./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a900e47bcb0579a731ecfed3c71b01054e5f0917c7f65049265d17494d326436 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 21:34:52,544 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 21:34:52,546 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 21:34:52,575 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 21:34:52,577 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 21:34:52,580 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 21:34:52,581 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 21:34:52,583 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 21:34:52,585 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 21:34:52,588 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 21:34:52,589 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 21:34:52,591 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 21:34:52,592 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 21:34:52,594 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 21:34:52,595 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 21:34:52,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 21:34:52,601 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 21:34:52,602 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 21:34:52,603 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 21:34:52,607 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 21:34:52,608 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 21:34:52,609 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 21:34:52,610 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 21:34:52,610 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 21:34:52,616 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 21:34:52,616 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 21:34:52,616 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 21:34:52,618 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 21:34:52,618 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 21:34:52,619 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 21:34:52,623 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 21:34:52,624 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 21:34:52,625 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 21:34:52,626 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 21:34:52,626 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 21:34:52,626 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 21:34:52,627 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 21:34:52,627 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 21:34:52,627 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 21:34:52,628 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 21:34:52,628 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 21:34:52,630 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 21:34:52,655 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 21:34:52,655 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 21:34:52,656 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 21:34:52,656 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 21:34:52,657 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 21:34:52,657 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 21:34:52,657 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 21:34:52,658 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 21:34:52,658 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 21:34:52,658 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 21:34:52,659 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 21:34:52,659 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 21:34:52,659 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 21:34:52,659 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 21:34:52,659 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 21:34:52,659 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 21:34:52,660 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 21:34:52,660 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 21:34:52,660 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 21:34:52,660 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 21:34:52,660 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 21:34:52,660 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 21:34:52,661 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 21:34:52,661 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 21:34:52,661 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 21:34:52,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 21:34:52,661 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 21:34:52,662 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 21:34:52,662 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 21:34:52,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 21:34:52,662 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 21:34:52,662 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 21:34:52,663 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 21:34:52,663 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 21:34:52,663 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a900e47bcb0579a731ecfed3c71b01054e5f0917c7f65049265d17494d326436 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 21:34:52,891 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 21:34:52,909 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 21:34:52,911 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 21:34:52,911 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 21:34:52,912 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 21:34:52,912 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i [2023-08-29 21:34:53,878 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 21:34:54,087 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 21:34:54,088 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i [2023-08-29 21:34:54,096 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b900772b0/a6f335c325c14b40bfd57cdbb7fbd4a6/FLAGf4df89ede [2023-08-29 21:34:54,106 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b900772b0/a6f335c325c14b40bfd57cdbb7fbd4a6 [2023-08-29 21:34:54,107 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 21:34:54,108 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 21:34:54,110 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 21:34:54,110 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 21:34:54,112 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 21:34:54,112 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:34:54" (1/1) ... [2023-08-29 21:34:54,113 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e16a43b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:34:54, skipping insertion in model container [2023-08-29 21:34:54,113 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:34:54" (1/1) ... [2023-08-29 21:34:54,117 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 21:34:54,139 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 21:34:54,233 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i[1103,1116] [2023-08-29 21:34:54,318 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 21:34:54,330 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 21:34:54,339 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i[1103,1116] [2023-08-29 21:34:54,381 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 21:34:54,410 INFO L208 MainTranslator]: Completed translation [2023-08-29 21:34:54,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:34:54 WrapperNode [2023-08-29 21:34:54,411 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 21:34:54,412 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 21:34:54,412 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 21:34:54,412 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 21:34:54,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:34:54" (1/1) ... [2023-08-29 21:34:54,439 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:34:54" (1/1) ... [2023-08-29 21:34:54,460 INFO L138 Inliner]: procedures = 162, calls = 40, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 77 [2023-08-29 21:34:54,460 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 21:34:54,461 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 21:34:54,461 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 21:34:54,461 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 21:34:54,466 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:34:54" (1/1) ... [2023-08-29 21:34:54,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:34:54" (1/1) ... [2023-08-29 21:34:54,473 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:34:54" (1/1) ... [2023-08-29 21:34:54,473 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:34:54" (1/1) ... [2023-08-29 21:34:54,475 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:34:54" (1/1) ... [2023-08-29 21:34:54,476 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:34:54" (1/1) ... [2023-08-29 21:34:54,477 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:34:54" (1/1) ... [2023-08-29 21:34:54,478 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:34:54" (1/1) ... [2023-08-29 21:34:54,479 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 21:34:54,480 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 21:34:54,480 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 21:34:54,480 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 21:34:54,480 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:34:54" (1/1) ... [2023-08-29 21:34:54,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 21:34:54,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 21:34:54,507 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 21:34:54,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 21:34:54,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 21:34:54,533 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-29 21:34:54,533 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-29 21:34:54,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 21:34:54,533 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 21:34:54,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 21:34:54,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 21:34:54,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 21:34:54,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 21:34:54,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 21:34:54,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 21:34:54,537 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 21:34:54,678 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 21:34:54,680 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 21:34:54,889 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 21:34:54,896 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 21:34:54,897 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-29 21:34:54,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:34:54 BoogieIcfgContainer [2023-08-29 21:34:54,898 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 21:34:54,900 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 21:34:54,900 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 21:34:54,902 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 21:34:54,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 09:34:54" (1/3) ... [2023-08-29 21:34:54,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5506de71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:34:54, skipping insertion in model container [2023-08-29 21:34:54,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:34:54" (2/3) ... [2023-08-29 21:34:54,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5506de71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:34:54, skipping insertion in model container [2023-08-29 21:34:54,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:34:54" (3/3) ... [2023-08-29 21:34:54,904 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_29-multiple-protecting2-vesal_true.i [2023-08-29 21:34:54,915 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 21:34:54,916 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-29 21:34:54,916 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 21:34:54,977 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-29 21:34:55,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 109 transitions, 226 flow [2023-08-29 21:34:55,048 INFO L130 PetriNetUnfolder]: 3/108 cut-off events. [2023-08-29 21:34:55,048 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 21:34:55,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 108 events. 3/108 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 82 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2023-08-29 21:34:55,052 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 109 transitions, 226 flow [2023-08-29 21:34:55,055 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 104 transitions, 214 flow [2023-08-29 21:34:55,058 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 21:34:55,071 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 105 places, 104 transitions, 214 flow [2023-08-29 21:34:55,073 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 105 places, 104 transitions, 214 flow [2023-08-29 21:34:55,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 104 transitions, 214 flow [2023-08-29 21:34:55,116 INFO L130 PetriNetUnfolder]: 3/104 cut-off events. [2023-08-29 21:34:55,116 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 21:34:55,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 104 events. 3/104 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 81 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2023-08-29 21:34:55,118 INFO L119 LiptonReduction]: Number of co-enabled transitions 1476 [2023-08-29 21:34:57,770 INFO L134 LiptonReduction]: Checked pairs total: 4207 [2023-08-29 21:34:57,770 INFO L136 LiptonReduction]: Total number of compositions: 94 [2023-08-29 21:34:57,779 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 21:34:57,783 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;@50bc8fa8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 21:34:57,783 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-08-29 21:34:57,784 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-29 21:34:57,785 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:34:57,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:34:57,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 21:34:57,785 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 6 more)] === [2023-08-29 21:34:57,788 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:34:57,788 INFO L85 PathProgramCache]: Analyzing trace with hash 378, now seen corresponding path program 1 times [2023-08-29 21:34:57,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:34:57,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312192689] [2023-08-29 21:34:57,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:34:57,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:34:57,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:34:57,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:34:57,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:34:57,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312192689] [2023-08-29 21:34:57,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312192689] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:34:57,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:34:57,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 21:34:57,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453380028] [2023-08-29 21:34:57,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:34:57,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 21:34:57,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:34:57,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 21:34:57,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 21:34:57,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 203 [2023-08-29 21:34:57,895 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 72 flow. Second operand has 2 states, 2 states have (on average 101.5) internal successors, (203), 2 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:57,895 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:34:57,895 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 203 [2023-08-29 21:34:57,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:34:57,969 INFO L130 PetriNetUnfolder]: 84/225 cut-off events. [2023-08-29 21:34:57,969 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 21:34:57,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 423 conditions, 225 events. 84/225 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 914 event pairs, 84 based on Foata normal form. 7/186 useless extension candidates. Maximal degree in co-relation 409. Up to 193 conditions per place. [2023-08-29 21:34:57,971 INFO L137 encePairwiseOnDemand]: 199/203 looper letters, 23 selfloop transitions, 0 changer transitions 1/29 dead transitions. [2023-08-29 21:34:57,971 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 29 transitions, 112 flow [2023-08-29 21:34:57,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 21:34:57,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 21:34:57,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 230 transitions. [2023-08-29 21:34:57,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5665024630541872 [2023-08-29 21:34:57,980 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 230 transitions. [2023-08-29 21:34:57,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 230 transitions. [2023-08-29 21:34:57,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:34:57,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 230 transitions. [2023-08-29 21:34:57,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 115.0) internal successors, (230), 2 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:57,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:57,987 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:57,988 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 72 flow. Second operand 2 states and 230 transitions. [2023-08-29 21:34:57,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 29 transitions, 112 flow [2023-08-29 21:34:57,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 29 transitions, 108 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:34:57,991 INFO L231 Difference]: Finished difference. Result has 32 places, 28 transitions, 58 flow [2023-08-29 21:34:57,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=58, PETRI_PLACES=32, PETRI_TRANSITIONS=28} [2023-08-29 21:34:57,994 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -3 predicate places. [2023-08-29 21:34:57,994 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 28 transitions, 58 flow [2023-08-29 21:34:57,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 101.5) internal successors, (203), 2 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:57,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:34:57,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 21:34:57,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 21:34:57,995 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 6 more)] === [2023-08-29 21:34:57,996 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:34:57,996 INFO L85 PathProgramCache]: Analyzing trace with hash 355986475, now seen corresponding path program 1 times [2023-08-29 21:34:57,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:34:57,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358979421] [2023-08-29 21:34:57,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:34:57,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:34:58,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:34:58,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:34:58,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:34:58,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358979421] [2023-08-29 21:34:58,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358979421] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:34:58,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:34:58,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:34:58,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234586860] [2023-08-29 21:34:58,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:34:58,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:34:58,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:34:58,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:34:58,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:34:58,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 203 [2023-08-29 21:34:58,170 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:58,170 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:34:58,170 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 203 [2023-08-29 21:34:58,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:34:58,226 INFO L130 PetriNetUnfolder]: 99/266 cut-off events. [2023-08-29 21:34:58,227 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:34:58,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 503 conditions, 266 events. 99/266 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1207 event pairs, 28 based on Foata normal form. 0/218 useless extension candidates. Maximal degree in co-relation 500. Up to 136 conditions per place. [2023-08-29 21:34:58,229 INFO L137 encePairwiseOnDemand]: 198/203 looper letters, 38 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2023-08-29 21:34:58,229 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 46 transitions, 179 flow [2023-08-29 21:34:58,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:34:58,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:34:58,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 337 transitions. [2023-08-29 21:34:58,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5533661740558292 [2023-08-29 21:34:58,234 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 337 transitions. [2023-08-29 21:34:58,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 337 transitions. [2023-08-29 21:34:58,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:34:58,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 337 transitions. [2023-08-29 21:34:58,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:58,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:58,239 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:58,239 INFO L175 Difference]: Start difference. First operand has 32 places, 28 transitions, 58 flow. Second operand 3 states and 337 transitions. [2023-08-29 21:34:58,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 46 transitions, 179 flow [2023-08-29 21:34:58,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 46 transitions, 179 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 21:34:58,240 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 84 flow [2023-08-29 21:34:58,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2023-08-29 21:34:58,241 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2023-08-29 21:34:58,241 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 84 flow [2023-08-29 21:34:58,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:58,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:34:58,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:34:58,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 21:34:58,242 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 6 more)] === [2023-08-29 21:34:58,244 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:34:58,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1494394158, now seen corresponding path program 1 times [2023-08-29 21:34:58,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:34:58,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000461418] [2023-08-29 21:34:58,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:34:58,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:34:58,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:34:58,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:34:58,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:34:58,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000461418] [2023-08-29 21:34:58,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000461418] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:34:58,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:34:58,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 21:34:58,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034514650] [2023-08-29 21:34:58,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:34:58,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 21:34:58,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:34:58,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 21:34:58,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 21:34:58,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 203 [2023-08-29 21:34:58,340 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:58,340 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:34:58,340 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 203 [2023-08-29 21:34:58,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:34:58,420 INFO L130 PetriNetUnfolder]: 102/286 cut-off events. [2023-08-29 21:34:58,420 INFO L131 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2023-08-29 21:34:58,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 607 conditions, 286 events. 102/286 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1343 event pairs, 22 based on Foata normal form. 0/248 useless extension candidates. Maximal degree in co-relation 602. Up to 85 conditions per place. [2023-08-29 21:34:58,424 INFO L137 encePairwiseOnDemand]: 195/203 looper letters, 44 selfloop transitions, 9 changer transitions 0/57 dead transitions. [2023-08-29 21:34:58,425 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 57 transitions, 253 flow [2023-08-29 21:34:58,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 21:34:58,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 21:34:58,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 485 transitions. [2023-08-29 21:34:58,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47783251231527096 [2023-08-29 21:34:58,427 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 485 transitions. [2023-08-29 21:34:58,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 485 transitions. [2023-08-29 21:34:58,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:34:58,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 485 transitions. [2023-08-29 21:34:58,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:58,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:58,430 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:58,431 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 84 flow. Second operand 5 states and 485 transitions. [2023-08-29 21:34:58,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 57 transitions, 253 flow [2023-08-29 21:34:58,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 57 transitions, 243 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:34:58,433 INFO L231 Difference]: Finished difference. Result has 41 places, 34 transitions, 130 flow [2023-08-29 21:34:58,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=130, PETRI_PLACES=41, PETRI_TRANSITIONS=34} [2023-08-29 21:34:58,434 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 6 predicate places. [2023-08-29 21:34:58,435 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 34 transitions, 130 flow [2023-08-29 21:34:58,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:58,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:34:58,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:34:58,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 21:34:58,435 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 6 more)] === [2023-08-29 21:34:58,436 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:34:58,436 INFO L85 PathProgramCache]: Analyzing trace with hash 925921860, now seen corresponding path program 1 times [2023-08-29 21:34:58,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:34:58,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284656884] [2023-08-29 21:34:58,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:34:58,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:34:58,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:34:58,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:34:58,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:34:58,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284656884] [2023-08-29 21:34:58,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284656884] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:34:58,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:34:58,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 21:34:58,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415610251] [2023-08-29 21:34:58,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:34:58,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:34:58,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:34:58,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:34:58,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:34:58,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 203 [2023-08-29 21:34:58,544 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 34 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:58,544 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:34:58,544 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 203 [2023-08-29 21:34:58,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:34:58,598 INFO L130 PetriNetUnfolder]: 97/284 cut-off events. [2023-08-29 21:34:58,598 INFO L131 PetriNetUnfolder]: For 88/88 co-relation queries the response was YES. [2023-08-29 21:34:58,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 684 conditions, 284 events. 97/284 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1242 event pairs, 40 based on Foata normal form. 20/264 useless extension candidates. Maximal degree in co-relation 676. Up to 191 conditions per place. [2023-08-29 21:34:58,600 INFO L137 encePairwiseOnDemand]: 190/203 looper letters, 38 selfloop transitions, 14 changer transitions 0/54 dead transitions. [2023-08-29 21:34:58,600 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 54 transitions, 304 flow [2023-08-29 21:34:58,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:34:58,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:34:58,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 317 transitions. [2023-08-29 21:34:58,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5205254515599343 [2023-08-29 21:34:58,601 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 317 transitions. [2023-08-29 21:34:58,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 317 transitions. [2023-08-29 21:34:58,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:34:58,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 317 transitions. [2023-08-29 21:34:58,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:58,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:58,604 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:58,604 INFO L175 Difference]: Start difference. First operand has 41 places, 34 transitions, 130 flow. Second operand 3 states and 317 transitions. [2023-08-29 21:34:58,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 54 transitions, 304 flow [2023-08-29 21:34:58,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 54 transitions, 293 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-29 21:34:58,609 INFO L231 Difference]: Finished difference. Result has 43 places, 43 transitions, 205 flow [2023-08-29 21:34:58,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=205, PETRI_PLACES=43, PETRI_TRANSITIONS=43} [2023-08-29 21:34:58,610 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 8 predicate places. [2023-08-29 21:34:58,610 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 43 transitions, 205 flow [2023-08-29 21:34:58,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:58,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:34:58,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:34:58,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 21:34:58,611 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 6 more)] === [2023-08-29 21:34:58,611 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:34:58,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1334694126, now seen corresponding path program 1 times [2023-08-29 21:34:58,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:34:58,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52556569] [2023-08-29 21:34:58,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:34:58,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:34:58,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:34:58,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:34:58,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:34:58,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52556569] [2023-08-29 21:34:58,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52556569] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:34:58,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:34:58,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 21:34:58,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191298981] [2023-08-29 21:34:58,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:34:58,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 21:34:58,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:34:58,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 21:34:58,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 21:34:58,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 203 [2023-08-29 21:34:58,724 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 43 transitions, 205 flow. Second operand has 5 states, 5 states have (on average 97.8) internal successors, (489), 5 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:58,725 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:34:58,725 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 203 [2023-08-29 21:34:58,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:34:58,802 INFO L130 PetriNetUnfolder]: 76/226 cut-off events. [2023-08-29 21:34:58,802 INFO L131 PetriNetUnfolder]: For 129/130 co-relation queries the response was YES. [2023-08-29 21:34:58,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 714 conditions, 226 events. 76/226 cut-off events. For 129/130 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 927 event pairs, 18 based on Foata normal form. 5/201 useless extension candidates. Maximal degree in co-relation 705. Up to 114 conditions per place. [2023-08-29 21:34:58,803 INFO L137 encePairwiseOnDemand]: 195/203 looper letters, 67 selfloop transitions, 8 changer transitions 0/82 dead transitions. [2023-08-29 21:34:58,804 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 82 transitions, 503 flow [2023-08-29 21:34:58,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 21:34:58,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 21:34:58,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 637 transitions. [2023-08-29 21:34:58,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5229885057471264 [2023-08-29 21:34:58,805 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 637 transitions. [2023-08-29 21:34:58,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 637 transitions. [2023-08-29 21:34:58,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:34:58,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 637 transitions. [2023-08-29 21:34:58,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 106.16666666666667) internal successors, (637), 6 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:58,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:58,809 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:58,809 INFO L175 Difference]: Start difference. First operand has 43 places, 43 transitions, 205 flow. Second operand 6 states and 637 transitions. [2023-08-29 21:34:58,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 82 transitions, 503 flow [2023-08-29 21:34:58,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 82 transitions, 474 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-29 21:34:58,812 INFO L231 Difference]: Finished difference. Result has 48 places, 41 transitions, 200 flow [2023-08-29 21:34:58,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=200, PETRI_PLACES=48, PETRI_TRANSITIONS=41} [2023-08-29 21:34:58,812 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 13 predicate places. [2023-08-29 21:34:58,812 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 41 transitions, 200 flow [2023-08-29 21:34:58,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 97.8) internal successors, (489), 5 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:58,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:34:58,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:34:58,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 21:34:58,813 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 6 more)] === [2023-08-29 21:34:58,813 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:34:58,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1554153465, now seen corresponding path program 1 times [2023-08-29 21:34:58,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:34:58,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955494023] [2023-08-29 21:34:58,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:34:58,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:34:58,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:34:58,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:34:58,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:34:58,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955494023] [2023-08-29 21:34:58,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955494023] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:34:58,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:34:58,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 21:34:58,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261192717] [2023-08-29 21:34:58,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:34:58,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 21:34:58,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:34:58,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 21:34:58,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-29 21:34:58,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 203 [2023-08-29 21:34:58,892 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 41 transitions, 200 flow. Second operand has 6 states, 6 states have (on average 85.83333333333333) internal successors, (515), 6 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:58,892 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:34:58,892 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 203 [2023-08-29 21:34:58,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:34:58,994 INFO L130 PetriNetUnfolder]: 75/221 cut-off events. [2023-08-29 21:34:58,994 INFO L131 PetriNetUnfolder]: For 157/158 co-relation queries the response was YES. [2023-08-29 21:34:58,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 704 conditions, 221 events. 75/221 cut-off events. For 157/158 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 887 event pairs, 10 based on Foata normal form. 5/195 useless extension candidates. Maximal degree in co-relation 694. Up to 113 conditions per place. [2023-08-29 21:34:58,995 INFO L137 encePairwiseOnDemand]: 194/203 looper letters, 55 selfloop transitions, 12 changer transitions 0/74 dead transitions. [2023-08-29 21:34:58,995 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 74 transitions, 453 flow [2023-08-29 21:34:58,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-29 21:34:58,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-29 21:34:58,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 894 transitions. [2023-08-29 21:34:58,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4403940886699507 [2023-08-29 21:34:58,997 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 894 transitions. [2023-08-29 21:34:58,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 894 transitions. [2023-08-29 21:34:58,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:34:58,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 894 transitions. [2023-08-29 21:34:58,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 89.4) internal successors, (894), 10 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:59,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 203.0) internal successors, (2233), 11 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:59,002 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 203.0) internal successors, (2233), 11 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:59,002 INFO L175 Difference]: Start difference. First operand has 48 places, 41 transitions, 200 flow. Second operand 10 states and 894 transitions. [2023-08-29 21:34:59,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 74 transitions, 453 flow [2023-08-29 21:34:59,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 74 transitions, 426 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-08-29 21:34:59,004 INFO L231 Difference]: Finished difference. Result has 51 places, 43 transitions, 214 flow [2023-08-29 21:34:59,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=214, PETRI_PLACES=51, PETRI_TRANSITIONS=43} [2023-08-29 21:34:59,005 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 16 predicate places. [2023-08-29 21:34:59,005 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 43 transitions, 214 flow [2023-08-29 21:34:59,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 85.83333333333333) internal successors, (515), 6 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:59,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:34:59,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:34:59,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 21:34:59,006 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 6 more)] === [2023-08-29 21:34:59,006 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:34:59,006 INFO L85 PathProgramCache]: Analyzing trace with hash 916473406, now seen corresponding path program 1 times [2023-08-29 21:34:59,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:34:59,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424916113] [2023-08-29 21:34:59,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:34:59,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:34:59,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:34:59,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:34:59,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:34:59,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424916113] [2023-08-29 21:34:59,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424916113] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:34:59,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:34:59,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 21:34:59,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297973700] [2023-08-29 21:34:59,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:34:59,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 21:34:59,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:34:59,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 21:34:59,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-29 21:34:59,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 203 [2023-08-29 21:34:59,075 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 43 transitions, 214 flow. Second operand has 6 states, 6 states have (on average 97.83333333333333) internal successors, (587), 6 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:59,075 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:34:59,075 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 203 [2023-08-29 21:34:59,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:34:59,143 INFO L130 PetriNetUnfolder]: 74/217 cut-off events. [2023-08-29 21:34:59,144 INFO L131 PetriNetUnfolder]: For 146/147 co-relation queries the response was YES. [2023-08-29 21:34:59,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 679 conditions, 217 events. 74/217 cut-off events. For 146/147 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 863 event pairs, 15 based on Foata normal form. 4/191 useless extension candidates. Maximal degree in co-relation 669. Up to 112 conditions per place. [2023-08-29 21:34:59,145 INFO L137 encePairwiseOnDemand]: 195/203 looper letters, 64 selfloop transitions, 11 changer transitions 0/82 dead transitions. [2023-08-29 21:34:59,145 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 82 transitions, 505 flow [2023-08-29 21:34:59,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 21:34:59,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 21:34:59,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 729 transitions. [2023-08-29 21:34:59,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130190007037297 [2023-08-29 21:34:59,147 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 729 transitions. [2023-08-29 21:34:59,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 729 transitions. [2023-08-29 21:34:59,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:34:59,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 729 transitions. [2023-08-29 21:34:59,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 104.14285714285714) internal successors, (729), 7 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:59,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:59,150 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:59,150 INFO L175 Difference]: Start difference. First operand has 51 places, 43 transitions, 214 flow. Second operand 7 states and 729 transitions. [2023-08-29 21:34:59,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 82 transitions, 505 flow [2023-08-29 21:34:59,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 82 transitions, 481 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-08-29 21:34:59,152 INFO L231 Difference]: Finished difference. Result has 51 places, 43 transitions, 218 flow [2023-08-29 21:34:59,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=218, PETRI_PLACES=51, PETRI_TRANSITIONS=43} [2023-08-29 21:34:59,153 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 16 predicate places. [2023-08-29 21:34:59,153 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 43 transitions, 218 flow [2023-08-29 21:34:59,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 97.83333333333333) internal successors, (587), 6 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:59,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:34:59,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:34:59,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 21:34:59,154 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 6 more)] === [2023-08-29 21:34:59,154 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:34:59,154 INFO L85 PathProgramCache]: Analyzing trace with hash 622371393, now seen corresponding path program 1 times [2023-08-29 21:34:59,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:34:59,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160207599] [2023-08-29 21:34:59,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:34:59,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:34:59,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:34:59,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:34:59,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:34:59,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160207599] [2023-08-29 21:34:59,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160207599] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:34:59,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:34:59,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:34:59,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336107232] [2023-08-29 21:34:59,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:34:59,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:34:59,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:34:59,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:34:59,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:34:59,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 203 [2023-08-29 21:34:59,197 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 43 transitions, 218 flow. Second operand has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:59,197 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:34:59,198 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 203 [2023-08-29 21:34:59,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:34:59,229 INFO L130 PetriNetUnfolder]: 55/181 cut-off events. [2023-08-29 21:34:59,229 INFO L131 PetriNetUnfolder]: For 161/161 co-relation queries the response was YES. [2023-08-29 21:34:59,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 570 conditions, 181 events. 55/181 cut-off events. For 161/161 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 663 event pairs, 39 based on Foata normal form. 0/167 useless extension candidates. Maximal degree in co-relation 561. Up to 141 conditions per place. [2023-08-29 21:34:59,230 INFO L137 encePairwiseOnDemand]: 200/203 looper letters, 30 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2023-08-29 21:34:59,230 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 41 transitions, 274 flow [2023-08-29 21:34:59,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:34:59,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:34:59,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 303 transitions. [2023-08-29 21:34:59,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4975369458128079 [2023-08-29 21:34:59,231 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 303 transitions. [2023-08-29 21:34:59,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 303 transitions. [2023-08-29 21:34:59,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:34:59,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 303 transitions. [2023-08-29 21:34:59,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:59,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:59,233 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:59,233 INFO L175 Difference]: Start difference. First operand has 51 places, 43 transitions, 218 flow. Second operand 3 states and 303 transitions. [2023-08-29 21:34:59,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 41 transitions, 274 flow [2023-08-29 21:34:59,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 41 transitions, 252 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-29 21:34:59,235 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 192 flow [2023-08-29 21:34:59,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2023-08-29 21:34:59,235 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 11 predicate places. [2023-08-29 21:34:59,235 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 192 flow [2023-08-29 21:34:59,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:59,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:34:59,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:34:59,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 21:34:59,236 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 6 more)] === [2023-08-29 21:34:59,236 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:34:59,236 INFO L85 PathProgramCache]: Analyzing trace with hash 622371392, now seen corresponding path program 1 times [2023-08-29 21:34:59,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:34:59,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830091896] [2023-08-29 21:34:59,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:34:59,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:34:59,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:34:59,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:34:59,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:34:59,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830091896] [2023-08-29 21:34:59,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830091896] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:34:59,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:34:59,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:34:59,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742653721] [2023-08-29 21:34:59,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:34:59,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:34:59,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:34:59,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:34:59,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:34:59,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 203 [2023-08-29 21:34:59,284 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 192 flow. Second operand has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:59,284 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:34:59,284 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 203 [2023-08-29 21:34:59,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:34:59,317 INFO L130 PetriNetUnfolder]: 44/156 cut-off events. [2023-08-29 21:34:59,317 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-08-29 21:34:59,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 455 conditions, 156 events. 44/156 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 531 event pairs, 33 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 447. Up to 119 conditions per place. [2023-08-29 21:34:59,318 INFO L137 encePairwiseOnDemand]: 200/203 looper letters, 28 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2023-08-29 21:34:59,318 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 39 transitions, 244 flow [2023-08-29 21:34:59,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:34:59,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:34:59,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 299 transitions. [2023-08-29 21:34:59,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4909688013136289 [2023-08-29 21:34:59,319 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 299 transitions. [2023-08-29 21:34:59,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 299 transitions. [2023-08-29 21:34:59,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:34:59,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 299 transitions. [2023-08-29 21:34:59,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:59,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:59,321 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:59,321 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 192 flow. Second operand 3 states and 299 transitions. [2023-08-29 21:34:59,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 39 transitions, 244 flow [2023-08-29 21:34:59,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 39 transitions, 240 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:34:59,322 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 184 flow [2023-08-29 21:34:59,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2023-08-29 21:34:59,323 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 10 predicate places. [2023-08-29 21:34:59,323 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 184 flow [2023-08-29 21:34:59,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:59,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:34:59,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:34:59,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 21:34:59,324 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 6 more)] === [2023-08-29 21:34:59,324 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:34:59,324 INFO L85 PathProgramCache]: Analyzing trace with hash 40126956, now seen corresponding path program 1 times [2023-08-29 21:34:59,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:34:59,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104659155] [2023-08-29 21:34:59,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:34:59,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:34:59,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:34:59,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:34:59,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:34:59,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104659155] [2023-08-29 21:34:59,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104659155] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:34:59,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:34:59,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 21:34:59,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617037036] [2023-08-29 21:34:59,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:34:59,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 21:34:59,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:34:59,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 21:34:59,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-29 21:34:59,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 203 [2023-08-29 21:34:59,465 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:59,466 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:34:59,466 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 203 [2023-08-29 21:34:59,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:34:59,502 INFO L130 PetriNetUnfolder]: 23/112 cut-off events. [2023-08-29 21:34:59,502 INFO L131 PetriNetUnfolder]: For 55/55 co-relation queries the response was YES. [2023-08-29 21:34:59,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 112 events. 23/112 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 333 event pairs, 2 based on Foata normal form. 7/119 useless extension candidates. Maximal degree in co-relation 327. Up to 50 conditions per place. [2023-08-29 21:34:59,502 INFO L137 encePairwiseOnDemand]: 197/203 looper letters, 36 selfloop transitions, 8 changer transitions 0/50 dead transitions. [2023-08-29 21:34:59,503 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 50 transitions, 316 flow [2023-08-29 21:34:59,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 21:34:59,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 21:34:59,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 409 transitions. [2023-08-29 21:34:59,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5036945812807881 [2023-08-29 21:34:59,504 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 409 transitions. [2023-08-29 21:34:59,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 409 transitions. [2023-08-29 21:34:59,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:34:59,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 409 transitions. [2023-08-29 21:34:59,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 102.25) internal successors, (409), 4 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:59,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 203.0) internal successors, (1015), 5 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:59,506 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 203.0) internal successors, (1015), 5 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:59,507 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 184 flow. Second operand 4 states and 409 transitions. [2023-08-29 21:34:59,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 50 transitions, 316 flow [2023-08-29 21:34:59,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 50 transitions, 306 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-29 21:34:59,508 INFO L231 Difference]: Finished difference. Result has 46 places, 38 transitions, 193 flow [2023-08-29 21:34:59,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=193, PETRI_PLACES=46, PETRI_TRANSITIONS=38} [2023-08-29 21:34:59,509 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 11 predicate places. [2023-08-29 21:34:59,509 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 38 transitions, 193 flow [2023-08-29 21:34:59,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:59,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:34:59,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:34:59,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-29 21:34:59,510 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 6 more)] === [2023-08-29 21:34:59,510 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:34:59,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1675693207, now seen corresponding path program 1 times [2023-08-29 21:34:59,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:34:59,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894468165] [2023-08-29 21:34:59,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:34:59,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:34:59,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:34:59,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:34:59,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:34:59,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894468165] [2023-08-29 21:34:59,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894468165] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:34:59,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:34:59,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 21:34:59,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455302778] [2023-08-29 21:34:59,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:34:59,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 21:34:59,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:34:59,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 21:34:59,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 21:34:59,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 203 [2023-08-29 21:34:59,615 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 38 transitions, 193 flow. Second operand has 5 states, 5 states have (on average 99.2) internal successors, (496), 5 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:59,615 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:34:59,615 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 203 [2023-08-29 21:34:59,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:34:59,661 INFO L130 PetriNetUnfolder]: 25/114 cut-off events. [2023-08-29 21:34:59,661 INFO L131 PetriNetUnfolder]: For 86/86 co-relation queries the response was YES. [2023-08-29 21:34:59,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 385 conditions, 114 events. 25/114 cut-off events. For 86/86 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 326 event pairs, 12 based on Foata normal form. 1/115 useless extension candidates. Maximal degree in co-relation 377. Up to 63 conditions per place. [2023-08-29 21:34:59,662 INFO L137 encePairwiseOnDemand]: 197/203 looper letters, 34 selfloop transitions, 9 changer transitions 0/48 dead transitions. [2023-08-29 21:34:59,662 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 48 transitions, 324 flow [2023-08-29 21:34:59,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 21:34:59,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 21:34:59,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 606 transitions. [2023-08-29 21:34:59,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4975369458128079 [2023-08-29 21:34:59,663 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 606 transitions. [2023-08-29 21:34:59,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 606 transitions. [2023-08-29 21:34:59,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:34:59,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 606 transitions. [2023-08-29 21:34:59,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 101.0) internal successors, (606), 6 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:59,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:59,666 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:59,666 INFO L175 Difference]: Start difference. First operand has 46 places, 38 transitions, 193 flow. Second operand 6 states and 606 transitions. [2023-08-29 21:34:59,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 48 transitions, 324 flow [2023-08-29 21:34:59,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 48 transitions, 323 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 21:34:59,668 INFO L231 Difference]: Finished difference. Result has 49 places, 37 transitions, 202 flow [2023-08-29 21:34:59,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=202, PETRI_PLACES=49, PETRI_TRANSITIONS=37} [2023-08-29 21:34:59,668 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 14 predicate places. [2023-08-29 21:34:59,668 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 37 transitions, 202 flow [2023-08-29 21:34:59,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 99.2) internal successors, (496), 5 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:59,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:34:59,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:34:59,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-29 21:34:59,669 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 6 more)] === [2023-08-29 21:34:59,669 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:34:59,669 INFO L85 PathProgramCache]: Analyzing trace with hash -76870436, now seen corresponding path program 1 times [2023-08-29 21:34:59,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:34:59,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696077677] [2023-08-29 21:34:59,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:34:59,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:34:59,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:34:59,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:34:59,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:34:59,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696077677] [2023-08-29 21:34:59,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696077677] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:34:59,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:34:59,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:34:59,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521365705] [2023-08-29 21:34:59,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:34:59,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:34:59,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:34:59,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:34:59,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:34:59,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 203 [2023-08-29 21:34:59,772 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 37 transitions, 202 flow. Second operand has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:59,772 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:34:59,772 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 203 [2023-08-29 21:34:59,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:34:59,790 INFO L130 PetriNetUnfolder]: 23/109 cut-off events. [2023-08-29 21:34:59,790 INFO L131 PetriNetUnfolder]: For 92/92 co-relation queries the response was YES. [2023-08-29 21:34:59,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 392 conditions, 109 events. 23/109 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 311 event pairs, 18 based on Foata normal form. 2/111 useless extension candidates. Maximal degree in co-relation 384. Up to 90 conditions per place. [2023-08-29 21:34:59,791 INFO L137 encePairwiseOnDemand]: 201/203 looper letters, 0 selfloop transitions, 0 changer transitions 36/36 dead transitions. [2023-08-29 21:34:59,791 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 36 transitions, 258 flow [2023-08-29 21:34:59,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:34:59,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:34:59,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 309 transitions. [2023-08-29 21:34:59,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5073891625615764 [2023-08-29 21:34:59,792 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 309 transitions. [2023-08-29 21:34:59,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 309 transitions. [2023-08-29 21:34:59,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:34:59,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 309 transitions. [2023-08-29 21:34:59,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:59,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:59,794 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:59,794 INFO L175 Difference]: Start difference. First operand has 49 places, 37 transitions, 202 flow. Second operand 3 states and 309 transitions. [2023-08-29 21:34:59,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 36 transitions, 258 flow [2023-08-29 21:34:59,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 36 transitions, 240 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-29 21:34:59,795 INFO L231 Difference]: Finished difference. Result has 45 places, 0 transitions, 0 flow [2023-08-29 21:34:59,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=45, PETRI_TRANSITIONS=0} [2023-08-29 21:34:59,795 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 10 predicate places. [2023-08-29 21:34:59,796 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 0 transitions, 0 flow [2023-08-29 21:34:59,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:59,798 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 9 remaining) [2023-08-29 21:34:59,798 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 9 remaining) [2023-08-29 21:34:59,798 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (6 of 9 remaining) [2023-08-29 21:34:59,798 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (5 of 9 remaining) [2023-08-29 21:34:59,798 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (4 of 9 remaining) [2023-08-29 21:34:59,799 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 9 remaining) [2023-08-29 21:34:59,799 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 9 remaining) [2023-08-29 21:34:59,799 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (1 of 9 remaining) [2023-08-29 21:34:59,799 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 9 remaining) [2023-08-29 21:34:59,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-29 21:34:59,799 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:34:59,801 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 21:34:59,801 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 21:34:59,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 09:34:59 BasicIcfg [2023-08-29 21:34:59,803 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 21:34:59,804 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 21:34:59,804 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 21:34:59,804 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 21:34:59,804 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:34:54" (3/4) ... [2023-08-29 21:34:59,806 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-29 21:34:59,810 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2_fun [2023-08-29 21:34:59,812 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2023-08-29 21:34:59,813 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-29 21:34:59,813 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-29 21:34:59,813 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-29 21:34:59,832 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-29 21:34:59,832 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 21:34:59,832 INFO L158 Benchmark]: Toolchain (without parser) took 5724.14ms. Allocated memory was 79.7MB in the beginning and 142.6MB in the end (delta: 62.9MB). Free memory was 55.8MB in the beginning and 83.1MB in the end (delta: -27.3MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2023-08-29 21:34:59,832 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 58.7MB. Free memory is still 36.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 21:34:59,833 INFO L158 Benchmark]: CACSL2BoogieTranslator took 301.56ms. Allocated memory is still 79.7MB. Free memory was 55.5MB in the beginning and 36.4MB in the end (delta: 19.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-08-29 21:34:59,833 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.18ms. Allocated memory is still 79.7MB. Free memory was 36.4MB in the beginning and 34.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 21:34:59,833 INFO L158 Benchmark]: Boogie Preprocessor took 18.57ms. Allocated memory is still 79.7MB. Free memory was 34.1MB in the beginning and 32.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 21:34:59,833 INFO L158 Benchmark]: RCFGBuilder took 418.74ms. Allocated memory is still 79.7MB. Free memory was 32.7MB in the beginning and 45.4MB in the end (delta: -12.7MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. [2023-08-29 21:34:59,833 INFO L158 Benchmark]: TraceAbstraction took 4903.62ms. Allocated memory was 79.7MB in the beginning and 142.6MB in the end (delta: 62.9MB). Free memory was 45.0MB in the beginning and 86.3MB in the end (delta: -41.3MB). Peak memory consumption was 23.6MB. Max. memory is 16.1GB. [2023-08-29 21:34:59,834 INFO L158 Benchmark]: Witness Printer took 28.20ms. Allocated memory is still 142.6MB. Free memory was 86.3MB in the beginning and 83.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 21:34:59,835 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 58.7MB. Free memory is still 36.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 301.56ms. Allocated memory is still 79.7MB. Free memory was 55.5MB in the beginning and 36.4MB in the end (delta: 19.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.18ms. Allocated memory is still 79.7MB. Free memory was 36.4MB in the beginning and 34.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.57ms. Allocated memory is still 79.7MB. Free memory was 34.1MB in the beginning and 32.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 418.74ms. Allocated memory is still 79.7MB. Free memory was 32.7MB in the beginning and 45.4MB in the end (delta: -12.7MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. * TraceAbstraction took 4903.62ms. Allocated memory was 79.7MB in the beginning and 142.6MB in the end (delta: 62.9MB). Free memory was 45.0MB in the beginning and 86.3MB in the end (delta: -41.3MB). Peak memory consumption was 23.6MB. Max. memory is 16.1GB. * Witness Printer took 28.20ms. Allocated memory is still 142.6MB. Free memory was 86.3MB in the beginning and 83.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.7s, 105 PlacesBefore, 35 PlacesAfterwards, 104 TransitionsBefore, 33 TransitionsAfterwards, 1476 CoEnabledTransitionPairs, 6 FixpointIterations, 47 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 1 ChoiceCompositions, 94 TotalNumberOfCompositions, 4207 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1441, independent: 1195, independent conditional: 0, independent unconditional: 1195, dependent: 246, dependent conditional: 0, dependent unconditional: 246, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 768, independent: 723, independent conditional: 0, independent unconditional: 723, dependent: 45, dependent conditional: 0, dependent unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1441, independent: 472, independent conditional: 0, independent unconditional: 472, dependent: 201, dependent conditional: 0, dependent unconditional: 201, unknown: 768, unknown conditional: 0, unknown unconditional: 768] , Statistics on independence cache: Total cache size (in pairs): 55, Positive cache size: 32, Positive conditional cache size: 0, Positive unconditional cache size: 32, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23, 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: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed 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: 696]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 127 locations, 9 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: 4.8s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 707 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 450 mSDsluCounter, 124 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 46 mSDsCounter, 89 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1169 IncrementalHoareTripleChecker+Invalid, 1258 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 89 mSolverCounterUnsat, 78 mSDtfsCounter, 1169 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=218occurred in iteration=7, InterpolantAutomatonStates: 55, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 134 NumberOfCodeBlocks, 134 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 122 ConstructedInterpolants, 0 QuantifiedInterpolants, 653 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-29 21:34:59,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE