./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 BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/weaver/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 BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 02:32:28,936 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 02:32:28,938 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 02:32:28,972 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 02:32:28,974 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 02:32:28,976 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 02:32:28,978 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 02:32:28,980 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 02:32:28,981 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 02:32:28,985 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 02:32:28,985 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 02:32:28,987 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 02:32:28,988 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 02:32:28,989 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 02:32:28,990 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 02:32:28,994 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 02:32:28,995 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 02:32:28,996 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 02:32:28,997 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 02:32:29,002 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 02:32:29,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 02:32:29,009 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 02:32:29,010 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 02:32:29,010 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 02:32:29,015 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 02:32:29,015 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 02:32:29,015 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 02:32:29,018 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 02:32:29,018 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 02:32:29,019 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 02:32:29,019 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 02:32:29,022 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 02:32:29,023 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 02:32:29,024 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 02:32:29,025 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 02:32:29,026 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 02:32:29,026 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 02:32:29,026 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 02:32:29,026 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 02:32:29,027 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 02:32:29,027 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 02:32:29,029 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-09-01 02:32:29,056 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 02:32:29,057 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 02:32:29,058 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 02:32:29,058 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 02:32:29,058 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 02:32:29,058 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 02:32:29,059 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 02:32:29,059 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 02:32:29,059 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 02:32:29,059 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 02:32:29,060 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 02:32:29,060 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 02:32:29,060 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 02:32:29,060 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 02:32:29,061 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 02:32:29,061 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 02:32:29,061 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 02:32:29,061 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 02:32:29,061 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 02:32:29,061 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 02:32:29,061 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 02:32:29,062 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 02:32:29,062 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 02:32:29,062 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 02:32:29,062 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 02:32:29,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 02:32:29,062 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 02:32:29,062 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 02:32:29,063 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 02:32:29,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 02:32:29,063 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 02:32:29,063 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 02:32:29,063 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 02:32:29,063 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 02:32:29,063 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c947ca303cec71cbb6edeb9f866ed53067014e89778e5c242eb251405d7ab484 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 02:32:29,277 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 02:32:29,293 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 02:32:29,294 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 02:32:29,295 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 02:32:29,295 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 02:32:29,296 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-3.wvr.c [2023-09-01 02:32:30,123 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 02:32:30,293 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 02:32:30,293 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-3.wvr.c [2023-09-01 02:32:30,299 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96c81060e/a04dc6d573064c9d8fe3522e0a958e7f/FLAG4ed761c6a [2023-09-01 02:32:30,309 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96c81060e/a04dc6d573064c9d8fe3522e0a958e7f [2023-09-01 02:32:30,318 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 02:32:30,319 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 02:32:30,321 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 02:32:30,321 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 02:32:30,326 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 02:32:30,326 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 02:32:30" (1/1) ... [2023-09-01 02:32:30,327 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f4ddb1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:32:30, skipping insertion in model container [2023-09-01 02:32:30,329 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 02:32:30" (1/1) ... [2023-09-01 02:32:30,333 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 02:32:30,351 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 02:32:30,486 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] [2023-09-01 02:32:30,492 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 02:32:30,500 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 02:32:30,531 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] [2023-09-01 02:32:30,533 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 02:32:30,539 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 02:32:30,540 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 02:32:30,545 INFO L208 MainTranslator]: Completed translation [2023-09-01 02:32:30,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:32:30 WrapperNode [2023-09-01 02:32:30,545 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 02:32:30,546 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 02:32:30,546 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 02:32:30,546 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 02:32:30,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:32:30" (1/1) ... [2023-09-01 02:32:30,565 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:32:30" (1/1) ... [2023-09-01 02:32:30,588 INFO L138 Inliner]: procedures = 22, calls = 55, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 165 [2023-09-01 02:32:30,588 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 02:32:30,589 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 02:32:30,589 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 02:32:30,589 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 02:32:30,595 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:32:30" (1/1) ... [2023-09-01 02:32:30,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:32:30" (1/1) ... [2023-09-01 02:32:30,606 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:32:30" (1/1) ... [2023-09-01 02:32:30,606 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:32:30" (1/1) ... [2023-09-01 02:32:30,614 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:32:30" (1/1) ... [2023-09-01 02:32:30,619 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:32:30" (1/1) ... [2023-09-01 02:32:30,620 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:32:30" (1/1) ... [2023-09-01 02:32:30,622 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:32:30" (1/1) ... [2023-09-01 02:32:30,623 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 02:32:30,624 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 02:32:30,624 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 02:32:30,624 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 02:32:30,625 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:32:30" (1/1) ... [2023-09-01 02:32:30,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 02:32:30,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:32:30,652 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 02:32:30,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 02:32:30,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 02:32:30,681 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 02:32:30,681 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 02:32:30,682 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 02:32:30,683 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 02:32:30,683 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 02:32:30,683 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 02:32:30,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 02:32:30,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 02:32:30,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 02:32:30,684 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 02:32:30,684 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 02:32:30,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 02:32:30,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 02:32:30,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 02:32:30,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 02:32:30,686 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 02:32:30,796 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 02:32:30,797 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 02:32:31,063 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 02:32:31,114 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 02:32:31,114 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-09-01 02:32:31,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 02:32:31 BoogieIcfgContainer [2023-09-01 02:32:31,116 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 02:32:31,117 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 02:32:31,117 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 02:32:31,119 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 02:32:31,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 02:32:30" (1/3) ... [2023-09-01 02:32:31,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d8a2c88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 02:32:31, skipping insertion in model container [2023-09-01 02:32:31,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:32:30" (2/3) ... [2023-09-01 02:32:31,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d8a2c88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 02:32:31, skipping insertion in model container [2023-09-01 02:32:31,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 02:32:31" (3/3) ... [2023-09-01 02:32:31,122 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-3.wvr.c [2023-09-01 02:32:31,134 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 02:32:31,134 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-09-01 02:32:31,134 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 