./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/parallel-ticket-3.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --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/parallel-ticket-3.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 c947ca303cec71cbb6edeb9f866ed53067014e89778e5c242eb251405d7ab484 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 05:57:31,468 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 05:57:31,470 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 05:57:31,511 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 05:57:31,512 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 05:57:31,515 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 05:57:31,516 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 05:57:31,519 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 05:57:31,521 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 05:57:31,525 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 05:57:31,526 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 05:57:31,530 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 05:57:31,530 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 05:57:31,532 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 05:57:31,533 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 05:57:31,538 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 05:57:31,539 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 05:57:31,540 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 05:57:31,542 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 05:57:31,546 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 05:57:31,547 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 05:57:31,548 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 05:57:31,549 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 05:57:31,550 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 05:57:31,556 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 05:57:31,556 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 05:57:31,556 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 05:57:31,558 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 05:57:31,558 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 05:57:31,559 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 05:57:31,559 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 05:57:31,561 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 05:57:31,562 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 05:57:31,563 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 05:57:31,563 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 05:57:31,564 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 05:57:31,564 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 05:57:31,564 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 05:57:31,565 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 05:57:31,565 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 05:57:31,566 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 05:57:31,567 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 05:57:31,614 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 05:57:31,615 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 05:57:31,616 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 05:57:31,616 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 05:57:31,617 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 05:57:31,617 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 05:57:31,617 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 05:57:31,617 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 05:57:31,618 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 05:57:31,618 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 05:57:31,619 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 05:57:31,619 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 05:57:31,619 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 05:57:31,619 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 05:57:31,619 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 05:57:31,619 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 05:57:31,620 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 05:57:31,620 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 05:57:31,620 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 05:57:31,620 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 05:57:31,620 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 05:57:31,620 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 05:57:31,621 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 05:57:31,621 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 05:57:31,621 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 05:57:31,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 05:57:31,621 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 05:57:31,622 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 05:57:31,622 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 05:57:31,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 05:57:31,622 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 05:57:31,622 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 05:57:31,622 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 05:57:31,623 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 05:57:31,623 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c947ca303cec71cbb6edeb9f866ed53067014e89778e5c242eb251405d7ab484 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 05:57:31,932 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 05:57:31,953 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 05:57:31,956 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 05:57:31,957 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 05:57:31,958 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 05:57:31,959 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-3.wvr.c [2023-08-30 05:57:33,081 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 05:57:33,271 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 05:57:33,272 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-3.wvr.c [2023-08-30 05:57:33,277 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c90cf964/e16fce7354bd4aa1bff6045894e2ab69/FLAG223f0f400 [2023-08-30 05:57:33,292 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c90cf964/e16fce7354bd4aa1bff6045894e2ab69 [2023-08-30 05:57:33,294 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 05:57:33,295 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 05:57:33,296 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 05:57:33,297 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 05:57:33,306 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 05:57:33,307 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:57:33" (1/1) ... [2023-08-30 05:57:33,308 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67226c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:57:33, skipping insertion in model container [2023-08-30 05:57:33,308 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:57:33" (1/1) ... [2023-08-30 05:57:33,314 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 05:57:33,335 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 05:57:33,475 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/parallel-ticket-3.wvr.c[3089,3102] [2023-08-30 05:57:33,486 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 05:57:33,499 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 05:57:33,538 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/parallel-ticket-3.wvr.c[3089,3102] [2023-08-30 05:57:33,544 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 05:57:33,553 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 05:57:33,555 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 05:57:33,561 INFO L208 MainTranslator]: Completed translation [2023-08-30 05:57:33,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:57:33 WrapperNode [2023-08-30 05:57:33,562 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 05:57:33,564 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 05:57:33,564 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 05:57:33,564 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 05:57:33,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:57:33" (1/1) ... [2023-08-30 05:57:33,589 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:57:33" (1/1) ... [2023-08-30 05:57:33,620 INFO L138 Inliner]: procedures = 22, calls = 55, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 165 [2023-08-30 05:57:33,620 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 05:57:33,621 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 05:57:33,621 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 05:57:33,622 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 05:57:33,630 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:57:33" (1/1) ... [2023-08-30 05:57:33,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:57:33" (1/1) ... [2023-08-30 05:57:33,640 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:57:33" (1/1) ... [2023-08-30 05:57:33,640 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:57:33" (1/1) ... [2023-08-30 05:57:33,649 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:57:33" (1/1) ... [2023-08-30 05:57:33,660 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:57:33" (1/1) ... [2023-08-30 05:57:33,662 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:57:33" (1/1) ... [2023-08-30 05:57:33,663 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:57:33" (1/1) ... [2023-08-30 05:57:33,670 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 05:57:33,671 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 05:57:33,671 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 05:57:33,671 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 05:57:33,672 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:57:33" (1/1) ... [2023-08-30 05:57:33,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 05:57:33,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:57:33,700 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 05:57:33,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 05:57:33,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 05:57:33,734 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 05:57:33,734 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 05:57:33,734 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 05:57:33,734 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 05:57:33,735 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 05:57:33,735 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 05:57:33,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 05:57:33,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 05:57:33,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 05:57:33,735 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 05:57:33,735 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 05:57:33,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 05:57:33,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 05:57:33,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 05:57:33,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 05:57:33,737 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 05:57:33,898 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 05:57:33,900 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 05:57:34,243 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 05:57:34,319 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 05:57:34,326 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 05:57:34,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:57:34 BoogieIcfgContainer [2023-08-30 05:57:34,331 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 05:57:34,342 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 05:57:34,342 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 05:57:34,347 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 05:57:34,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 05:57:33" (1/3) ... [2023-08-30 05:57:34,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26189ead and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:57:34, skipping insertion in model container [2023-08-30 05:57:34,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:57:33" (2/3) ... [2023-08-30 05:57:34,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26189ead and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:57:34, skipping insertion in model container [2023-08-30 05:57:34,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:57:34" (3/3) ... [2023-08-30 05:57:34,355 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-3.wvr.c [2023-08-30 05:57:34,373 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 05:57:34,374 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-08-30 05:57:34,374 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 05:57:34,487 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 05:57:34,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 135 transitions, 294 flow [2023-08-30 05:57:34,613 INFO L130 PetriNetUnfolder]: 2/132 cut-off events. [2023-08-30 05:57:34,613 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 05:57:34,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 132 events. 2/132 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 86 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2023-08-30 05:57:34,618 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 135 transitions, 294 flow [2023-08-30 05:57:34,626 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 128 transitions, 274 flow [2023-08-30 05:57:34,630 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 05:57:34,648 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 136 places, 128 transitions, 274 flow [2023-08-30 05:57:34,654 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 136 places, 128 transitions, 274 flow [2023-08-30 05:57:34,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 128 transitions, 274 flow [2023-08-30 05:57:34,703 INFO L130 PetriNetUnfolder]: 2/128 cut-off events. [2023-08-30 05:57:34,703 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 05:57:34,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 128 events. 2/128 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 85 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2023-08-30 05:57:34,706 INFO L119 LiptonReduction]: Number of co-enabled transitions 930 [2023-08-30 05:57:39,854 INFO L134 LiptonReduction]: Checked pairs total: 4778 [2023-08-30 05:57:39,855 INFO L136 LiptonReduction]: Total number of compositions: 123 [2023-08-30 05:57:39,866 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 05:57:39,872 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;@6121230, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 05:57:39,872 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-08-30 05:57:39,874 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 05:57:39,874 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 05:57:39,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:57:39,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 05:57:39,875 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:57:39,879 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:57:39,880 INFO L85 PathProgramCache]: Analyzing trace with hash 532, now seen corresponding path program 1 times [2023-08-30 05:57:39,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:57:39,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248077193] [2023-08-30 05:57:39,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:57:39,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:57:39,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:57:40,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:57:40,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:57:40,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248077193] [2023-08-30 05:57:40,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248077193] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:57:40,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:57:40,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 05:57:40,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109368972] [2023-08-30 05:57:40,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:57:40,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 05:57:40,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:57:40,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 05:57:40,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 05:57:40,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 258 [2023-08-30 05:57:40,042 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 39 transitions, 96 flow. Second operand has 2 states, 2 states have (on average 117.5) internal successors, (235), 2 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:40,042 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:57:40,042 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 258 [2023-08-30 05:57:40,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:57:40,223 INFO L130 PetriNetUnfolder]: 729/1236 cut-off events. [2023-08-30 05:57:40,223 INFO L131 PetriNetUnfolder]: For 47/47 co-relation queries the response was YES. [2023-08-30 05:57:40,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2452 conditions, 1236 events. 729/1236 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 6244 event pairs, 729 based on Foata normal form. 0/1019 useless extension candidates. Maximal degree in co-relation 2040. Up to 1149 conditions per place. [2023-08-30 05:57:40,236 INFO L137 encePairwiseOnDemand]: 255/258 looper letters, 32 selfloop transitions, 0 changer transitions 0/36 dead transitions. [2023-08-30 05:57:40,237 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 36 transitions, 154 flow [2023-08-30 05:57:40,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 05:57:40,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 05:57:40,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 269 transitions. [2023-08-30 05:57:40,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5213178294573644 [2023-08-30 05:57:40,249 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 269 transitions. [2023-08-30 05:57:40,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 269 transitions. [2023-08-30 05:57:40,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:57:40,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 269 transitions. [2023-08-30 05:57:40,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 134.5) internal successors, (269), 2 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:40,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 258.0) internal successors, (774), 3 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:40,303 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 258.0) internal successors, (774), 3 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:40,305 INFO L175 Difference]: Start difference. First operand has 49 places, 39 transitions, 96 flow. Second operand 2 states and 269 transitions. [2023-08-30 05:57:40,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 36 transitions, 154 flow [2023-08-30 05:57:40,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 36 transitions, 142 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-30 05:57:40,310 INFO L231 Difference]: Finished difference. Result has 41 places, 36 transitions, 78 flow [2023-08-30 05:57:40,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=78, PETRI_PLACES=41, PETRI_TRANSITIONS=36} [2023-08-30 05:57:40,315 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -8 predicate places. [2023-08-30 05:57:40,316 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 36 transitions, 78 flow [2023-08-30 05:57:40,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 117.5) internal successors, (235), 2 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:40,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:57:40,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 05:57:40,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 05:57:40,317 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:57:40,317 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:57:40,318 INFO L85 PathProgramCache]: Analyzing trace with hash 524284, now seen corresponding path program 1 times [2023-08-30 05:57:40,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:57:40,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796664376] [2023-08-30 05:57:40,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:57:40,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:57:40,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:57:40,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:57:40,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:57:40,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796664376] [2023-08-30 05:57:40,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796664376] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:57:40,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:57:40,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:57:40,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891860513] [2023-08-30 05:57:40,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:57:40,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:57:40,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:57:40,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:57:40,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:57:40,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 258 [2023-08-30 05:57:40,783 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 36 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:40,783 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:57:40,783 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 258 [2023-08-30 05:57:40,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:57:40,915 INFO L130 PetriNetUnfolder]: 702/1187 cut-off events. [2023-08-30 05:57:40,915 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-30 05:57:40,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2312 conditions, 1187 events. 702/1187 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 5942 event pairs, 702 based on Foata normal form. 0/990 useless extension candidates. Maximal degree in co-relation 2309. Up to 1101 conditions per place. [2023-08-30 05:57:40,923 INFO L137 encePairwiseOnDemand]: 255/258 looper letters, 29 selfloop transitions, 1 changer transitions 0/34 dead transitions. [2023-08-30 05:57:40,923 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 34 transitions, 134 flow [2023-08-30 05:57:40,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:57:40,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:57:40,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 368 transitions. [2023-08-30 05:57:40,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4754521963824289 [2023-08-30 05:57:40,928 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 368 transitions. [2023-08-30 05:57:40,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 368 transitions. [2023-08-30 05:57:40,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:57:40,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 368 transitions. [2023-08-30 05:57:40,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:40,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:40,935 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:40,935 INFO L175 Difference]: Start difference. First operand has 41 places, 36 transitions, 78 flow. Second operand 3 states and 368 transitions. [2023-08-30 05:57:40,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 34 transitions, 134 flow [2023-08-30 05:57:40,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 34 transitions, 134 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 05:57:40,937 INFO L231 Difference]: Finished difference. Result has 41 places, 34 transitions, 76 flow [2023-08-30 05:57:40,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=41, PETRI_TRANSITIONS=34} [2023-08-30 05:57:40,938 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -8 predicate places. [2023-08-30 05:57:40,938 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 34 transitions, 76 flow [2023-08-30 05:57:40,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:40,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:57:40,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 05:57:40,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 05:57:40,939 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:57:40,942 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:57:40,942 INFO L85 PathProgramCache]: Analyzing trace with hash 524282, now seen corresponding path program 1 times [2023-08-30 05:57:40,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:57:40,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259313896] [2023-08-30 05:57:40,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:57:40,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:57:40,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:57:41,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:57:41,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:57:41,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259313896] [2023-08-30 05:57:41,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259313896] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:57:41,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:57:41,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:57:41,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233687704] [2023-08-30 05:57:41,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:57:41,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:57:41,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:57:41,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:57:41,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:57:41,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 258 [2023-08-30 05:57:41,085 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 34 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:41,086 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:57:41,086 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 258 [2023-08-30 05:57:41,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:57:41,203 INFO L130 PetriNetUnfolder]: 675/1138 cut-off events. [2023-08-30 05:57:41,204 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-30 05:57:41,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2218 conditions, 1138 events. 675/1138 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 5684 event pairs, 675 based on Foata normal form. 0/961 useless extension candidates. Maximal degree in co-relation 2214. Up to 1054 conditions per place. [2023-08-30 05:57:41,209 INFO L137 encePairwiseOnDemand]: 255/258 looper letters, 27 selfloop transitions, 1 changer transitions 0/32 dead transitions. [2023-08-30 05:57:41,210 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 32 transitions, 128 flow [2023-08-30 05:57:41,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:57:41,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:57:41,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 351 transitions. [2023-08-30 05:57:41,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45348837209302323 [2023-08-30 05:57:41,211 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 351 transitions. [2023-08-30 05:57:41,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 351 transitions. [2023-08-30 05:57:41,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:57:41,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 351 transitions. [2023-08-30 05:57:41,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:41,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:41,215 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:41,215 INFO L175 Difference]: Start difference. First operand has 41 places, 34 transitions, 76 flow. Second operand 3 states and 351 transitions. [2023-08-30 05:57:41,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 32 transitions, 128 flow [2023-08-30 05:57:41,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 32 transitions, 127 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:57:41,216 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 73 flow [2023-08-30 05:57:41,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=40, PETRI_TRANSITIONS=32} [2023-08-30 05:57:41,217 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -9 predicate places. [2023-08-30 05:57:41,217 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 73 flow [2023-08-30 05:57:41,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:41,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:57:41,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 05:57:41,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 05:57:41,218 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)] === [2023-08-30 05:57:41,218 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:57:41,218 INFO L85 PathProgramCache]: Analyzing trace with hash 503847967, now seen corresponding path program 1 times [2023-08-30 05:57:41,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:57:41,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032854367] [2023-08-30 05:57:41,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:57:41,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:57:41,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:57:41,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:57:41,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:57:41,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032854367] [2023-08-30 05:57:41,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032854367] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:57:41,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:57:41,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:57:41,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868508461] [2023-08-30 05:57:41,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:57:41,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:57:41,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:57:41,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:57:41,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:57:41,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 258 [2023-08-30 05:57:41,303 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:41,303 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:57:41,304 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 258 [2023-08-30 05:57:41,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:57:41,405 INFO L130 PetriNetUnfolder]: 648/1087 cut-off events. [2023-08-30 05:57:41,406 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-30 05:57:41,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2121 conditions, 1087 events. 648/1087 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5354 event pairs, 648 based on Foata normal form. 0/931 useless extension candidates. Maximal degree in co-relation 2117. Up to 1007 conditions per place. [2023-08-30 05:57:41,411 INFO L137 encePairwiseOnDemand]: 255/258 looper letters, 25 selfloop transitions, 1 changer transitions 0/30 dead transitions. [2023-08-30 05:57:41,412 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 30 transitions, 121 flow [2023-08-30 05:57:41,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:57:41,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:57:41,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 352 transitions. [2023-08-30 05:57:41,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45478036175710596 [2023-08-30 05:57:41,414 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 352 transitions. [2023-08-30 05:57:41,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 352 transitions. [2023-08-30 05:57:41,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:57:41,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 352 transitions. [2023-08-30 05:57:41,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:41,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:41,418 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:41,418 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 73 flow. Second operand 3 states and 352 transitions. [2023-08-30 05:57:41,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 30 transitions, 121 flow [2023-08-30 05:57:41,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 30 transitions, 120 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:57:41,419 INFO L231 Difference]: Finished difference. Result has 39 places, 30 transitions, 70 flow [2023-08-30 05:57:41,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=39, PETRI_TRANSITIONS=30} [2023-08-30 05:57:41,420 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -10 predicate places. [2023-08-30 05:57:41,421 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 30 transitions, 70 flow [2023-08-30 05:57:41,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:41,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:57:41,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 05:57:41,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 05:57:41,422 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)] === [2023-08-30 05:57:41,422 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:57:41,422 INFO L85 PathProgramCache]: Analyzing trace with hash 503847968, now seen corresponding path program 1 times [2023-08-30 05:57:41,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:57:41,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555337967] [2023-08-30 05:57:41,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:57:41,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:57:41,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:57:41,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:57:41,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:57:41,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555337967] [2023-08-30 05:57:41,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555337967] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:57:41,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:57:41,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:57:41,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812074885] [2023-08-30 05:57:41,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:57:41,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:57:41,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:57:41,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:57:41,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:57:41,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 258 [2023-08-30 05:57:41,499 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 30 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:41,499 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:57:41,500 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 258 [2023-08-30 05:57:41,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:57:41,594 INFO L130 PetriNetUnfolder]: 621/1036 cut-off events. [2023-08-30 05:57:41,594 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-30 05:57:41,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2024 conditions, 1036 events. 621/1036 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 5086 event pairs, 621 based on Foata normal form. 0/901 useless extension candidates. Maximal degree in co-relation 2020. Up to 960 conditions per place. [2023-08-30 05:57:41,599 INFO L137 encePairwiseOnDemand]: 255/258 looper letters, 23 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2023-08-30 05:57:41,599 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 28 transitions, 114 flow [2023-08-30 05:57:41,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:57:41,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:57:41,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 347 transitions. [2023-08-30 05:57:41,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4483204134366925 [2023-08-30 05:57:41,601 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 347 transitions. [2023-08-30 05:57:41,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 347 transitions. [2023-08-30 05:57:41,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:57:41,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 347 transitions. [2023-08-30 05:57:41,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:41,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:41,604 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:41,604 INFO L175 Difference]: Start difference. First operand has 39 places, 30 transitions, 70 flow. Second operand 3 states and 347 transitions. [2023-08-30 05:57:41,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 28 transitions, 114 flow [2023-08-30 05:57:41,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 28 transitions, 113 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:57:41,605 INFO L231 Difference]: Finished difference. Result has 38 places, 28 transitions, 67 flow [2023-08-30 05:57:41,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=38, PETRI_TRANSITIONS=28} [2023-08-30 05:57:41,606 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -11 predicate places. [2023-08-30 05:57:41,606 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 28 transitions, 67 flow [2023-08-30 05:57:41,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:41,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:57:41,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:57:41,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 05:57:41,607 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)] === [2023-08-30 05:57:41,607 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:57:41,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1133397031, now seen corresponding path program 1 times [2023-08-30 05:57:41,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:57:41,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706224330] [2023-08-30 05:57:41,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:57:41,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:57:41,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:57:41,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:57:41,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:57:41,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706224330] [2023-08-30 05:57:41,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706224330] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:57:41,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:57:41,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 05:57:41,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060497402] [2023-08-30 05:57:41,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:57:41,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 05:57:41,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:57:41,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 05:57:41,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-30 05:57:41,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 258 [2023-08-30 05:57:41,833 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 28 transitions, 67 flow. Second operand has 5 states, 5 states have (on average 98.4) internal successors, (492), 5 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:41,833 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:57:41,833 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 258 [2023-08-30 05:57:41,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:57:41,908 INFO L130 PetriNetUnfolder]: 477/812 cut-off events. [2023-08-30 05:57:41,909 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-30 05:57:41,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1593 conditions, 812 events. 477/812 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3759 event pairs, 477 based on Foata normal form. 0/741 useless extension candidates. Maximal degree in co-relation 1589. Up to 752 conditions per place. [2023-08-30 05:57:41,913 INFO L137 encePairwiseOnDemand]: 256/258 looper letters, 22 selfloop transitions, 1 changer transitions 0/27 dead transitions. [2023-08-30 05:57:41,913 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 27 transitions, 111 flow [2023-08-30 05:57:41,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:57:41,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:57:41,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 315 transitions. [2023-08-30 05:57:41,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4069767441860465 [2023-08-30 05:57:41,915 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 315 transitions. [2023-08-30 05:57:41,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 315 transitions. [2023-08-30 05:57:41,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:57:41,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 315 transitions. [2023-08-30 05:57:41,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:41,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:41,919 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:41,919 INFO L175 Difference]: Start difference. First operand has 38 places, 28 transitions, 67 flow. Second operand 3 states and 315 transitions. [2023-08-30 05:57:41,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 27 transitions, 111 flow [2023-08-30 05:57:41,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 27 transitions, 110 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:57:41,920 INFO L231 Difference]: Finished difference. Result has 38 places, 27 transitions, 66 flow [2023-08-30 05:57:41,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=38, PETRI_TRANSITIONS=27} [2023-08-30 05:57:41,922 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -11 predicate places. [2023-08-30 05:57:41,923 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 27 transitions, 66 flow [2023-08-30 05:57:41,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 98.4) internal successors, (492), 5 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:41,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:57:41,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:57:41,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 05:57:41,925 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)] === [2023-08-30 05:57:41,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:57:41,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1133397033, now seen corresponding path program 1 times [2023-08-30 05:57:41,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:57:41,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268520648] [2023-08-30 05:57:41,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:57:41,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:57:41,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:57:41,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:57:41,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:57:41,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268520648] [2023-08-30 05:57:41,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268520648] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:57:41,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:57:41,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:57:41,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544993584] [2023-08-30 05:57:41,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:57:41,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:57:41,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:57:41,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:57:41,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:57:42,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 258 [2023-08-30 05:57:42,003 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 27 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:42,003 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:57:42,003 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 258 [2023-08-30 05:57:42,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:57:42,059 INFO L130 PetriNetUnfolder]: 333/588 cut-off events. [2023-08-30 05:57:42,059 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-30 05:57:42,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1162 conditions, 588 events. 333/588 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2573 event pairs, 333 based on Foata normal form. 0/581 useless extension candidates. Maximal degree in co-relation 1158. Up to 544 conditions per place. [2023-08-30 05:57:42,063 INFO L137 encePairwiseOnDemand]: 256/258 looper letters, 21 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2023-08-30 05:57:42,063 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 26 transitions, 108 flow [2023-08-30 05:57:42,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:57:42,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:57:42,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 347 transitions. [2023-08-30 05:57:42,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4483204134366925 [2023-08-30 05:57:42,065 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 347 transitions. [2023-08-30 05:57:42,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 347 transitions. [2023-08-30 05:57:42,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:57:42,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 347 transitions. [2023-08-30 05:57:42,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:42,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:42,068 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:42,068 INFO L175 Difference]: Start difference. First operand has 38 places, 27 transitions, 66 flow. Second operand 3 states and 347 transitions. [2023-08-30 05:57:42,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 26 transitions, 108 flow [2023-08-30 05:57:42,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 26 transitions, 107 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:57:42,069 INFO L231 Difference]: Finished difference. Result has 38 places, 26 transitions, 65 flow [2023-08-30 05:57:42,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=38, PETRI_TRANSITIONS=26} [2023-08-30 05:57:42,069 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -11 predicate places. [2023-08-30 05:57:42,070 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 26 transitions, 65 flow [2023-08-30 05:57:42,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:42,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:57:42,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:57:42,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 05:57:42,070 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)] === [2023-08-30 05:57:42,071 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:57:42,071 INFO L85 PathProgramCache]: Analyzing trace with hash 291274630, now seen corresponding path program 1 times [2023-08-30 05:57:42,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:57:42,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632721457] [2023-08-30 05:57:42,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:57:42,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:57:42,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:57:42,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:57:42,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:57:42,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632721457] [2023-08-30 05:57:42,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632721457] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:57:42,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:57:42,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 05:57:42,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774700790] [2023-08-30 05:57:42,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:57:42,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 05:57:42,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:57:42,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 05:57:42,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 05:57:42,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 258 [2023-08-30 05:57:42,950 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 26 transitions, 65 flow. Second operand has 5 states, 5 states have (on average 114.2) internal successors, (571), 5 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:42,951 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:57:42,951 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 258 [2023-08-30 05:57:42,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:57:43,192 INFO L130 PetriNetUnfolder]: 1139/1840 cut-off events. [2023-08-30 05:57:43,193 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-30 05:57:43,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3737 conditions, 1840 events. 1139/1840 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 8537 event pairs, 428 based on Foata normal form. 2/1842 useless extension candidates. Maximal degree in co-relation 3733. Up to 646 conditions per place. [2023-08-30 05:57:43,199 INFO L137 encePairwiseOnDemand]: 252/258 looper letters, 53 selfloop transitions, 7 changer transitions 17/77 dead transitions. [2023-08-30 05:57:43,200 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 77 transitions, 331 flow [2023-08-30 05:57:43,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 05:57:43,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 05:57:43,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 624 transitions. [2023-08-30 05:57:43,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48372093023255813 [2023-08-30 05:57:43,202 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 624 transitions. [2023-08-30 05:57:43,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 624 transitions. [2023-08-30 05:57:43,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:57:43,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 624 transitions. [2023-08-30 05:57:43,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 124.8) internal successors, (624), 5 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:43,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 258.0) internal successors, (1548), 6 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:43,206 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 258.0) internal successors, (1548), 6 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:43,206 INFO L175 Difference]: Start difference. First operand has 38 places, 26 transitions, 65 flow. Second operand 5 states and 624 transitions. [2023-08-30 05:57:43,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 77 transitions, 331 flow [2023-08-30 05:57:43,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 77 transitions, 330 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:57:43,210 INFO L231 Difference]: Finished difference. Result has 44 places, 31 transitions, 109 flow [2023-08-30 05:57:43,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=109, PETRI_PLACES=44, PETRI_TRANSITIONS=31} [2023-08-30 05:57:43,212 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -5 predicate places. [2023-08-30 05:57:43,212 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 31 transitions, 109 flow [2023-08-30 05:57:43,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 114.2) internal successors, (571), 5 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:43,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:57:43,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:57:43,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 05:57:43,213 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)] === [2023-08-30 05:57:43,220 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:57:43,221 INFO L85 PathProgramCache]: Analyzing trace with hash 266636022, now seen corresponding path program 2 times [2023-08-30 05:57:43,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:57:43,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685457624] [2023-08-30 05:57:43,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:57:43,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:57:43,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:57:43,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:57:43,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:57:43,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685457624] [2023-08-30 05:57:43,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685457624] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:57:43,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:57:43,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 05:57:43,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344344511] [2023-08-30 05:57:43,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:57:43,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 05:57:43,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:57:43,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 05:57:43,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 05:57:43,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 258 [2023-08-30 05:57:43,456 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 31 transitions, 109 flow. Second operand has 6 states, 6 states have (on average 112.66666666666667) internal successors, (676), 6 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:43,456 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:57:43,456 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 258 [2023-08-30 05:57:43,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:57:43,624 INFO L130 PetriNetUnfolder]: 374/707 cut-off events. [2023-08-30 05:57:43,624 INFO L131 PetriNetUnfolder]: For 59/61 co-relation queries the response was YES. [2023-08-30 05:57:43,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1523 conditions, 707 events. 374/707 cut-off events. For 59/61 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3325 event pairs, 57 based on Foata normal form. 28/721 useless extension candidates. Maximal degree in co-relation 1516. Up to 359 conditions per place. [2023-08-30 05:57:43,629 INFO L137 encePairwiseOnDemand]: 250/258 looper letters, 50 selfloop transitions, 15 changer transitions 0/74 dead transitions. [2023-08-30 05:57:43,629 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 74 transitions, 330 flow [2023-08-30 05:57:43,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:57:43,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:57:43,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 830 transitions. [2023-08-30 05:57:43,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45957918050941304 [2023-08-30 05:57:43,632 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 830 transitions. [2023-08-30 05:57:43,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 830 transitions. [2023-08-30 05:57:43,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:57:43,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 830 transitions. [2023-08-30 05:57:43,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 118.57142857142857) internal successors, (830), 7 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:43,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 258.0) internal successors, (2064), 8 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:43,637 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 258.0) internal successors, (2064), 8 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:43,637 INFO L175 Difference]: Start difference. First operand has 44 places, 31 transitions, 109 flow. Second operand 7 states and 830 transitions. [2023-08-30 05:57:43,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 74 transitions, 330 flow [2023-08-30 05:57:43,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 74 transitions, 319 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 05:57:43,640 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 188 flow [2023-08-30 05:57:43,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=188, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2023-08-30 05:57:43,641 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 3 predicate places. [2023-08-30 05:57:43,641 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 188 flow [2023-08-30 05:57:43,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 112.66666666666667) internal successors, (676), 6 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:43,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:57:43,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:57:43,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 05:57:43,643 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)] === [2023-08-30 05:57:43,643 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:57:43,643 INFO L85 PathProgramCache]: Analyzing trace with hash -819796504, now seen corresponding path program 3 times [2023-08-30 05:57:43,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:57:43,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023239388] [2023-08-30 05:57:43,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:57:43,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:57:43,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:57:43,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:57:43,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:57:43,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023239388] [2023-08-30 05:57:43,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023239388] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:57:43,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:57:43,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 05:57:43,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73376591] [2023-08-30 05:57:43,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:57:43,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 05:57:43,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:57:43,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 05:57:43,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 05:57:43,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 258 [2023-08-30 05:57:43,841 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 188 flow. Second operand has 6 states, 6 states have (on average 112.66666666666667) internal successors, (676), 6 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:43,841 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:57:43,841 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 258 [2023-08-30 05:57:43,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:57:43,996 INFO L130 PetriNetUnfolder]: 283/562 cut-off events. [2023-08-30 05:57:43,997 INFO L131 PetriNetUnfolder]: For 335/373 co-relation queries the response was YES. [2023-08-30 05:57:43,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1549 conditions, 562 events. 283/562 cut-off events. For 335/373 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2490 event pairs, 52 based on Foata normal form. 36/592 useless extension candidates. Maximal degree in co-relation 1539. Up to 296 conditions per place. [2023-08-30 05:57:44,001 INFO L137 encePairwiseOnDemand]: 250/258 looper letters, 36 selfloop transitions, 11 changer transitions 12/68 dead transitions. [2023-08-30 05:57:44,001 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 68 transitions, 371 flow [2023-08-30 05:57:44,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:57:44,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:57:44,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 822 transitions. [2023-08-30 05:57:44,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45514950166112955 [2023-08-30 05:57:44,004 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 822 transitions. [2023-08-30 05:57:44,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 822 transitions. [2023-08-30 05:57:44,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:57:44,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 822 transitions. [2023-08-30 05:57:44,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 117.42857142857143) internal successors, (822), 7 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:44,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 258.0) internal successors, (2064), 8 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:44,010 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 258.0) internal successors, (2064), 8 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:44,010 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 188 flow. Second operand 7 states and 822 transitions. [2023-08-30 05:57:44,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 68 transitions, 371 flow [2023-08-30 05:57:44,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 68 transitions, 371 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 05:57:44,015 INFO L231 Difference]: Finished difference. Result has 62 places, 42 transitions, 215 flow [2023-08-30 05:57:44,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=215, PETRI_PLACES=62, PETRI_TRANSITIONS=42} [2023-08-30 05:57:44,017 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 13 predicate places. [2023-08-30 05:57:44,017 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 42 transitions, 215 flow [2023-08-30 05:57:44,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 112.66666666666667) internal successors, (676), 6 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:44,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:57:44,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:57:44,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 05:57:44,018 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)] === [2023-08-30 05:57:44,019 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:57:44,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1292674230, now seen corresponding path program 4 times [2023-08-30 05:57:44,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:57:44,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424639657] [2023-08-30 05:57:44,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:57:44,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:57:44,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:57:44,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:57:44,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:57:44,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424639657] [2023-08-30 05:57:44,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424639657] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:57:44,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:57:44,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 05:57:44,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525951007] [2023-08-30 05:57:44,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:57:44,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 05:57:44,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:57:44,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 05:57:44,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 05:57:44,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 258 [2023-08-30 05:57:44,237 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 42 transitions, 215 flow. Second operand has 6 states, 6 states have (on average 112.66666666666667) internal successors, (676), 6 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:44,237 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:57:44,237 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 258 [2023-08-30 05:57:44,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:57:44,365 INFO L130 PetriNetUnfolder]: 175/370 cut-off events. [2023-08-30 05:57:44,365 INFO L131 PetriNetUnfolder]: For 412/430 co-relation queries the response was YES. [2023-08-30 05:57:44,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1178 conditions, 370 events. 175/370 cut-off events. For 412/430 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1497 event pairs, 46 based on Foata normal form. 12/379 useless extension candidates. Maximal degree in co-relation 1163. Up to 262 conditions per place. [2023-08-30 05:57:44,368 INFO L137 encePairwiseOnDemand]: 252/258 looper letters, 39 selfloop transitions, 8 changer transitions 0/55 dead transitions. [2023-08-30 05:57:44,368 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 55 transitions, 358 flow [2023-08-30 05:57:44,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 05:57:44,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 05:57:44,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 586 transitions. [2023-08-30 05:57:44,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4542635658914729 [2023-08-30 05:57:44,378 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 586 transitions. [2023-08-30 05:57:44,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 586 transitions. [2023-08-30 05:57:44,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:57:44,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 586 transitions. [2023-08-30 05:57:44,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 117.2) internal successors, (586), 5 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:44,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 258.0) internal successors, (1548), 6 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:44,382 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 258.0) internal successors, (1548), 6 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:44,382 INFO L175 Difference]: Start difference. First operand has 62 places, 42 transitions, 215 flow. Second operand 5 states and 586 transitions. [2023-08-30 05:57:44,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 55 transitions, 358 flow [2023-08-30 05:57:44,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 55 transitions, 336 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-08-30 05:57:44,385 INFO L231 Difference]: Finished difference. Result has 59 places, 43 transitions, 232 flow [2023-08-30 05:57:44,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=232, PETRI_PLACES=59, PETRI_TRANSITIONS=43} [2023-08-30 05:57:44,386 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 10 predicate places. [2023-08-30 05:57:44,386 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 43 transitions, 232 flow [2023-08-30 05:57:44,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 112.66666666666667) internal successors, (676), 6 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:44,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:57:44,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:57:44,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 05:57:44,386 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)] === [2023-08-30 05:57:44,387 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:57:44,387 INFO L85 PathProgramCache]: Analyzing trace with hash -123018630, now seen corresponding path program 5 times [2023-08-30 05:57:44,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:57:44,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511866940] [2023-08-30 05:57:44,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:57:44,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:57:44,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:57:44,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:57:44,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:57:44,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511866940] [2023-08-30 05:57:44,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511866940] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:57:44,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:57:44,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 05:57:44,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177973765] [2023-08-30 05:57:44,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:57:44,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 05:57:44,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:57:44,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 05:57:44,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 05:57:44,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 258 [2023-08-30 05:57:44,611 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 43 transitions, 232 flow. Second operand has 8 states, 8 states have (on average 111.75) internal successors, (894), 8 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:44,611 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:57:44,611 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 258 [2023-08-30 05:57:44,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:57:44,824 INFO L130 PetriNetUnfolder]: 179/424 cut-off events. [2023-08-30 05:57:44,824 INFO L131 PetriNetUnfolder]: For 461/475 co-relation queries the response was YES. [2023-08-30 05:57:44,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1333 conditions, 424 events. 179/424 cut-off events. For 461/475 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2029 event pairs, 20 based on Foata normal form. 42/466 useless extension candidates. Maximal degree in co-relation 1319. Up to 139 conditions per place. [2023-08-30 05:57:44,828 INFO L137 encePairwiseOnDemand]: 250/258 looper letters, 50 selfloop transitions, 19 changer transitions 18/93 dead transitions. [2023-08-30 05:57:44,828 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 93 transitions, 592 flow [2023-08-30 05:57:44,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 05:57:44,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 05:57:44,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1393 transitions. [2023-08-30 05:57:44,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44993540051679587 [2023-08-30 05:57:44,832 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1393 transitions. [2023-08-30 05:57:44,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1393 transitions. [2023-08-30 05:57:44,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:57:44,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1393 transitions. [2023-08-30 05:57:44,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 116.08333333333333) internal successors, (1393), 12 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:44,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 258.0) internal successors, (3354), 13 states have internal predecessors, (3354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:44,841 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 258.0) internal successors, (3354), 13 states have internal predecessors, (3354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:44,842 INFO L175 Difference]: Start difference. First operand has 59 places, 43 transitions, 232 flow. Second operand 12 states and 1393 transitions. [2023-08-30 05:57:44,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 93 transitions, 592 flow [2023-08-30 05:57:44,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 93 transitions, 576 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 05:57:44,846 INFO L231 Difference]: Finished difference. Result has 72 places, 48 transitions, 320 flow [2023-08-30 05:57:44,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=320, PETRI_PLACES=72, PETRI_TRANSITIONS=48} [2023-08-30 05:57:44,846 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 23 predicate places. [2023-08-30 05:57:44,847 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 48 transitions, 320 flow [2023-08-30 05:57:44,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 111.75) internal successors, (894), 8 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:44,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:57:44,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:57:44,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 05:57:44,848 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)] === [2023-08-30 05:57:44,848 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:57:44,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1257210990, now seen corresponding path program 6 times [2023-08-30 05:57:44,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:57:44,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119032515] [2023-08-30 05:57:44,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:57:44,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:57:44,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:57:45,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:57:45,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:57:45,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119032515] [2023-08-30 05:57:45,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119032515] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:57:45,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:57:45,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 05:57:45,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83547548] [2023-08-30 05:57:45,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:57:45,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 05:57:45,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:57:45,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 05:57:45,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 05:57:45,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 258 [2023-08-30 05:57:45,077 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 48 transitions, 320 flow. Second operand has 7 states, 7 states have (on average 112.14285714285714) internal successors, (785), 7 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:45,077 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:57:45,077 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 258 [2023-08-30 05:57:45,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:57:45,242 INFO L130 PetriNetUnfolder]: 134/325 cut-off events. [2023-08-30 05:57:45,242 INFO L131 PetriNetUnfolder]: For 921/945 co-relation queries the response was YES. [2023-08-30 05:57:45,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1264 conditions, 325 events. 134/325 cut-off events. For 921/945 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1381 event pairs, 20 based on Foata normal form. 20/345 useless extension candidates. Maximal degree in co-relation 1245. Up to 133 conditions per place. [2023-08-30 05:57:45,246 INFO L137 encePairwiseOnDemand]: 250/258 looper letters, 45 selfloop transitions, 17 changer transitions 6/74 dead transitions. [2023-08-30 05:57:45,246 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 74 transitions, 545 flow [2023-08-30 05:57:45,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 05:57:45,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 05:57:45,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1048 transitions. [2023-08-30 05:57:45,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45133505598621876 [2023-08-30 05:57:45,249 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1048 transitions. [2023-08-30 05:57:45,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1048 transitions. [2023-08-30 05:57:45,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:57:45,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1048 transitions. [2023-08-30 05:57:45,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 116.44444444444444) internal successors, (1048), 9 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:45,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 258.0) internal successors, (2580), 10 states have internal predecessors, (2580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:45,256 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 258.0) internal successors, (2580), 10 states have internal predecessors, (2580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:45,256 INFO L175 Difference]: Start difference. First operand has 72 places, 48 transitions, 320 flow. Second operand 9 states and 1048 transitions. [2023-08-30 05:57:45,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 74 transitions, 545 flow [2023-08-30 05:57:45,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 74 transitions, 500 flow, removed 16 selfloop flow, removed 6 redundant places. [2023-08-30 05:57:45,261 INFO L231 Difference]: Finished difference. Result has 71 places, 45 transitions, 297 flow [2023-08-30 05:57:45,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=297, PETRI_PLACES=71, PETRI_TRANSITIONS=45} [2023-08-30 05:57:45,262 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 22 predicate places. [2023-08-30 05:57:45,262 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 45 transitions, 297 flow [2023-08-30 05:57:45,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 112.14285714285714) internal successors, (785), 7 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:45,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:57:45,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:57:45,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 05:57:45,263 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:57:45,263 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:57:45,264 INFO L85 PathProgramCache]: Analyzing trace with hash 475515792, now seen corresponding path program 7 times [2023-08-30 05:57:45,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:57:45,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208288270] [2023-08-30 05:57:45,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:57:45,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:57:45,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:57:45,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:57:45,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:57:45,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208288270] [2023-08-30 05:57:45,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208288270] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:57:45,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:57:45,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 05:57:45,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197796194] [2023-08-30 05:57:45,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:57:45,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 05:57:45,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:57:45,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 05:57:45,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 05:57:45,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 258 [2023-08-30 05:57:45,477 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 45 transitions, 297 flow. Second operand has 8 states, 8 states have (on average 111.75) internal successors, (894), 8 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:45,477 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:57:45,478 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 258 [2023-08-30 05:57:45,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:57:45,651 INFO L130 PetriNetUnfolder]: 116/281 cut-off events. [2023-08-30 05:57:45,651 INFO L131 PetriNetUnfolder]: For 580/596 co-relation queries the response was YES. [2023-08-30 05:57:45,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1045 conditions, 281 events. 116/281 cut-off events. For 580/596 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1099 event pairs, 24 based on Foata normal form. 12/291 useless extension candidates. Maximal degree in co-relation 1027. Up to 129 conditions per place. [2023-08-30 05:57:45,653 INFO L137 encePairwiseOnDemand]: 250/258 looper letters, 39 selfloop transitions, 13 changer transitions 11/69 dead transitions. [2023-08-30 05:57:45,654 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 69 transitions, 498 flow [2023-08-30 05:57:45,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 05:57:45,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 05:57:45,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1044 transitions. [2023-08-30 05:57:45,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4496124031007752 [2023-08-30 05:57:45,657 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1044 transitions. [2023-08-30 05:57:45,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1044 transitions. [2023-08-30 05:57:45,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:57:45,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1044 transitions. [2023-08-30 05:57:45,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 116.0) internal successors, (1044), 9 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:45,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 258.0) internal successors, (2580), 10 states have internal predecessors, (2580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:45,664 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 258.0) internal successors, (2580), 10 states have internal predecessors, (2580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:45,664 INFO L175 Difference]: Start difference. First operand has 71 places, 45 transitions, 297 flow. Second operand 9 states and 1044 transitions. [2023-08-30 05:57:45,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 69 transitions, 498 flow [2023-08-30 05:57:45,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 69 transitions, 453 flow, removed 5 selfloop flow, removed 9 redundant places. [2023-08-30 05:57:45,668 INFO L231 Difference]: Finished difference. Result has 70 places, 41 transitions, 252 flow [2023-08-30 05:57:45,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=252, PETRI_PLACES=70, PETRI_TRANSITIONS=41} [2023-08-30 05:57:45,670 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 21 predicate places. [2023-08-30 05:57:45,670 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 41 transitions, 252 flow [2023-08-30 05:57:45,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 111.75) internal successors, (894), 8 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:45,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:57:45,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:57:45,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 05:57:45,671 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:57:45,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:57:45,672 INFO L85 PathProgramCache]: Analyzing trace with hash -886332258, now seen corresponding path program 8 times [2023-08-30 05:57:45,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:57:45,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798833676] [2023-08-30 05:57:45,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:57:45,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:57:45,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:57:45,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:57:45,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:57:45,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798833676] [2023-08-30 05:57:45,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798833676] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:57:45,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:57:45,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 05:57:45,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909968690] [2023-08-30 05:57:45,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:57:45,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 05:57:45,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:57:45,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 05:57:45,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-30 05:57:45,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 258 [2023-08-30 05:57:45,889 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 41 transitions, 252 flow. Second operand has 7 states, 7 states have (on average 112.14285714285714) internal successors, (785), 7 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:45,889 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:57:45,889 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 258 [2023-08-30 05:57:45,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:57:45,992 INFO L130 PetriNetUnfolder]: 104/269 cut-off events. [2023-08-30 05:57:45,992 INFO L131 PetriNetUnfolder]: For 528/548 co-relation queries the response was YES. [2023-08-30 05:57:45,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 950 conditions, 269 events. 104/269 cut-off events. For 528/548 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1068 event pairs, 16 based on Foata normal form. 4/273 useless extension candidates. Maximal degree in co-relation 933. Up to 106 conditions per place. [2023-08-30 05:57:45,994 INFO L137 encePairwiseOnDemand]: 250/258 looper letters, 36 selfloop transitions, 21 changer transitions 5/68 dead transitions. [2023-08-30 05:57:45,995 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 68 transitions, 479 flow [2023-08-30 05:57:45,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:57:45,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:57:45,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 816 transitions. [2023-08-30 05:57:45,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45182724252491696 [2023-08-30 05:57:45,998 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 816 transitions. [2023-08-30 05:57:45,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 816 transitions. [2023-08-30 05:57:45,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:57:45,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 816 transitions. [2023-08-30 05:57:46,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 116.57142857142857) internal successors, (816), 7 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:46,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 258.0) internal successors, (2064), 8 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:46,003 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 258.0) internal successors, (2064), 8 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:46,003 INFO L175 Difference]: Start difference. First operand has 70 places, 41 transitions, 252 flow. Second operand 7 states and 816 transitions. [2023-08-30 05:57:46,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 68 transitions, 479 flow [2023-08-30 05:57:46,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 68 transitions, 437 flow, removed 5 selfloop flow, removed 9 redundant places. [2023-08-30 05:57:46,006 INFO L231 Difference]: Finished difference. Result has 64 places, 48 transitions, 324 flow [2023-08-30 05:57:46,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=324, PETRI_PLACES=64, PETRI_TRANSITIONS=48} [2023-08-30 05:57:46,007 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 15 predicate places. [2023-08-30 05:57:46,007 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 48 transitions, 324 flow [2023-08-30 05:57:46,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 112.14285714285714) internal successors, (785), 7 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:46,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:57:46,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:57:46,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 05:57:46,008 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:57:46,009 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:57:46,009 INFO L85 PathProgramCache]: Analyzing trace with hash 22650432, now seen corresponding path program 9 times [2023-08-30 05:57:46,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:57:46,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331321646] [2023-08-30 05:57:46,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:57:46,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:57:46,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:57:46,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:57:46,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:57:46,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331321646] [2023-08-30 05:57:46,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331321646] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:57:46,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:57:46,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 05:57:46,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494157914] [2023-08-30 05:57:46,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:57:46,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 05:57:46,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:57:46,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 05:57:46,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-08-30 05:57:46,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 258 [2023-08-30 05:57:46,270 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 48 transitions, 324 flow. Second operand has 8 states, 8 states have (on average 111.75) internal successors, (894), 8 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:46,270 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:57:46,270 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 258 [2023-08-30 05:57:46,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:57:46,397 INFO L130 PetriNetUnfolder]: 87/232 cut-off events. [2023-08-30 05:57:46,397 INFO L131 PetriNetUnfolder]: For 466/478 co-relation queries the response was YES. [2023-08-30 05:57:46,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 859 conditions, 232 events. 87/232 cut-off events. For 466/478 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 885 event pairs, 8 based on Foata normal form. 20/252 useless extension candidates. Maximal degree in co-relation 843. Up to 64 conditions per place. [2023-08-30 05:57:46,399 INFO L137 encePairwiseOnDemand]: 250/258 looper letters, 29 selfloop transitions, 16 changer transitions 18/67 dead transitions. [2023-08-30 05:57:46,399 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 67 transitions, 488 flow [2023-08-30 05:57:46,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 05:57:46,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 05:57:46,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1038 transitions. [2023-08-30 05:57:46,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470284237726098 [2023-08-30 05:57:46,403 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1038 transitions. [2023-08-30 05:57:46,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1038 transitions. [2023-08-30 05:57:46,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:57:46,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1038 transitions. [2023-08-30 05:57:46,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 115.33333333333333) internal successors, (1038), 9 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:46,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 258.0) internal successors, (2580), 10 states have internal predecessors, (2580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:46,409 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 258.0) internal successors, (2580), 10 states have internal predecessors, (2580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:46,409 INFO L175 Difference]: Start difference. First operand has 64 places, 48 transitions, 324 flow. Second operand 9 states and 1038 transitions. [2023-08-30 05:57:46,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 67 transitions, 488 flow [2023-08-30 05:57:46,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 67 transitions, 433 flow, removed 17 selfloop flow, removed 6 redundant places. [2023-08-30 05:57:46,413 INFO L231 Difference]: Finished difference. Result has 66 places, 39 transitions, 244 flow [2023-08-30 05:57:46,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=244, PETRI_PLACES=66, PETRI_TRANSITIONS=39} [2023-08-30 05:57:46,413 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 17 predicate places. [2023-08-30 05:57:46,414 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 39 transitions, 244 flow [2023-08-30 05:57:46,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 111.75) internal successors, (894), 8 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:46,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:57:46,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:57:46,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 05:57:46,415 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:57:46,415 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:57:46,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1676023802, now seen corresponding path program 10 times [2023-08-30 05:57:46,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:57:46,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540103160] [2023-08-30 05:57:46,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:57:46,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:57:46,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:57:46,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:57:46,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:57:46,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540103160] [2023-08-30 05:57:46,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540103160] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:57:46,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:57:46,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 05:57:46,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934688601] [2023-08-30 05:57:46,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:57:46,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 05:57:46,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:57:46,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 05:57:46,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 05:57:46,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 258 [2023-08-30 05:57:46,636 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 39 transitions, 244 flow. Second operand has 8 states, 8 states have (on average 111.75) internal successors, (894), 8 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:46,636 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:57:46,636 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 258 [2023-08-30 05:57:46,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:57:46,743 INFO L130 PetriNetUnfolder]: 48/135 cut-off events. [2023-08-30 05:57:46,743 INFO L131 PetriNetUnfolder]: For 323/331 co-relation queries the response was YES. [2023-08-30 05:57:46,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 505 conditions, 135 events. 48/135 cut-off events. For 323/331 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 399 event pairs, 8 based on Foata normal form. 8/143 useless extension candidates. Maximal degree in co-relation 490. Up to 83 conditions per place. [2023-08-30 05:57:46,744 INFO L137 encePairwiseOnDemand]: 252/258 looper letters, 30 selfloop transitions, 5 changer transitions 6/45 dead transitions. [2023-08-30 05:57:46,744 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 45 transitions, 338 flow [2023-08-30 05:57:46,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:57:46,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:57:46,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 798 transitions. [2023-08-30 05:57:46,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4418604651162791 [2023-08-30 05:57:46,747 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 798 transitions. [2023-08-30 05:57:46,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 798 transitions. [2023-08-30 05:57:46,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:57:46,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 798 transitions. [2023-08-30 05:57:46,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 114.0) internal successors, (798), 7 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:46,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 258.0) internal successors, (2064), 8 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:46,752 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 258.0) internal successors, (2064), 8 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:46,753 INFO L175 Difference]: Start difference. First operand has 66 places, 39 transitions, 244 flow. Second operand 7 states and 798 transitions. [2023-08-30 05:57:46,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 45 transitions, 338 flow [2023-08-30 05:57:46,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 45 transitions, 290 flow, removed 2 selfloop flow, removed 10 redundant places. [2023-08-30 05:57:46,755 INFO L231 Difference]: Finished difference. Result has 60 places, 35 transitions, 185 flow [2023-08-30 05:57:46,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=185, PETRI_PLACES=60, PETRI_TRANSITIONS=35} [2023-08-30 05:57:46,756 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 11 predicate places. [2023-08-30 05:57:46,756 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 35 transitions, 185 flow [2023-08-30 05:57:46,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 111.75) internal successors, (894), 8 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:46,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:57:46,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:57:46,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 05:57:46,757 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:57:46,757 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:57:46,757 INFO L85 PathProgramCache]: Analyzing trace with hash 2075464244, now seen corresponding path program 11 times [2023-08-30 05:57:46,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:57:46,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697591501] [2023-08-30 05:57:46,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:57:46,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:57:46,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:57:46,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:57:46,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:57:46,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697591501] [2023-08-30 05:57:46,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697591501] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:57:46,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:57:46,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 05:57:46,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093463074] [2023-08-30 05:57:46,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:57:46,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 05:57:46,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:57:46,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 05:57:46,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 05:57:47,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 258 [2023-08-30 05:57:47,031 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 35 transitions, 185 flow. Second operand has 7 states, 7 states have (on average 109.28571428571429) internal successors, (765), 7 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:47,031 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:57:47,031 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 258 [2023-08-30 05:57:47,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:57:47,122 INFO L130 PetriNetUnfolder]: 41/108 cut-off events. [2023-08-30 05:57:47,122 INFO L131 PetriNetUnfolder]: For 188/200 co-relation queries the response was YES. [2023-08-30 05:57:47,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 373 conditions, 108 events. 41/108 cut-off events. For 188/200 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 244 event pairs, 8 based on Foata normal form. 10/118 useless extension candidates. Maximal degree in co-relation 360. Up to 60 conditions per place. [2023-08-30 05:57:47,124 INFO L137 encePairwiseOnDemand]: 252/258 looper letters, 24 selfloop transitions, 3 changer transitions 11/41 dead transitions. [2023-08-30 05:57:47,124 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 41 transitions, 259 flow [2023-08-30 05:57:47,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:57:47,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:57:47,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 779 transitions. [2023-08-30 05:57:47,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43133997785160577 [2023-08-30 05:57:47,127 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 779 transitions. [2023-08-30 05:57:47,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 779 transitions. [2023-08-30 05:57:47,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:57:47,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 779 transitions. [2023-08-30 05:57:47,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 111.28571428571429) internal successors, (779), 7 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:47,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 258.0) internal successors, (2064), 8 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:47,132 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 258.0) internal successors, (2064), 8 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:47,132 INFO L175 Difference]: Start difference. First operand has 60 places, 35 transitions, 185 flow. Second operand 7 states and 779 transitions. [2023-08-30 05:57:47,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 41 transitions, 259 flow [2023-08-30 05:57:47,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 41 transitions, 242 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-08-30 05:57:47,135 INFO L231 Difference]: Finished difference. Result has 57 places, 28 transitions, 123 flow [2023-08-30 05:57:47,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=123, PETRI_PLACES=57, PETRI_TRANSITIONS=28} [2023-08-30 05:57:47,136 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 8 predicate places. [2023-08-30 05:57:47,136 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 28 transitions, 123 flow [2023-08-30 05:57:47,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 109.28571428571429) internal successors, (765), 7 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:47,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:57:47,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:57:47,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 05:57:47,138 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:57:47,139 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:57:47,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1476419154, now seen corresponding path program 12 times [2023-08-30 05:57:47,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:57:47,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934578363] [2023-08-30 05:57:47,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:57:47,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:57:47,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:57:47,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:57:47,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:57:47,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934578363] [2023-08-30 05:57:47,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934578363] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:57:47,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:57:47,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 05:57:47,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470806957] [2023-08-30 05:57:47,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:57:47,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 05:57:47,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:57:47,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 05:57:47,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-30 05:57:47,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 258 [2023-08-30 05:57:47,344 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 28 transitions, 123 flow. Second operand has 7 states, 7 states have (on average 112.14285714285714) internal successors, (785), 7 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:47,344 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:57:47,344 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 258 [2023-08-30 05:57:47,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:57:47,390 INFO L130 PetriNetUnfolder]: 9/34 cut-off events. [2023-08-30 05:57:47,390 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2023-08-30 05:57:47,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 34 events. 9/34 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 41 event pairs, 0 based on Foata normal form. 4/38 useless extension candidates. Maximal degree in co-relation 112. Up to 9 conditions per place. [2023-08-30 05:57:47,391 INFO L137 encePairwiseOnDemand]: 252/258 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2023-08-30 05:57:47,391 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 20 transitions, 119 flow [2023-08-30 05:57:47,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:57:47,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:57:47,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 782 transitions. [2023-08-30 05:57:47,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4330011074197121 [2023-08-30 05:57:47,393 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 782 transitions. [2023-08-30 05:57:47,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 782 transitions. [2023-08-30 05:57:47,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:57:47,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 782 transitions. [2023-08-30 05:57:47,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 111.71428571428571) internal successors, (782), 7 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:47,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 258.0) internal successors, (2064), 8 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:47,398 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 258.0) internal successors, (2064), 8 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:47,398 INFO L175 Difference]: Start difference. First operand has 57 places, 28 transitions, 123 flow. Second operand 7 states and 782 transitions. [2023-08-30 05:57:47,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 20 transitions, 119 flow [2023-08-30 05:57:47,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 20 transitions, 98 flow, removed 3 selfloop flow, removed 9 redundant places. [2023-08-30 05:57:47,399 INFO L231 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2023-08-30 05:57:47,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=52, 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=7, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2023-08-30 05:57:47,399 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -11 predicate places. [2023-08-30 05:57:47,399 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2023-08-30 05:57:47,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 112.14285714285714) internal successors, (785), 7 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:47,402 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 17 remaining) [2023-08-30 05:57:47,402 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 17 remaining) [2023-08-30 05:57:47,403 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 17 remaining) [2023-08-30 05:57:47,403 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 17 remaining) [2023-08-30 05:57:47,403 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 17 remaining) [2023-08-30 05:57:47,403 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 17 remaining) [2023-08-30 05:57:47,403 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 17 remaining) [2023-08-30 05:57:47,403 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 17 remaining) [2023-08-30 05:57:47,404 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 17 remaining) [2023-08-30 05:57:47,404 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 17 remaining) [2023-08-30 05:57:47,404 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 17 remaining) [2023-08-30 05:57:47,404 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 17 remaining) [2023-08-30 05:57:47,404 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (4 of 17 remaining) [2023-08-30 05:57:47,404 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK (3 of 17 remaining) [2023-08-30 05:57:47,405 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 17 remaining) [2023-08-30 05:57:47,405 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 17 remaining) [2023-08-30 05:57:47,405 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 17 remaining) [2023-08-30 05:57:47,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-30 05:57:47,405 INFO L445 BasicCegarLoop]: Path program histogram: [12, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:57:47,408 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 05:57:47,408 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 05:57:47,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 05:57:47 BasicIcfg [2023-08-30 05:57:47,411 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 05:57:47,411 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 05:57:47,411 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 05:57:47,411 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 05:57:47,412 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:57:34" (3/4) ... [2023-08-30 05:57:47,414 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 05:57:47,418 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 05:57:47,419 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 05:57:47,419 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-08-30 05:57:47,423 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2023-08-30 05:57:47,423 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 05:57:47,423 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-30 05:57:47,423 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 05:57:47,450 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 05:57:47,450 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 05:57:47,451 INFO L158 Benchmark]: Toolchain (without parser) took 14155.36ms. Allocated memory was 69.2MB in the beginning and 195.0MB in the end (delta: 125.8MB). Free memory was 41.9MB in the beginning and 116.1MB in the end (delta: -74.1MB). Peak memory consumption was 51.5MB. Max. memory is 16.1GB. [2023-08-30 05:57:47,451 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 56.6MB. Free memory was 34.9MB in the beginning and 34.8MB in the end (delta: 44.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 05:57:47,451 INFO L158 Benchmark]: CACSL2BoogieTranslator took 266.17ms. Allocated memory is still 69.2MB. Free memory was 41.8MB in the beginning and 46.1MB in the end (delta: -4.3MB). Peak memory consumption was 11.4MB. Max. memory is 16.1GB. [2023-08-30 05:57:47,452 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.80ms. Allocated memory is still 69.2MB. Free memory was 45.8MB in the beginning and 44.0MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 05:57:47,452 INFO L158 Benchmark]: Boogie Preprocessor took 49.06ms. Allocated memory is still 69.2MB. Free memory was 44.0MB in the beginning and 42.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 05:57:47,452 INFO L158 Benchmark]: RCFGBuilder took 660.38ms. Allocated memory is still 69.2MB. Free memory was 42.4MB in the beginning and 38.0MB in the end (delta: 4.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-08-30 05:57:47,453 INFO L158 Benchmark]: TraceAbstraction took 13069.26ms. Allocated memory was 69.2MB in the beginning and 195.0MB in the end (delta: 125.8MB). Free memory was 37.3MB in the beginning and 119.2MB in the end (delta: -81.9MB). Peak memory consumption was 44.5MB. Max. memory is 16.1GB. [2023-08-30 05:57:47,453 INFO L158 Benchmark]: Witness Printer took 39.13ms. Allocated memory is still 195.0MB. Free memory was 119.2MB in the beginning and 116.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 05:57:47,454 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 56.6MB. Free memory was 34.9MB in the beginning and 34.8MB in the end (delta: 44.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 266.17ms. Allocated memory is still 69.2MB. Free memory was 41.8MB in the beginning and 46.1MB in the end (delta: -4.3MB). Peak memory consumption was 11.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.80ms. Allocated memory is still 69.2MB. Free memory was 45.8MB in the beginning and 44.0MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 49.06ms. Allocated memory is still 69.2MB. Free memory was 44.0MB in the beginning and 42.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 660.38ms. Allocated memory is still 69.2MB. Free memory was 42.4MB in the beginning and 38.0MB in the end (delta: 4.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 13069.26ms. Allocated memory was 69.2MB in the beginning and 195.0MB in the end (delta: 125.8MB). Free memory was 37.3MB in the beginning and 119.2MB in the end (delta: -81.9MB). Peak memory consumption was 44.5MB. Max. memory is 16.1GB. * Witness Printer took 39.13ms. Allocated memory is still 195.0MB. Free memory was 119.2MB in the beginning and 116.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.2s, 136 PlacesBefore, 49 PlacesAfterwards, 128 TransitionsBefore, 39 TransitionsAfterwards, 930 CoEnabledTransitionPairs, 7 FixpointIterations, 83 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 123 TotalNumberOfCompositions, 4778 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2035, independent: 1856, independent conditional: 0, independent unconditional: 1856, dependent: 179, dependent conditional: 0, dependent unconditional: 179, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 492, independent: 473, independent conditional: 0, independent unconditional: 473, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2035, independent: 1383, independent conditional: 0, independent unconditional: 1383, dependent: 160, dependent conditional: 0, dependent unconditional: 160, unknown: 492, unknown conditional: 0, unknown unconditional: 492] , Statistics on independence cache: Total cache size (in pairs): 142, Positive cache size: 132, Positive conditional cache size: 0, Positive unconditional cache size: 132, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, 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: 124]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 101]: 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, 159 locations, 17 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 12.9s, OverallIterations: 19, TraceHistogramMax: 1, PathProgramHistogramMax: 12, EmptinessCheckTime: 0.0s, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1116 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 732 mSDsluCounter, 463 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 327 mSDsCounter, 152 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2769 IncrementalHoareTripleChecker+Invalid, 2921 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 152 mSolverCounterUnsat, 136 mSDtfsCounter, 2769 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 109 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=324occurred in iteration=15, InterpolantAutomatonStates: 111, 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, 0.5s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 343 NumberOfCodeBlocks, 343 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 324 ConstructedInterpolants, 0 QuantifiedInterpolants, 1698 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 19 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! [2023-08-30 05:57:47,470 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE