:23,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:44:23,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896111130] [2023-08-29 19:44:23,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896111130] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:44:23,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:44:23,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 19:44:23,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924885527] [2023-08-29 19:44:23,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:44:23,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 19:44:23,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:44:23,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 19:44:23,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-29 19:44:23,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 215 [2023-08-29 19:44:23,625 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 26 transitions, 115 flow. Second operand has 6 states, 6 states have (on average 96.16666666666667) internal successors, (577), 6 states have internal predecessors, (577), 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 19:44:23,625 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:44:23,625 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 215 [2023-08-29 19:44:23,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:44:23,699 INFO L130 PetriNetUnfolder]: 27/77 cut-off events. [2023-08-29 19:44:23,699 INFO L131 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2023-08-29 19:44:23,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 77 events. 27/77 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 150 event pairs, 12 based on Foata normal form. 3/78 useless extension candidates. Maximal degree in co-relation 232. Up to 45 conditions per place. [2023-08-29 19:44:23,700 INFO L137 encePairwiseOnDemand]: 208/215 looper letters, 21 selfloop transitions, 5 changer transitions 0/27 dead transitions. [2023-08-29 19:44:23,700 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 27 transitions, 165 flow [2023-08-29 19:44:23,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 19:44:23,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 19:44:23,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 586 transitions. [2023-08-29 19:44:23,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4542635658914729 [2023-08-29 19:44:23,703 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 586 transitions. [2023-08-29 19:44:23,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 586 transitions. [2023-08-29 19:44:23,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:44:23,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 586 transitions. [2023-08-29 19:44:23,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 97.66666666666667) internal successors, (586), 6 states have internal predecessors, (586), 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 19:44:23,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 215.0) internal successors, (1505), 7 states have internal predecessors, (1505), 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 19:44:23,707 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 215.0) internal successors, (1505), 7 states have internal predecessors, (1505), 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 19:44:23,707 INFO L175 Difference]: Start difference. First operand has 34 places, 26 transitions, 115 flow. Second operand 6 states and 586 transitions. [2023-08-29 19:44:23,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 27 transitions, 165 flow [2023-08-29 19:44:23,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 27 transitions, 125 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-08-29 19:44:23,709 INFO L231 Difference]: Finished difference. Result has 33 places, 24 transitions, 81 flow [2023-08-29 19:44:23,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=81, PETRI_PLACES=33, PETRI_TRANSITIONS=24} [2023-08-29 19:44:23,710 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -6 predicate places. [2023-08-29 19:44:23,710 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 24 transitions, 81 flow [2023-08-29 19:44:23,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 96.16666666666667) internal successors, (577), 6 states have internal predecessors, (577), 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 19:44:23,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:44:23,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:44:23,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 19:44:23,711 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 19:44:23,712 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:44:23,712 INFO L85 PathProgramCache]: Analyzing trace with hash 587784518, now seen corresponding path program 2 times [2023-08-29 19:44:23,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:44:23,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433803291] [2023-08-29 19:44:23,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:44:23,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:44:23,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:44:23,945 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 19:44:23,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:44:23,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433803291] [2023-08-29 19:44:23,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433803291] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:44:23,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:44:23,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 19:44:23,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808679326] [2023-08-29 19:44:23,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:44:23,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 19:44:23,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:44:23,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 19:44:23,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-29 19:44:24,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 215 [2023-08-29 19:44:24,032 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 24 transitions, 81 flow. Second operand has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 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 19:44:24,032 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:44:24,032 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 215 [2023-08-29 19:44:24,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:44:24,056 INFO L130 PetriNetUnfolder]: 23/71 cut-off events. [2023-08-29 19:44:24,056 INFO L131 PetriNetUnfolder]: For 15/16 co-relation queries the response was YES. [2023-08-29 19:44:24,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 71 events. 23/71 cut-off events. For 15/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 145 event pairs, 17 based on Foata normal form. 1/71 useless extension candidates. Maximal degree in co-relation 166. Up to 61 conditions per place. [2023-08-29 19:44:24,057 INFO L137 encePairwiseOnDemand]: 213/215 looper letters, 0 selfloop transitions, 0 changer transitions 23/23 dead transitions. [2023-08-29 19:44:24,057 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 23 transitions, 114 flow [2023-08-29 19:44:24,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 19:44:24,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 19:44:24,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 303 transitions. [2023-08-29 19:44:24,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4697674418604651 [2023-08-29 19:44:24,059 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 303 transitions. [2023-08-29 19:44:24,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 303 transitions. [2023-08-29 19:44:24,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:44:24,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 303 transitions. [2023-08-29 19:44:24,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 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 19:44:24,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 215.0) internal successors, (860), 4 states have internal predecessors, (860), 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 19:44:24,062 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 215.0) internal successors, (860), 4 states have internal predecessors, (860), 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 19:44:24,062 INFO L175 Difference]: Start difference. First operand has 33 places, 24 transitions, 81 flow. Second operand 3 states and 303 transitions. [2023-08-29 19:44:24,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 23 transitions, 114 flow [2023-08-29 19:44:24,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 23 transitions, 104 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-29 19:44:24,064 INFO L231 Difference]: Finished difference. Result has 29 places, 0 transitions, 0 flow [2023-08-29 19:44:24,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=29, PETRI_TRANSITIONS=0} [2023-08-29 19:44:24,066 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -10 predicate places. [2023-08-29 19:44:24,066 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 0 transitions, 0 flow [2023-08-29 19:44:24,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 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 19:44:24,071 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 12 remaining) [2023-08-29 19:44:24,071 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2023-08-29 19:44:24,072 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2023-08-29 19:44:24,072 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2023-08-29 19:44:24,072 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2023-08-29 19:44:24,072 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2023-08-29 19:44:24,072 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2023-08-29 19:44:24,072 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2023-08-29 19:44:24,073 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (3 of 12 remaining) [2023-08-29 19:44:24,073 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (2 of 12 remaining) [2023-08-29 19:44:24,073 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2023-08-29 19:44:24,073 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2023-08-29 19:44:24,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-29 19:44:24,074 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1] [2023-08-29 19:44:24,076 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 19:44:24,077 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 19:44:24,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 07:44:24 BasicIcfg [2023-08-29 19:44:24,082 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 19:44:24,082 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 19:44:24,082 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 19:44:24,083 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 19:44:24,083 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 07:44:16" (3/4) ... [2023-08-29 19:44:24,085 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-29 19:44:24,091 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-29 19:44:24,091 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-29 19:44:24,095 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2023-08-29 19:44:24,096 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-29 19:44:24,096 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-29 19:44:24,096 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-29 19:44:24,127 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-29 19:44:24,127 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 19:44:24,128 INFO L158 Benchmark]: Toolchain (without parser) took 8376.12ms. Allocated memory was 69.2MB in the beginning and 121.6MB in the end (delta: 52.4MB). Free memory was 45.8MB in the beginning and 34.4MB in the end (delta: 11.4MB). Peak memory consumption was 68.2MB. Max. memory is 16.1GB. [2023-08-29 19:44:24,128 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 56.6MB. Free memory was 34.4MB in the beginning and 34.4MB in the end (delta: 29.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 19:44:24,128 INFO L158 Benchmark]: CACSL2BoogieTranslator took 600.26ms. Allocated memory is still 69.2MB. Free memory was 45.5MB in the beginning and 35.6MB in the end (delta: 9.9MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. [2023-08-29 19:44:24,128 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.63ms. Allocated memory is still 69.2MB. Free memory was 35.6MB in the beginning and 33.2MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 19:44:24,128 INFO L158 Benchmark]: Boogie Preprocessor took 49.24ms. Allocated memory is still 69.2MB. Free memory was 33.2MB in the beginning and 31.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 19:44:24,129 INFO L158 Benchmark]: RCFGBuilder took 410.06ms. Allocated memory is still 69.2MB. Free memory was 31.4MB in the beginning and 36.3MB in the end (delta: -4.9MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. [2023-08-29 19:44:24,130 INFO L158 Benchmark]: TraceAbstraction took 7196.78ms. Allocated memory was 69.2MB in the beginning and 121.6MB in the end (delta: 52.4MB). Free memory was 35.4MB in the beginning and 37.5MB in the end (delta: -2.1MB). Peak memory consumption was 48.5MB. Max. memory is 16.1GB. [2023-08-29 19:44:24,130 INFO L158 Benchmark]: Witness Printer took 45.09ms. Allocated memory is still 121.6MB. Free memory was 37.5MB in the beginning and 34.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-29 19:44:24,131 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 56.6MB. Free memory was 34.4MB in the beginning and 34.4MB in the end (delta: 29.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 600.26ms. Allocated memory is still 69.2MB. Free memory was 45.5MB in the beginning and 35.6MB in the end (delta: 9.9MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.63ms. Allocated memory is still 69.2MB. Free memory was 35.6MB in the beginning and 33.2MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.24ms. Allocated memory is still 69.2MB. Free memory was 33.2MB in the beginning and 31.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 410.06ms. Allocated memory is still 69.2MB. Free memory was 31.4MB in the beginning and 36.3MB in the end (delta: -4.9MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. * TraceAbstraction took 7196.78ms. Allocated memory was 69.2MB in the beginning and 121.6MB in the end (delta: 52.4MB). Free memory was 35.4MB in the beginning and 37.5MB in the end (delta: -2.1MB). Peak memory consumption was 48.5MB. Max. memory is 16.1GB. * Witness Printer took 45.09ms. Allocated memory is still 121.6MB. Free memory was 37.5MB in the beginning and 34.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.5s, 111 PlacesBefore, 39 PlacesAfterwards, 109 TransitionsBefore, 36 TransitionsAfterwards, 1140 CoEnabledTransitionPairs, 7 FixpointIterations, 65 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 100 TotalNumberOfCompositions, 4085 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1500, independent: 1322, independent conditional: 0, independent unconditional: 1322, dependent: 178, dependent conditional: 0, dependent unconditional: 178, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 564, independent: 533, independent conditional: 0, independent unconditional: 533, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1500, independent: 789, independent conditional: 0, independent unconditional: 789, dependent: 147, dependent conditional: 0, dependent unconditional: 147, unknown: 564, unknown conditional: 0, unknown unconditional: 564] , Statistics on independence cache: Total cache size (in pairs): 86, Positive cache size: 69, Positive conditional cache size: 0, Positive unconditional cache size: 69, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, 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: 966]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 953]: 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, 141 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: 7.0s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 704 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 362 mSDsluCounter, 169 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 41 mSDsCounter, 85 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 930 IncrementalHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 85 mSolverCounterUnsat, 128 mSDtfsCounter, 930 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=115occurred in iteration=8, InterpolantAutomatonStates: 35, 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, 112 NumberOfCodeBlocks, 112 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 591 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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 19:44:24,160 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