./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/chl-match-trans.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/weaver/chl-match-trans.wvr.c -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 4221a6bcee4165c3049aa9b16a70613c9e290b9c0a4ff35026a6f2dcff16f9ff --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 01:37:18,582 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 01:37:18,583 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 01:37:18,619 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 01:37:18,620 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 01:37:18,622 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 01:37:18,623 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 01:37:18,625 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 01:37:18,626 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 01:37:18,630 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 01:37:18,630 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 01:37:18,632 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 01:37:18,632 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 01:37:18,634 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 01:37:18,634 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 01:37:18,638 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 01:37:18,639 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 01:37:18,640 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 01:37:18,641 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 01:37:18,644 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 01:37:18,645 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 01:37:18,652 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 01:37:18,653 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 01:37:18,653 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 01:37:18,659 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 01:37:18,659 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 01:37:18,660 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 01:37:18,661 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 01:37:18,661 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 01:37:18,662 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 01:37:18,662 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 01:37:18,663 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 01:37:18,664 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 01:37:18,665 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 01:37:18,666 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 01:37:18,666 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 01:37:18,666 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 01:37:18,666 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 01:37:18,667 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 01:37:18,667 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 01:37:18,667 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 01:37:18,669 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-09-01 01:37:18,695 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 01:37:18,695 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 01:37:18,696 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 01:37:18,696 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 01:37:18,697 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 01:37:18,697 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 01:37:18,697 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 01:37:18,698 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 01:37:18,698 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 01:37:18,698 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 01:37:18,699 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 01:37:18,699 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 01:37:18,699 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 01:37:18,699 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 01:37:18,699 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 01:37:18,699 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 01:37:18,699 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 01:37:18,700 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 01:37:18,700 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 01:37:18,700 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 01:37:18,700 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 01:37:18,700 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 01:37:18,700 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 01:37:18,700 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 01:37:18,701 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 01:37:18,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 01:37:18,701 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 01:37:18,701 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 01:37:18,701 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 01:37:18,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 01:37:18,702 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 01:37:18,702 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 01:37:18,702 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 01:37:18,702 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 01:37:18,702 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4221a6bcee4165c3049aa9b16a70613c9e290b9c0a4ff35026a6f2dcff16f9ff Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 01:37:18,901 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 01:37:18,919 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 01:37:18,920 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 01:37:18,921 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 01:37:18,921 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 01:37:18,922 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-match-trans.wvr.c [2023-09-01 01:37:19,793 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 01:37:19,944 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 01:37:19,944 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-match-trans.wvr.c [2023-09-01 01:37:19,952 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e338a2295/c1b8ff8e8fb64a5dbb16655fd348244f/FLAG5dc5cc59b [2023-09-01 01:37:19,960 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e338a2295/c1b8ff8e8fb64a5dbb16655fd348244f [2023-09-01 01:37:19,962 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 01:37:19,963 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 01:37:19,964 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 01:37:19,964 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 01:37:19,972 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 01:37:19,973 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 01:37:19" (1/1) ... [2023-09-01 01:37:19,974 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46ef18ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:37:19, skipping insertion in model container [2023-09-01 01:37:19,974 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 01:37:19" (1/1) ... [2023-09-01 01:37:19,978 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 01:37:19,998 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 01:37:20,114 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-match-trans.wvr.c[2954,2967] [2023-09-01 01:37:20,125 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 01:37:20,134 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 01:37:20,168 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-match-trans.wvr.c[2954,2967] [2023-09-01 01:37:20,171 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 01:37:20,181 INFO L208 MainTranslator]: Completed translation [2023-09-01 01:37:20,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:37:20 WrapperNode [2023-09-01 01:37:20,183 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 01:37:20,184 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 01:37:20,184 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 01:37:20,184 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 01:37:20,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:37:20" (1/1) ... [2023-09-01 01:37:20,205 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:37:20" (1/1) ... [2023-09-01 01:37:20,245 INFO L138 Inliner]: procedures = 23, calls = 33, calls flagged for inlining = 11, calls inlined = 21, statements flattened = 211 [2023-09-01 01:37:20,245 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 01:37:20,246 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 01:37:20,246 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 01:37:20,246 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 01:37:20,252 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:37:20" (1/1) ... [2023-09-01 01:37:20,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:37:20" (1/1) ... [2023-09-01 01:37:20,264 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:37:20" (1/1) ... [2023-09-01 01:37:20,265 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:37:20" (1/1) ... [2023-09-01 01:37:20,278 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:37:20" (1/1) ... [2023-09-01 01:37:20,280 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:37:20" (1/1) ... [2023-09-01 01:37:20,281 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:37:20" (1/1) ... [2023-09-01 01:37:20,282 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:37:20" (1/1) ... [2023-09-01 01:37:20,283 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 01:37:20,284 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 01:37:20,284 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 01:37:20,284 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 01:37:20,285 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:37:20" (1/1) ... [2023-09-01 01:37:20,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 01:37:20,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 01:37:20,326 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) [2023-09-01 01:37:20,346 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 [2023-09-01 01:37:20,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 01:37:20,357 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 01:37:20,357 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 01:37:20,358 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 01:37:20,358 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 01:37:20,358 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 01:37:20,359 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 01:37:20,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 01:37:20,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 01:37:20,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 01:37:20,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 01:37:20,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 01:37:20,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 01:37:20,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 01:37:20,361 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 01:37:20,504 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 01:37:20,506 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 01:37:20,785 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 01:37:20,792 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 01:37:20,792 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-09-01 01:37:20,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 01:37:20 BoogieIcfgContainer [2023-09-01 01:37:20,794 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 01:37:20,795 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 01:37:20,795 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 01:37:20,797 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 01:37:20,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 01:37:19" (1/3) ... [2023-09-01 01:37:20,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@134c8251 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 01:37:20, skipping insertion in model container [2023-09-01 01:37:20,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:37:20" (2/3) ... [2023-09-01 01:37:20,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@134c8251 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 01:37:20, skipping insertion in model container [2023-09-01 01:37:20,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 01:37:20" (3/3) ... [2023-09-01 01:37:20,799 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-match-trans.wvr.c [2023-09-01 01:37:20,811 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 01:37:20,811 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-09-01 01:37:20,811 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 01:37:20,918 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 01:37:20,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 262 places, 265 transitions, 554 flow [2023-09-01 01:37:21,063 INFO L130 PetriNetUnfolder]: 13/262 cut-off events. [2023-09-01 01:37:21,063 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 01:37:21,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 262 events. 13/262 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 383 event pairs, 0 based on Foata normal form. 0/235 useless extension candidates. Maximal degree in co-relation 180. Up to 2 conditions per place. [2023-09-01 01:37:21,072 INFO L82 GeneralOperation]: Start removeDead. Operand has 262 places, 265 transitions, 554 flow [2023-09-01 01:37:21,079 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 255 places, 258 transitions, 534 flow [2023-09-01 01:37:21,082 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 01:37:21,094 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 255 places, 258 transitions, 534 flow [2023-09-01 01:37:21,101 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 255 places, 258 transitions, 534 flow [2023-09-01 01:37:21,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 255 places, 258 transitions, 534 flow [2023-09-01 01:37:21,151 INFO L130 PetriNetUnfolder]: 13/258 cut-off events. [2023-09-01 01:37:21,155 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 01:37:21,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 271 conditions, 258 events. 13/258 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 382 event pairs, 0 based on Foata normal form. 0/232 useless extension candidates. Maximal degree in co-relation 180. Up to 2 conditions per place. [2023-09-01 01:37:21,165 INFO L119 LiptonReduction]: Number of co-enabled transitions 18330 [2023-09-01 01:37:28,365 INFO L134 LiptonReduction]: Checked pairs total: 16313 [2023-09-01 01:37:28,365 INFO L136 LiptonReduction]: Total number of compositions: 296 [2023-09-01 01:37:28,378 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 01:37:28,383 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;@3777826d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 01:37:28,383 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-09-01 01:37:28,385 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-09-01 01:37:28,385 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 01:37:28,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:37:28,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-09-01 01:37:28,387 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 01:37:28,391 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:37:28,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1058, now seen corresponding path program 1 times [2023-09-01 01:37:28,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:37:28,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425798118] [2023-09-01 01:37:28,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:37:28,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:37:28,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:37:28,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:37:28,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:37:28,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425798118] [2023-09-01 01:37:28,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425798118] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:37:28,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:37:28,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-09-01 01:37:28,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046686890] [2023-09-01 01:37:28,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:37:28,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-09-01 01:37:28,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:37:28,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-09-01 01:37:28,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-09-01 01:37:28,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 561 [2023-09-01 01:37:28,545 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 29 transitions, 76 flow. Second operand has 2 states, 2 states have (on average 245.5) internal successors, (491), 2 states have internal predecessors, (491), 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) [2023-09-01 01:37:28,545 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:37:28,545 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 561 [2023-09-01 01:37:28,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:37:28,606 INFO L130 PetriNetUnfolder]: 81/164 cut-off events. [2023-09-01 01:37:28,607 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 01:37:28,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354 conditions, 164 events. 81/164 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 467 event pairs, 81 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 244. Up to 165 conditions per place. [2023-09-01 01:37:28,609 INFO L137 encePairwiseOnDemand]: 558/561 looper letters, 26 selfloop transitions, 0 changer transitions 0/26 dead transitions. [2023-09-01 01:37:28,609 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 26 transitions, 122 flow [2023-09-01 01:37:28,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-09-01 01:37:28,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-09-01 01:37:28,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 519 transitions. [2023-09-01 01:37:28,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4625668449197861 [2023-09-01 01:37:28,625 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 519 transitions. [2023-09-01 01:37:28,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 519 transitions. [2023-09-01 01:37:28,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:37:28,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 519 transitions. [2023-09-01 01:37:28,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 259.5) internal successors, (519), 2 states have internal predecessors, (519), 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) [2023-09-01 01:37:28,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 561.0) internal successors, (1683), 3 states have internal predecessors, (1683), 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) [2023-09-01 01:37:28,637 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 561.0) internal successors, (1683), 3 states have internal predecessors, (1683), 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) [2023-09-01 01:37:28,638 INFO L175 Difference]: Start difference. First operand has 39 places, 29 transitions, 76 flow. Second operand 2 states and 519 transitions. [2023-09-01 01:37:28,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 26 transitions, 122 flow [2023-09-01 01:37:28,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 26 transitions, 110 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-09-01 01:37:28,643 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 58 flow [2023-09-01 01:37:28,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=561, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=58, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2023-09-01 01:37:28,647 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -8 predicate places. [2023-09-01 01:37:28,647 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 58 flow [2023-09-01 01:37:28,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 245.5) internal successors, (491), 2 states have internal predecessors, (491), 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) [2023-09-01 01:37:28,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:37:28,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 01:37:28,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 01:37:28,648 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 01:37:28,649 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:37:28,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1041147, now seen corresponding path program 1 times [2023-09-01 01:37:28,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:37:28,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316810554] [2023-09-01 01:37:28,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:37:28,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:37:28,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:37:28,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:37:28,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:37:28,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316810554] [2023-09-01 01:37:28,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316810554] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:37:28,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:37:28,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 01:37:28,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234136796] [2023-09-01 01:37:28,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:37:28,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 01:37:28,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:37:28,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 01:37:28,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 01:37:28,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 561 [2023-09-01 01:37:28,870 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 236.0) internal successors, (708), 3 states have internal predecessors, (708), 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) [2023-09-01 01:37:28,870 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:37:28,871 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 561 [2023-09-01 01:37:28,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:37:28,912 INFO L130 PetriNetUnfolder]: 76/153 cut-off events. [2023-09-01 01:37:28,912 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 01:37:28,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 153 events. 76/153 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 428 event pairs, 76 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 313. Up to 153 conditions per place. [2023-09-01 01:37:28,913 INFO L137 encePairwiseOnDemand]: 558/561 looper letters, 23 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2023-09-01 01:37:28,913 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 24 transitions, 102 flow [2023-09-01 01:37:28,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 01:37:28,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 01:37:28,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 731 transitions. [2023-09-01 01:37:28,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2023-09-01 01:37:28,915 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 731 transitions. [2023-09-01 01:37:28,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 731 transitions. [2023-09-01 01:37:28,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:37:28,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 731 transitions. [2023-09-01 01:37:28,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 243.66666666666666) internal successors, (731), 3 states have internal predecessors, (731), 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) [2023-09-01 01:37:28,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 561.0) internal successors, (2244), 4 states have internal predecessors, (2244), 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) [2023-09-01 01:37:28,920 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 561.0) internal successors, (2244), 4 states have internal predecessors, (2244), 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) [2023-09-01 01:37:28,920 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 58 flow. Second operand 3 states and 731 transitions. [2023-09-01 01:37:28,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 24 transitions, 102 flow [2023-09-01 01:37:28,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 24 transitions, 102 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 01:37:28,921 INFO L231 Difference]: Finished difference. Result has 31 places, 24 transitions, 56 flow [2023-09-01 01:37:28,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=561, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=31, PETRI_TRANSITIONS=24} [2023-09-01 01:37:28,922 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -8 predicate places. [2023-09-01 01:37:28,922 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 24 transitions, 56 flow [2023-09-01 01:37:28,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 236.0) internal successors, (708), 3 states have internal predecessors, (708), 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) [2023-09-01 01:37:28,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:37:28,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 01:37:28,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 01:37:28,923 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 01:37:28,923 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:37:28,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1041146, now seen corresponding path program 1 times [2023-09-01 01:37:28,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:37:28,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903581472] [2023-09-01 01:37:28,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:37:28,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:37:28,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:37:29,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:37:29,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:37:29,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903581472] [2023-09-01 01:37:29,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903581472] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:37:29,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:37:29,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 01:37:29,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136027456] [2023-09-01 01:37:29,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:37:29,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 01:37:29,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:37:29,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 01:37:29,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 01:37:29,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 561 [2023-09-01 01:37:29,106 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 241.0) internal successors, (723), 3 states have internal predecessors, (723), 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) [2023-09-01 01:37:29,106 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:37:29,106 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 561 [2023-09-01 01:37:29,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:37:29,140 INFO L130 PetriNetUnfolder]: 71/142 cut-off events. [2023-09-01 01:37:29,140 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 01:37:29,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296 conditions, 142 events. 71/142 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 385 event pairs, 71 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 292. Up to 142 conditions per place. [2023-09-01 01:37:29,141 INFO L137 encePairwiseOnDemand]: 558/561 looper letters, 21 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2023-09-01 01:37:29,141 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 22 transitions, 96 flow [2023-09-01 01:37:29,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 01:37:29,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 01:37:29,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 744 transitions. [2023-09-01 01:37:29,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44206773618538325 [2023-09-01 01:37:29,143 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 744 transitions. [2023-09-01 01:37:29,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 744 transitions. [2023-09-01 01:37:29,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:37:29,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 744 transitions. [2023-09-01 01:37:29,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 248.0) internal successors, (744), 3 states have internal predecessors, (744), 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) [2023-09-01 01:37:29,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 561.0) internal successors, (2244), 4 states have internal predecessors, (2244), 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) [2023-09-01 01:37:29,148 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 561.0) internal successors, (2244), 4 states have internal predecessors, (2244), 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) [2023-09-01 01:37:29,148 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 56 flow. Second operand 3 states and 744 transitions. [2023-09-01 01:37:29,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 22 transitions, 96 flow [2023-09-01 01:37:29,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 22 transitions, 95 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 01:37:29,149 INFO L231 Difference]: Finished difference. Result has 30 places, 22 transitions, 53 flow [2023-09-01 01:37:29,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=561, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=30, PETRI_TRANSITIONS=22} [2023-09-01 01:37:29,149 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -9 predicate places. [2023-09-01 01:37:29,150 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 53 flow [2023-09-01 01:37:29,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 241.0) internal successors, (723), 3 states have internal predecessors, (723), 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) [2023-09-01 01:37:29,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:37:29,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 01:37:29,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 01:37:29,151 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 01:37:29,151 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:37:29,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1000563933, now seen corresponding path program 1 times [2023-09-01 01:37:29,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:37:29,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456317604] [2023-09-01 01:37:29,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:37:29,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:37:29,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:37:29,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:37:29,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:37:29,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456317604] [2023-09-01 01:37:29,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456317604] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:37:29,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:37:29,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 01:37:29,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611075937] [2023-09-01 01:37:29,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:37:29,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 01:37:29,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:37:29,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 01:37:29,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 01:37:29,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 561 [2023-09-01 01:37:29,217 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 53 flow. Second operand has 3 states, 3 states have (on average 241.66666666666666) internal successors, (725), 3 states have internal predecessors, (725), 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) [2023-09-01 01:37:29,218 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:37:29,218 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 561 [2023-09-01 01:37:29,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:37:29,264 INFO L130 PetriNetUnfolder]: 66/131 cut-off events. [2023-09-01 01:37:29,264 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 01:37:29,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 131 events. 66/131 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 346 event pairs, 66 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 271. Up to 131 conditions per place. [2023-09-01 01:37:29,265 INFO L137 encePairwiseOnDemand]: 558/561 looper letters, 19 selfloop transitions, 1 changer transitions 0/20 dead transitions. [2023-09-01 01:37:29,265 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 20 transitions, 89 flow [2023-09-01 01:37:29,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 01:37:29,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 01:37:29,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 742 transitions. [2023-09-01 01:37:29,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44087938205585264 [2023-09-01 01:37:29,267 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 742 transitions. [2023-09-01 01:37:29,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 742 transitions. [2023-09-01 01:37:29,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:37:29,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 742 transitions. [2023-09-01 01:37:29,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 247.33333333333334) internal successors, (742), 3 states have internal predecessors, (742), 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) [2023-09-01 01:37:29,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 561.0) internal successors, (2244), 4 states have internal predecessors, (2244), 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) [2023-09-01 01:37:29,271 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 561.0) internal successors, (2244), 4 states have internal predecessors, (2244), 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) [2023-09-01 01:37:29,271 INFO L175 Difference]: Start difference. First operand has 30 places, 22 transitions, 53 flow. Second operand 3 states and 742 transitions. [2023-09-01 01:37:29,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 20 transitions, 89 flow [2023-09-01 01:37:29,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 20 transitions, 88 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 01:37:29,272 INFO L231 Difference]: Finished difference. Result has 29 places, 20 transitions, 50 flow [2023-09-01 01:37:29,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=561, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=29, PETRI_TRANSITIONS=20} [2023-09-01 01:37:29,273 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -10 predicate places. [2023-09-01 01:37:29,273 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 20 transitions, 50 flow [2023-09-01 01:37:29,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 241.66666666666666) internal successors, (725), 3 states have internal predecessors, (725), 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) [2023-09-01 01:37:29,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:37:29,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 01:37:29,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 01:37:29,274 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 01:37:29,274 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:37:29,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1000563931, now seen corresponding path program 1 times [2023-09-01 01:37:29,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:37:29,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750087466] [2023-09-01 01:37:29,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:37:29,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:37:29,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:37:29,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:37:29,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:37:29,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750087466] [2023-09-01 01:37:29,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750087466] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:37:29,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:37:29,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 01:37:29,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520848262] [2023-09-01 01:37:29,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:37:29,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 01:37:29,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:37:29,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 01:37:29,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 01:37:29,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 561 [2023-09-01 01:37:29,348 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 20 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 236.66666666666666) internal successors, (710), 3 states have internal predecessors, (710), 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) [2023-09-01 01:37:29,349 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:37:29,349 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 561 [2023-09-01 01:37:29,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:37:29,375 INFO L130 PetriNetUnfolder]: 61/120 cut-off events. [2023-09-01 01:37:29,375 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 01:37:29,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 120 events. 61/120 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 300 event pairs, 61 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 250. Up to 120 conditions per place. [2023-09-01 01:37:29,376 INFO L137 encePairwiseOnDemand]: 558/561 looper letters, 17 selfloop transitions, 1 changer transitions 0/18 dead transitions. [2023-09-01 01:37:29,376 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 18 transitions, 82 flow [2023-09-01 01:37:29,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 01:37:29,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 01:37:29,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 725 transitions. [2023-09-01 01:37:29,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43077837195484253 [2023-09-01 01:37:29,378 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 725 transitions. [2023-09-01 01:37:29,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 725 transitions. [2023-09-01 01:37:29,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:37:29,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 725 transitions. [2023-09-01 01:37:29,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 241.66666666666666) internal successors, (725), 3 states have internal predecessors, (725), 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) [2023-09-01 01:37:29,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 561.0) internal successors, (2244), 4 states have internal predecessors, (2244), 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) [2023-09-01 01:37:29,383 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 561.0) internal successors, (2244), 4 states have internal predecessors, (2244), 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) [2023-09-01 01:37:29,383 INFO L175 Difference]: Start difference. First operand has 29 places, 20 transitions, 50 flow. Second operand 3 states and 725 transitions. [2023-09-01 01:37:29,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 18 transitions, 82 flow [2023-09-01 01:37:29,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 18 transitions, 81 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 01:37:29,384 INFO L231 Difference]: Finished difference. Result has 28 places, 18 transitions, 47 flow [2023-09-01 01:37:29,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=561, PETRI_DIFFERENCE_MINUEND_FLOW=45, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=47, PETRI_PLACES=28, PETRI_TRANSITIONS=18} [2023-09-01 01:37:29,385 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -11 predicate places. [2023-09-01 01:37:29,385 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 18 transitions, 47 flow [2023-09-01 01:37:29,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 236.66666666666666) internal successors, (710), 3 states have internal predecessors, (710), 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) [2023-09-01 01:37:29,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:37:29,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:37:29,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 01:37:29,386 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 01:37:29,386 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:37:29,386 INFO L85 PathProgramCache]: Analyzing trace with hash -530712191, now seen corresponding path program 1 times [2023-09-01 01:37:29,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:37:29,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557610884] [2023-09-01 01:37:29,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:37:29,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:37:29,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:37:29,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:37:29,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:37:29,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557610884] [2023-09-01 01:37:29,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557610884] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:37:29,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:37:29,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 01:37:29,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113951974] [2023-09-01 01:37:29,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:37:29,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 01:37:29,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:37:29,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 01:37:29,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-09-01 01:37:29,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 561 [2023-09-01 01:37:29,501 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 18 transitions, 47 flow. Second operand has 5 states, 5 states have (on average 228.4) internal successors, (1142), 5 states have internal predecessors, (1142), 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) [2023-09-01 01:37:29,501 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:37:29,501 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 561 [2023-09-01 01:37:29,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:37:29,527 INFO L130 PetriNetUnfolder]: 49/100 cut-off events. [2023-09-01 01:37:29,528 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 01:37:29,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 100 events. 49/100 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 223 event pairs, 49 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 211. Up to 100 conditions per place. [2023-09-01 01:37:29,528 INFO L137 encePairwiseOnDemand]: 559/561 looper letters, 16 selfloop transitions, 1 changer transitions 0/17 dead transitions. [2023-09-01 01:37:29,529 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 17 transitions, 79 flow [2023-09-01 01:37:29,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 01:37:29,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 01:37:29,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 699 transitions. [2023-09-01 01:37:29,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41532976827094475 [2023-09-01 01:37:29,530 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 699 transitions. [2023-09-01 01:37:29,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 699 transitions. [2023-09-01 01:37:29,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:37:29,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 699 transitions. [2023-09-01 01:37:29,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 233.0) internal successors, (699), 3 states have internal predecessors, (699), 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) [2023-09-01 01:37:29,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 561.0) internal successors, (2244), 4 states have internal predecessors, (2244), 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) [2023-09-01 01:37:29,535 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 561.0) internal successors, (2244), 4 states have internal predecessors, (2244), 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) [2023-09-01 01:37:29,535 INFO L175 Difference]: Start difference. First operand has 28 places, 18 transitions, 47 flow. Second operand 3 states and 699 transitions. [2023-09-01 01:37:29,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 17 transitions, 79 flow [2023-09-01 01:37:29,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 17 transitions, 78 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 01:37:29,536 INFO L231 Difference]: Finished difference. Result has 28 places, 17 transitions, 46 flow [2023-09-01 01:37:29,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=561, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=28, PETRI_TRANSITIONS=17} [2023-09-01 01:37:29,537 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -11 predicate places. [2023-09-01 01:37:29,537 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 17 transitions, 46 flow [2023-09-01 01:37:29,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 228.4) internal successors, (1142), 5 states have internal predecessors, (1142), 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) [2023-09-01 01:37:29,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:37:29,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:37:29,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 01:37:29,538 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 01:37:29,538 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:37:29,538 INFO L85 PathProgramCache]: Analyzing trace with hash -530712190, now seen corresponding path program 1 times [2023-09-01 01:37:29,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:37:29,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483737655] [2023-09-01 01:37:29,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:37:29,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:37:29,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:37:29,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:37:29,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:37:29,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483737655] [2023-09-01 01:37:29,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483737655] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:37:29,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:37:29,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 01:37:29,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325604285] [2023-09-01 01:37:29,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:37:29,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 01:37:29,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:37:29,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 01:37:29,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 01:37:29,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 561 [2023-09-01 01:37:29,601 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 17 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 238.33333333333334) internal successors, (715), 3 states have internal predecessors, (715), 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) [2023-09-01 01:37:29,601 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:37:29,602 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 561 [2023-09-01 01:37:29,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:37:29,623 INFO L130 PetriNetUnfolder]: 37/80 cut-off events. [2023-09-01 01:37:29,624 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 01:37:29,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 80 events. 37/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 151 event pairs, 37 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 172. Up to 80 conditions per place. [2023-09-01 01:37:29,624 INFO L137 encePairwiseOnDemand]: 559/561 looper letters, 15 selfloop transitions, 1 changer transitions 0/16 dead transitions. [2023-09-01 01:37:29,624 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 16 transitions, 76 flow [2023-09-01 01:37:29,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 01:37:29,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 01:37:29,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 725 transitions. [2023-09-01 01:37:29,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43077837195484253 [2023-09-01 01:37:29,627 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 725 transitions. [2023-09-01 01:37:29,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 725 transitions. [2023-09-01 01:37:29,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:37:29,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 725 transitions. [2023-09-01 01:37:29,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 241.66666666666666) internal successors, (725), 3 states have internal predecessors, (725), 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) [2023-09-01 01:37:29,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 561.0) internal successors, (2244), 4 states have internal predecessors, (2244), 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) [2023-09-01 01:37:29,631 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 561.0) internal successors, (2244), 4 states have internal predecessors, (2244), 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) [2023-09-01 01:37:29,631 INFO L175 Difference]: Start difference. First operand has 28 places, 17 transitions, 46 flow. Second operand 3 states and 725 transitions. [2023-09-01 01:37:29,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 16 transitions, 76 flow [2023-09-01 01:37:29,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 16 transitions, 75 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 01:37:29,632 INFO L231 Difference]: Finished difference. Result has 28 places, 16 transitions, 45 flow [2023-09-01 01:37:29,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=561, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=45, PETRI_PLACES=28, PETRI_TRANSITIONS=16} [2023-09-01 01:37:29,632 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -11 predicate places. [2023-09-01 01:37:29,632 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 16 transitions, 45 flow [2023-09-01 01:37:29,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 238.33333333333334) internal successors, (715), 3 states have internal predecessors, (715), 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) [2023-09-01 01:37:29,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:37:29,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:37:29,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 01:37:29,633 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 01:37:29,634 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:37:29,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1651026530, now seen corresponding path program 1 times [2023-09-01 01:37:29,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:37:29,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059678353] [2023-09-01 01:37:29,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:37:29,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:37:29,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:37:30,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:37:30,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:37:30,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059678353] [2023-09-01 01:37:30,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059678353] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:37:30,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:37:30,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 01:37:30,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040183943] [2023-09-01 01:37:30,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:37:30,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 01:37:30,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:37:30,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 01:37:30,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 01:37:30,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 561 [2023-09-01 01:37:30,135 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 16 transitions, 45 flow. Second operand has 5 states, 5 states have (on average 224.2) internal successors, (1121), 5 states have internal predecessors, (1121), 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) [2023-09-01 01:37:30,135 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:37:30,135 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 561 [2023-09-01 01:37:30,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:37:30,236 INFO L130 PetriNetUnfolder]: 41/109 cut-off events. [2023-09-01 01:37:30,238 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 01:37:30,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 109 events. 41/109 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 363 event pairs, 3 based on Foata normal form. 1/110 useless extension candidates. Maximal degree in co-relation 232. Up to 50 conditions per place. [2023-09-01 01:37:30,239 INFO L137 encePairwiseOnDemand]: 556/561 looper letters, 28 selfloop transitions, 6 changer transitions 5/39 dead transitions. [2023-09-01 01:37:30,239 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 39 transitions, 178 flow [2023-09-01 01:37:30,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 01:37:30,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 01:37:30,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1145 transitions. [2023-09-01 01:37:30,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40819964349376114 [2023-09-01 01:37:30,242 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1145 transitions. [2023-09-01 01:37:30,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1145 transitions. [2023-09-01 01:37:30,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:37:30,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1145 transitions. [2023-09-01 01:37:30,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 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) [2023-09-01 01:37:30,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 561.0) internal successors, (3366), 6 states have internal predecessors, (3366), 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) [2023-09-01 01:37:30,248 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 561.0) internal successors, (3366), 6 states have internal predecessors, (3366), 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) [2023-09-01 01:37:30,248 INFO L175 Difference]: Start difference. First operand has 28 places, 16 transitions, 45 flow. Second operand 5 states and 1145 transitions. [2023-09-01 01:37:30,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 39 transitions, 178 flow [2023-09-01 01:37:30,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 39 transitions, 177 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 01:37:30,249 INFO L231 Difference]: Finished difference. Result has 33 places, 19 transitions, 74 flow [2023-09-01 01:37:30,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=561, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=74, PETRI_PLACES=33, PETRI_TRANSITIONS=19} [2023-09-01 01:37:30,251 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -6 predicate places. [2023-09-01 01:37:30,252 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 19 transitions, 74 flow [2023-09-01 01:37:30,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 224.2) internal successors, (1121), 5 states have internal predecessors, (1121), 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) [2023-09-01 01:37:30,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:37:30,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:37:30,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 01:37:30,253 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 01:37:30,253 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:37:30,253 INFO L85 PathProgramCache]: Analyzing trace with hash -865919996, now seen corresponding path program 2 times [2023-09-01 01:37:30,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:37:30,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828780506] [2023-09-01 01:37:30,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:37:30,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:37:30,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:37:30,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:37:30,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:37:30,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828780506] [2023-09-01 01:37:30,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828780506] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:37:30,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:37:30,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 01:37:30,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234808511] [2023-09-01 01:37:30,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:37:30,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 01:37:30,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:37:30,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 01:37:30,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 01:37:30,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 561 [2023-09-01 01:37:30,834 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 19 transitions, 74 flow. Second operand has 5 states, 5 states have (on average 224.2) internal successors, (1121), 5 states have internal predecessors, (1121), 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) [2023-09-01 01:37:30,834 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:37:30,834 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 561 [2023-09-01 01:37:30,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:37:30,952 INFO L130 PetriNetUnfolder]: 39/122 cut-off events. [2023-09-01 01:37:30,952 INFO L131 PetriNetUnfolder]: For 63/63 co-relation queries the response was YES. [2023-09-01 01:37:30,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 350 conditions, 122 events. 39/122 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 446 event pairs, 2 based on Foata normal form. 1/123 useless extension candidates. Maximal degree in co-relation 344. Up to 54 conditions per place. [2023-09-01 01:37:30,952 INFO L137 encePairwiseOnDemand]: 556/561 looper letters, 32 selfloop transitions, 7 changer transitions 8/47 dead transitions. [2023-09-01 01:37:30,952 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 47 transitions, 250 flow [2023-09-01 01:37:30,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 01:37:30,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 01:37:30,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1372 transitions. [2023-09-01 01:37:30,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40760546642899587 [2023-09-01 01:37:30,959 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1372 transitions. [2023-09-01 01:37:30,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1372 transitions. [2023-09-01 01:37:30,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:37:30,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1372 transitions. [2023-09-01 01:37:30,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 228.66666666666666) internal successors, (1372), 6 states have internal predecessors, (1372), 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) [2023-09-01 01:37:30,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 561.0) internal successors, (3927), 7 states have internal predecessors, (3927), 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) [2023-09-01 01:37:30,965 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 561.0) internal successors, (3927), 7 states have internal predecessors, (3927), 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) [2023-09-01 01:37:30,965 INFO L175 Difference]: Start difference. First operand has 33 places, 19 transitions, 74 flow. Second operand 6 states and 1372 transitions. [2023-09-01 01:37:30,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 47 transitions, 250 flow [2023-09-01 01:37:30,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 47 transitions, 249 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 01:37:30,967 INFO L231 Difference]: Finished difference. Result has 40 places, 22 transitions, 113 flow [2023-09-01 01:37:30,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=561, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=113, PETRI_PLACES=40, PETRI_TRANSITIONS=22} [2023-09-01 01:37:30,967 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 1 predicate places. [2023-09-01 01:37:30,968 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 22 transitions, 113 flow [2023-09-01 01:37:30,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 224.2) internal successors, (1121), 5 states have internal predecessors, (1121), 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) [2023-09-01 01:37:30,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:37:30,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:37:30,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 01:37:30,969 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 01:37:30,969 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:37:30,969 INFO L85 PathProgramCache]: Analyzing trace with hash 859923214, now seen corresponding path program 3 times [2023-09-01 01:37:30,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:37:30,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920413513] [2023-09-01 01:37:30,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:37:30,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:37:30,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:37:31,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:37:31,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:37:31,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920413513] [2023-09-01 01:37:31,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920413513] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:37:31,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:37:31,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 01:37:31,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314547851] [2023-09-01 01:37:31,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:37:31,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 01:37:31,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:37:31,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 01:37:31,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 01:37:31,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 561 [2023-09-01 01:37:31,423 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 22 transitions, 113 flow. Second operand has 5 states, 5 states have (on average 224.2) internal successors, (1121), 5 states have internal predecessors, (1121), 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) [2023-09-01 01:37:31,423 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:37:31,423 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 561 [2023-09-01 01:37:31,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:37:31,521 INFO L130 PetriNetUnfolder]: 34/112 cut-off events. [2023-09-01 01:37:31,521 INFO L131 PetriNetUnfolder]: For 137/137 co-relation queries the response was YES. [2023-09-01 01:37:31,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 375 conditions, 112 events. 34/112 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 397 event pairs, 9 based on Foata normal form. 1/113 useless extension candidates. Maximal degree in co-relation 366. Up to 62 conditions per place. [2023-09-01 01:37:31,521 INFO L137 encePairwiseOnDemand]: 556/561 looper letters, 24 selfloop transitions, 6 changer transitions 10/40 dead transitions. [2023-09-01 01:37:31,521 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 40 transitions, 246 flow [2023-09-01 01:37:31,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 01:37:31,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 01:37:31,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1143 transitions. [2023-09-01 01:37:31,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40748663101604277 [2023-09-01 01:37:31,524 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1143 transitions. [2023-09-01 01:37:31,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1143 transitions. [2023-09-01 01:37:31,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:37:31,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1143 transitions. [2023-09-01 01:37:31,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 228.6) internal successors, (1143), 5 states have internal predecessors, (1143), 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) [2023-09-01 01:37:31,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 561.0) internal successors, (3366), 6 states have internal predecessors, (3366), 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) [2023-09-01 01:37:31,530 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 561.0) internal successors, (3366), 6 states have internal predecessors, (3366), 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) [2023-09-01 01:37:31,530 INFO L175 Difference]: Start difference. First operand has 40 places, 22 transitions, 113 flow. Second operand 5 states and 1143 transitions. [2023-09-01 01:37:31,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 40 transitions, 246 flow [2023-09-01 01:37:31,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 40 transitions, 226 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-09-01 01:37:31,531 INFO L231 Difference]: Finished difference. Result has 42 places, 20 transitions, 110 flow [2023-09-01 01:37:31,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=561, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=110, PETRI_PLACES=42, PETRI_TRANSITIONS=20} [2023-09-01 01:37:31,532 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 3 predicate places. [2023-09-01 01:37:31,532 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 20 transitions, 110 flow [2023-09-01 01:37:31,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 224.2) internal successors, (1121), 5 states have internal predecessors, (1121), 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) [2023-09-01 01:37:31,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:37:31,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:37:31,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 01:37:31,533 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 01:37:31,534 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:37:31,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1788560854, now seen corresponding path program 4 times [2023-09-01 01:37:31,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:37:31,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813878167] [2023-09-01 01:37:31,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:37:31,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:37:31,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:37:31,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:37:31,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:37:31,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813878167] [2023-09-01 01:37:31,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813878167] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:37:31,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:37:31,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 01:37:31,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498481391] [2023-09-01 01:37:31,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:37:31,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 01:37:31,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:37:31,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 01:37:31,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 01:37:31,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 561 [2023-09-01 01:37:31,875 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 20 transitions, 110 flow. Second operand has 5 states, 5 states have (on average 224.2) internal successors, (1121), 5 states have internal predecessors, (1121), 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) [2023-09-01 01:37:31,875 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:37:31,875 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 561 [2023-09-01 01:37:31,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:37:31,993 INFO L130 PetriNetUnfolder]: 18/68 cut-off events. [2023-09-01 01:37:31,993 INFO L131 PetriNetUnfolder]: For 117/117 co-relation queries the response was YES. [2023-09-01 01:37:31,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 251 conditions, 68 events. 18/68 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 176 event pairs, 1 based on Foata normal form. 1/69 useless extension candidates. Maximal degree in co-relation 242. Up to 21 conditions per place. [2023-09-01 01:37:31,994 INFO L137 encePairwiseOnDemand]: 556/561 looper letters, 24 selfloop transitions, 5 changer transitions 12/41 dead transitions. [2023-09-01 01:37:31,994 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 41 transitions, 245 flow [2023-09-01 01:37:31,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 01:37:31,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 01:37:31,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1367 transitions. [2023-09-01 01:37:31,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4061200237670826 [2023-09-01 01:37:31,997 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1367 transitions. [2023-09-01 01:37:31,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1367 transitions. [2023-09-01 01:37:31,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:37:31,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1367 transitions. [2023-09-01 01:37:32,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 227.83333333333334) internal successors, (1367), 6 states have internal predecessors, (1367), 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) [2023-09-01 01:37:32,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 561.0) internal successors, (3927), 7 states have internal predecessors, (3927), 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) [2023-09-01 01:37:32,003 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 561.0) internal successors, (3927), 7 states have internal predecessors, (3927), 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) [2023-09-01 01:37:32,004 INFO L175 Difference]: Start difference. First operand has 42 places, 20 transitions, 110 flow. Second operand 6 states and 1367 transitions. [2023-09-01 01:37:32,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 41 transitions, 245 flow [2023-09-01 01:37:32,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 41 transitions, 231 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-09-01 01:37:32,005 INFO L231 Difference]: Finished difference. Result has 45 places, 18 transitions, 94 flow [2023-09-01 01:37:32,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=561, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=94, PETRI_PLACES=45, PETRI_TRANSITIONS=18} [2023-09-01 01:37:32,006 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 6 predicate places. [2023-09-01 01:37:32,006 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 18 transitions, 94 flow [2023-09-01 01:37:32,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 224.2) internal successors, (1121), 5 states have internal predecessors, (1121), 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) [2023-09-01 01:37:32,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:37:32,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:37:32,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 01:37:32,007 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 01:37:32,007 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:37:32,007 INFO L85 PathProgramCache]: Analyzing trace with hash -633887036, now seen corresponding path program 5 times [2023-09-01 01:37:32,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:37:32,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864304634] [2023-09-01 01:37:32,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:37:32,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:37:32,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:37:32,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:37:32,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:37:32,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864304634] [2023-09-01 01:37:32,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864304634] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:37:32,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:37:32,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 01:37:32,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724589575] [2023-09-01 01:37:32,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:37:32,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 01:37:32,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:37:32,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 01:37:32,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 01:37:32,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 561 [2023-09-01 01:37:32,372 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 18 transitions, 94 flow. Second operand has 5 states, 5 states have (on average 224.2) internal successors, (1121), 5 states have internal predecessors, (1121), 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) [2023-09-01 01:37:32,373 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:37:32,373 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 561 [2023-09-01 01:37:32,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:37:32,472 INFO L130 PetriNetUnfolder]: 7/37 cut-off events. [2023-09-01 01:37:32,472 INFO L131 PetriNetUnfolder]: For 64/64 co-relation queries the response was YES. [2023-09-01 01:37:32,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 37 events. 7/37 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 52 event pairs, 0 based on Foata normal form. 1/38 useless extension candidates. Maximal degree in co-relation 134. Up to 14 conditions per place. [2023-09-01 01:37:32,472 INFO L137 encePairwiseOnDemand]: 556/561 looper letters, 17 selfloop transitions, 3 changer transitions 8/28 dead transitions. [2023-09-01 01:37:32,472 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 28 transitions, 174 flow [2023-09-01 01:37:32,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 01:37:32,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 01:37:32,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1354 transitions. [2023-09-01 01:37:32,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40225787284610814 [2023-09-01 01:37:32,475 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1354 transitions. [2023-09-01 01:37:32,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1354 transitions. [2023-09-01 01:37:32,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:37:32,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1354 transitions. [2023-09-01 01:37:32,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 225.66666666666666) internal successors, (1354), 6 states have internal predecessors, (1354), 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) [2023-09-01 01:37:32,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 561.0) internal successors, (3927), 7 states have internal predecessors, (3927), 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) [2023-09-01 01:37:32,481 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 561.0) internal successors, (3927), 7 states have internal predecessors, (3927), 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) [2023-09-01 01:37:32,481 INFO L175 Difference]: Start difference. First operand has 45 places, 18 transitions, 94 flow. Second operand 6 states and 1354 transitions. [2023-09-01 01:37:32,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 28 transitions, 174 flow [2023-09-01 01:37:32,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 28 transitions, 146 flow, removed 2 selfloop flow, removed 9 redundant places. [2023-09-01 01:37:32,482 INFO L231 Difference]: Finished difference. Result has 40 places, 16 transitions, 62 flow [2023-09-01 01:37:32,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=561, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=62, PETRI_PLACES=40, PETRI_TRANSITIONS=16} [2023-09-01 01:37:32,483 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 1 predicate places. [2023-09-01 01:37:32,483 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 16 transitions, 62 flow [2023-09-01 01:37:32,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 224.2) internal successors, (1121), 5 states have internal predecessors, (1121), 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) [2023-09-01 01:37:32,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:37:32,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:37:32,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 01:37:32,484 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 01:37:32,484 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:37:32,484 INFO L85 PathProgramCache]: Analyzing trace with hash -629481782, now seen corresponding path program 6 times [2023-09-01 01:37:32,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:37:32,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538142395] [2023-09-01 01:37:32,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:37:32,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:37:32,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:37:32,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:37:32,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:37:32,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538142395] [2023-09-01 01:37:32,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538142395] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:37:32,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:37:32,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 01:37:32,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629828560] [2023-09-01 01:37:32,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:37:32,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 01:37:32,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:37:32,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 01:37:32,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 01:37:32,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 561 [2023-09-01 01:37:32,810 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 16 transitions, 62 flow. Second operand has 5 states, 5 states have (on average 224.2) internal successors, (1121), 5 states have internal predecessors, (1121), 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) [2023-09-01 01:37:32,810 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:37:32,810 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 561 [2023-09-01 01:37:32,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:37:32,893 INFO L130 PetriNetUnfolder]: 5/25 cut-off events. [2023-09-01 01:37:32,893 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 01:37:32,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 25 events. 5/25 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 0 based on Foata normal form. 1/26 useless extension candidates. Maximal degree in co-relation 81. Up to 10 conditions per place. [2023-09-01 01:37:32,893 INFO L137 encePairwiseOnDemand]: 556/561 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2023-09-01 01:37:32,893 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 20 transitions, 109 flow [2023-09-01 01:37:32,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 01:37:32,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 01:37:32,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1347 transitions. [2023-09-01 01:37:32,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4001782531194296 [2023-09-01 01:37:32,896 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1347 transitions. [2023-09-01 01:37:32,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1347 transitions. [2023-09-01 01:37:32,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:37:32,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1347 transitions. [2023-09-01 01:37:32,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 224.5) internal successors, (1347), 6 states have internal predecessors, (1347), 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) [2023-09-01 01:37:32,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 561.0) internal successors, (3927), 7 states have internal predecessors, (3927), 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) [2023-09-01 01:37:32,905 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 561.0) internal successors, (3927), 7 states have internal predecessors, (3927), 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) [2023-09-01 01:37:32,905 INFO L175 Difference]: Start difference. First operand has 40 places, 16 transitions, 62 flow. Second operand 6 states and 1347 transitions. [2023-09-01 01:37:32,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 20 transitions, 109 flow [2023-09-01 01:37:32,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 20 transitions, 95 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-09-01 01:37:32,906 INFO L231 Difference]: Finished difference. Result has 35 places, 0 transitions, 0 flow [2023-09-01 01:37:32,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=561, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=35, PETRI_TRANSITIONS=0} [2023-09-01 01:37:32,906 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -4 predicate places. [2023-09-01 01:37:32,907 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 0 transitions, 0 flow [2023-09-01 01:37:32,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 224.2) internal successors, (1121), 5 states have internal predecessors, (1121), 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) [2023-09-01 01:37:32,909 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 17 remaining) [2023-09-01 01:37:32,911 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 17 remaining) [2023-09-01 01:37:32,911 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 17 remaining) [2023-09-01 01:37:32,911 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 17 remaining) [2023-09-01 01:37:32,911 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 17 remaining) [2023-09-01 01:37:32,911 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 17 remaining) [2023-09-01 01:37:32,911 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 17 remaining) [2023-09-01 01:37:32,911 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 17 remaining) [2023-09-01 01:37:32,911 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 17 remaining) [2023-09-01 01:37:32,912 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 17 remaining) [2023-09-01 01:37:32,912 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 17 remaining) [2023-09-01 01:37:32,912 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 17 remaining) [2023-09-01 01:37:32,912 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (4 of 17 remaining) [2023-09-01 01:37:32,912 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK (3 of 17 remaining) [2023-09-01 01:37:32,912 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 17 remaining) [2023-09-01 01:37:32,912 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 17 remaining) [2023-09-01 01:37:32,913 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 17 remaining) [2023-09-01 01:37:32,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 01:37:32,913 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:37:32,915 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 01:37:32,915 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 01:37:32,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 01:37:32 BasicIcfg [2023-09-01 01:37:32,918 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 01:37:32,919 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 01:37:32,919 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 01:37:32,919 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 01:37:32,919 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 01:37:20" (3/4) ... [2023-09-01 01:37:32,921 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 01:37:32,925 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-09-01 01:37:32,925 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-09-01 01:37:32,925 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-09-01 01:37:32,928 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2023-09-01 01:37:32,928 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 01:37:32,928 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-09-01 01:37:32,929 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 01:37:32,959 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 01:37:32,960 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 01:37:32,960 INFO L158 Benchmark]: Toolchain (without parser) took 12997.13ms. Allocated memory was 67.1MB in the beginning and 255.9MB in the end (delta: 188.7MB). Free memory was 40.6MB in the beginning and 219.0MB in the end (delta: -178.4MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. [2023-09-01 01:37:32,960 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 67.1MB. Free memory is still 45.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 01:37:32,961 INFO L158 Benchmark]: CACSL2BoogieTranslator took 219.51ms. Allocated memory is still 67.1MB. Free memory was 40.4MB in the beginning and 28.5MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-09-01 01:37:32,961 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.48ms. Allocated memory was 67.1MB in the beginning and 98.6MB in the end (delta: 31.5MB). Free memory was 28.3MB in the beginning and 79.1MB in the end (delta: -50.8MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. [2023-09-01 01:37:32,961 INFO L158 Benchmark]: Boogie Preprocessor took 37.46ms. Allocated memory is still 98.6MB. Free memory was 79.1MB in the beginning and 77.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 01:37:32,961 INFO L158 Benchmark]: RCFGBuilder took 509.73ms. Allocated memory is still 98.6MB. Free memory was 77.1MB in the beginning and 55.2MB in the end (delta: 21.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-09-01 01:37:32,961 INFO L158 Benchmark]: TraceAbstraction took 12123.24ms. Allocated memory was 98.6MB in the beginning and 255.9MB in the end (delta: 157.3MB). Free memory was 54.5MB in the beginning and 223.2MB in the end (delta: -168.6MB). Peak memory consumption was 132.7MB. Max. memory is 16.1GB. [2023-09-01 01:37:32,962 INFO L158 Benchmark]: Witness Printer took 41.22ms. Allocated memory is still 255.9MB. Free memory was 223.2MB in the beginning and 219.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 01:37:32,963 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 67.1MB. Free memory is still 45.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 219.51ms. Allocated memory is still 67.1MB. Free memory was 40.4MB in the beginning and 28.5MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.48ms. Allocated memory was 67.1MB in the beginning and 98.6MB in the end (delta: 31.5MB). Free memory was 28.3MB in the beginning and 79.1MB in the end (delta: -50.8MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.46ms. Allocated memory is still 98.6MB. Free memory was 79.1MB in the beginning and 77.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 509.73ms. Allocated memory is still 98.6MB. Free memory was 77.1MB in the beginning and 55.2MB in the end (delta: 21.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 12123.24ms. Allocated memory was 98.6MB in the beginning and 255.9MB in the end (delta: 157.3MB). Free memory was 54.5MB in the beginning and 223.2MB in the end (delta: -168.6MB). Peak memory consumption was 132.7MB. Max. memory is 16.1GB. * Witness Printer took 41.22ms. Allocated memory is still 255.9MB. Free memory was 223.2MB in the beginning and 219.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.3s, 255 PlacesBefore, 39 PlacesAfterwards, 258 TransitionsBefore, 29 TransitionsAfterwards, 18330 CoEnabledTransitionPairs, 8 FixpointIterations, 86 TrivialSequentialCompositions, 155 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 41 ConcurrentYvCompositions, 13 ChoiceCompositions, 296 TotalNumberOfCompositions, 16313 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 16313, independent: 16313, independent conditional: 0, independent unconditional: 16313, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 10605, independent: 10605, independent conditional: 0, independent unconditional: 10605, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 16313, independent: 5708, independent conditional: 0, independent unconditional: 5708, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 10605, unknown conditional: 0, unknown unconditional: 10605] , Statistics on independence cache: Total cache size (in pairs): 36, Positive cache size: 36, Positive conditional cache size: 0, Positive unconditional cache size: 36, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, 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: -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: 88]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 66]: 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 7 procedures, 388 locations, 17 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: 12.0s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1096 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 689 mSDsluCounter, 245 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 150 mSDsCounter, 78 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1272 IncrementalHoareTripleChecker+Invalid, 1350 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 78 mSolverCounterUnsat, 95 mSDtfsCounter, 1272 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=113occurred in iteration=9, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 127 NumberOfCodeBlocks, 127 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 1467 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 01:37:32,985 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