./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/chl-match-subst.wvr.c --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/weaver/chl-match-subst.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3c2ccb27a3ce50ce458a10a4aa8fbbd4d9c9d88060b8c7df98385ed8946afbfa --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 22:44:46,340 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 22:44:46,342 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 22:44:46,386 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 22:44:46,388 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 22:44:46,392 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 22:44:46,394 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 22:44:46,397 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 22:44:46,398 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 22:44:46,403 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 22:44:46,403 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 22:44:46,406 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 22:44:46,406 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 22:44:46,408 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 22:44:46,409 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 22:44:46,413 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 22:44:46,414 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 22:44:46,416 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 22:44:46,417 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 22:44:46,422 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 22:44:46,423 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 22:44:46,425 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 22:44:46,426 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 22:44:46,427 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 22:44:46,434 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 22:44:46,434 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 22:44:46,434 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 22:44:46,436 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 22:44:46,436 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 22:44:46,437 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 22:44:46,438 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 22:44:46,443 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 22:44:46,444 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 22:44:46,444 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 22:44:46,445 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 22:44:46,446 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 22:44:46,447 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 22:44:46,447 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 22:44:46,447 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 22:44:46,448 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 22:44:46,448 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 22:44:46,450 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 22:44:46,481 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 22:44:46,481 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 22:44:46,482 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 22:44:46,483 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 22:44:46,483 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 22:44:46,484 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 22:44:46,484 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 22:44:46,484 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 22:44:46,484 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 22:44:46,485 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 22:44:46,486 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 22:44:46,486 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 22:44:46,486 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 22:44:46,486 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 22:44:46,486 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 22:44:46,486 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 22:44:46,487 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 22:44:46,487 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 22:44:46,487 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 22:44:46,487 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 22:44:46,487 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 22:44:46,487 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 22:44:46,488 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 22:44:46,488 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 22:44:46,488 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 22:44:46,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 22:44:46,488 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 22:44:46,489 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 22:44:46,489 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 22:44:46,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 22:44:46,489 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 22:44:46,489 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 22:44:46,490 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 22:44:46,490 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 22:44:46,490 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c2ccb27a3ce50ce458a10a4aa8fbbd4d9c9d88060b8c7df98385ed8946afbfa Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 22:44:46,759 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 22:44:46,781 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 22:44:46,784 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 22:44:46,785 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 22:44:46,785 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 22:44:46,787 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-match-subst.wvr.c [2023-08-29 22:44:47,999 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 22:44:48,250 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 22:44:48,251 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-match-subst.wvr.c [2023-08-29 22:44:48,259 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ab7f364c/5d48b174a29441909f1caf953e8ae5ec/FLAGba2d5e071 [2023-08-29 22:44:48,269 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ab7f364c/5d48b174a29441909f1caf953e8ae5ec [2023-08-29 22:44:48,272 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 22:44:48,273 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 22:44:48,274 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 22:44:48,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 22:44:48,278 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 22:44:48,279 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:44:48" (1/1) ... [2023-08-29 22:44:48,280 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ade6a94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:44:48, skipping insertion in model container [2023-08-29 22:44:48,280 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:44:48" (1/1) ... [2023-08-29 22:44:48,284 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 22:44:48,298 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 22:44:48,458 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-match-subst.wvr.c[3017,3030] [2023-08-29 22:44:48,471 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 22:44:48,480 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 22:44:48,513 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-match-subst.wvr.c[3017,3030] [2023-08-29 22:44:48,521 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 22:44:48,538 INFO L208 MainTranslator]: Completed translation [2023-08-29 22:44:48,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:44:48 WrapperNode [2023-08-29 22:44:48,539 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 22:44:48,540 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 22:44:48,540 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 22:44:48,540 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 22:44:48,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:44:48" (1/1) ... [2023-08-29 22:44:48,562 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:44:48" (1/1) ... [2023-08-29 22:44:48,611 INFO L138 Inliner]: procedures = 23, calls = 34, calls flagged for inlining = 12, calls inlined = 22, statements flattened = 215 [2023-08-29 22:44:48,611 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 22:44:48,612 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 22:44:48,612 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 22:44:48,612 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 22:44:48,624 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:44:48" (1/1) ... [2023-08-29 22:44:48,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:44:48" (1/1) ... [2023-08-29 22:44:48,633 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:44:48" (1/1) ... [2023-08-29 22:44:48,650 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:44:48" (1/1) ... [2023-08-29 22:44:48,661 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:44:48" (1/1) ... [2023-08-29 22:44:48,664 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:44:48" (1/1) ... [2023-08-29 22:44:48,674 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:44:48" (1/1) ... [2023-08-29 22:44:48,680 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:44:48" (1/1) ... [2023-08-29 22:44:48,683 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 22:44:48,684 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 22:44:48,685 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 22:44:48,685 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 22:44:48,686 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:44:48" (1/1) ... [2023-08-29 22:44:48,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 22:44:48,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 22:44:48,714 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 22:44:48,749 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 22:44:48,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 22:44:48,759 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-29 22:44:48,759 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-29 22:44:48,759 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-29 22:44:48,759 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-29 22:44:48,760 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-29 22:44:48,760 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-29 22:44:48,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 22:44:48,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 22:44:48,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 22:44:48,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 22:44:48,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 22:44:48,761 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 22:44:48,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 22:44:48,763 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 22:44:48,918 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 22:44:48,920 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 22:44:49,301 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 22:44:49,317 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 22:44:49,332 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-29 22:44:49,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:44:49 BoogieIcfgContainer [2023-08-29 22:44:49,335 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 22:44:49,337 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 22:44:49,337 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 22:44:49,340 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 22:44:49,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 10:44:48" (1/3) ... [2023-08-29 22:44:49,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59b68c8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:44:49, skipping insertion in model container [2023-08-29 22:44:49,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:44:48" (2/3) ... [2023-08-29 22:44:49,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59b68c8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:44:49, skipping insertion in model container [2023-08-29 22:44:49,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:44:49" (3/3) ... [2023-08-29 22:44:49,343 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-match-subst.wvr.c [2023-08-29 22:44:49,364 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 22:44:49,365 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-08-29 22:44:49,365 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 22:44:49,493 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-29 22:44:49,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 267 places, 271 transitions, 566 flow [2023-08-29 22:44:49,653 INFO L130 PetriNetUnfolder]: 14/268 cut-off events. [2023-08-29 22:44:49,653 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-29 22:44:49,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281 conditions, 268 events. 14/268 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 386 event pairs, 0 based on Foata normal form. 0/240 useless extension candidates. Maximal degree in co-relation 180. Up to 2 conditions per place. [2023-08-29 22:44:49,661 INFO L82 GeneralOperation]: Start removeDead. Operand has 267 places, 271 transitions, 566 flow [2023-08-29 22:44:49,675 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 260 places, 264 transitions, 546 flow [2023-08-29 22:44:49,680 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 22:44:49,690 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 260 places, 264 transitions, 546 flow [2023-08-29 22:44:49,692 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 260 places, 264 transitions, 546 flow [2023-08-29 22:44:49,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 260 places, 264 transitions, 546 flow [2023-08-29 22:44:49,763 INFO L130 PetriNetUnfolder]: 14/264 cut-off events. [2023-08-29 22:44:49,763 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-29 22:44:49,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277 conditions, 264 events. 14/264 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 384 event pairs, 0 based on Foata normal form. 0/237 useless extension candidates. Maximal degree in co-relation 180. Up to 2 conditions per place. [2023-08-29 22:44:49,778 INFO L119 LiptonReduction]: Number of co-enabled transitions 18330 [2023-08-29 22:44:58,516 INFO L134 LiptonReduction]: Checked pairs total: 16655 [2023-08-29 22:44:58,516 INFO L136 LiptonReduction]: Total number of compositions: 321 [2023-08-29 22:44:58,529 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 22:44:58,535 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;@6b150301, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 22:44:58,535 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-08-29 22:44:58,537 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 22:44:58,537 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 22:44:58,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:44:58,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 22:44:58,538 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 22:44:58,543 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:44:58,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1095, now seen corresponding path program 1 times [2023-08-29 22:44:58,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:44:58,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176805636] [2023-08-29 22:44:58,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:44:58,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:44:58,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:44:58,625 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 22:44:58,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:44:58,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176805636] [2023-08-29 22:44:58,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176805636] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:44:58,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:44:58,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 22:44:58,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643172515] [2023-08-29 22:44:58,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:44:58,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 22:44:58,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:44:58,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 22:44:58,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 22:44:58,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 592 [2023-08-29 22:44:58,680 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 29 transitions, 76 flow. Second operand has 2 states, 2 states have (on average 250.5) internal successors, (501), 2 states have internal predecessors, (501), 0 states have call successors, (0), 0 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 22:44:58,680 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:44:58,680 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 592 [2023-08-29 22:44:58,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:44:58,771 INFO L130 PetriNetUnfolder]: 81/164 cut-off events. [2023-08-29 22:44:58,771 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2023-08-29 22:44:58,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354 conditions, 164 events. 81/164 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 467 event pairs, 81 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 244. Up to 165 conditions per place. [2023-08-29 22:44:58,775 INFO L137 encePairwiseOnDemand]: 589/592 looper letters, 26 selfloop transitions, 0 changer transitions 0/26 dead transitions. [2023-08-29 22:44:58,775 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 26 transitions, 122 flow [2023-08-29 22:44:58,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 22:44:58,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 22:44:58,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 529 transitions. [2023-08-29 22:44:58,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4467905405405405 [2023-08-29 22:44:58,798 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 529 transitions. [2023-08-29 22:44:58,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 529 transitions. [2023-08-29 22:44:58,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:44:58,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 529 transitions. [2023-08-29 22:44:58,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 264.5) internal successors, (529), 2 states have internal predecessors, (529), 0 states have call successors, (0), 0 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 22:44:58,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 592.0) internal successors, (1776), 3 states have internal predecessors, (1776), 0 states have call successors, (0), 0 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 22:44:58,817 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 592.0) internal successors, (1776), 3 states have internal predecessors, (1776), 0 states have call successors, (0), 0 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 22:44:58,819 INFO L175 Difference]: Start difference. First operand has 39 places, 29 transitions, 76 flow. Second operand 2 states and 529 transitions. [2023-08-29 22:44:58,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 26 transitions, 122 flow [2023-08-29 22:44:58,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 26 transitions, 110 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-29 22:44:58,825 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 58 flow [2023-08-29 22:44:58,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=592, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=58, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2023-08-29 22:44:58,831 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -8 predicate places. [2023-08-29 22:44:58,831 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 58 flow [2023-08-29 22:44:58,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 250.5) internal successors, (501), 2 states have internal predecessors, (501), 0 states have call successors, (0), 0 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 22:44:58,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:44:58,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 22:44:58,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 22:44:58,833 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 22:44:58,834 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:44:58,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1078175, now seen corresponding path program 1 times [2023-08-29 22:44:58,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:44:58,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013530682] [2023-08-29 22:44:58,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:44:58,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:44:58,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:44:59,065 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 22:44:59,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:44:59,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013530682] [2023-08-29 22:44:59,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013530682] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:44:59,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:44:59,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 22:44:59,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944032846] [2023-08-29 22:44:59,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:44:59,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 22:44:59,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:44:59,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 22:44:59,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 22:44:59,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 592 [2023-08-29 22:44:59,116 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 241.0) internal successors, (723), 3 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:59,116 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:44:59,117 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 592 [2023-08-29 22:44:59,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:44:59,183 INFO L130 PetriNetUnfolder]: 76/153 cut-off events. [2023-08-29 22:44:59,184 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 22:44:59,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 153 events. 76/153 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 425 event pairs, 76 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 313. Up to 153 conditions per place. [2023-08-29 22:44:59,185 INFO L137 encePairwiseOnDemand]: 589/592 looper letters, 23 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2023-08-29 22:44:59,185 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 24 transitions, 102 flow [2023-08-29 22:44:59,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 22:44:59,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 22:44:59,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 746 transitions. [2023-08-29 22:44:59,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42004504504504503 [2023-08-29 22:44:59,188 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 746 transitions. [2023-08-29 22:44:59,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 746 transitions. [2023-08-29 22:44:59,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:44:59,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 746 transitions. [2023-08-29 22:44:59,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 248.66666666666666) internal successors, (746), 3 states have internal predecessors, (746), 0 states have call successors, (0), 0 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 22:44:59,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 592.0) internal successors, (2368), 4 states have internal predecessors, (2368), 0 states have call successors, (0), 0 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 22:44:59,194 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 592.0) internal successors, (2368), 4 states have internal predecessors, (2368), 0 states have call successors, (0), 0 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 22:44:59,195 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 58 flow. Second operand 3 states and 746 transitions. [2023-08-29 22:44:59,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 24 transitions, 102 flow [2023-08-29 22:44:59,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 24 transitions, 102 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 22:44:59,196 INFO L231 Difference]: Finished difference. Result has 31 places, 24 transitions, 56 flow [2023-08-29 22:44:59,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=592, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=31, PETRI_TRANSITIONS=24} [2023-08-29 22:44:59,197 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -8 predicate places. [2023-08-29 22:44:59,197 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 24 transitions, 56 flow [2023-08-29 22:44:59,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 241.0) internal successors, (723), 3 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:59,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:44:59,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 22:44:59,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 22:44:59,198 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 22:44:59,199 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:44:59,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1078174, now seen corresponding path program 1 times [2023-08-29 22:44:59,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:44:59,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866674358] [2023-08-29 22:44:59,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:44:59,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:44:59,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:44:59,401 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 22:44:59,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:44:59,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866674358] [2023-08-29 22:44:59,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866674358] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:44:59,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:44:59,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 22:44:59,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267363875] [2023-08-29 22:44:59,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:44:59,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 22:44:59,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:44:59,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 22:44:59,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 22:44:59,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 592 [2023-08-29 22:44:59,446 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 246.0) internal successors, (738), 3 states have internal predecessors, (738), 0 states have call successors, (0), 0 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 22:44:59,446 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:44:59,446 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 592 [2023-08-29 22:44:59,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:44:59,500 INFO L130 PetriNetUnfolder]: 71/142 cut-off events. [2023-08-29 22:44:59,501 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 22:44:59,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296 conditions, 142 events. 71/142 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 385 event pairs, 71 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 292. Up to 142 conditions per place. [2023-08-29 22:44:59,502 INFO L137 encePairwiseOnDemand]: 589/592 looper letters, 21 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2023-08-29 22:44:59,502 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 22 transitions, 96 flow [2023-08-29 22:44:59,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 22:44:59,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 22:44:59,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 759 transitions. [2023-08-29 22:44:59,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42736486486486486 [2023-08-29 22:44:59,505 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 759 transitions. [2023-08-29 22:44:59,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 759 transitions. [2023-08-29 22:44:59,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:44:59,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 759 transitions. [2023-08-29 22:44:59,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 253.0) internal successors, (759), 3 states have internal predecessors, (759), 0 states have call successors, (0), 0 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 22:44:59,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 592.0) internal successors, (2368), 4 states have internal predecessors, (2368), 0 states have call successors, (0), 0 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 22:44:59,511 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 592.0) internal successors, (2368), 4 states have internal predecessors, (2368), 0 states have call successors, (0), 0 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 22:44:59,511 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 56 flow. Second operand 3 states and 759 transitions. [2023-08-29 22:44:59,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 22 transitions, 96 flow [2023-08-29 22:44:59,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 22 transitions, 95 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 22:44:59,512 INFO L231 Difference]: Finished difference. Result has 30 places, 22 transitions, 53 flow [2023-08-29 22:44:59,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=592, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=30, PETRI_TRANSITIONS=22} [2023-08-29 22:44:59,513 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -9 predicate places. [2023-08-29 22:44:59,514 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 53 flow [2023-08-29 22:44:59,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 246.0) internal successors, (738), 3 states have internal predecessors, (738), 0 states have call successors, (0), 0 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 22:44:59,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:44:59,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 22:44:59,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 22:44:59,515 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 22:44:59,515 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:44:59,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1036151252, now seen corresponding path program 1 times [2023-08-29 22:44:59,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:44:59,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826306469] [2023-08-29 22:44:59,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:44:59,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:44:59,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:44:59,570 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 22:44:59,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:44:59,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826306469] [2023-08-29 22:44:59,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826306469] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:44:59,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:44:59,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 22:44:59,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220041000] [2023-08-29 22:44:59,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:44:59,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 22:44:59,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:44:59,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 22:44:59,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 22:44:59,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 592 [2023-08-29 22:44:59,606 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 53 flow. Second operand has 3 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 0 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 22:44:59,606 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:44:59,606 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 592 [2023-08-29 22:44:59,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:44:59,649 INFO L130 PetriNetUnfolder]: 66/131 cut-off events. [2023-08-29 22:44:59,649 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 22:44:59,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 131 events. 66/131 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 340 event pairs, 66 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 271. Up to 131 conditions per place. [2023-08-29 22:44:59,650 INFO L137 encePairwiseOnDemand]: 589/592 looper letters, 19 selfloop transitions, 1 changer transitions 0/20 dead transitions. [2023-08-29 22:44:59,650 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 20 transitions, 89 flow [2023-08-29 22:44:59,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 22:44:59,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 22:44:59,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 745 transitions. [2023-08-29 22:44:59,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.419481981981982 [2023-08-29 22:44:59,653 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 745 transitions. [2023-08-29 22:44:59,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 745 transitions. [2023-08-29 22:44:59,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:44:59,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 745 transitions. [2023-08-29 22:44:59,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 248.33333333333334) internal successors, (745), 3 states have internal predecessors, (745), 0 states have call successors, (0), 0 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 22:44:59,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 592.0) internal successors, (2368), 4 states have internal predecessors, (2368), 0 states have call successors, (0), 0 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 22:44:59,659 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 592.0) internal successors, (2368), 4 states have internal predecessors, (2368), 0 states have call successors, (0), 0 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 22:44:59,660 INFO L175 Difference]: Start difference. First operand has 30 places, 22 transitions, 53 flow. Second operand 3 states and 745 transitions. [2023-08-29 22:44:59,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 20 transitions, 89 flow [2023-08-29 22:44:59,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 20 transitions, 88 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 22:44:59,661 INFO L231 Difference]: Finished difference. Result has 29 places, 20 transitions, 50 flow [2023-08-29 22:44:59,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=592, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=29, PETRI_TRANSITIONS=20} [2023-08-29 22:44:59,662 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -10 predicate places. [2023-08-29 22:44:59,662 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 20 transitions, 50 flow [2023-08-29 22:44:59,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 0 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 22:44:59,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:44:59,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 22:44:59,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 22:44:59,663 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 22:44:59,663 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:44:59,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1036151251, now seen corresponding path program 1 times [2023-08-29 22:44:59,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:44:59,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478933473] [2023-08-29 22:44:59,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:44:59,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:44:59,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:44:59,695 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 22:44:59,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:44:59,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478933473] [2023-08-29 22:44:59,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478933473] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:44:59,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:44:59,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 22:44:59,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679831468] [2023-08-29 22:44:59,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:44:59,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 22:44:59,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:44:59,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 22:44:59,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 22:44:59,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 592 [2023-08-29 22:44:59,747 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 20 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 241.66666666666666) internal successors, (725), 3 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:59,747 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:44:59,747 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 592 [2023-08-29 22:44:59,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:44:59,790 INFO L130 PetriNetUnfolder]: 61/120 cut-off events. [2023-08-29 22:44:59,791 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 22:44:59,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 120 events. 61/120 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 297 event pairs, 61 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 250. Up to 120 conditions per place. [2023-08-29 22:44:59,792 INFO L137 encePairwiseOnDemand]: 589/592 looper letters, 17 selfloop transitions, 1 changer transitions 0/18 dead transitions. [2023-08-29 22:44:59,792 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 18 transitions, 82 flow [2023-08-29 22:44:59,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 22:44:59,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 22:44:59,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 740 transitions. [2023-08-29 22:44:59,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2023-08-29 22:44:59,794 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 740 transitions. [2023-08-29 22:44:59,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 740 transitions. [2023-08-29 22:44:59,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:44:59,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 740 transitions. [2023-08-29 22:44:59,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 246.66666666666666) internal successors, (740), 3 states have internal predecessors, (740), 0 states have call successors, (0), 0 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 22:44:59,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 592.0) internal successors, (2368), 4 states have internal predecessors, (2368), 0 states have call successors, (0), 0 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 22:44:59,800 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 592.0) internal successors, (2368), 4 states have internal predecessors, (2368), 0 states have call successors, (0), 0 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 22:44:59,801 INFO L175 Difference]: Start difference. First operand has 29 places, 20 transitions, 50 flow. Second operand 3 states and 740 transitions. [2023-08-29 22:44:59,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 18 transitions, 82 flow [2023-08-29 22:44:59,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 18 transitions, 81 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 22:44:59,802 INFO L231 Difference]: Finished difference. Result has 28 places, 18 transitions, 47 flow [2023-08-29 22:44:59,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=592, PETRI_DIFFERENCE_MINUEND_FLOW=45, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=47, PETRI_PLACES=28, PETRI_TRANSITIONS=18} [2023-08-29 22:44:59,803 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -11 predicate places. [2023-08-29 22:44:59,803 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 18 transitions, 47 flow [2023-08-29 22:44:59,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 241.66666666666666) internal successors, (725), 3 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:59,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:44:59,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:44:59,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 22:44:59,804 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 22:44:59,804 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:44:59,805 INFO L85 PathProgramCache]: Analyzing trace with hash -691034558, now seen corresponding path program 1 times [2023-08-29 22:44:59,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:44:59,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162125155] [2023-08-29 22:44:59,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:44:59,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:44:59,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:44:59,877 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 22:44:59,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:44:59,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162125155] [2023-08-29 22:44:59,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162125155] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:44:59,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:44:59,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 22:44:59,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279115386] [2023-08-29 22:44:59,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:44:59,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 22:44:59,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:44:59,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 22:44:59,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-29 22:44:59,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 592 [2023-08-29 22:44:59,969 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 18 transitions, 47 flow. Second operand has 5 states, 5 states have (on average 233.4) internal successors, (1167), 5 states have internal predecessors, (1167), 0 states have call successors, (0), 0 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 22:44:59,969 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:44:59,969 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 592 [2023-08-29 22:44:59,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:45:00,005 INFO L130 PetriNetUnfolder]: 49/100 cut-off events. [2023-08-29 22:45:00,005 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 22:45:00,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 100 events. 49/100 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 220 event pairs, 49 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 211. Up to 100 conditions per place. [2023-08-29 22:45:00,007 INFO L137 encePairwiseOnDemand]: 590/592 looper letters, 16 selfloop transitions, 1 changer transitions 0/17 dead transitions. [2023-08-29 22:45:00,007 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 17 transitions, 79 flow [2023-08-29 22:45:00,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 22:45:00,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 22:45:00,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 714 transitions. [2023-08-29 22:45:00,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40202702702702703 [2023-08-29 22:45:00,010 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 714 transitions. [2023-08-29 22:45:00,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 714 transitions. [2023-08-29 22:45:00,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:45:00,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 714 transitions. [2023-08-29 22:45:00,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 238.0) internal successors, (714), 3 states have internal predecessors, (714), 0 states have call successors, (0), 0 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 22:45:00,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 592.0) internal successors, (2368), 4 states have internal predecessors, (2368), 0 states have call successors, (0), 0 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 22:45:00,016 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 592.0) internal successors, (2368), 4 states have internal predecessors, (2368), 0 states have call successors, (0), 0 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 22:45:00,017 INFO L175 Difference]: Start difference. First operand has 28 places, 18 transitions, 47 flow. Second operand 3 states and 714 transitions. [2023-08-29 22:45:00,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 17 transitions, 79 flow [2023-08-29 22:45:00,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 17 transitions, 78 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 22:45:00,018 INFO L231 Difference]: Finished difference. Result has 28 places, 17 transitions, 46 flow [2023-08-29 22:45:00,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=592, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=28, PETRI_TRANSITIONS=17} [2023-08-29 22:45:00,025 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -11 predicate places. [2023-08-29 22:45:00,025 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 17 transitions, 46 flow [2023-08-29 22:45:00,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 233.4) internal successors, (1167), 5 states have internal predecessors, (1167), 0 states have call successors, (0), 0 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 22:45:00,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:45:00,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:45:00,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 22:45:00,026 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 22:45:00,026 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:45:00,026 INFO L85 PathProgramCache]: Analyzing trace with hash -691034557, now seen corresponding path program 1 times [2023-08-29 22:45:00,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:45:00,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266736225] [2023-08-29 22:45:00,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:45:00,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:45:00,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:45:00,062 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 22:45:00,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:45:00,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266736225] [2023-08-29 22:45:00,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266736225] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:45:00,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:45:00,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 22:45:00,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136344668] [2023-08-29 22:45:00,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:45:00,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 22:45:00,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:45:00,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 22:45:00,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 22:45:00,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 592 [2023-08-29 22:45:00,095 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 17 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 243.33333333333334) internal successors, (730), 3 states have internal predecessors, (730), 0 states have call successors, (0), 0 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 22:45:00,095 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:45:00,095 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 592 [2023-08-29 22:45:00,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:45:00,126 INFO L130 PetriNetUnfolder]: 37/80 cut-off events. [2023-08-29 22:45:00,126 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 22:45:00,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 80 events. 37/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 150 event pairs, 37 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 172. Up to 80 conditions per place. [2023-08-29 22:45:00,127 INFO L137 encePairwiseOnDemand]: 590/592 looper letters, 15 selfloop transitions, 1 changer transitions 0/16 dead transitions. [2023-08-29 22:45:00,127 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 16 transitions, 76 flow [2023-08-29 22:45:00,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 22:45:00,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 22:45:00,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 740 transitions. [2023-08-29 22:45:00,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2023-08-29 22:45:00,129 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 740 transitions. [2023-08-29 22:45:00,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 740 transitions. [2023-08-29 22:45:00,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:45:00,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 740 transitions. [2023-08-29 22:45:00,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 246.66666666666666) internal successors, (740), 3 states have internal predecessors, (740), 0 states have call successors, (0), 0 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 22:45:00,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 592.0) internal successors, (2368), 4 states have internal predecessors, (2368), 0 states have call successors, (0), 0 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 22:45:00,134 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 592.0) internal successors, (2368), 4 states have internal predecessors, (2368), 0 states have call successors, (0), 0 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 22:45:00,134 INFO L175 Difference]: Start difference. First operand has 28 places, 17 transitions, 46 flow. Second operand 3 states and 740 transitions. [2023-08-29 22:45:00,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 16 transitions, 76 flow [2023-08-29 22:45:00,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 16 transitions, 75 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 22:45:00,135 INFO L231 Difference]: Finished difference. Result has 28 places, 16 transitions, 45 flow [2023-08-29 22:45:00,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=592, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=45, PETRI_PLACES=28, PETRI_TRANSITIONS=16} [2023-08-29 22:45:00,135 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -11 predicate places. [2023-08-29 22:45:00,136 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 16 transitions, 45 flow [2023-08-29 22:45:00,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 243.33333333333334) internal successors, (730), 3 states have internal predecessors, (730), 0 states have call successors, (0), 0 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 22:45:00,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:45:00,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:45:00,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 22:45:00,137 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 22:45:00,137 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:45:00,137 INFO L85 PathProgramCache]: Analyzing trace with hash 480433094, now seen corresponding path program 1 times [2023-08-29 22:45:00,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:45:00,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102544690] [2023-08-29 22:45:00,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:45:00,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:45:00,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:45:01,311 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 22:45:01,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:45:01,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102544690] [2023-08-29 22:45:01,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102544690] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:45:01,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:45:01,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 22:45:01,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061213461] [2023-08-29 22:45:01,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:45:01,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 22:45:01,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:45:01,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 22:45:01,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 22:45:01,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 592 [2023-08-29 22:45:01,456 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 16 transitions, 45 flow. Second operand has 5 states, 5 states have (on average 229.2) internal successors, (1146), 5 states have internal predecessors, (1146), 0 states have call successors, (0), 0 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 22:45:01,456 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:45:01,456 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 592 [2023-08-29 22:45:01,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:45:01,673 INFO L130 PetriNetUnfolder]: 40/106 cut-off events. [2023-08-29 22:45:01,673 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 22:45:01,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 106 events. 40/106 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 319 event pairs, 6 based on Foata normal form. 1/107 useless extension candidates. Maximal degree in co-relation 226. Up to 48 conditions per place. [2023-08-29 22:45:01,674 INFO L137 encePairwiseOnDemand]: 587/592 looper letters, 30 selfloop transitions, 6 changer transitions 9/45 dead transitions. [2023-08-29 22:45:01,674 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 45 transitions, 203 flow [2023-08-29 22:45:01,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 22:45:01,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 22:45:01,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1402 transitions. [2023-08-29 22:45:01,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3947072072072072 [2023-08-29 22:45:01,681 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1402 transitions. [2023-08-29 22:45:01,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1402 transitions. [2023-08-29 22:45:01,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:45:01,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1402 transitions. [2023-08-29 22:45:01,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 233.66666666666666) internal successors, (1402), 6 states have internal predecessors, (1402), 0 states have call successors, (0), 0 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 22:45:01,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 592.0) internal successors, (4144), 7 states have internal predecessors, (4144), 0 states have call successors, (0), 0 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 22:45:01,690 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 592.0) internal successors, (4144), 7 states have internal predecessors, (4144), 0 states have call successors, (0), 0 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 22:45:01,690 INFO L175 Difference]: Start difference. First operand has 28 places, 16 transitions, 45 flow. Second operand 6 states and 1402 transitions. [2023-08-29 22:45:01,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 45 transitions, 203 flow [2023-08-29 22:45:01,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 45 transitions, 202 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 22:45:01,692 INFO L231 Difference]: Finished difference. Result has 35 places, 20 transitions, 77 flow [2023-08-29 22:45:01,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=592, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=77, PETRI_PLACES=35, PETRI_TRANSITIONS=20} [2023-08-29 22:45:01,692 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -4 predicate places. [2023-08-29 22:45:01,693 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 20 transitions, 77 flow [2023-08-29 22:45:01,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 229.2) internal successors, (1146), 5 states have internal predecessors, (1146), 0 states have call successors, (0), 0 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 22:45:01,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:45:01,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:45:01,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 22:45:01,694 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 22:45:01,694 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:45:01,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1584453994, now seen corresponding path program 2 times [2023-08-29 22:45:01,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:45:01,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744136920] [2023-08-29 22:45:01,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:45:01,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:45:01,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:45:02,760 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 22:45:02,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:45:02,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744136920] [2023-08-29 22:45:02,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744136920] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:45:02,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:45:02,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 22:45:02,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251679764] [2023-08-29 22:45:02,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:45:02,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 22:45:02,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:45:02,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 22:45:02,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 22:45:02,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 592 [2023-08-29 22:45:02,857 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 20 transitions, 77 flow. Second operand has 5 states, 5 states have (on average 229.2) internal successors, (1146), 5 states have internal predecessors, (1146), 0 states have call successors, (0), 0 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 22:45:02,857 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:45:02,857 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 592 [2023-08-29 22:45:02,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:45:03,066 INFO L130 PetriNetUnfolder]: 36/114 cut-off events. [2023-08-29 22:45:03,066 INFO L131 PetriNetUnfolder]: For 67/67 co-relation queries the response was YES. [2023-08-29 22:45:03,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 114 events. 36/114 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 402 event pairs, 4 based on Foata normal form. 1/115 useless extension candidates. Maximal degree in co-relation 318. Up to 62 conditions per place. [2023-08-29 22:45:03,067 INFO L137 encePairwiseOnDemand]: 587/592 looper letters, 28 selfloop transitions, 5 changer transitions 10/43 dead transitions. [2023-08-29 22:45:03,067 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 43 transitions, 227 flow [2023-08-29 22:45:03,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 22:45:03,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 22:45:03,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1400 transitions. [2023-08-29 22:45:03,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39414414414414417 [2023-08-29 22:45:03,072 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1400 transitions. [2023-08-29 22:45:03,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1400 transitions. [2023-08-29 22:45:03,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:45:03,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1400 transitions. [2023-08-29 22:45:03,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 233.33333333333334) internal successors, (1400), 6 states have internal predecessors, (1400), 0 states have call successors, (0), 0 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 22:45:03,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 592.0) internal successors, (4144), 7 states have internal predecessors, (4144), 0 states have call successors, (0), 0 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 22:45:03,080 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 592.0) internal successors, (4144), 7 states have internal predecessors, (4144), 0 states have call successors, (0), 0 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 22:45:03,080 INFO L175 Difference]: Start difference. First operand has 35 places, 20 transitions, 77 flow. Second operand 6 states and 1400 transitions. [2023-08-29 22:45:03,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 43 transitions, 227 flow [2023-08-29 22:45:03,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 43 transitions, 223 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-29 22:45:03,083 INFO L231 Difference]: Finished difference. Result has 41 places, 20 transitions, 95 flow [2023-08-29 22:45:03,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=592, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=95, PETRI_PLACES=41, PETRI_TRANSITIONS=20} [2023-08-29 22:45:03,083 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2023-08-29 22:45:03,083 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 20 transitions, 95 flow [2023-08-29 22:45:03,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 229.2) internal successors, (1146), 5 states have internal predecessors, (1146), 0 states have call successors, (0), 0 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 22:45:03,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:45:03,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:45:03,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 22:45:03,085 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 22:45:03,085 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:45:03,085 INFO L85 PathProgramCache]: Analyzing trace with hash 541952938, now seen corresponding path program 3 times [2023-08-29 22:45:03,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:45:03,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739046932] [2023-08-29 22:45:03,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:45:03,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:45:03,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:45:04,053 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 22:45:04,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:45:04,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739046932] [2023-08-29 22:45:04,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739046932] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:45:04,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:45:04,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 22:45:04,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606352705] [2023-08-29 22:45:04,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:45:04,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 22:45:04,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:45:04,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 22:45:04,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 22:45:04,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 592 [2023-08-29 22:45:04,169 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 20 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 229.2) internal successors, (1146), 5 states have internal predecessors, (1146), 0 states have call successors, (0), 0 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 22:45:04,169 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:45:04,169 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 592 [2023-08-29 22:45:04,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:45:04,434 INFO L130 PetriNetUnfolder]: 20/70 cut-off events. [2023-08-29 22:45:04,434 INFO L131 PetriNetUnfolder]: For 105/105 co-relation queries the response was YES. [2023-08-29 22:45:04,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 70 events. 20/70 cut-off events. For 105/105 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 193 event pairs, 0 based on Foata normal form. 1/71 useless extension candidates. Maximal degree in co-relation 229. Up to 23 conditions per place. [2023-08-29 22:45:04,435 INFO L137 encePairwiseOnDemand]: 587/592 looper letters, 27 selfloop transitions, 6 changer transitions 9/42 dead transitions. [2023-08-29 22:45:04,435 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 42 transitions, 239 flow [2023-08-29 22:45:04,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 22:45:04,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 22:45:04,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1398 transitions. [2023-08-29 22:45:04,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935810810810811 [2023-08-29 22:45:04,441 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1398 transitions. [2023-08-29 22:45:04,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1398 transitions. [2023-08-29 22:45:04,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:45:04,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1398 transitions. [2023-08-29 22:45:04,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 233.0) internal successors, (1398), 6 states have internal predecessors, (1398), 0 states have call successors, (0), 0 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 22:45:04,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 592.0) internal successors, (4144), 7 states have internal predecessors, (4144), 0 states have call successors, (0), 0 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 22:45:04,451 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 592.0) internal successors, (4144), 7 states have internal predecessors, (4144), 0 states have call successors, (0), 0 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 22:45:04,451 INFO L175 Difference]: Start difference. First operand has 41 places, 20 transitions, 95 flow. Second operand 6 states and 1398 transitions. [2023-08-29 22:45:04,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 42 transitions, 239 flow [2023-08-29 22:45:04,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 42 transitions, 217 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-08-29 22:45:04,454 INFO L231 Difference]: Finished difference. Result has 42 places, 20 transitions, 97 flow [2023-08-29 22:45:04,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=592, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=97, PETRI_PLACES=42, PETRI_TRANSITIONS=20} [2023-08-29 22:45:04,455 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 3 predicate places. [2023-08-29 22:45:04,455 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 20 transitions, 97 flow [2023-08-29 22:45:04,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 229.2) internal successors, (1146), 5 states have internal predecessors, (1146), 0 states have call successors, (0), 0 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 22:45:04,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:45:04,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:45:04,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-29 22:45:04,456 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 22:45:04,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:45:04,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1887480722, now seen corresponding path program 4 times [2023-08-29 22:45:04,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:45:04,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200098242] [2023-08-29 22:45:04,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:45:04,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:45:04,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:45:05,319 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 22:45:05,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:45:05,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200098242] [2023-08-29 22:45:05,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200098242] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:45:05,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:45:05,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 22:45:05,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130610214] [2023-08-29 22:45:05,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:45:05,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 22:45:05,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:45:05,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 22:45:05,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 22:45:05,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 592 [2023-08-29 22:45:05,415 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 20 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 229.2) internal successors, (1146), 5 states have internal predecessors, (1146), 0 states have call successors, (0), 0 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 22:45:05,415 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:45:05,415 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 592 [2023-08-29 22:45:05,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:45:05,663 INFO L130 PetriNetUnfolder]: 15/67 cut-off events. [2023-08-29 22:45:05,663 INFO L131 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2023-08-29 22:45:05,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 67 events. 15/67 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 179 event pairs, 0 based on Foata normal form. 1/68 useless extension candidates. Maximal degree in co-relation 221. Up to 41 conditions per place. [2023-08-29 22:45:05,664 INFO L137 encePairwiseOnDemand]: 587/592 looper letters, 18 selfloop transitions, 4 changer transitions 12/34 dead transitions. [2023-08-29 22:45:05,664 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 34 transitions, 205 flow [2023-08-29 22:45:05,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 22:45:05,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 22:45:05,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1390 transitions. [2023-08-29 22:45:05,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39132882882882886 [2023-08-29 22:45:05,668 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1390 transitions. [2023-08-29 22:45:05,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1390 transitions. [2023-08-29 22:45:05,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:45:05,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1390 transitions. [2023-08-29 22:45:05,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 231.66666666666666) internal successors, (1390), 6 states have internal predecessors, (1390), 0 states have call successors, (0), 0 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 22:45:05,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 592.0) internal successors, (4144), 7 states have internal predecessors, (4144), 0 states have call successors, (0), 0 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 22:45:05,678 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 592.0) internal successors, (4144), 7 states have internal predecessors, (4144), 0 states have call successors, (0), 0 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 22:45:05,678 INFO L175 Difference]: Start difference. First operand has 42 places, 20 transitions, 97 flow. Second operand 6 states and 1390 transitions. [2023-08-29 22:45:05,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 34 transitions, 205 flow [2023-08-29 22:45:05,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 34 transitions, 200 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-29 22:45:05,680 INFO L231 Difference]: Finished difference. Result has 45 places, 18 transitions, 91 flow [2023-08-29 22:45:05,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=592, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=91, PETRI_PLACES=45, PETRI_TRANSITIONS=18} [2023-08-29 22:45:05,680 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 6 predicate places. [2023-08-29 22:45:05,681 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 18 transitions, 91 flow [2023-08-29 22:45:05,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 229.2) internal successors, (1146), 5 states have internal predecessors, (1146), 0 states have call successors, (0), 0 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 22:45:05,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:45:05,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:45:05,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-29 22:45:05,682 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 22:45:05,682 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:45:05,682 INFO L85 PathProgramCache]: Analyzing trace with hash 173379080, now seen corresponding path program 5 times [2023-08-29 22:45:05,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:45:05,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366217709] [2023-08-29 22:45:05,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:45:05,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:45:05,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:45:06,659 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 22:45:06,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:45:06,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366217709] [2023-08-29 22:45:06,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366217709] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:45:06,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:45:06,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 22:45:06,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103526897] [2023-08-29 22:45:06,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:45:06,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 22:45:06,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:45:06,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 22:45:06,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 22:45:06,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 592 [2023-08-29 22:45:06,774 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 18 transitions, 91 flow. Second operand has 5 states, 5 states have (on average 229.2) internal successors, (1146), 5 states have internal predecessors, (1146), 0 states have call successors, (0), 0 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 22:45:06,774 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:45:06,774 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 592 [2023-08-29 22:45:06,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:45:07,227 INFO L130 PetriNetUnfolder]: 7/37 cut-off events. [2023-08-29 22:45:07,227 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-08-29 22:45:07,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 37 events. 7/37 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 51 event pairs, 0 based on Foata normal form. 1/38 useless extension candidates. Maximal degree in co-relation 128. Up to 14 conditions per place. [2023-08-29 22:45:07,228 INFO L137 encePairwiseOnDemand]: 587/592 looper letters, 17 selfloop transitions, 3 changer transitions 8/28 dead transitions. [2023-08-29 22:45:07,228 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 28 transitions, 171 flow [2023-08-29 22:45:07,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 22:45:07,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 22:45:07,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1384 transitions. [2023-08-29 22:45:07,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38963963963963966 [2023-08-29 22:45:07,232 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1384 transitions. [2023-08-29 22:45:07,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1384 transitions. [2023-08-29 22:45:07,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:45:07,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1384 transitions. [2023-08-29 22:45:07,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 230.66666666666666) internal successors, (1384), 6 states have internal predecessors, (1384), 0 states have call successors, (0), 0 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 22:45:07,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 592.0) internal successors, (4144), 7 states have internal predecessors, (4144), 0 states have call successors, (0), 0 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 22:45:07,242 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 592.0) internal successors, (4144), 7 states have internal predecessors, (4144), 0 states have call successors, (0), 0 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 22:45:07,243 INFO L175 Difference]: Start difference. First operand has 45 places, 18 transitions, 91 flow. Second operand 6 states and 1384 transitions. [2023-08-29 22:45:07,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 28 transitions, 171 flow [2023-08-29 22:45:07,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 28 transitions, 152 flow, removed 2 selfloop flow, removed 8 redundant places. [2023-08-29 22:45:07,244 INFO L231 Difference]: Finished difference. Result has 41 places, 16 transitions, 65 flow [2023-08-29 22:45:07,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=592, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=65, PETRI_PLACES=41, PETRI_TRANSITIONS=16} [2023-08-29 22:45:07,245 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2023-08-29 22:45:07,245 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 16 transitions, 65 flow [2023-08-29 22:45:07,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 229.2) internal successors, (1146), 5 states have internal predecessors, (1146), 0 states have call successors, (0), 0 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 22:45:07,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:45:07,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:45:07,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-29 22:45:07,246 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 22:45:07,246 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:45:07,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1965810804, now seen corresponding path program 6 times [2023-08-29 22:45:07,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:45:07,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324269411] [2023-08-29 22:45:07,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:45:07,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:45:07,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:45:08,092 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 22:45:08,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:45:08,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324269411] [2023-08-29 22:45:08,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324269411] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:45:08,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:45:08,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 22:45:08,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162616299] [2023-08-29 22:45:08,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:45:08,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 22:45:08,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:45:08,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 22:45:08,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 22:45:08,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 592 [2023-08-29 22:45:08,206 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 16 transitions, 65 flow. Second operand has 5 states, 5 states have (on average 229.2) internal successors, (1146), 5 states have internal predecessors, (1146), 0 states have call successors, (0), 0 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 22:45:08,206 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:45:08,206 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 592 [2023-08-29 22:45:08,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:45:08,411 INFO L130 PetriNetUnfolder]: 5/25 cut-off events. [2023-08-29 22:45:08,411 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-29 22:45:08,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 25 events. 5/25 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 17 event pairs, 0 based on Foata normal form. 1/26 useless extension candidates. Maximal degree in co-relation 86. Up to 10 conditions per place. [2023-08-29 22:45:08,411 INFO L137 encePairwiseOnDemand]: 587/592 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2023-08-29 22:45:08,412 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 20 transitions, 112 flow [2023-08-29 22:45:08,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 22:45:08,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 22:45:08,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1377 transitions. [2023-08-29 22:45:08,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3876689189189189 [2023-08-29 22:45:08,416 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1377 transitions. [2023-08-29 22:45:08,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1377 transitions. [2023-08-29 22:45:08,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:45:08,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1377 transitions. [2023-08-29 22:45:08,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 229.5) internal successors, (1377), 6 states have internal predecessors, (1377), 0 states have call successors, (0), 0 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 22:45:08,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 592.0) internal successors, (4144), 7 states have internal predecessors, (4144), 0 states have call successors, (0), 0 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 22:45:08,424 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 592.0) internal successors, (4144), 7 states have internal predecessors, (4144), 0 states have call successors, (0), 0 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 22:45:08,424 INFO L175 Difference]: Start difference. First operand has 41 places, 16 transitions, 65 flow. Second operand 6 states and 1377 transitions. [2023-08-29 22:45:08,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 20 transitions, 112 flow [2023-08-29 22:45:08,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 20 transitions, 99 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-08-29 22:45:08,425 INFO L231 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2023-08-29 22:45:08,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=592, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2023-08-29 22:45:08,426 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -2 predicate places. [2023-08-29 22:45:08,426 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 0 transitions, 0 flow [2023-08-29 22:45:08,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 229.2) internal successors, (1146), 5 states have internal predecessors, (1146), 0 states have call successors, (0), 0 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 22:45:08,429 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 17 remaining) [2023-08-29 22:45:08,430 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 17 remaining) [2023-08-29 22:45:08,430 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 17 remaining) [2023-08-29 22:45:08,430 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 17 remaining) [2023-08-29 22:45:08,431 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 17 remaining) [2023-08-29 22:45:08,431 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 17 remaining) [2023-08-29 22:45:08,431 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 17 remaining) [2023-08-29 22:45:08,431 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 17 remaining) [2023-08-29 22:45:08,432 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 17 remaining) [2023-08-29 22:45:08,432 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 17 remaining) [2023-08-29 22:45:08,432 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 17 remaining) [2023-08-29 22:45:08,432 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 17 remaining) [2023-08-29 22:45:08,432 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (4 of 17 remaining) [2023-08-29 22:45:08,433 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK (3 of 17 remaining) [2023-08-29 22:45:08,433 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 17 remaining) [2023-08-29 22:45:08,433 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 17 remaining) [2023-08-29 22:45:08,433 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 17 remaining) [2023-08-29 22:45:08,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-29 22:45:08,434 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:45:08,436 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 22:45:08,436 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 22:45:08,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 10:45:08 BasicIcfg [2023-08-29 22:45:08,439 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 22:45:08,439 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 22:45:08,439 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 22:45:08,439 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 22:45:08,440 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:44:49" (3/4) ... [2023-08-29 22:45:08,442 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-29 22:45:08,447 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-29 22:45:08,447 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-29 22:45:08,447 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-08-29 22:45:08,451 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2023-08-29 22:45:08,452 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-29 22:45:08,452 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-29 22:45:08,452 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-29 22:45:08,485 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-29 22:45:08,485 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 22:45:08,485 INFO L158 Benchmark]: Toolchain (without parser) took 20212.60ms. Allocated memory was 69.2MB in the beginning and 337.6MB in the end (delta: 268.4MB). Free memory was 46.1MB in the beginning and 191.0MB in the end (delta: -144.8MB). Peak memory consumption was 124.3MB. Max. memory is 16.1GB. [2023-08-29 22:45:08,486 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 69.2MB. Free memory was 46.4MB in the beginning and 46.3MB in the end (delta: 50.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 22:45:08,486 INFO L158 Benchmark]: CACSL2BoogieTranslator took 264.99ms. Allocated memory is still 69.2MB. Free memory was 45.9MB in the beginning and 34.3MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-29 22:45:08,486 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.65ms. Allocated memory was 69.2MB in the beginning and 90.2MB in the end (delta: 21.0MB). Free memory was 34.3MB in the beginning and 70.4MB in the end (delta: -36.0MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2023-08-29 22:45:08,487 INFO L158 Benchmark]: Boogie Preprocessor took 71.76ms. Allocated memory is still 90.2MB. Free memory was 70.4MB in the beginning and 68.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 22:45:08,487 INFO L158 Benchmark]: RCFGBuilder took 651.20ms. Allocated memory is still 90.2MB. Free memory was 68.6MB in the beginning and 46.2MB in the end (delta: 22.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-08-29 22:45:08,487 INFO L158 Benchmark]: TraceAbstraction took 19101.57ms. Allocated memory was 90.2MB in the beginning and 337.6MB in the end (delta: 247.5MB). Free memory was 45.5MB in the beginning and 194.1MB in the end (delta: -148.5MB). Peak memory consumption was 102.1MB. Max. memory is 16.1GB. [2023-08-29 22:45:08,488 INFO L158 Benchmark]: Witness Printer took 45.98ms. Allocated memory is still 337.6MB. Free memory was 194.1MB in the beginning and 191.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 22:45:08,489 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 69.2MB. Free memory was 46.4MB in the beginning and 46.3MB in the end (delta: 50.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 264.99ms. Allocated memory is still 69.2MB. Free memory was 45.9MB in the beginning and 34.3MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.65ms. Allocated memory was 69.2MB in the beginning and 90.2MB in the end (delta: 21.0MB). Free memory was 34.3MB in the beginning and 70.4MB in the end (delta: -36.0MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 71.76ms. Allocated memory is still 90.2MB. Free memory was 70.4MB in the beginning and 68.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 651.20ms. Allocated memory is still 90.2MB. Free memory was 68.6MB in the beginning and 46.2MB in the end (delta: 22.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 19101.57ms. Allocated memory was 90.2MB in the beginning and 337.6MB in the end (delta: 247.5MB). Free memory was 45.5MB in the beginning and 194.1MB in the end (delta: -148.5MB). Peak memory consumption was 102.1MB. Max. memory is 16.1GB. * Witness Printer took 45.98ms. Allocated memory is still 337.6MB. Free memory was 194.1MB in the beginning and 191.0MB 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: 8.8s, 260 PlacesBefore, 39 PlacesAfterwards, 264 TransitionsBefore, 29 TransitionsAfterwards, 18330 CoEnabledTransitionPairs, 8 FixpointIterations, 99 TrivialSequentialCompositions, 157 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 48 ConcurrentYvCompositions, 14 ChoiceCompositions, 321 TotalNumberOfCompositions, 16655 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 16655, independent: 16655, independent conditional: 0, independent unconditional: 16655, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 10977, independent: 10977, independent conditional: 0, independent unconditional: 10977, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 16655, independent: 5678, independent conditional: 0, independent unconditional: 5678, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 10977, unknown conditional: 0, unknown unconditional: 10977] , Statistics on independence cache: Total cache size (in pairs): 36, Positive cache size: 36, Positive conditional cache size: 0, Positive unconditional cache size: 36, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 89]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 66]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 393 locations, 17 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 18.9s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 9.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1169 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 712 mSDsluCounter, 313 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 221 mSDsCounter, 57 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1456 IncrementalHoareTripleChecker+Invalid, 1513 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 57 mSolverCounterUnsat, 92 mSDtfsCounter, 1456 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=97occurred in iteration=10, InterpolantAutomatonStates: 56, 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, 0.3s SatisfiabilityAnalysisTime, 6.1s InterpolantComputationTime, 127 NumberOfCodeBlocks, 127 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 3038 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-29 22:45:08,524 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