02:32:31,226 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 02:32:31,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 135 transitions, 294 flow [2023-09-01 02:32:31,336 INFO L130 PetriNetUnfolder]: 2/132 cut-off events. [2023-09-01 02:32:31,336 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 02:32:31,339 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. [2023-09-01 02:32:31,340 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 135 transitions, 294 flow [2023-09-01 02:32:31,346 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 128 transitions, 274 flow [2023-09-01 02:32:31,349 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 02:32:31,359 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 136 places, 128 transitions, 274 flow [2023-09-01 02:32:31,362 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 136 places, 128 transitions, 274 flow [2023-09-01 02:32:31,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 128 transitions, 274 flow [2023-09-01 02:32:31,400 INFO L130 PetriNetUnfolder]: 2/128 cut-off events. [2023-09-01 02:32:31,401 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 02:32:31,402 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. [2023-09-01 02:32:31,403 INFO L119 LiptonReduction]: Number of co-enabled transitions 930 [2023-09-01 02:32:35,706 INFO L134 LiptonReduction]: Checked pairs total: 4778 [2023-09-01 02:32:35,706 INFO L136 LiptonReduction]: Total number of compositions: 123 [2023-09-01 02:32:35,715 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 02:32:35,719 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;@6fca437e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 02:32:35,720 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-09-01 02:32:35,720 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-09-01 02:32:35,721 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 02:32:35,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:32:35,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-09-01 02:32:35,721 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)] === [2023-09-01 02:32:35,724 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:32:35,724 INFO L85 PathProgramCache]: Analyzing trace with hash 532, now seen corresponding path program 1 times [2023-09-01 02:32:35,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:32:35,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228617514] [2023-09-01 02:32:35,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:32:35,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:32:35,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:32:35,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:32:35,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:32:35,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228617514] [2023-09-01 02:32:35,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228617514] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:32:35,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:32:35,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-09-01 02:32:35,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862543941] [2023-09-01 02:32:35,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:32:35,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-09-01 02:32:35,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:32:35,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-09-01 02:32:35,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-09-01 02:32:35,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 258 [2023-09-01 02:32:35,814 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) [2023-09-01 02:32:35,814 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:32:35,814 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 258 [2023-09-01 02:32:35,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:32:35,947 INFO L130 PetriNetUnfolder]: 729/1236 cut-off events. [2023-09-01 02:32:35,947 INFO L131 PetriNetUnfolder]: For 47/47 co-relation queries the response was YES. [2023-09-01 02:32:35,950 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. [2023-09-01 02:32:35,954 INFO L137 encePairwiseOnDemand]: 255/258 looper letters, 32 selfloop transitions, 0 changer transitions 0/36 dead transitions. [2023-09-01 02:32:35,954 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 36 transitions, 154 flow [2023-09-01 02:32:35,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-09-01 02:32:35,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-09-01 02:32:35,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 269 transitions. [2023-09-01 02:32:35,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5213178294573644 [2023-09-01 02:32:35,964 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 269 transitions. [2023-09-01 02:32:35,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 269 transitions. [2023-09-01 02:32:35,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:32:35,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 269 transitions. [2023-09-01 02:32:35,968 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) [2023-09-01 02:32:35,971 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) [2023-09-01 02:32:35,971 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) [2023-09-01 02:32:35,972 INFO L175 Difference]: Start difference. First operand has 49 places, 39 transitions, 96 flow. Second operand 2 states and 269 transitions. [2023-09-01 02:32:35,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 36 transitions, 154 flow [2023-09-01 02:32:35,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 36 transitions, 142 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-09-01 02:32:35,976 INFO L231 Difference]: Finished difference. Result has 41 places, 36 transitions, 78 flow [2023-09-01 02:32:35,978 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} [2023-09-01 02:32:35,979 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -8 predicate places. [2023-09-01 02:32:35,980 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 36 transitions, 78 flow [2023-09-01 02:32:35,980 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) [2023-09-01 02:32:35,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:32:35,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 02:32:35,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 02:32:35,981 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)] === [2023-09-01 02:32:35,981 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:32:35,981 INFO L85 PathProgramCache]: Analyzing trace with hash 524284, now seen corresponding path program 1 times [2023-09-01 02:32:35,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:32:35,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062535101] [2023-09-01 02:32:35,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:32:35,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:32:36,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:32:36,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:32:36,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:32:36,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062535101] [2023-09-01 02:32:36,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062535101] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:32:36,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:32:36,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 02:32:36,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100480185] [2023-09-01 02:32:36,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:32:36,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 02:32:36,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:32:36,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 02:32:36,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 02:32:36,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 258 [2023-09-01 02:32:36,253 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) [2023-09-01 02:32:36,253 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:32:36,253 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 258 [2023-09-01 02:32:36,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:32:36,362 INFO L130 PetriNetUnfolder]: 702/1187 cut-off events. [2023-09-01 02:32:36,363 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-09-01 02:32:36,365 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. [2023-09-01 02:32:36,370 INFO L137 encePairwiseOnDemand]: 255/258 looper letters, 29 selfloop transitions, 1 changer transitions 0/34 dead transitions. [2023-09-01 02:32:36,371 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 34 transitions, 134 flow [2023-09-01 02:32:36,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:32:36,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:32:36,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 368 transitions. [2023-09-01 02:32:36,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4754521963824289 [2023-09-01 02:32:36,376 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 368 transitions. [2023-09-01 02:32:36,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 368 transitions. [2023-09-01 02:32:36,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:32:36,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 368 transitions. [2023-09-01 02:32:36,379 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) [2023-09-01 02:32:36,381 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) [2023-09-01 02:32:36,382 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) [2023-09-01 02:32:36,382 INFO L175 Difference]: Start difference. First operand has 41 places, 36 transitions, 78 flow. Second operand 3 states and 368 transitions. [2023-09-01 02:32:36,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 34 transitions, 134 flow [2023-09-01 02:32:36,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 34 transitions, 134 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 02:32:36,384 INFO L231 Difference]: Finished difference. Result has 41 places, 34 transitions, 76 flow [2023-09-01 02:32:36,384 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} [2023-09-01 02:32:36,384 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -8 predicate places. [2023-09-01 02:32:36,385 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 34 transitions, 76 flow [2023-09-01 02:32:36,385 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) [2023-09-01 02:32:36,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:32:36,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 02:32:36,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 02:32:36,386 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)] === [2023-09-01 02:32:36,388 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:32:36,388 INFO L85 PathProgramCache]: Analyzing trace with hash 524282, now seen corresponding path program 1 times [2023-09-01 02:32:36,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:32:36,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657300841] [2023-09-01 02:32:36,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:32:36,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:32:36,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:32:36,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:32:36,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:32:36,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657300841] [2023-09-01 02:32:36,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657300841] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:32:36,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:32:36,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 02:32:36,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52516970] [2023-09-01 02:32:36,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:32:36,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 02:32:36,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:32:36,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 02:32:36,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 02:32:36,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 258 [2023-09-01 02:32:36,508 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) [2023-09-01 02:32:36,508 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:32:36,509 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 258 [2023-09-01 02:32:36,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:32:36,595 INFO L130 PetriNetUnfolder]: 675/1138 cut-off events. [2023-09-01 02:32:36,596 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-09-01 02:32:36,598 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. [2023-09-01 02:32:36,601 INFO L137 encePairwiseOnDemand]: 255/258 looper letters, 27 selfloop transitions, 1 changer transitions 0/32 dead transitions. [2023-09-01 02:32:36,602 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 32 transitions, 128 flow [2023-09-01 02:32:36,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:32:36,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:32:36,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 351 transitions. [2023-09-01 02:32:36,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45348837209302323 [2023-09-01 02:32:36,603 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 351 transitions. [2023-09-01 02:32:36,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 351 transitions. [2023-09-01 02:32:36,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:32:36,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 351 transitions. [2023-09-01 02:32:36,604 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) [2023-09-01 02:32:36,605 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) [2023-09-01 02:32:36,606 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) [2023-09-01 02:32:36,606 INFO L175 Difference]: Start difference. First operand has 41 places, 34 transitions, 76 flow. Second operand 3 states and 351 transitions. [2023-09-01 02:32:36,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 32 transitions, 128 flow [2023-09-01 02:32:36,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 32 transitions, 127 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:32:36,608 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 73 flow [2023-09-01 02:32:36,608 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} [2023-09-01 02:32:36,609 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -9 predicate places. [2023-09-01 02:32:36,611 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 73 flow [2023-09-01 02:32:36,611 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) [2023-09-01 02:32:36,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:32:36,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 02:32:36,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 02:32:36,612 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:32:36,612 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:32:36,612 INFO L85 PathProgramCache]: Analyzing trace with hash 503847967, now seen corresponding path program 1 times [2023-09-01 02:32:36,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:32:36,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917976385] [2023-09-01 02:32:36,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:32:36,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:32:36,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:32:36,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:32:36,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:32:36,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917976385] [2023-09-01 02:32:36,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917976385] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:32:36,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:32:36,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 02:32:36,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213089048] [2023-09-01 02:32:36,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:32:36,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 02:32:36,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:32:36,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 02:32:36,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 02:32:36,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 258 [2023-09-01 02:32:36,696 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) [2023-09-01 02:32:36,696 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:32:36,696 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 258 [2023-09-01 02:32:36,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:32:36,779 INFO L130 PetriNetUnfolder]: 648/1087 cut-off events. [2023-09-01 02:32:36,779 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-09-01 02:32:36,781 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. [2023-09-01 02:32:36,785 INFO L137 encePairwiseOnDemand]: 255/258 looper letters, 25 selfloop transitions, 1 changer transitions 0/30 dead transitions. [2023-09-01 02:32:36,785 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 30 transitions, 121 flow [2023-09-01 02:32:36,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:32:36,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:32:36,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 352 transitions. [2023-09-01 02:32:36,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45478036175710596 [2023-09-01 02:32:36,788 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 352 transitions. [2023-09-01 02:32:36,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 352 transitions. [2023-09-01 02:32:36,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:32:36,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 352 transitions. [2023-09-01 02:32:36,789 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) [2023-09-01 02:32:36,790 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) [2023-09-01 02:32:36,791 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) [2023-09-01 02:32:36,791 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 73 flow. Second operand 3 states and 352 transitions. [2023-09-01 02:32:36,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 30 transitions, 121 flow [2023-09-01 02:32:36,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 30 transitions, 120 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:32:36,792 INFO L231 Difference]: Finished difference. Result has 39 places, 30 transitions, 70 flow [2023-09-01 02:32:36,793 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} [2023-09-01 02:32:36,794 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -10 predicate places. [2023-09-01 02:32:36,794 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 30 transitions, 70 flow [2023-09-01 02:32:36,794 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) [2023-09-01 02:32:36,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:32:36,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 02:32:36,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 02:32:36,795 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:32:36,795 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:32:36,795 INFO L85 PathProgramCache]: Analyzing trace with hash 503847968, now seen corresponding path program 1 times [2023-09-01 02:32:36,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:32:36,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110215097] [2023-09-01 02:32:36,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:32:36,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:32:36,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:32:36,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:32:36,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:32:36,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110215097] [2023-09-01 02:32:36,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110215097] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:32:36,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:32:36,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 02:32:36,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247975099] [2023-09-01 02:32:36,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:32:36,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 02:32:36,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:32:36,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 02:32:36,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 02:32:36,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 258 [2023-09-01 02:32:36,872 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) [2023-09-01 02:32:36,872 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:32:36,872 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 258 [2023-09-01 02:32:36,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:32:36,933 INFO L130 PetriNetUnfolder]: 621/1036 cut-off events. [2023-09-01 02:32:36,934 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-09-01 02:32:36,935 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. [2023-09-01 02:32:36,949 INFO L137 encePairwiseOnDemand]: 255/258 looper letters, 23 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2023-09-01 02:32:36,949 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 28 transitions, 114 flow [2023-09-01 02:32:36,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:32:36,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:32:36,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 347 transitions. [2023-09-01 02:32:36,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4483204134366925 [2023-09-01 02:32:36,951 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 347 transitions. [2023-09-01 02:32:36,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 347 transitions. [2023-09-01 02:32:36,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:32:36,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 347 transitions. [2023-09-01 02:32:36,952 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) [2023-09-01 02:32:36,953 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) [2023-09-01 02:32:36,953 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) [2023-09-01 02:32:36,953 INFO L175 Difference]: Start difference. First operand has 39 places, 30 transitions, 70 flow. Second operand 3 states and 347 transitions. [2023-09-01 02:32:36,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 28 transitions, 114 flow [2023-09-01 02:32:36,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 28 transitions, 113 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:32:36,954 INFO L231 Difference]: Finished difference. Result has 38 places, 28 transitions, 67 flow [2023-09-01 02:32:36,955 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} [2023-09-01 02:32:36,955 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -11 predicate places. [2023-09-01 02:32:36,955 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 28 transitions, 67 flow [2023-09-01 02:32:36,955 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) [2023-09-01 02:32:36,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:32:36,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:32:36,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 02:32:36,956 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:32:36,956 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:32:36,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1133397031, now seen corresponding path program 1 times [2023-09-01 02:32:36,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:32:36,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087094824] [2023-09-01 02:32:36,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:32:36,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:32:36,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:32:37,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:32:37,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:32:37,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087094824] [2023-09-01 02:32:37,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087094824] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:32:37,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:32:37,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 02:32:37,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547899930] [2023-09-01 02:32:37,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:32:37,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 02:32:37,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:32:37,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 02:32:37,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-09-01 02:32:37,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 258 [2023-09-01 02:32:37,119 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) [2023-09-01 02:32:37,119 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:32:37,119 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 258 [2023-09-01 02:32:37,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:32:37,190 INFO L130 PetriNetUnfolder]: 477/812 cut-off events. [2023-09-01 02:32:37,190 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-09-01 02:32:37,191 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. [2023-09-01 02:32:37,193 INFO L137 encePairwiseOnDemand]: 256/258 looper letters, 22 selfloop transitions, 1 changer transitions 0/27 dead transitions. [2023-09-01 02:32:37,193 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 27 transitions, 111 flow [2023-09-01 02:32:37,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:32:37,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:32:37,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 315 transitions. [2023-09-01 02:32:37,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4069767441860465 [2023-09-01 02:32:37,195 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 315 transitions. [2023-09-01 02:32:37,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 315 transitions. [2023-09-01 02:32:37,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:32:37,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 315 transitions. [2023-09-01 02:32:37,196 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) [2023-09-01 02:32:37,197 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) [2023-09-01 02:32:37,198 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) [2023-09-01 02:32:37,198 INFO L175 Difference]: Start difference. First operand has 38 places, 28 transitions, 67 flow. Second operand 3 states and 315 transitions. [2023-09-01 02:32:37,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 27 transitions, 111 flow [2023-09-01 02:32:37,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 27 transitions, 110 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:32:37,199 INFO L231 Difference]: Finished difference. Result has 38 places, 27 transitions, 66 flow [2023-09-01 02:32:37,199 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} [2023-09-01 02:32:37,201 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -11 predicate places. [2023-09-01 02:32:37,201 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 27 transitions, 66 flow [2023-09-01 02:32:37,202 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) [2023-09-01 02:32:37,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:32:37,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:32:37,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 02:32:37,203 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:32:37,203 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:32:37,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1133397033, now seen corresponding path program 1 times [2023-09-01 02:32:37,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:32:37,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667683187] [2023-09-01 02:32:37,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:32:37,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:32:37,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:32:37,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:32:37,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:32:37,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667683187] [2023-09-01 02:32:37,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667683187] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:32:37,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:32:37,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 02:32:37,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184465285] [2023-09-01 02:32:37,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:32:37,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 02:32:37,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:32:37,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 02:32:37,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 02:32:37,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 258 [2023-09-01 02:32:37,263 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) [2023-09-01 02:32:37,263 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:32:37,263 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 258 [2023-09-01 02:32:37,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:32:37,317 INFO L130 PetriNetUnfolder]: 333/588 cut-off events. [2023-09-01 02:32:37,317 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-09-01 02:32:37,318 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. [2023-09-01 02:32:37,320 INFO L137 encePairwiseOnDemand]: 256/258 looper letters, 21 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2023-09-01 02:32:37,320 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 26 transitions, 108 flow [2023-09-01 02:32:37,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:32:37,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:32:37,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 347 transitions. [2023-09-01 02:32:37,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4483204134366925 [2023-09-01 02:32:37,322 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 347 transitions. [2023-09-01 02:32:37,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 347 transitions. [2023-09-01 02:32:37,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:32:37,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 347 transitions. [2023-09-01 02:32:37,324 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) [2023-09-01 02:32:37,325 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) [2023-09-01 02:32:37,326 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) [2023-09-01 02:32:37,326 INFO L175 Difference]: Start difference. First operand has 38 places, 27 transitions, 66 flow. Second operand 3 states and 347 transitions. [2023-09-01 02:32:37,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 26 transitions, 108 flow [2023-09-01 02:32:37,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 26 transitions, 107 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:32:37,327 INFO L231 Difference]: Finished difference. Result has 38 places, 26 transitions, 65 flow [2023-09-01 02:32:37,327 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} [2023-09-01 02:32:37,328 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -11 predicate places. [2023-09-01 02:32:37,328 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 26 transitions, 65 flow [2023-09-01 02:32:37,328 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) [2023-09-01 02:32:37,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:32:37,328 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] [2023-09-01 02:32:37,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 02:32:37,329 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:32:37,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:32:37,329 INFO L85 PathProgramCache]: Analyzing trace with hash 291274630, now seen corresponding path program 1 times [2023-09-01 02:32:37,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:32:37,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900169469] [2023-09-01 02:32:37,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:32:37,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:32:37,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:32:37,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:32:37,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:32:37,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900169469] [2023-09-01 02:32:37,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900169469] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:32:37,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:32:37,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 02:32:38,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579355517] [2023-09-01 02:32:38,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:32:38,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 02:32:38,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:32:38,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 02:32:38,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 02:32:38,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 258 [2023-09-01 02:32:38,022 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) [2023-09-01 02:32:38,022 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:32:38,022 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 258 [2023-09-01 02:32:38,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:32:38,220 INFO L130 PetriNetUnfolder]: 1139/1840 cut-off events. [2023-09-01 02:32:38,220 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-09-01 02:32:38,224 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. [2023-09-01 02:32:38,228 INFO L137 encePairwiseOnDemand]: 252/258 looper letters, 53 selfloop transitions, 7 changer transitions 17/77 dead transitions. [2023-09-01 02:32:38,228 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 77 transitions, 331 flow [2023-09-01 02:32:38,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 02:32:38,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 02:32:38,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 624 transitions. [2023-09-01 02:32:38,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48372093023255813 [2023-09-01 02:32:38,230 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 624 transitions. [2023-09-01 02:32:38,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 624 transitions. [2023-09-01 02:32:38,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:32:38,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 624 transitions. [2023-09-01 02:32:38,232 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) [2023-09-01 02:32:38,233 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) [2023-09-01 02:32:38,234 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) [2023-09-01 02:32:38,234 INFO L175 Difference]: Start difference. First operand has 38 places, 26 transitions, 65 flow. Second operand 5 states and 624 transitions. [2023-09-01 02:32:38,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 77 transitions, 331 flow [2023-09-01 02:32:38,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 77 transitions, 330 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:32:38,236 INFO L231 Difference]: Finished difference. Result has 44 places, 31 transitions, 109 flow [2023-09-01 02:32:38,236 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} [2023-09-01 02:32:38,236 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -5 predicate places. [2023-09-01 02:32:38,237 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 31 transitions, 109 flow [2023-09-01 02:32:38,237 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) [2023-09-01 02:32:38,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:32:38,237 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] [2023-09-01 02:32:38,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 02:32:38,238 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:32:38,238 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:32:38,238 INFO L85 PathProgramCache]: Analyzing trace with hash 266636022, now seen corresponding path program 2 times [2023-09-01 02:32:38,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:32:38,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120538086] [2023-09-01 02:32:38,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:32:38,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:32:38,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:32:38,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:32:38,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:32:38,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120538086] [2023-09-01 02:32:38,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120538086] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:32:38,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:32:38,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 02:32:38,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614820197] [2023-09-01 02:32:38,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:32:38,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 02:32:38,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:32:38,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 02:32:38,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-09-01 02:32:38,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 258 [2023-09-01 02:32:38,396 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) [2023-09-01 02:32:38,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:32:38,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 258 [2023-09-01 02:32:38,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:32:38,522 INFO L130 PetriNetUnfolder]: 374/707 cut-off events. [2023-09-01 02:32:38,523 INFO L131 PetriNetUnfolder]: For 59/61 co-relation queries the response was YES. [2023-09-01 02:32:38,524 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. [2023-09-01 02:32:38,526 INFO L137 encePairwiseOnDemand]: 250/258 looper letters, 50 selfloop transitions, 15 changer transitions 0/74 dead transitions. [2023-09-01 02:32:38,526 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 74 transitions, 330 flow [2023-09-01 02:32:38,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 02:32:38,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 02:32:38,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 830 transitions. [2023-09-01 02:32:38,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45957918050941304 [2023-09-01 02:32:38,528 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 830 transitions. [2023-09-01 02:32:38,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 830 transitions. [2023-09-01 02:32:38,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:32:38,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 830 transitions. [2023-09-01 02:32:38,530 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) [2023-09-01 02:32:38,532 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) [2023-09-01 02:32:38,532 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) [2023-09-01 02:32:38,532 INFO L175 Difference]: Start difference. First operand has 44 places, 31 transitions, 109 flow. Second operand 7 states and 830 transitions. [2023-09-01 02:32:38,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 74 transitions, 330 flow [2023-09-01 02:32:38,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 74 transitions, 319 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-09-01 02:32:38,537 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 188 flow [2023-09-01 02:32:38,537 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} [2023-09-01 02:32:38,538 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 3 predicate places. [2023-09-01 02:32:38,538 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 188 flow [2023-09-01 02:32:38,538 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) [2023-09-01 02:32:38,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:32:38,539 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] [2023-09-01 02:32:38,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 02:32:38,539 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:32:38,539 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:32:38,539 INFO L85 PathProgramCache]: Analyzing trace with hash -819796504, now seen corresponding path program 3 times [2023-09-01 02:32:38,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:32:38,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943868186] [2023-09-01 02:32:38,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:32:38,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:32:38,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:32:38,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:32:38,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:32:38,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943868186] [2023-09-01 02:32:38,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943868186] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:32:38,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:32:38,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 02:32:38,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597612236] [2023-09-01 02:32:38,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:32:38,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 02:32:38,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:32:38,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 02:32:38,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-09-01 02:32:38,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 258 [2023-09-01 02:32:38,680 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) [2023-09-01 02:32:38,680 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:32:38,680 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 258 [2023-09-01 02:32:38,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:32:38,782 INFO L130 PetriNetUnfolder]: 283/562 cut-off events. [2023-09-01 02:32:38,782 INFO L131 PetriNetUnfolder]: For 335/373 co-relation queries the response was YES. [2023-09-01 02:32:38,783 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. [2023-09-01 02:32:38,785 INFO L137 encePairwiseOnDemand]: 250/258 looper letters, 36 selfloop transitions, 11 changer transitions 12/68 dead transitions. [2023-09-01 02:32:38,785 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 68 transitions, 371 flow [2023-09-01 02:32:38,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 02:32:38,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 02:32:38,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 822 transitions. [2023-09-01 02:32:38,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45514950166112955 [2023-09-01 02:32:38,788 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 822 transitions. [2023-09-01 02:32:38,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 822 transitions. [2023-09-01 02:32:38,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:32:38,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 822 transitions. [2023-09-01 02:32:38,789 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) [2023-09-01 02:32:38,791 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) [2023-09-01 02:32:38,791 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) [2023-09-01 02:32:38,791 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 188 flow. Second operand 7 states and 822 transitions. [2023-09-01 02:32:38,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 68 transitions, 371 flow [2023-09-01 02:32:38,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 68 transitions, 371 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 02:32:38,794 INFO L231 Difference]: Finished difference. Result has 62 places, 42 transitions, 215 flow [2023-09-01 02:32:38,794 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} [2023-09-01 02:32:38,794 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 13 predicate places. [2023-09-01 02:32:38,794 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 42 transitions, 215 flow [2023-09-01 02:32:38,795 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) [2023-09-01 02:32:38,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:32:38,795 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] [2023-09-01 02:32:38,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 02:32:38,795 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:32:38,796 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:32:38,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1292674230, now seen corresponding path program 4 times [2023-09-01 02:32:38,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:32:38,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739580471] [2023-09-01 02:32:38,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:32:38,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:32:38,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:32:38,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:32:38,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:32:38,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739580471] [2023-09-01 02:32:38,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739580471] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:32:38,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:32:38,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 02:32:38,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363683101] [2023-09-01 02:32:38,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:32:38,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 02:32:38,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:32:38,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 02:32:38,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-09-01 02:32:38,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 258 [2023-09-01 02:32:38,951 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) [2023-09-01 02:32:38,951 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:32:38,951 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 258 [2023-09-01 02:32:38,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:32:39,033 INFO L130 PetriNetUnfolder]: 175/370 cut-off events. [2023-09-01 02:32:39,033 INFO L131 PetriNetUnfolder]: For 412/430 co-relation queries the response was YES. [2023-09-01 02:32:39,034 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. [2023-09-01 02:32:39,035 INFO L137 encePairwiseOnDemand]: 252/258 looper letters, 39 selfloop transitions, 8 changer transitions 0/55 dead transitions. [2023-09-01 02:32:39,035 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 55 transitions, 358 flow [2023-09-01 02:32:39,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 02:32:39,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 02:32:39,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 586 transitions. [2023-09-01 02:32:39,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4542635658914729 [2023-09-01 02:32:39,037 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 586 transitions. [2023-09-01 02:32:39,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 586 transitions. [2023-09-01 02:32:39,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:32:39,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 586 transitions. [2023-09-01 02:32:39,038 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) [2023-09-01 02:32:39,039 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) [2023-09-01 02:32:39,040 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) [2023-09-01 02:32:39,040 INFO L175 Difference]: Start difference. First operand has 62 places, 42 transitions, 215 flow. Second operand 5 states and 586 transitions. [2023-09-01 02:32:39,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 55 transitions, 358 flow [2023-09-01 02:32:39,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 55 transitions, 336 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-09-01 02:32:39,042 INFO L231 Difference]: Finished difference. Result has 59 places, 43 transitions, 232 flow [2023-09-01 02:32:39,043 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} [2023-09-01 02:32:39,043 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 10 predicate places. [2023-09-01 02:32:39,043 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 43 transitions, 232 flow [2023-09-01 02:32:39,043 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) [2023-09-01 02:32:39,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:32:39,044 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] [2023-09-01 02:32:39,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 02:32:39,044 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:32:39,044 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:32:39,044 INFO L85 PathProgramCache]: Analyzing trace with hash -123018630, now seen corresponding path program 5 times [2023-09-01 02:32:39,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:32:39,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896807798] [2023-09-01 02:32:39,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:32:39,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:32:39,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:32:39,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:32:39,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:32:39,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896807798] [2023-09-01 02:32:39,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896807798] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:32:39,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:32:39,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 02:32:39,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009017833] [2023-09-01 02:32:39,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:32:39,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 02:32:39,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:32:39,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 02:32:39,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-09-01 02:32:39,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 258 [2023-09-01 02:32:39,205 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) [2023-09-01 02:32:39,205 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:32:39,205 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 258 [2023-09-01 02:32:39,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:32:39,371 INFO L130 PetriNetUnfolder]: 179/424 cut-off events. [2023-09-01 02:32:39,371 INFO L131 PetriNetUnfolder]: For 461/475 co-relation queries the response was YES. [2023-09-01 02:32:39,372 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. [2023-09-01 02:32:39,374 INFO L137 encePairwiseOnDemand]: 250/258 looper letters, 50 selfloop transitions, 19 changer transitions 18/93 dead transitions. [2023-09-01 02:32:39,374 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 93 transitions, 592 flow [2023-09-01 02:32:39,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 02:32:39,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 02:32:39,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1393 transitions. [2023-09-01 02:32:39,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44993540051679587 [2023-09-01 02:32:39,377 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1393 transitions. [2023-09-01 02:32:39,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1393 transitions. [2023-09-01 02:32:39,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:32:39,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1393 transitions. [2023-09-01 02:32:39,379 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) [2023-09-01 02:32:39,382 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) [2023-09-01 02:32:39,383 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) [2023-09-01 02:32:39,383 INFO L175 Difference]: Start difference. First operand has 59 places, 43 transitions, 232 flow. Second operand 12 states and 1393 transitions. [2023-09-01 02:32:39,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 93 transitions, 592 flow [2023-09-01 02:32:39,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 93 transitions, 576 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-09-01 02:32:39,385 INFO L231 Difference]: Finished difference. Result has 72 places, 48 transitions, 320 flow [2023-09-01 02:32:39,386 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} [2023-09-01 02:32:39,386 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 23 predicate places. [2023-09-01 02:32:39,386 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 48 transitions, 320 flow [2023-09-01 02:32:39,387 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) [2023-09-01 02:32:39,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:32:39,387 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] [2023-09-01 02:32:39,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 02:32:39,387 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:32:39,387 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:32:39,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1257210990, now seen corresponding path program 6 times [2023-09-01 02:32:39,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:32:39,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652148755] [2023-09-01 02:32:39,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:32:39,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:32:39,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:32:39,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:32:39,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:32:39,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652148755] [2023-09-01 02:32:39,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652148755] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:32:39,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:32:39,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 02:32:39,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217330342] [2023-09-01 02:32:39,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:32:39,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 02:32:39,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:32:39,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 02:32:39,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-09-01 02:32:39,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 258 [2023-09-01 02:32:39,539 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) [2023-09-01 02:32:39,539 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:32:39,539 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 258 [2023-09-01 02:32:39,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:32:39,676 INFO L130 PetriNetUnfolder]: 134/325 cut-off events. [2023-09-01 02:32:39,676 INFO L131 PetriNetUnfolder]: For 921/945 co-relation queries the response was YES. [2023-09-01 02:32:39,677 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. [2023-09-01 02:32:39,678 INFO L137 encePairwiseOnDemand]: 250/258 looper letters, 45 selfloop transitions, 17 changer transitions 6/74 dead transitions. [2023-09-01 02:32:39,678 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 74 transitions, 545 flow [2023-09-01 02:32:39,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 02:32:39,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 02:32:39,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1048 transitions. [2023-09-01 02:32:39,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45133505598621876 [2023-09-01 02:32:39,681 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1048 transitions. [2023-09-01 02:32:39,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1048 transitions. [2023-09-01 02:32:39,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:32:39,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1048 transitions. [2023-09-01 02:32:39,682 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) [2023-09-01 02:32:39,685 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) [2023-09-01 02:32:39,685 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) [2023-09-01 02:32:39,685 INFO L175 Difference]: Start difference. First operand has 72 places, 48 transitions, 320 flow. Second operand 9 states and 1048 transitions. [2023-09-01 02:32:39,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 74 transitions, 545 flow [2023-09-01 02:32:39,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 74 transitions, 500 flow, removed 16 selfloop flow, removed 6 redundant places. [2023-09-01 02:32:39,688 INFO L231 Difference]: Finished difference. Result has 71 places, 45 transitions, 297 flow [2023-09-01 02:32:39,688 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} [2023-09-01 02:32:39,688 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 22 predicate places. [2023-09-01 02:32:39,689 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 45 transitions, 297 flow [2023-09-01 02:32:39,689 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) [2023-09-01 02:32:39,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:32:39,689 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] [2023-09-01 02:32:39,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 02:32:39,689 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)] === [2023-09-01 02:32:39,689 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:32:39,690 INFO L85 PathProgramCache]: Analyzing trace with hash 475515792, now seen corresponding path program 7 times [2023-09-01 02:32:39,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:32:39,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111569252] [2023-09-01 02:32:39,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:32:39,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:32:39,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:32:39,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:32:39,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:32:39,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111569252] [2023-09-01 02:32:39,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111569252] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:32:39,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:32:39,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 02:32:39,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972434431] [2023-09-01 02:32:39,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:32:39,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 02:32:39,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:32:39,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 02:32:39,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-09-01 02:32:39,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 258 [2023-09-01 02:32:39,832 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) [2023-09-01 02:32:39,833 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:32:39,833 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 258 [2023-09-01 02:32:39,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:32:39,985 INFO L130 PetriNetUnfolder]: 116/281 cut-off events. [2023-09-01 02:32:39,985 INFO L131 PetriNetUnfolder]: For 580/596 co-relation queries the response was YES. [2023-09-01 02:32:39,986 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. [2023-09-01 02:32:39,987 INFO L137 encePairwiseOnDemand]: 250/258 looper letters, 39 selfloop transitions, 13 changer transitions 11/69 dead transitions. [2023-09-01 02:32:39,987 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 69 transitions, 498 flow [2023-09-01 02:32:39,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 02:32:39,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 02:32:39,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1044 transitions. [2023-09-01 02:32:39,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4496124031007752 [2023-09-01 02:32:39,991 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1044 transitions. [2023-09-01 02:32:39,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1044 transitions. [2023-09-01 02:32:39,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:32:39,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1044 transitions. [2023-09-01 02:32:39,993 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) [2023-09-01 02:32:39,997 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) [2023-09-01 02:32:39,998 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) [2023-09-01 02:32:39,998 INFO L175 Difference]: Start difference. First operand has 71 places, 45 transitions, 297 flow. Second operand 9 states and 1044 transitions. [2023-09-01 02:32:39,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 69 transitions, 498 flow [2023-09-01 02:32:40,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 69 transitions, 453 flow, removed 5 selfloop flow, removed 9 redundant places. [2023-09-01 02:32:40,002 INFO L231 Difference]: Finished difference. Result has 70 places, 41 transitions, 252 flow [2023-09-01 02:32:40,002 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} [2023-09-01 02:32:40,003 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 21 predicate places. [2023-09-01 02:32:40,003 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 41 transitions, 252 flow [2023-09-01 02:32:40,004 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) [2023-09-01 02:32:40,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:32:40,004 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] [2023-09-01 02:32:40,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-09-01 02:32:40,004 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)] === [2023-09-01 02:32:40,005 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:32:40,005 INFO L85 PathProgramCache]: Analyzing trace with hash -886332258, now seen corresponding path program 8 times [2023-09-01 02:32:40,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:32:40,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456730176] [2023-09-01 02:32:40,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:32:40,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:32:40,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:32:40,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:32:40,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:32:40,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456730176] [2023-09-01 02:32:40,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456730176] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:32:40,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:32:40,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 02:32:40,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392755428] [2023-09-01 02:32:40,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:32:40,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 02:32:40,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:32:40,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 02:32:40,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-09-01 02:32:40,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 258 [2023-09-01 02:32:40,197 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) [2023-09-01 02:32:40,197 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:32:40,197 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 258 [2023-09-01 02:32:40,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:32:40,282 INFO L130 PetriNetUnfolder]: 104/269 cut-off events. [2023-09-01 02:32:40,282 INFO L131 PetriNetUnfolder]: For 528/548 co-relation queries the response was YES. [2023-09-01 02:32:40,283 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. [2023-09-01 02:32:40,283 INFO L137 encePairwiseOnDemand]: 250/258 looper letters, 36 selfloop transitions, 21 changer transitions 5/68 dead transitions. [2023-09-01 02:32:40,284 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 68 transitions, 479 flow [2023-09-01 02:32:40,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 02:32:40,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 02:32:40,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 816 transitions. [2023-09-01 02:32:40,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45182724252491696 [2023-09-01 02:32:40,285 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 816 transitions. [2023-09-01 02:32:40,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 816 transitions. [2023-09-01 02:32:40,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:32:40,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 816 transitions. [2023-09-01 02:32:40,287 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) [2023-09-01 02:32:40,289 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) [2023-09-01 02:32:40,289 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) [2023-09-01 02:32:40,289 INFO L175 Difference]: Start difference. First operand has 70 places, 41 transitions, 252 flow. Second operand 7 states and 816 transitions. [2023-09-01 02:32:40,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 68 transitions, 479 flow [2023-09-01 02:32:40,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 68 transitions, 437 flow, removed 5 selfloop flow, removed 9 redundant places. [2023-09-01 02:32:40,291 INFO L231 Difference]: Finished difference. Result has 64 places, 48 transitions, 324 flow [2023-09-01 02:32:40,292 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} [2023-09-01 02:32:40,292 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 15 predicate places. [2023-09-01 02:32:40,292 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 48 transitions, 324 flow [2023-09-01 02:32:40,292 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) [2023-09-01 02:32:40,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:32:40,292 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] [2023-09-01 02:32:40,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-09-01 02:32:40,293 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)] === [2023-09-01 02:32:40,293 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:32:40,293 INFO L85 PathProgramCache]: Analyzing trace with hash 22650432, now seen corresponding path program 9 times [2023-09-01 02:32:40,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:32:40,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381969808] [2023-09-01 02:32:40,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:32:40,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:32:40,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:32:40,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:32:40,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:32:40,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381969808] [2023-09-01 02:32:40,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381969808] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:32:40,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:32:40,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 02:32:40,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140625138] [2023-09-01 02:32:40,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:32:40,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 02:32:40,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:32:40,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 02:32:40,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-09-01 02:32:40,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 258 [2023-09-01 02:32:40,487 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) [2023-09-01 02:32:40,487 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:32:40,487 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 258 [2023-09-01 02:32:40,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:32:40,585 INFO L130 PetriNetUnfolder]: 87/232 cut-off events. [2023-09-01 02:32:40,585 INFO L131 PetriNetUnfolder]: For 466/478 co-relation queries the response was YES. [2023-09-01 02:32:40,586 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. [2023-09-01 02:32:40,587 INFO L137 encePairwiseOnDemand]: 250/258 looper letters, 29 selfloop transitions, 16 changer transitions 18/67 dead transitions. [2023-09-01 02:32:40,587 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 67 transitions, 488 flow [2023-09-01 02:32:40,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 02:32:40,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 02:32:40,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1038 transitions. [2023-09-01 02:32:40,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470284237726098 [2023-09-01 02:32:40,589 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1038 transitions. [2023-09-01 02:32:40,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1038 transitions. [2023-09-01 02:32:40,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:32:40,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1038 transitions. [2023-09-01 02:32:40,592 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) [2023-09-01 02:32:40,594 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) [2023-09-01 02:32:40,594 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) [2023-09-01 02:32:40,594 INFO L175 Difference]: Start difference. First operand has 64 places, 48 transitions, 324 flow. Second operand 9 states and 1038 transitions. [2023-09-01 02:32:40,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 67 transitions, 488 flow [2023-09-01 02:32:40,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 67 transitions, 433 flow, removed 17 selfloop flow, removed 6 redundant places. [2023-09-01 02:32:40,597 INFO L231 Difference]: Finished difference. Result has 66 places, 39 transitions, 244 flow [2023-09-01 02:32:40,597 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} [2023-09-01 02:32:40,597 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 17 predicate places. [2023-09-01 02:32:40,598 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 39 transitions, 244 flow [2023-09-01 02:32:40,598 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) [2023-09-01 02:32:40,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:32:40,598 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] [2023-09-01 02:32:40,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-09-01 02:32:40,599 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)] === [2023-09-01 02:32:40,599 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:32:40,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1676023802, now seen corresponding path program 10 times [2023-09-01 02:32:40,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:32:40,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840665945] [2023-09-01 02:32:40,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:32:40,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:32:40,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:32:40,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:32:40,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:32:40,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840665945] [2023-09-01 02:32:40,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840665945] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:32:40,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:32:40,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 02:32:40,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287581407] [2023-09-01 02:32:40,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:32:40,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 02:32:40,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:32:40,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 02:32:40,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-09-01 02:32:40,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 258 [2023-09-01 02:32:40,793 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) [2023-09-01 02:32:40,793 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:32:40,793 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 258 [2023-09-01 02:32:40,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:32:40,886 INFO L130 PetriNetUnfolder]: 48/135 cut-off events. [2023-09-01 02:32:40,886 INFO L131 PetriNetUnfolder]: For 323/331 co-relation queries the response was YES. [2023-09-01 02:32:40,887 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. [2023-09-01 02:32:40,887 INFO L137 encePairwiseOnDemand]: 252/258 looper letters, 30 selfloop transitions, 5 changer transitions 6/45 dead transitions. [2023-09-01 02:32:40,887 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 45 transitions, 338 flow [2023-09-01 02:32:40,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 02:32:40,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 02:32:40,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 798 transitions. [2023-09-01 02:32:40,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4418604651162791 [2023-09-01 02:32:40,889 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 798 transitions. [2023-09-01 02:32:40,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 798 transitions. [2023-09-01 02:32:40,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:32:40,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 798 transitions. [2023-09-01 02:32:40,892 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) [2023-09-01 02:32:40,902 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) [2023-09-01 02:32:40,903 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) [2023-09-01 02:32:40,903 INFO L175 Difference]: Start difference. First operand has 66 places, 39 transitions, 244 flow. Second operand 7 states and 798 transitions. [2023-09-01 02:32:40,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 45 transitions, 338 flow [2023-09-01 02:32:40,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 45 transitions, 290 flow, removed 2 selfloop flow, removed 10 redundant places. [2023-09-01 02:32:40,905 INFO L231 Difference]: Finished difference. Result has 60 places, 35 transitions, 185 flow [2023-09-01 02:32:40,905 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} [2023-09-01 02:32:40,906 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 11 predicate places. [2023-09-01 02:32:40,906 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 35 transitions, 185 flow [2023-09-01 02:32:40,906 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) [2023-09-01 02:32:40,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:32:40,906 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] [2023-09-01 02:32:40,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-09-01 02:32:40,906 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)] === [2023-09-01 02:32:40,907 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:32:40,907 INFO L85 PathProgramCache]: Analyzing trace with hash 2075464244, now seen corresponding path program 11 times [2023-09-01 02:32:40,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:32:40,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035537263] [2023-09-01 02:32:40,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:32:40,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:32:40,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:32:41,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:32:41,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:32:41,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035537263] [2023-09-01 02:32:41,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035537263] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:32:41,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:32:41,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 02:32:41,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551439373] [2023-09-01 02:32:41,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:32:41,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 02:32:41,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:32:41,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 02:32:41,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-09-01 02:32:41,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 258 [2023-09-01 02:32:41,112 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) [2023-09-01 02:32:41,113 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:32:41,113 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 258 [2023-09-01 02:32:41,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:32:41,179 INFO L130 PetriNetUnfolder]: 41/108 cut-off events. [2023-09-01 02:32:41,180 INFO L131 PetriNetUnfolder]: For 188/200 co-relation queries the response was YES. [2023-09-01 02:32:41,180 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. [2023-09-01 02:32:41,180 INFO L137 encePairwiseOnDemand]: 252/258 looper letters, 24 selfloop transitions, 3 changer transitions 11/41 dead transitions. [2023-09-01 02:32:41,180 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 41 transitions, 259 flow [2023-09-01 02:32:41,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 02:32:41,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 02:32:41,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 779 transitions. [2023-09-01 02:32:41,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43133997785160577 [2023-09-01 02:32:41,182 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 779 transitions. [2023-09-01 02:32:41,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 779 transitions. [2023-09-01 02:32:41,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:32:41,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 779 transitions. [2023-09-01 02:32:41,184 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) [2023-09-01 02:32:41,185 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) [2023-09-01 02:32:41,185 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) [2023-09-01 02:32:41,185 INFO L175 Difference]: Start difference. First operand has 60 places, 35 transitions, 185 flow. Second operand 7 states and 779 transitions. [2023-09-01 02:32:41,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 41 transitions, 259 flow [2023-09-01 02:32:41,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 41 transitions, 242 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-09-01 02:32:41,187 INFO L231 Difference]: Finished difference. Result has 57 places, 28 transitions, 123 flow [2023-09-01 02:32:41,187 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} [2023-09-01 02:32:41,187 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 8 predicate places. [2023-09-01 02:32:41,187 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 28 transitions, 123 flow [2023-09-01 02:32:41,187 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) [2023-09-01 02:32:41,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:32:41,187 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] [2023-09-01 02:32:41,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-09-01 02:32:41,187 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)] === [2023-09-01 02:32:41,188 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:32:41,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1476419154, now seen corresponding path program 12 times [2023-09-01 02:32:41,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:32:41,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562790111] [2023-09-01 02:32:41,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:32:41,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:32:41,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:32:41,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:32:41,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:32:41,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562790111] [2023-09-01 02:32:41,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562790111] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:32:41,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:32:41,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 02:32:41,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234318003] [2023-09-01 02:32:41,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:32:41,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 02:32:41,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:32:41,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 02:32:41,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-09-01 02:32:41,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 258 [2023-09-01 02:32:41,346 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) [2023-09-01 02:32:41,346 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:32:41,346 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 258 [2023-09-01 02:32:41,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:32:41,392 INFO L130 PetriNetUnfolder]: 9/34 cut-off events. [2023-09-01 02:32:41,393 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2023-09-01 02:32:41,393 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. [2023-09-01 02:32:41,393 INFO L137 encePairwiseOnDemand]: 252/258 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2023-09-01 02:32:41,393 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 20 transitions, 119 flow [2023-09-01 02:32:41,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 02:32:41,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 02:32:41,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 782 transitions. [2023-09-01 02:32:41,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4330011074197121 [2023-09-01 02:32:41,396 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 782 transitions. [2023-09-01 02:32:41,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 782 transitions. [2023-09-01 02:32:41,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:32:41,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 782 transitions. [2023-09-01 02:32:41,398 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) [2023-09-01 02:32:41,400 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) [2023-09-01 02:32:41,400 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) [2023-09-01 02:32:41,400 INFO L175 Difference]: Start difference. First operand has 57 places, 28 transitions, 123 flow. Second operand 7 states and 782 transitions. [2023-09-01 02:32:41,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 20 transitions, 119 flow [2023-09-01 02:32:41,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 20 transitions, 98 flow, removed 3 selfloop flow, removed 9 redundant places. [2023-09-01 02:32:41,401 INFO L231 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2023-09-01 02:32:41,401 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} [2023-09-01 02:32:41,402 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -11 predicate places. [2023-09-01 02:32:41,402 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2023-09-01 02:32:41,402 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) [2023-09-01 02:32:41,404 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 17 remaining) [2023-09-01 02:32:41,405 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 17 remaining) [2023-09-01 02:32:41,405 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 17 remaining) [2023-09-01 02:32:41,407 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 17 remaining) [2023-09-01 02:32:41,407 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 17 remaining) [2023-09-01 02:32:41,407 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 17 remaining) [2023-09-01 02:32:41,407 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 17 remaining) [2023-09-01 02:32:41,407 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 17 remaining) [2023-09-01 02:32:41,407 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 17 remaining) [2023-09-01 02:32:41,407 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 17 remaining) [2023-09-01 02:32:41,408 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 17 remaining) [2023-09-01 02:32:41,408 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 17 remaining) [2023-09-01 02:32:41,408 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (4 of 17 remaining) [2023-09-01 02:32:41,408 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK (3 of 17 remaining) [2023-09-01 02:32:41,408 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 17 remaining) [2023-09-01 02:32:41,408 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 17 remaining) [2023-09-01 02:32:41,408 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 17 remaining) [2023-09-01 02:32:41,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-09-01 02:32:41,409 INFO L445 BasicCegarLoop]: Path program histogram: [12, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:32:41,411 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 02:32:41,411 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 02:32:41,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 02:32:41 BasicIcfg [2023-09-01 02:32:41,414 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 02:32:41,414 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 02:32:41,414 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 02:32:41,414 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 02:32:41,415 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 02:32:31" (3/4) ... [2023-09-01 02:32:41,416 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 02:32:41,420 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-09-01 02:32:41,420 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-09-01 02:32:41,420 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-09-01 02:32:41,424 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2023-09-01 02:32:41,424 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 02:32:41,425 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-09-01 02:32:41,425 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 02:32:41,454 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 02:32:41,454 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 02:32:41,454 INFO L158 Benchmark]: Toolchain (without parser) took 11135.55ms. Allocated memory was 75.5MB in the beginning and 237.0MB in the end (delta: 161.5MB). Free memory was 52.7MB in the beginning and 140.7MB in the end (delta: -88.0MB). Peak memory consumption was 75.5MB. Max. memory is 16.1GB. [2023-09-01 02:32:41,454 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 54.5MB. Free memory was 31.5MB in the beginning and 31.4MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 02:32:41,455 INFO L158 Benchmark]: CACSL2BoogieTranslator took 224.95ms. Allocated memory is still 75.5MB. Free memory was 52.4MB in the beginning and 41.4MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-09-01 02:32:41,455 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.31ms. Allocated memory is still 75.5MB. Free memory was 41.4MB in the beginning and 39.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 02:32:41,456 INFO L158 Benchmark]: Boogie Preprocessor took 34.40ms. Allocated memory is still 75.5MB. Free memory was 39.3MB in the beginning and 37.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 02:32:41,457 INFO L158 Benchmark]: RCFGBuilder took 491.88ms. Allocated memory is still 75.5MB. Free memory was 37.7MB in the beginning and 37.0MB in the end (delta: 703.3kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-09-01 02:32:41,457 INFO L158 Benchmark]: TraceAbstraction took 10296.98ms. Allocated memory was 75.5MB in the beginning and 237.0MB in the end (delta: 161.5MB). Free memory was 36.4MB in the beginning and 143.8MB in the end (delta: -107.4MB). Peak memory consumption was 56.7MB. Max. memory is 16.1GB. [2023-09-01 02:32:41,457 INFO L158 Benchmark]: Witness Printer took 39.69ms. Allocated memory is still 237.0MB. Free memory was 143.8MB in the beginning and 140.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 02:32:41,459 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 54.5MB. Free memory was 31.5MB in the beginning and 31.4MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 224.95ms. Allocated memory is still 75.5MB. Free memory was 52.4MB in the beginning and 41.4MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.31ms. Allocated memory is still 75.5MB. Free memory was 41.4MB in the beginning and 39.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.40ms. Allocated memory is still 75.5MB. Free memory was 39.3MB in the beginning and 37.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 491.88ms. Allocated memory is still 75.5MB. Free memory was 37.7MB in the beginning and 37.0MB in the end (delta: 703.3kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 10296.98ms. Allocated memory was 75.5MB in the beginning and 237.0MB in the end (delta: 161.5MB). Free memory was 36.4MB in the beginning and 143.8MB in the end (delta: -107.4MB). Peak memory consumption was 56.7MB. Max. memory is 16.1GB. * Witness Printer took 39.69ms. Allocated memory is still 237.0MB. Free memory was 143.8MB in the beginning and 140.7MB 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: 4.3s, 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: 10.2s, OverallIterations: 19, TraceHistogramMax: 1, PathProgramHistogramMax: 12, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1116 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 732 mSDsluCounter, 463 SdHoareTripleChecker+Invalid, 1.2s 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, 0.4s 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, 0.3s SatisfiabilityAnalysisTime, 2.3s 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! [2023-09-01 02:32:41,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE