./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.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-deagle/arithmetic_prog_ok.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 29016034e4102bf62d4fcba069301a54da1d77dfd5739e4cf52e395ddaa22e38 --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 [2023-08-30 01:33:14,909 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 01:33:14,911 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 01:33:14,948 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 01:33:14,950 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 01:33:14,952 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 01:33:14,954 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 01:33:14,956 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 01:33:14,958 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 01:33:14,962 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 01:33:14,963 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 01:33:14,964 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 01:33:14,965 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 01:33:14,966 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 01:33:14,967 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 01:33:14,970 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 01:33:14,971 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 01:33:14,972 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 01:33:14,974 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 01:33:14,978 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 01:33:14,979 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 01:33:14,980 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 01:33:14,981 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 01:33:14,981 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 01:33:14,986 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 01:33:14,987 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 01:33:14,987 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 01:33:14,988 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 01:33:14,989 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 01:33:14,990 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 01:33:14,990 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 01:33:14,995 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 01:33:14,996 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 01:33:14,997 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 01:33:14,998 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 01:33:14,998 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 01:33:14,998 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 01:33:14,999 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 01:33:14,999 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 01:33:14,999 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 01:33:15,000 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 01:33:15,001 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 01:33:15,037 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 01:33:15,037 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 01:33:15,037 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 01:33:15,037 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 01:33:15,037 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 01:33:15,038 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 01:33:15,038 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 01:33:15,038 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 01:33:15,038 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 01:33:15,038 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 01:33:15,038 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 01:33:15,038 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 01:33:15,038 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 01:33:15,038 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 01:33:15,039 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 01:33:15,039 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 01:33:15,039 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 01:33:15,039 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 01:33:15,039 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 01:33:15,039 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 01:33:15,039 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 01:33:15,039 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 01:33:15,039 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 01:33:15,039 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 01:33:15,039 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 01:33:15,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 01:33:15,040 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 01:33:15,040 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 01:33:15,040 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 01:33:15,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 01:33:15,040 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 01:33:15,040 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 01:33:15,040 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 01:33:15,040 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 01:33:15,040 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29016034e4102bf62d4fcba069301a54da1d77dfd5739e4cf52e395ddaa22e38 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 01:33:15,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 01:33:15,325 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 01:33:15,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 01:33:15,328 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 01:33:15,328 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 01:33:15,329 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i [2023-08-30 01:33:16,402 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 01:33:16,628 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 01:33:16,629 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i [2023-08-30 01:33:16,640 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9018e804/56b344ec79bb4167b952c1e7390eabad/FLAG3034e454b [2023-08-30 01:33:16,649 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9018e804/56b344ec79bb4167b952c1e7390eabad [2023-08-30 01:33:16,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 01:33:16,652 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 01:33:16,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 01:33:16,658 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 01:33:16,660 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 01:33:16,661 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 01:33:16" (1/1) ... [2023-08-30 01:33:16,661 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73a94478 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:33:16, skipping insertion in model container [2023-08-30 01:33:16,661 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 01:33:16" (1/1) ... [2023-08-30 01:33:16,665 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 01:33:16,700 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 01:33:16,949 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-deagle/arithmetic_prog_ok.i[39757,39770] [2023-08-30 01:33:16,959 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 01:33:16,976 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 01:33:17,011 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-deagle/arithmetic_prog_ok.i[39757,39770] [2023-08-30 01:33:17,016 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 01:33:17,066 INFO L208 MainTranslator]: Completed translation [2023-08-30 01:33:17,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:33:17 WrapperNode [2023-08-30 01:33:17,066 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 01:33:17,067 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 01:33:17,067 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 01:33:17,068 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 01:33:17,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:33:17" (1/1) ... [2023-08-30 01:33:17,089 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:33:17" (1/1) ... [2023-08-30 01:33:17,104 INFO L138 Inliner]: procedures = 243, calls = 50, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 81 [2023-08-30 01:33:17,105 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 01:33:17,106 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 01:33:17,106 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 01:33:17,106 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 01:33:17,113 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:33:17" (1/1) ... [2023-08-30 01:33:17,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:33:17" (1/1) ... [2023-08-30 01:33:17,116 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:33:17" (1/1) ... [2023-08-30 01:33:17,116 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:33:17" (1/1) ... [2023-08-30 01:33:17,121 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:33:17" (1/1) ... [2023-08-30 01:33:17,124 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:33:17" (1/1) ... [2023-08-30 01:33:17,137 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:33:17" (1/1) ... [2023-08-30 01:33:17,138 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:33:17" (1/1) ... [2023-08-30 01:33:17,141 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 01:33:17,142 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 01:33:17,142 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 01:33:17,142 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 01:33:17,142 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:33:17" (1/1) ... [2023-08-30 01:33:17,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 01:33:17,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 01:33:17,168 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) [2023-08-30 01:33:17,181 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 [2023-08-30 01:33:17,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 01:33:17,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 01:33:17,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-08-30 01:33:17,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 01:33:17,196 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 01:33:17,196 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 01:33:17,196 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 01:33:17,196 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 01:33:17,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 01:33:17,197 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 01:33:17,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 01:33:17,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 01:33:17,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 01:33:17,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 01:33:17,198 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 01:33:17,325 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 01:33:17,330 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 01:33:17,519 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 01:33:17,524 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 01:33:17,524 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 01:33:17,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 01:33:17 BoogieIcfgContainer [2023-08-30 01:33:17,526 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 01:33:17,527 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 01:33:17,527 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 01:33:17,529 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 01:33:17,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 01:33:16" (1/3) ... [2023-08-30 01:33:17,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a5cd547 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 01:33:17, skipping insertion in model container [2023-08-30 01:33:17,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:33:17" (2/3) ... [2023-08-30 01:33:17,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a5cd547 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 01:33:17, skipping insertion in model container [2023-08-30 01:33:17,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 01:33:17" (3/3) ... [2023-08-30 01:33:17,531 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_ok.i [2023-08-30 01:33:17,542 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 01:33:17,542 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-30 01:33:17,542 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 01:33:17,589 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 01:33:17,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 143 transitions, 302 flow [2023-08-30 01:33:17,686 INFO L130 PetriNetUnfolder]: 10/141 cut-off events. [2023-08-30 01:33:17,687 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 01:33:17,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 141 events. 10/141 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 180 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 87. Up to 3 conditions per place. [2023-08-30 01:33:17,692 INFO L82 GeneralOperation]: Start removeDead. Operand has 140 places, 143 transitions, 302 flow [2023-08-30 01:33:17,695 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 137 transitions, 286 flow [2023-08-30 01:33:17,698 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 01:33:17,705 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 134 places, 137 transitions, 286 flow [2023-08-30 01:33:17,707 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 134 places, 137 transitions, 286 flow [2023-08-30 01:33:17,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 137 transitions, 286 flow [2023-08-30 01:33:17,739 INFO L130 PetriNetUnfolder]: 10/137 cut-off events. [2023-08-30 01:33:17,742 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 01:33:17,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 137 events. 10/137 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 179 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 87. Up to 3 conditions per place. [2023-08-30 01:33:17,746 INFO L119 LiptonReduction]: Number of co-enabled transitions 2314 [2023-08-30 01:33:23,154 INFO L134 LiptonReduction]: Checked pairs total: 5425 [2023-08-30 01:33:23,154 INFO L136 LiptonReduction]: Total number of compositions: 130 [2023-08-30 01:33:23,175 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 01:33:23,183 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;@fe84e59, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 01:33:23,184 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-08-30 01:33:23,187 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-30 01:33:23,188 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 01:33:23,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:33:23,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 01:33:23,189 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)] === [2023-08-30 01:33:23,195 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:33:23,195 INFO L85 PathProgramCache]: Analyzing trace with hash 544, now seen corresponding path program 1 times [2023-08-30 01:33:23,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:33:23,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162189082] [2023-08-30 01:33:23,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:33:23,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:33:23,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:33:23,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:33:23,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:33:23,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162189082] [2023-08-30 01:33:23,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162189082] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:33:23,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:33:23,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 01:33:23,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442784776] [2023-08-30 01:33:23,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:33:23,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 01:33:23,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:33:23,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 01:33:23,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 01:33:23,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 273 [2023-08-30 01:33:23,321 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 92 flow. Second operand has 2 states, 2 states have (on average 133.5) internal successors, (267), 2 states have internal predecessors, (267), 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) [2023-08-30 01:33:23,321 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:33:23,321 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 273 [2023-08-30 01:33:23,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:33:23,415 INFO L130 PetriNetUnfolder]: 264/513 cut-off events. [2023-08-30 01:33:23,415 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-30 01:33:23,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 943 conditions, 513 events. 264/513 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2440 event pairs, 168 based on Foata normal form. 24/383 useless extension candidates. Maximal degree in co-relation 833. Up to 409 conditions per place. [2023-08-30 01:33:23,421 INFO L137 encePairwiseOnDemand]: 270/273 looper letters, 28 selfloop transitions, 0 changer transitions 0/37 dead transitions. [2023-08-30 01:33:23,421 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 37 transitions, 142 flow [2023-08-30 01:33:23,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 01:33:23,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 01:33:23,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 297 transitions. [2023-08-30 01:33:23,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5439560439560439 [2023-08-30 01:33:23,436 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 297 transitions. [2023-08-30 01:33:23,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 297 transitions. [2023-08-30 01:33:23,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:33:23,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 297 transitions. [2023-08-30 01:33:23,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 148.5) internal successors, (297), 2 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) [2023-08-30 01:33:23,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 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) [2023-08-30 01:33:23,447 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 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) [2023-08-30 01:33:23,448 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 92 flow. Second operand 2 states and 297 transitions. [2023-08-30 01:33:23,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 37 transitions, 142 flow [2023-08-30 01:33:23,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 37 transitions, 134 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 01:33:23,457 INFO L231 Difference]: Finished difference. Result has 37 places, 37 transitions, 78 flow [2023-08-30 01:33:23,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=78, PETRI_PLACES=37, PETRI_TRANSITIONS=37} [2023-08-30 01:33:23,461 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -5 predicate places. [2023-08-30 01:33:23,461 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 37 transitions, 78 flow [2023-08-30 01:33:23,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 133.5) internal successors, (267), 2 states have internal predecessors, (267), 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) [2023-08-30 01:33:23,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:33:23,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 01:33:23,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 01:33:23,462 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:33:23,462 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:33:23,462 INFO L85 PathProgramCache]: Analyzing trace with hash 533161, now seen corresponding path program 1 times [2023-08-30 01:33:23,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:33:23,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981043000] [2023-08-30 01:33:23,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:33:23,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:33:23,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:33:23,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:33:23,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:33:23,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981043000] [2023-08-30 01:33:23,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981043000] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:33:23,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:33:23,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 01:33:23,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801987680] [2023-08-30 01:33:23,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:33:23,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 01:33:23,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:33:23,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 01:33:23,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 01:33:23,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 273 [2023-08-30 01:33:23,626 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 37 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 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) [2023-08-30 01:33:23,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:33:23,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 273 [2023-08-30 01:33:23,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:33:23,670 INFO L130 PetriNetUnfolder]: 252/486 cut-off events. [2023-08-30 01:33:23,670 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 01:33:23,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 881 conditions, 486 events. 252/486 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2277 event pairs, 160 based on Foata normal form. 0/346 useless extension candidates. Maximal degree in co-relation 878. Up to 385 conditions per place. [2023-08-30 01:33:23,672 INFO L137 encePairwiseOnDemand]: 269/273 looper letters, 24 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2023-08-30 01:33:23,672 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 35 transitions, 126 flow [2023-08-30 01:33:23,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:33:23,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:33:23,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 400 transitions. [2023-08-30 01:33:23,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4884004884004884 [2023-08-30 01:33:23,674 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 400 transitions. [2023-08-30 01:33:23,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 400 transitions. [2023-08-30 01:33:23,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:33:23,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 400 transitions. [2023-08-30 01:33:23,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 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) [2023-08-30 01:33:23,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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) [2023-08-30 01:33:23,677 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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) [2023-08-30 01:33:23,677 INFO L175 Difference]: Start difference. First operand has 37 places, 37 transitions, 78 flow. Second operand 3 states and 400 transitions. [2023-08-30 01:33:23,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 35 transitions, 126 flow [2023-08-30 01:33:23,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 35 transitions, 126 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 01:33:23,678 INFO L231 Difference]: Finished difference. Result has 37 places, 35 transitions, 78 flow [2023-08-30 01:33:23,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=37, PETRI_TRANSITIONS=35} [2023-08-30 01:33:23,679 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -5 predicate places. [2023-08-30 01:33:23,679 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 35 transitions, 78 flow [2023-08-30 01:33:23,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 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) [2023-08-30 01:33:23,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:33:23,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 01:33:23,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 01:33:23,680 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:33:23,680 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:33:23,680 INFO L85 PathProgramCache]: Analyzing trace with hash 533162, now seen corresponding path program 1 times [2023-08-30 01:33:23,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:33:23,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488096242] [2023-08-30 01:33:23,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:33:23,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:33:23,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:33:23,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:33:23,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:33:23,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488096242] [2023-08-30 01:33:23,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488096242] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:33:23,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:33:23,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 01:33:23,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768344499] [2023-08-30 01:33:23,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:33:23,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 01:33:23,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:33:23,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 01:33:23,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 01:33:23,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 273 [2023-08-30 01:33:23,780 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 35 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 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) [2023-08-30 01:33:23,780 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:33:23,780 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 273 [2023-08-30 01:33:23,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:33:23,821 INFO L130 PetriNetUnfolder]: 240/459 cut-off events. [2023-08-30 01:33:23,821 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 01:33:23,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 835 conditions, 459 events. 240/459 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2102 event pairs, 152 based on Foata normal form. 0/334 useless extension candidates. Maximal degree in co-relation 831. Up to 363 conditions per place. [2023-08-30 01:33:23,823 INFO L137 encePairwiseOnDemand]: 269/273 looper letters, 22 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2023-08-30 01:33:23,823 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 33 transitions, 122 flow [2023-08-30 01:33:23,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:33:23,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:33:23,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 410 transitions. [2023-08-30 01:33:23,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5006105006105006 [2023-08-30 01:33:23,825 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 410 transitions. [2023-08-30 01:33:23,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 410 transitions. [2023-08-30 01:33:23,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:33:23,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 410 transitions. [2023-08-30 01:33:23,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:23,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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) [2023-08-30 01:33:23,828 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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) [2023-08-30 01:33:23,828 INFO L175 Difference]: Start difference. First operand has 37 places, 35 transitions, 78 flow. Second operand 3 states and 410 transitions. [2023-08-30 01:33:23,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 33 transitions, 122 flow [2023-08-30 01:33:23,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 33 transitions, 118 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 01:33:23,829 INFO L231 Difference]: Finished difference. Result has 35 places, 33 transitions, 74 flow [2023-08-30 01:33:23,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=35, PETRI_TRANSITIONS=33} [2023-08-30 01:33:23,829 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -7 predicate places. [2023-08-30 01:33:23,830 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 33 transitions, 74 flow [2023-08-30 01:33:23,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 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) [2023-08-30 01:33:23,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:33:23,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 01:33:23,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 01:33:23,831 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:33:23,831 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:33:23,831 INFO L85 PathProgramCache]: Analyzing trace with hash 512378966, now seen corresponding path program 1 times [2023-08-30 01:33:23,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:33:23,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176001679] [2023-08-30 01:33:23,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:33:23,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:33:23,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:33:23,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:33:23,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:33:23,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176001679] [2023-08-30 01:33:23,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176001679] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:33:23,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:33:23,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 01:33:23,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146821837] [2023-08-30 01:33:23,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:33:23,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 01:33:23,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:33:23,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 01:33:23,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 01:33:23,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 273 [2023-08-30 01:33:23,977 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 127.25) internal successors, (509), 4 states have internal predecessors, (509), 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) [2023-08-30 01:33:23,977 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:33:23,977 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 273 [2023-08-30 01:33:23,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:33:24,030 INFO L130 PetriNetUnfolder]: 180/354 cut-off events. [2023-08-30 01:33:24,030 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 01:33:24,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 645 conditions, 354 events. 180/354 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1531 event pairs, 112 based on Foata normal form. 0/270 useless extension candidates. Maximal degree in co-relation 641. Up to 278 conditions per place. [2023-08-30 01:33:24,031 INFO L137 encePairwiseOnDemand]: 270/273 looper letters, 21 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2023-08-30 01:33:24,032 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 32 transitions, 118 flow [2023-08-30 01:33:24,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:33:24,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:33:24,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 402 transitions. [2023-08-30 01:33:24,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4908424908424908 [2023-08-30 01:33:24,034 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 402 transitions. [2023-08-30 01:33:24,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 402 transitions. [2023-08-30 01:33:24,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:33:24,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 402 transitions. [2023-08-30 01:33:24,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 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) [2023-08-30 01:33:24,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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) [2023-08-30 01:33:24,037 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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) [2023-08-30 01:33:24,037 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 74 flow. Second operand 3 states and 402 transitions. [2023-08-30 01:33:24,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 32 transitions, 118 flow [2023-08-30 01:33:24,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 32 transitions, 114 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 01:33:24,038 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 72 flow [2023-08-30 01:33:24,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=34, PETRI_TRANSITIONS=32} [2023-08-30 01:33:24,039 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -8 predicate places. [2023-08-30 01:33:24,039 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 72 flow [2023-08-30 01:33:24,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 127.25) internal successors, (509), 4 states have internal predecessors, (509), 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) [2023-08-30 01:33:24,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:33:24,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 01:33:24,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 01:33:24,040 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:33:24,040 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:33:24,040 INFO L85 PathProgramCache]: Analyzing trace with hash 512378967, now seen corresponding path program 1 times [2023-08-30 01:33:24,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:33:24,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945443321] [2023-08-30 01:33:24,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:33:24,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:33:24,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:33:24,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:33:24,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:33:24,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945443321] [2023-08-30 01:33:24,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945443321] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:33:24,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:33:24,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 01:33:24,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276521038] [2023-08-30 01:33:24,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:33:24,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 01:33:24,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:33:24,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 01:33:24,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 01:33:24,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 273 [2023-08-30 01:33:24,121 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 121.25) internal successors, (485), 4 states have internal predecessors, (485), 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) [2023-08-30 01:33:24,121 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:33:24,122 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 273 [2023-08-30 01:33:24,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:33:24,154 INFO L130 PetriNetUnfolder]: 120/249 cut-off events. [2023-08-30 01:33:24,154 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 01:33:24,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 455 conditions, 249 events. 120/249 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 992 event pairs, 72 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 451. Up to 193 conditions per place. [2023-08-30 01:33:24,155 INFO L137 encePairwiseOnDemand]: 270/273 looper letters, 20 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2023-08-30 01:33:24,155 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 31 transitions, 114 flow [2023-08-30 01:33:24,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:33:24,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:33:24,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 383 transitions. [2023-08-30 01:33:24,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46764346764346765 [2023-08-30 01:33:24,157 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 383 transitions. [2023-08-30 01:33:24,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 383 transitions. [2023-08-30 01:33:24,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:33:24,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 383 transitions. [2023-08-30 01:33:24,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 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) [2023-08-30 01:33:24,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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) [2023-08-30 01:33:24,159 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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) [2023-08-30 01:33:24,159 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 72 flow. Second operand 3 states and 383 transitions. [2023-08-30 01:33:24,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 31 transitions, 114 flow [2023-08-30 01:33:24,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 31 transitions, 110 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 01:33:24,160 INFO L231 Difference]: Finished difference. Result has 33 places, 31 transitions, 70 flow [2023-08-30 01:33:24,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=33, PETRI_TRANSITIONS=31} [2023-08-30 01:33:24,161 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -9 predicate places. [2023-08-30 01:33:24,161 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 31 transitions, 70 flow [2023-08-30 01:33:24,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 121.25) internal successors, (485), 4 states have internal predecessors, (485), 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) [2023-08-30 01:33:24,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:33:24,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:33:24,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 01:33:24,162 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)] === [2023-08-30 01:33:24,163 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:33:24,163 INFO L85 PathProgramCache]: Analyzing trace with hash -261057374, now seen corresponding path program 1 times [2023-08-30 01:33:24,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:33:24,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724503621] [2023-08-30 01:33:24,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:33:24,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:33:24,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:33:24,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:33:24,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:33:24,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724503621] [2023-08-30 01:33:24,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724503621] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:33:24,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:33:24,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 01:33:24,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133831769] [2023-08-30 01:33:24,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:33:24,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 01:33:24,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:33:24,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 01:33:24,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 01:33:24,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 273 [2023-08-30 01:33:24,205 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 31 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 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) [2023-08-30 01:33:24,205 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:33:24,205 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 273 [2023-08-30 01:33:24,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:33:24,275 INFO L130 PetriNetUnfolder]: 189/435 cut-off events. [2023-08-30 01:33:24,275 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 01:33:24,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 749 conditions, 435 events. 189/435 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2003 event pairs, 72 based on Foata normal form. 0/369 useless extension candidates. Maximal degree in co-relation 745. Up to 195 conditions per place. [2023-08-30 01:33:24,277 INFO L137 encePairwiseOnDemand]: 270/273 looper letters, 33 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2023-08-30 01:33:24,277 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 44 transitions, 167 flow [2023-08-30 01:33:24,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:33:24,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:33:24,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 423 transitions. [2023-08-30 01:33:24,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5164835164835165 [2023-08-30 01:33:24,279 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 423 transitions. [2023-08-30 01:33:24,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 423 transitions. [2023-08-30 01:33:24,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:33:24,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 423 transitions. [2023-08-30 01:33:24,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 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) [2023-08-30 01:33:24,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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) [2023-08-30 01:33:24,282 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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) [2023-08-30 01:33:24,282 INFO L175 Difference]: Start difference. First operand has 33 places, 31 transitions, 70 flow. Second operand 3 states and 423 transitions. [2023-08-30 01:33:24,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 44 transitions, 167 flow [2023-08-30 01:33:24,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 44 transitions, 163 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 01:33:24,283 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 78 flow [2023-08-30 01:33:24,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=34, PETRI_TRANSITIONS=32} [2023-08-30 01:33:24,284 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -8 predicate places. [2023-08-30 01:33:24,284 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 78 flow [2023-08-30 01:33:24,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 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) [2023-08-30 01:33:24,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:33:24,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:33:24,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 01:33:24,285 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)] === [2023-08-30 01:33:24,286 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:33:24,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1965737995, now seen corresponding path program 1 times [2023-08-30 01:33:24,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:33:24,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006455675] [2023-08-30 01:33:24,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:33:24,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:33:24,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:33:24,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:33:24,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:33:24,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006455675] [2023-08-30 01:33:24,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006455675] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:33:24,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:33:24,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 01:33:24,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573901619] [2023-08-30 01:33:24,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:33:24,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 01:33:24,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:33:24,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 01:33:24,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 01:33:24,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 273 [2023-08-30 01:33:24,351 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 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) [2023-08-30 01:33:24,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:33:24,352 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 273 [2023-08-30 01:33:24,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:33:24,455 INFO L130 PetriNetUnfolder]: 297/642 cut-off events. [2023-08-30 01:33:24,455 INFO L131 PetriNetUnfolder]: For 97/97 co-relation queries the response was YES. [2023-08-30 01:33:24,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1207 conditions, 642 events. 297/642 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3077 event pairs, 117 based on Foata normal form. 0/588 useless extension candidates. Maximal degree in co-relation 1202. Up to 300 conditions per place. [2023-08-30 01:33:24,457 INFO L137 encePairwiseOnDemand]: 270/273 looper letters, 35 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2023-08-30 01:33:24,458 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 46 transitions, 191 flow [2023-08-30 01:33:24,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:33:24,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:33:24,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 423 transitions. [2023-08-30 01:33:24,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5164835164835165 [2023-08-30 01:33:24,459 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 423 transitions. [2023-08-30 01:33:24,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 423 transitions. [2023-08-30 01:33:24,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:33:24,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 423 transitions. [2023-08-30 01:33:24,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 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) [2023-08-30 01:33:24,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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) [2023-08-30 01:33:24,462 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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) [2023-08-30 01:33:24,462 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 78 flow. Second operand 3 states and 423 transitions. [2023-08-30 01:33:24,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 46 transitions, 191 flow [2023-08-30 01:33:24,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 46 transitions, 187 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 01:33:24,463 INFO L231 Difference]: Finished difference. Result has 36 places, 33 transitions, 88 flow [2023-08-30 01:33:24,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=36, PETRI_TRANSITIONS=33} [2023-08-30 01:33:24,464 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -6 predicate places. [2023-08-30 01:33:24,464 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 33 transitions, 88 flow [2023-08-30 01:33:24,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 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) [2023-08-30 01:33:24,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:33:24,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:33:24,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 01:33:24,465 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:33:24,465 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:33:24,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1443448180, now seen corresponding path program 1 times [2023-08-30 01:33:24,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:33:24,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265867873] [2023-08-30 01:33:24,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:33:24,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:33:24,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:33:24,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:33:24,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:33:24,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265867873] [2023-08-30 01:33:24,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265867873] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 01:33:24,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645945126] [2023-08-30 01:33:24,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:33:24,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 01:33:24,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 01:33:24,515 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 01:33:24,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 01:33:24,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:33:24,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 01:33:24,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:33:24,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:33:24,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 01:33:24,758 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:33:24,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645945126] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 01:33:24,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 01:33:24,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2023-08-30 01:33:24,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102551920] [2023-08-30 01:33:24,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 01:33:24,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 01:33:24,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:33:24,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 01:33:24,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-08-30 01:33:24,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 273 [2023-08-30 01:33:24,796 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 33 transitions, 88 flow. Second operand has 8 states, 8 states have (on average 128.75) internal successors, (1030), 8 states have internal predecessors, (1030), 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) [2023-08-30 01:33:24,812 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:33:24,813 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 273 [2023-08-30 01:33:24,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:33:25,074 INFO L130 PetriNetUnfolder]: 740/1644 cut-off events. [2023-08-30 01:33:25,075 INFO L131 PetriNetUnfolder]: For 327/327 co-relation queries the response was YES. [2023-08-30 01:33:25,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3116 conditions, 1644 events. 740/1644 cut-off events. For 327/327 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 9046 event pairs, 42 based on Foata normal form. 104/1693 useless extension candidates. Maximal degree in co-relation 3110. Up to 216 conditions per place. [2023-08-30 01:33:25,093 INFO L137 encePairwiseOnDemand]: 266/273 looper letters, 130 selfloop transitions, 33 changer transitions 0/172 dead transitions. [2023-08-30 01:33:25,093 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 172 transitions, 772 flow [2023-08-30 01:33:25,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 01:33:25,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 01:33:25,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2161 transitions. [2023-08-30 01:33:25,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49473443223443225 [2023-08-30 01:33:25,098 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2161 transitions. [2023-08-30 01:33:25,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2161 transitions. [2023-08-30 01:33:25,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:33:25,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2161 transitions. [2023-08-30 01:33:25,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 135.0625) internal successors, (2161), 16 states have internal predecessors, (2161), 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) [2023-08-30 01:33:25,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 273.0) internal successors, (4641), 17 states have internal predecessors, (4641), 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) [2023-08-30 01:33:25,107 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 273.0) internal successors, (4641), 17 states have internal predecessors, (4641), 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) [2023-08-30 01:33:25,107 INFO L175 Difference]: Start difference. First operand has 36 places, 33 transitions, 88 flow. Second operand 16 states and 2161 transitions. [2023-08-30 01:33:25,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 172 transitions, 772 flow [2023-08-30 01:33:25,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 172 transitions, 766 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 01:33:25,111 INFO L231 Difference]: Finished difference. Result has 63 places, 61 transitions, 360 flow [2023-08-30 01:33:25,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=360, PETRI_PLACES=63, PETRI_TRANSITIONS=61} [2023-08-30 01:33:25,113 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 21 predicate places. [2023-08-30 01:33:25,114 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 61 transitions, 360 flow [2023-08-30 01:33:25,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 128.75) internal successors, (1030), 8 states have internal predecessors, (1030), 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) [2023-08-30 01:33:25,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:33:25,114 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:33:25,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 01:33:25,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 01:33:25,321 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:33:25,321 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:33:25,321 INFO L85 PathProgramCache]: Analyzing trace with hash -870269941, now seen corresponding path program 1 times [2023-08-30 01:33:25,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:33:25,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068020507] [2023-08-30 01:33:25,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:33:25,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:33:25,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:33:25,394 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-08-30 01:33:25,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:33:25,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068020507] [2023-08-30 01:33:25,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068020507] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 01:33:25,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366936739] [2023-08-30 01:33:25,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:33:25,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 01:33:25,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 01:33:25,396 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 01:33:25,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 01:33:25,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:33:25,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 01:33:25,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:33:25,553 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-08-30 01:33:25,553 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 01:33:25,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366936739] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:33:25,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 01:33:25,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-08-30 01:33:25,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52993017] [2023-08-30 01:33:25,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:33:25,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 01:33:25,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:33:25,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 01:33:25,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 01:33:25,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 273 [2023-08-30 01:33:25,568 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 61 transitions, 360 flow. Second operand has 5 states, 5 states have (on average 128.8) internal successors, (644), 5 states have internal predecessors, (644), 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) [2023-08-30 01:33:25,568 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:33:25,568 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 273 [2023-08-30 01:33:25,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:33:26,067 INFO L130 PetriNetUnfolder]: 3568/6201 cut-off events. [2023-08-30 01:33:26,068 INFO L131 PetriNetUnfolder]: For 9535/9535 co-relation queries the response was YES. [2023-08-30 01:33:26,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16519 conditions, 6201 events. 3568/6201 cut-off events. For 9535/9535 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 35263 event pairs, 677 based on Foata normal form. 0/5685 useless extension candidates. Maximal degree in co-relation 16501. Up to 2296 conditions per place. [2023-08-30 01:33:26,096 INFO L137 encePairwiseOnDemand]: 264/273 looper letters, 172 selfloop transitions, 18 changer transitions 0/193 dead transitions. [2023-08-30 01:33:26,096 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 193 transitions, 1526 flow [2023-08-30 01:33:26,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 01:33:26,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 01:33:26,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 964 transitions. [2023-08-30 01:33:26,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5044479330193616 [2023-08-30 01:33:26,099 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 964 transitions. [2023-08-30 01:33:26,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 964 transitions. [2023-08-30 01:33:26,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:33:26,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 964 transitions. [2023-08-30 01:33:26,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 137.71428571428572) internal successors, (964), 7 states have internal predecessors, (964), 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) [2023-08-30 01:33:26,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 273.0) internal successors, (2184), 8 states have internal predecessors, (2184), 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) [2023-08-30 01:33:26,103 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 273.0) internal successors, (2184), 8 states have internal predecessors, (2184), 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) [2023-08-30 01:33:26,103 INFO L175 Difference]: Start difference. First operand has 63 places, 61 transitions, 360 flow. Second operand 7 states and 964 transitions. [2023-08-30 01:33:26,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 193 transitions, 1526 flow [2023-08-30 01:33:26,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 193 transitions, 1389 flow, removed 48 selfloop flow, removed 2 redundant places. [2023-08-30 01:33:26,139 INFO L231 Difference]: Finished difference. Result has 73 places, 79 transitions, 456 flow [2023-08-30 01:33:26,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=456, PETRI_PLACES=73, PETRI_TRANSITIONS=79} [2023-08-30 01:33:26,140 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 31 predicate places. [2023-08-30 01:33:26,140 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 79 transitions, 456 flow [2023-08-30 01:33:26,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 128.8) internal successors, (644), 5 states have internal predecessors, (644), 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) [2023-08-30 01:33:26,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:33:26,141 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:33:26,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 01:33:26,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-08-30 01:33:26,346 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)] === [2023-08-30 01:33:26,346 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:33:26,348 INFO L85 PathProgramCache]: Analyzing trace with hash 289477227, now seen corresponding path program 2 times [2023-08-30 01:33:26,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:33:26,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921259588] [2023-08-30 01:33:26,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:33:26,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:33:26,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:33:26,450 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-08-30 01:33:26,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:33:26,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921259588] [2023-08-30 01:33:26,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921259588] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:33:26,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:33:26,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 01:33:26,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528451019] [2023-08-30 01:33:26,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:33:26,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 01:33:26,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:33:26,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 01:33:26,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 01:33:26,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 273 [2023-08-30 01:33:26,467 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 79 transitions, 456 flow. Second operand has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 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) [2023-08-30 01:33:26,468 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:33:26,468 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 273 [2023-08-30 01:33:26,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:33:26,685 INFO L130 PetriNetUnfolder]: 1104/2464 cut-off events. [2023-08-30 01:33:26,685 INFO L131 PetriNetUnfolder]: For 6778/6778 co-relation queries the response was YES. [2023-08-30 01:33:26,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7926 conditions, 2464 events. 1104/2464 cut-off events. For 6778/6778 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 14594 event pairs, 229 based on Foata normal form. 280/2743 useless extension candidates. Maximal degree in co-relation 7902. Up to 1099 conditions per place. [2023-08-30 01:33:26,700 INFO L137 encePairwiseOnDemand]: 265/273 looper letters, 53 selfloop transitions, 23 changer transitions 0/89 dead transitions. [2023-08-30 01:33:26,701 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 89 transitions, 691 flow [2023-08-30 01:33:26,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:33:26,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:33:26,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 407 transitions. [2023-08-30 01:33:26,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49694749694749696 [2023-08-30 01:33:26,702 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 407 transitions. [2023-08-30 01:33:26,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 407 transitions. [2023-08-30 01:33:26,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:33:26,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 407 transitions. [2023-08-30 01:33:26,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:33:26,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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) [2023-08-30 01:33:26,719 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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) [2023-08-30 01:33:26,720 INFO L175 Difference]: Start difference. First operand has 73 places, 79 transitions, 456 flow. Second operand 3 states and 407 transitions. [2023-08-30 01:33:26,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 89 transitions, 691 flow [2023-08-30 01:33:26,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 89 transitions, 673 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-08-30 01:33:26,734 INFO L231 Difference]: Finished difference. Result has 72 places, 68 transitions, 423 flow [2023-08-30 01:33:26,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=423, PETRI_PLACES=72, PETRI_TRANSITIONS=68} [2023-08-30 01:33:26,735 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 30 predicate places. [2023-08-30 01:33:26,735 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 68 transitions, 423 flow [2023-08-30 01:33:26,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 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) [2023-08-30 01:33:26,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:33:26,735 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:33:26,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 01:33:26,736 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:33:26,736 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:33:26,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1523348383, now seen corresponding path program 3 times [2023-08-30 01:33:26,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:33:26,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413242585] [2023-08-30 01:33:26,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:33:26,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:33:26,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:33:26,773 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-08-30 01:33:26,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:33:26,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413242585] [2023-08-30 01:33:26,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413242585] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:33:26,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:33:26,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 01:33:26,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10939415] [2023-08-30 01:33:26,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:33:26,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 01:33:26,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:33:26,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 01:33:26,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 01:33:26,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 273 [2023-08-30 01:33:26,785 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 68 transitions, 423 flow. Second operand has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 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) [2023-08-30 01:33:26,785 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:33:26,785 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 273 [2023-08-30 01:33:26,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:33:26,964 INFO L130 PetriNetUnfolder]: 805/1695 cut-off events. [2023-08-30 01:33:26,964 INFO L131 PetriNetUnfolder]: For 4923/4928 co-relation queries the response was YES. [2023-08-30 01:33:26,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6106 conditions, 1695 events. 805/1695 cut-off events. For 4923/4928 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 8766 event pairs, 196 based on Foata normal form. 76/1765 useless extension candidates. Maximal degree in co-relation 6083. Up to 1131 conditions per place. [2023-08-30 01:33:26,974 INFO L137 encePairwiseOnDemand]: 268/273 looper letters, 68 selfloop transitions, 3 changer transitions 3/80 dead transitions. [2023-08-30 01:33:26,975 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 80 transitions, 635 flow [2023-08-30 01:33:26,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:33:26,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:33:26,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 420 transitions. [2023-08-30 01:33:26,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5128205128205128 [2023-08-30 01:33:26,976 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 420 transitions. [2023-08-30 01:33:26,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 420 transitions. [2023-08-30 01:33:26,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:33:26,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 420 transitions. [2023-08-30 01:33:26,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 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) [2023-08-30 01:33:26,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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) [2023-08-30 01:33:26,979 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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) [2023-08-30 01:33:26,979 INFO L175 Difference]: Start difference. First operand has 72 places, 68 transitions, 423 flow. Second operand 3 states and 420 transitions. [2023-08-30 01:33:26,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 80 transitions, 635 flow [2023-08-30 01:33:26,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 80 transitions, 609 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 01:33:26,987 INFO L231 Difference]: Finished difference. Result has 73 places, 62 transitions, 366 flow [2023-08-30 01:33:26,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=366, PETRI_PLACES=73, PETRI_TRANSITIONS=62} [2023-08-30 01:33:26,988 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 31 predicate places. [2023-08-30 01:33:26,988 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 62 transitions, 366 flow [2023-08-30 01:33:26,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 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) [2023-08-30 01:33:26,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:33:26,989 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:33:26,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 01:33:26,989 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:33:26,989 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:33:26,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1760954735, now seen corresponding path program 4 times [2023-08-30 01:33:26,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:33:26,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623893644] [2023-08-30 01:33:26,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:33:26,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:33:27,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:33:27,064 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-30 01:33:27,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:33:27,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623893644] [2023-08-30 01:33:27,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623893644] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 01:33:27,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882361330] [2023-08-30 01:33:27,065 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 01:33:27,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 01:33:27,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 01:33:27,066 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 01:33:27,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 01:33:27,165 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 01:33:27,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 01:33:27,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 01:33:27,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:33:27,241 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-30 01:33:27,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 01:33:27,290 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-30 01:33:27,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882361330] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 01:33:27,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 01:33:27,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2023-08-30 01:33:27,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946637849] [2023-08-30 01:33:27,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 01:33:27,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 01:33:27,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:33:27,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 01:33:27,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 01:33:27,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 273 [2023-08-30 01:33:27,311 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 62 transitions, 366 flow. Second operand has 7 states, 7 states have (on average 134.57142857142858) internal successors, (942), 7 states have internal predecessors, (942), 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) [2023-08-30 01:33:27,311 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:33:27,311 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 273 [2023-08-30 01:33:27,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:33:27,545 INFO L130 PetriNetUnfolder]: 847/2055 cut-off events. [2023-08-30 01:33:27,545 INFO L131 PetriNetUnfolder]: For 6015/6063 co-relation queries the response was YES. [2023-08-30 01:33:27,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6586 conditions, 2055 events. 847/2055 cut-off events. For 6015/6063 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 12044 event pairs, 128 based on Foata normal form. 138/2183 useless extension candidates. Maximal degree in co-relation 6562. Up to 338 conditions per place. [2023-08-30 01:33:27,554 INFO L137 encePairwiseOnDemand]: 269/273 looper letters, 78 selfloop transitions, 14 changer transitions 0/106 dead transitions. [2023-08-30 01:33:27,554 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 106 transitions, 837 flow [2023-08-30 01:33:27,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 01:33:27,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 01:33:27,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 834 transitions. [2023-08-30 01:33:27,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5091575091575091 [2023-08-30 01:33:27,556 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 834 transitions. [2023-08-30 01:33:27,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 834 transitions. [2023-08-30 01:33:27,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:33:27,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 834 transitions. [2023-08-30 01:33:27,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 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) [2023-08-30 01:33:27,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 273.0) internal successors, (1911), 7 states have internal predecessors, (1911), 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) [2023-08-30 01:33:27,559 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 273.0) internal successors, (1911), 7 states have internal predecessors, (1911), 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) [2023-08-30 01:33:27,559 INFO L175 Difference]: Start difference. First operand has 73 places, 62 transitions, 366 flow. Second operand 6 states and 834 transitions. [2023-08-30 01:33:27,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 106 transitions, 837 flow [2023-08-30 01:33:27,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 106 transitions, 831 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 01:33:27,567 INFO L231 Difference]: Finished difference. Result has 79 places, 64 transitions, 421 flow [2023-08-30 01:33:27,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=421, PETRI_PLACES=79, PETRI_TRANSITIONS=64} [2023-08-30 01:33:27,568 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 37 predicate places. [2023-08-30 01:33:27,568 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 64 transitions, 421 flow [2023-08-30 01:33:27,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 134.57142857142858) internal successors, (942), 7 states have internal predecessors, (942), 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) [2023-08-30 01:33:27,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:33:27,568 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:33:27,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 01:33:27,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 01:33:27,774 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:33:27,774 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:33:27,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1029704693, now seen corresponding path program 5 times [2023-08-30 01:33:27,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:33:27,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746747806] [2023-08-30 01:33:27,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:33:27,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:33:27,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:33:27,905 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 44 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-30 01:33:27,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:33:27,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746747806] [2023-08-30 01:33:27,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746747806] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 01:33:27,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584440676] [2023-08-30 01:33:27,906 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 01:33:27,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 01:33:27,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 01:33:27,922 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 01:33:27,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 01:33:28,038 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-08-30 01:33:28,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 01:33:28,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 01:33:28,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:33:28,089 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-08-30 01:33:28,089 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 01:33:28,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584440676] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:33:28,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 01:33:28,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 9 [2023-08-30 01:33:28,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013061495] [2023-08-30 01:33:28,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:33:28,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 01:33:28,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:33:28,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 01:33:28,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-08-30 01:33:28,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 273 [2023-08-30 01:33:28,111 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 64 transitions, 421 flow. Second operand has 8 states, 8 states have (on average 126.25) internal successors, (1010), 8 states have internal predecessors, (1010), 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) [2023-08-30 01:33:28,111 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:33:28,111 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 273 [2023-08-30 01:33:28,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:33:28,484 INFO L130 PetriNetUnfolder]: 1058/2129 cut-off events. [2023-08-30 01:33:28,484 INFO L131 PetriNetUnfolder]: For 8933/8933 co-relation queries the response was YES. [2023-08-30 01:33:28,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8017 conditions, 2129 events. 1058/2129 cut-off events. For 8933/8933 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 10240 event pairs, 266 based on Foata normal form. 46/2173 useless extension candidates. Maximal degree in co-relation 7991. Up to 830 conditions per place. [2023-08-30 01:33:28,498 INFO L137 encePairwiseOnDemand]: 262/273 looper letters, 104 selfloop transitions, 23 changer transitions 0/129 dead transitions. [2023-08-30 01:33:28,498 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 129 transitions, 1194 flow [2023-08-30 01:33:28,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 01:33:28,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 01:33:28,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1037 transitions. [2023-08-30 01:33:28,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4748168498168498 [2023-08-30 01:33:28,501 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1037 transitions. [2023-08-30 01:33:28,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1037 transitions. [2023-08-30 01:33:28,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:33:28,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1037 transitions. [2023-08-30 01:33:28,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 129.625) internal successors, (1037), 8 states have internal predecessors, (1037), 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) [2023-08-30 01:33:28,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 273.0) internal successors, (2457), 9 states have internal predecessors, (2457), 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) [2023-08-30 01:33:28,506 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 273.0) internal successors, (2457), 9 states have internal predecessors, (2457), 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) [2023-08-30 01:33:28,506 INFO L175 Difference]: Start difference. First operand has 79 places, 64 transitions, 421 flow. Second operand 8 states and 1037 transitions. [2023-08-30 01:33:28,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 129 transitions, 1194 flow [2023-08-30 01:33:28,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 129 transitions, 1129 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-08-30 01:33:28,521 INFO L231 Difference]: Finished difference. Result has 86 places, 66 transitions, 486 flow [2023-08-30 01:33:28,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=486, PETRI_PLACES=86, PETRI_TRANSITIONS=66} [2023-08-30 01:33:28,522 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 44 predicate places. [2023-08-30 01:33:28,522 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 66 transitions, 486 flow [2023-08-30 01:33:28,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 126.25) internal successors, (1010), 8 states have internal predecessors, (1010), 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) [2023-08-30 01:33:28,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:33:28,523 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:33:28,531 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-30 01:33:28,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 01:33:28,728 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:33:28,728 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:33:28,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1893577055, now seen corresponding path program 6 times [2023-08-30 01:33:28,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:33:28,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949192840] [2023-08-30 01:33:28,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:33:28,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:33:28,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:33:28,896 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 46 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-30 01:33:28,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:33:28,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949192840] [2023-08-30 01:33:28,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949192840] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 01:33:28,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262313202] [2023-08-30 01:33:28,897 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 01:33:28,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 01:33:28,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 01:33:28,899 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 01:33:28,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 01:33:29,015 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-08-30 01:33:29,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 01:33:29,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-30 01:33:29,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:33:29,357 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-08-30 01:33:29,358 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 01:33:29,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262313202] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:33:29,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 01:33:29,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 01:33:29,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813862374] [2023-08-30 01:33:29,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:33:29,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 01:33:29,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:33:29,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 01:33:29,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-30 01:33:29,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 273 [2023-08-30 01:33:29,409 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 66 transitions, 486 flow. Second operand has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 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) [2023-08-30 01:33:29,409 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:33:29,409 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 273 [2023-08-30 01:33:29,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:33:29,568 INFO L130 PetriNetUnfolder]: 717/1699 cut-off events. [2023-08-30 01:33:29,568 INFO L131 PetriNetUnfolder]: For 6410/6452 co-relation queries the response was YES. [2023-08-30 01:33:29,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6620 conditions, 1699 events. 717/1699 cut-off events. For 6410/6452 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 8924 event pairs, 441 based on Foata normal form. 2/1680 useless extension candidates. Maximal degree in co-relation 6591. Up to 1210 conditions per place. [2023-08-30 01:33:29,577 INFO L137 encePairwiseOnDemand]: 271/273 looper letters, 49 selfloop transitions, 1 changer transitions 0/65 dead transitions. [2023-08-30 01:33:29,577 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 65 transitions, 584 flow [2023-08-30 01:33:29,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:33:29,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:33:29,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 388 transitions. [2023-08-30 01:33:29,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47374847374847373 [2023-08-30 01:33:29,579 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 388 transitions. [2023-08-30 01:33:29,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 388 transitions. [2023-08-30 01:33:29,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:33:29,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 388 transitions. [2023-08-30 01:33:29,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 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) [2023-08-30 01:33:29,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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) [2023-08-30 01:33:29,581 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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) [2023-08-30 01:33:29,581 INFO L175 Difference]: Start difference. First operand has 86 places, 66 transitions, 486 flow. Second operand 3 states and 388 transitions. [2023-08-30 01:33:29,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 65 transitions, 584 flow [2023-08-30 01:33:29,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 65 transitions, 552 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-08-30 01:33:29,591 INFO L231 Difference]: Finished difference. Result has 81 places, 65 transitions, 454 flow [2023-08-30 01:33:29,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=454, PETRI_PLACES=81, PETRI_TRANSITIONS=65} [2023-08-30 01:33:29,592 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 39 predicate places. [2023-08-30 01:33:29,592 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 65 transitions, 454 flow [2023-08-30 01:33:29,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 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) [2023-08-30 01:33:29,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:33:29,593 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:33:29,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 01:33:29,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-30 01:33:29,801 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:33:29,801 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:33:29,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1781199716, now seen corresponding path program 2 times [2023-08-30 01:33:29,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:33:29,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563199418] [2023-08-30 01:33:29,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:33:29,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:33:29,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:33:30,189 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:33:30,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:33:30,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563199418] [2023-08-30 01:33:30,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563199418] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 01:33:30,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101621921] [2023-08-30 01:33:30,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 01:33:30,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 01:33:30,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 01:33:30,191 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 01:33:30,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 01:33:30,319 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 01:33:30,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 01:33:30,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-30 01:33:30,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:33:30,534 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 5 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:33:30,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 01:33:30,881 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:33:30,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1101621921] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 01:33:30,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 01:33:30,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 11] total 29 [2023-08-30 01:33:30,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726352461] [2023-08-30 01:33:30,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 01:33:30,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-30 01:33:30,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:33:30,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-30 01:33:30,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=797, Unknown=0, NotChecked=0, Total=930 [2023-08-30 01:33:31,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 273 [2023-08-30 01:33:31,200 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 65 transitions, 454 flow. Second operand has 31 states, 31 states have (on average 125.19354838709677) internal successors, (3881), 31 states have internal predecessors, (3881), 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) [2023-08-30 01:33:31,200 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:33:31,201 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 273 [2023-08-30 01:33:31,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:33:31,742 INFO L130 PetriNetUnfolder]: 657/1645 cut-off events. [2023-08-30 01:33:31,742 INFO L131 PetriNetUnfolder]: For 6254/6286 co-relation queries the response was YES. [2023-08-30 01:33:31,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5927 conditions, 1645 events. 657/1645 cut-off events. For 6254/6286 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 8810 event pairs, 59 based on Foata normal form. 62/1701 useless extension candidates. Maximal degree in co-relation 5898. Up to 283 conditions per place. [2023-08-30 01:33:31,748 INFO L137 encePairwiseOnDemand]: 266/273 looper letters, 0 selfloop transitions, 0 changer transitions 129/129 dead transitions. [2023-08-30 01:33:31,748 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 129 transitions, 1105 flow [2023-08-30 01:33:31,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 01:33:31,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 01:33:31,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1544 transitions. [2023-08-30 01:33:31,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4713064713064713 [2023-08-30 01:33:31,751 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1544 transitions. [2023-08-30 01:33:31,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1544 transitions. [2023-08-30 01:33:31,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:33:31,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1544 transitions. [2023-08-30 01:33:31,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 128.66666666666666) internal successors, (1544), 12 states have internal predecessors, (1544), 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) [2023-08-30 01:33:31,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 273.0) internal successors, (3549), 13 states have internal predecessors, (3549), 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) [2023-08-30 01:33:31,759 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 273.0) internal successors, (3549), 13 states have internal predecessors, (3549), 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) [2023-08-30 01:33:31,759 INFO L175 Difference]: Start difference. First operand has 81 places, 65 transitions, 454 flow. Second operand 12 states and 1544 transitions. [2023-08-30 01:33:31,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 129 transitions, 1105 flow [2023-08-30 01:33:31,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 129 transitions, 1104 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 01:33:31,769 INFO L231 Difference]: Finished difference. Result has 90 places, 0 transitions, 0 flow [2023-08-30 01:33:31,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=90, PETRI_TRANSITIONS=0} [2023-08-30 01:33:31,770 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 48 predicate places. [2023-08-30 01:33:31,770 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 0 transitions, 0 flow [2023-08-30 01:33:31,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 125.19354838709677) internal successors, (3881), 31 states have internal predecessors, (3881), 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) [2023-08-30 01:33:31,783 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 12 remaining) [2023-08-30 01:33:31,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2023-08-30 01:33:31,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2023-08-30 01:33:31,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2023-08-30 01:33:31,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2023-08-30 01:33:31,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2023-08-30 01:33:31,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2023-08-30 01:33:31,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2023-08-30 01:33:31,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (3 of 12 remaining) [2023-08-30 01:33:31,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (2 of 12 remaining) [2023-08-30 01:33:31,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2023-08-30 01:33:31,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2023-08-30 01:33:31,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 01:33:31,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-30 01:33:31,992 INFO L445 BasicCegarLoop]: Path program histogram: [6, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:33:31,995 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 01:33:31,996 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 01:33:31,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 01:33:31 BasicIcfg [2023-08-30 01:33:31,998 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 01:33:31,999 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 01:33:31,999 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 01:33:31,999 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 01:33:32,000 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 01:33:17" (3/4) ... [2023-08-30 01:33:32,002 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 01:33:32,007 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 01:33:32,008 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 01:33:32,013 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2023-08-30 01:33:32,014 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-08-30 01:33:32,014 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-30 01:33:32,014 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 01:33:32,044 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 01:33:32,044 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 01:33:32,045 INFO L158 Benchmark]: Toolchain (without parser) took 15392.44ms. Allocated memory was 69.2MB in the beginning and 411.0MB in the end (delta: 341.8MB). Free memory was 44.7MB in the beginning and 192.1MB in the end (delta: -147.4MB). Peak memory consumption was 197.3MB. Max. memory is 16.1GB. [2023-08-30 01:33:32,045 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 69.2MB. Free memory is still 46.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 01:33:32,045 INFO L158 Benchmark]: CACSL2BoogieTranslator took 408.63ms. Allocated memory was 69.2MB in the beginning and 88.1MB in the end (delta: 18.9MB). Free memory was 44.5MB in the beginning and 53.8MB in the end (delta: -9.3MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. [2023-08-30 01:33:32,046 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.31ms. Allocated memory is still 88.1MB. Free memory was 53.8MB in the beginning and 51.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 01:33:32,046 INFO L158 Benchmark]: Boogie Preprocessor took 34.71ms. Allocated memory is still 88.1MB. Free memory was 51.3MB in the beginning and 49.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 01:33:32,046 INFO L158 Benchmark]: RCFGBuilder took 384.55ms. Allocated memory is still 88.1MB. Free memory was 49.6MB in the beginning and 58.2MB in the end (delta: -8.6MB). Peak memory consumption was 16.0MB. Max. memory is 16.1GB. [2023-08-30 01:33:32,046 INFO L158 Benchmark]: TraceAbstraction took 14471.34ms. Allocated memory was 88.1MB in the beginning and 411.0MB in the end (delta: 323.0MB). Free memory was 57.4MB in the beginning and 195.3MB in the end (delta: -137.9MB). Peak memory consumption was 296.7MB. Max. memory is 16.1GB. [2023-08-30 01:33:32,046 INFO L158 Benchmark]: Witness Printer took 45.40ms. Allocated memory is still 411.0MB. Free memory was 195.2MB in the beginning and 192.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 01:33:32,050 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 69.2MB. Free memory is still 46.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 408.63ms. Allocated memory was 69.2MB in the beginning and 88.1MB in the end (delta: 18.9MB). Free memory was 44.5MB in the beginning and 53.8MB in the end (delta: -9.3MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.31ms. Allocated memory is still 88.1MB. Free memory was 53.8MB in the beginning and 51.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.71ms. Allocated memory is still 88.1MB. Free memory was 51.3MB in the beginning and 49.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 384.55ms. Allocated memory is still 88.1MB. Free memory was 49.6MB in the beginning and 58.2MB in the end (delta: -8.6MB). Peak memory consumption was 16.0MB. Max. memory is 16.1GB. * TraceAbstraction took 14471.34ms. Allocated memory was 88.1MB in the beginning and 411.0MB in the end (delta: 323.0MB). Free memory was 57.4MB in the beginning and 195.3MB in the end (delta: -137.9MB). Peak memory consumption was 296.7MB. Max. memory is 16.1GB. * Witness Printer took 45.40ms. Allocated memory is still 411.0MB. Free memory was 195.2MB in the beginning and 192.1MB 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: 5.4s, 134 PlacesBefore, 42 PlacesAfterwards, 137 TransitionsBefore, 40 TransitionsAfterwards, 2314 CoEnabledTransitionPairs, 7 FixpointIterations, 71 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 8 ConcurrentYvCompositions, 5 ChoiceCompositions, 130 TotalNumberOfCompositions, 5425 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3215, independent: 3049, independent conditional: 0, independent unconditional: 3049, dependent: 166, dependent conditional: 0, dependent unconditional: 166, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1186, independent: 1162, independent conditional: 0, independent unconditional: 1162, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3215, independent: 1887, independent conditional: 0, independent unconditional: 1887, dependent: 142, dependent conditional: 0, dependent unconditional: 142, unknown: 1186, unknown conditional: 0, unknown unconditional: 1186] , Statistics on independence cache: Total cache size (in pairs): 174, Positive cache size: 159, Positive conditional cache size: 0, Positive unconditional cache size: 159, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, 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: 919]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 906]: 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, 179 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: 14.4s, OverallIterations: 15, TraceHistogramMax: 4, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 4.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1056 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 753 mSDsluCounter, 120 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 49 mSDsCounter, 90 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3140 IncrementalHoareTripleChecker+Invalid, 3230 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 90 mSolverCounterUnsat, 71 mSDtfsCounter, 3140 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 484 GetRequests, 396 SyntacticMatches, 6 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=486occurred in iteration=13, InterpolantAutomatonStates: 78, 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: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 709 NumberOfCodeBlocks, 658 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 811 ConstructedInterpolants, 56 QuantifiedInterpolants, 4456 SizeOfPredicates, 11 NumberOfNonLiveVariables, 1816 ConjunctsInSsa, 61 ConjunctsInUnsatCore, 24 InterpolantComputations, 12 PerfectInterpolantSequences, 551/819 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! [2023-08-30 01:33:32,087 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE