./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.i --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/pthread-wmm/safe005_tso.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0f4fff0b2b9fbf3a1c21190a7a3a2488ff184faa22678fe9af5f2740e4422fce --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 [2023-08-31 23:31:02,647 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 23:31:02,649 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 23:31:02,667 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 23:31:02,668 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 23:31:02,669 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 23:31:02,670 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 23:31:02,671 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 23:31:02,672 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 23:31:02,673 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 23:31:02,673 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 23:31:02,674 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 23:31:02,674 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 23:31:02,675 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 23:31:02,676 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 23:31:02,677 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 23:31:02,677 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 23:31:02,678 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 23:31:02,679 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 23:31:02,680 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 23:31:02,681 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 23:31:02,682 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 23:31:02,683 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 23:31:02,683 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 23:31:02,685 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 23:31:02,686 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 23:31:02,686 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 23:31:02,687 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 23:31:02,687 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 23:31:02,688 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 23:31:02,688 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 23:31:02,688 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 23:31:02,689 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 23:31:02,689 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 23:31:02,690 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 23:31:02,690 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 23:31:02,691 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 23:31:02,691 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 23:31:02,691 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 23:31:02,692 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 23:31:02,692 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 23:31:02,693 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-31 23:31:02,709 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 23:31:02,709 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 23:31:02,710 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 23:31:02,710 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 23:31:02,710 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 23:31:02,711 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 23:31:02,711 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 23:31:02,711 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 23:31:02,711 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 23:31:02,712 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 23:31:02,712 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 23:31:02,712 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 23:31:02,712 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 23:31:02,712 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 23:31:02,713 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 23:31:02,713 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-31 23:31:02,713 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-31 23:31:02,713 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-31 23:31:02,713 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 23:31:02,713 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-31 23:31:02,714 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 23:31:02,714 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 23:31:02,714 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 23:31:02,714 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 23:31:02,714 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 23:31:02,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:31:02,715 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 23:31:02,715 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 23:31:02,715 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 23:31:02,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 23:31:02,715 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 23:31:02,715 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 23:31:02,716 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 23:31:02,716 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 23:31:02,716 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f4fff0b2b9fbf3a1c21190a7a3a2488ff184faa22678fe9af5f2740e4422fce Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 23:31:03,015 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 23:31:03,031 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 23:31:03,033 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 23:31:03,034 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 23:31:03,034 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 23:31:03,035 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.i [2023-08-31 23:31:04,218 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 23:31:04,432 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 23:31:04,433 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe005_tso.i [2023-08-31 23:31:04,445 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/764d90e62/5b58be84a3f64cdc8f25300586cb4b56/FLAGd2aef96e6 [2023-08-31 23:31:04,456 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/764d90e62/5b58be84a3f64cdc8f25300586cb4b56 [2023-08-31 23:31:04,458 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 23:31:04,459 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 23:31:04,461 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 23:31:04,462 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 23:31:04,466 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 23:31:04,467 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:31:04" (1/1) ... [2023-08-31 23:31:04,470 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20cf122e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:31:04, skipping insertion in model container [2023-08-31 23:31:04,470 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:31:04" (1/1) ... [2023-08-31 23:31:04,475 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 23:31:04,516 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 23:31:04,617 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe005_tso.i[945,958] [2023-08-31 23:31:04,746 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:31:04,752 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 23:31:04,759 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe005_tso.i[945,958] [2023-08-31 23:31:04,775 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:31:04,796 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 23:31:04,796 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 23:31:04,800 INFO L208 MainTranslator]: Completed translation [2023-08-31 23:31:04,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:31:04 WrapperNode [2023-08-31 23:31:04,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 23:31:04,801 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 23:31:04,801 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 23:31:04,802 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 23:31:04,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:31:04" (1/1) ... [2023-08-31 23:31:04,813 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:31:04" (1/1) ... [2023-08-31 23:31:04,825 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2023-08-31 23:31:04,825 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 23:31:04,826 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 23:31:04,826 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 23:31:04,826 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 23:31:04,831 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:31:04" (1/1) ... [2023-08-31 23:31:04,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:31:04" (1/1) ... [2023-08-31 23:31:04,832 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:31:04" (1/1) ... [2023-08-31 23:31:04,833 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:31:04" (1/1) ... [2023-08-31 23:31:04,836 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:31:04" (1/1) ... [2023-08-31 23:31:04,837 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:31:04" (1/1) ... [2023-08-31 23:31:04,838 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:31:04" (1/1) ... [2023-08-31 23:31:04,838 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:31:04" (1/1) ... [2023-08-31 23:31:04,840 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 23:31:04,840 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 23:31:04,840 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 23:31:04,840 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 23:31:04,841 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:31:04" (1/1) ... [2023-08-31 23:31:04,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:31:04,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 23:31:04,859 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-31 23:31:04,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-31 23:31:04,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 23:31:04,895 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-31 23:31:04,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 23:31:04,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 23:31:04,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 23:31:04,897 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-31 23:31:04,897 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-31 23:31:04,897 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-31 23:31:04,897 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-31 23:31:04,897 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-31 23:31:04,897 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-31 23:31:04,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 23:31:04,897 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-31 23:31:04,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 23:31:04,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 23:31:04,899 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 23:31:05,040 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 23:31:05,042 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 23:31:05,200 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 23:31:05,205 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 23:31:05,205 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-31 23:31:05,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:31:05 BoogieIcfgContainer [2023-08-31 23:31:05,206 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 23:31:05,208 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 23:31:05,208 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 23:31:05,210 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 23:31:05,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 11:31:04" (1/3) ... [2023-08-31 23:31:05,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@655b4143 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:31:05, skipping insertion in model container [2023-08-31 23:31:05,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:31:04" (2/3) ... [2023-08-31 23:31:05,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@655b4143 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:31:05, skipping insertion in model container [2023-08-31 23:31:05,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:31:05" (3/3) ... [2023-08-31 23:31:05,211 INFO L112 eAbstractionObserver]: Analyzing ICFG safe005_tso.i [2023-08-31 23:31:05,221 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 23:31:05,221 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-31 23:31:05,222 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 23:31:05,298 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:31:05,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 95 transitions, 205 flow [2023-08-31 23:31:05,381 INFO L130 PetriNetUnfolder]: 2/92 cut-off events. [2023-08-31 23:31:05,381 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:31:05,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 92 events. 2/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 69 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 71. Up to 2 conditions per place. [2023-08-31 23:31:05,385 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 95 transitions, 205 flow [2023-08-31 23:31:05,389 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 88 transitions, 185 flow [2023-08-31 23:31:05,392 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:31:05,408 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 88 transitions, 185 flow [2023-08-31 23:31:05,413 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 96 places, 88 transitions, 185 flow [2023-08-31 23:31:05,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 88 transitions, 185 flow [2023-08-31 23:31:05,452 INFO L130 PetriNetUnfolder]: 2/88 cut-off events. [2023-08-31 23:31:05,452 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:31:05,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 88 events. 2/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 66 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2023-08-31 23:31:05,454 INFO L119 LiptonReduction]: Number of co-enabled transitions 1512 [2023-08-31 23:31:07,604 INFO L134 LiptonReduction]: Checked pairs total: 3363 [2023-08-31 23:31:07,604 INFO L136 LiptonReduction]: Total number of compositions: 86 [2023-08-31 23:31:07,613 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 23:31:07,617 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;@6e748c3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:31:07,617 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-08-31 23:31:07,618 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-31 23:31:07,618 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:31:07,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:31:07,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-31 23:31:07,619 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:31:07,621 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:31:07,621 INFO L85 PathProgramCache]: Analyzing trace with hash 334, now seen corresponding path program 1 times [2023-08-31 23:31:07,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:31:07,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860539514] [2023-08-31 23:31:07,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:31:07,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:31:07,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:31:07,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:31:07,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:31:07,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860539514] [2023-08-31 23:31:07,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860539514] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:31:07,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:31:07,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-31 23:31:07,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104784384] [2023-08-31 23:31:07,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:31:07,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-31 23:31:07,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:31:07,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-31 23:31:07,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-31 23:31:07,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 181 [2023-08-31 23:31:07,719 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 61 flow. Second operand has 2 states, 2 states have (on average 89.5) internal successors, (179), 2 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:07,719 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:31:07,719 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 181 [2023-08-31 23:31:07,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:31:07,787 INFO L130 PetriNetUnfolder]: 272/454 cut-off events. [2023-08-31 23:31:07,787 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:31:07,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 917 conditions, 454 events. 272/454 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 1963 event pairs, 272 based on Foata normal form. 0/414 useless extension candidates. Maximal degree in co-relation 906. Up to 433 conditions per place. [2023-08-31 23:31:07,791 INFO L137 encePairwiseOnDemand]: 174/181 looper letters, 16 selfloop transitions, 0 changer transitions 0/19 dead transitions. [2023-08-31 23:31:07,791 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 19 transitions, 79 flow [2023-08-31 23:31:07,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-31 23:31:07,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-31 23:31:07,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 201 transitions. [2023-08-31 23:31:07,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5552486187845304 [2023-08-31 23:31:07,800 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 201 transitions. [2023-08-31 23:31:07,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 201 transitions. [2023-08-31 23:31:07,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:31:07,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 201 transitions. [2023-08-31 23:31:07,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 100.5) internal successors, (201), 2 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:07,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:07,807 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:07,808 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 61 flow. Second operand 2 states and 201 transitions. [2023-08-31 23:31:07,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 19 transitions, 79 flow [2023-08-31 23:31:07,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 19 transitions, 76 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-31 23:31:07,810 INFO L231 Difference]: Finished difference. Result has 27 places, 19 transitions, 44 flow [2023-08-31 23:31:07,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=44, PETRI_PLACES=27, PETRI_TRANSITIONS=19} [2023-08-31 23:31:07,813 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -8 predicate places. [2023-08-31 23:31:07,814 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 44 flow [2023-08-31 23:31:07,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 89.5) internal successors, (179), 2 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:07,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:31:07,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:31:07,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 23:31:07,815 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:31:07,815 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:31:07,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1998126697, now seen corresponding path program 1 times [2023-08-31 23:31:07,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:31:07,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144300863] [2023-08-31 23:31:07,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:31:07,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:31:07,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:31:08,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:31:08,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:31:08,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144300863] [2023-08-31 23:31:08,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144300863] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:31:08,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:31:08,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 23:31:08,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667232508] [2023-08-31 23:31:08,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:31:08,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 23:31:08,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:31:08,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 23:31:08,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-31 23:31:08,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 181 [2023-08-31 23:31:08,493 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 44 flow. Second operand has 6 states, 6 states have (on average 75.5) internal successors, (453), 6 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:08,493 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:31:08,493 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 181 [2023-08-31 23:31:08,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:31:08,596 INFO L130 PetriNetUnfolder]: 293/466 cut-off events. [2023-08-31 23:31:08,596 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:31:08,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 957 conditions, 466 events. 293/466 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1847 event pairs, 51 based on Foata normal form. 0/466 useless extension candidates. Maximal degree in co-relation 954. Up to 222 conditions per place. [2023-08-31 23:31:08,601 INFO L137 encePairwiseOnDemand]: 176/181 looper letters, 25 selfloop transitions, 4 changer transitions 0/31 dead transitions. [2023-08-31 23:31:08,601 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 31 transitions, 126 flow [2023-08-31 23:31:08,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 23:31:08,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 23:31:08,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 475 transitions. [2023-08-31 23:31:08,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43738489871086556 [2023-08-31 23:31:08,604 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 475 transitions. [2023-08-31 23:31:08,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 475 transitions. [2023-08-31 23:31:08,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:31:08,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 475 transitions. [2023-08-31 23:31:08,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 79.16666666666667) internal successors, (475), 6 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:08,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 181.0) internal successors, (1267), 7 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:08,608 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 181.0) internal successors, (1267), 7 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:08,609 INFO L175 Difference]: Start difference. First operand has 27 places, 19 transitions, 44 flow. Second operand 6 states and 475 transitions. [2023-08-31 23:31:08,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 31 transitions, 126 flow [2023-08-31 23:31:08,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 31 transitions, 126 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 23:31:08,609 INFO L231 Difference]: Finished difference. Result has 31 places, 18 transitions, 50 flow [2023-08-31 23:31:08,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=50, PETRI_PLACES=31, PETRI_TRANSITIONS=18} [2023-08-31 23:31:08,610 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -4 predicate places. [2023-08-31 23:31:08,610 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 18 transitions, 50 flow [2023-08-31 23:31:08,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.5) internal successors, (453), 6 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:08,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:31:08,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:31:08,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 23:31:08,611 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:31:08,612 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:31:08,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1998126667, now seen corresponding path program 1 times [2023-08-31 23:31:08,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:31:08,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210714846] [2023-08-31 23:31:08,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:31:08,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:31:08,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:31:08,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:31:08,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:31:08,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210714846] [2023-08-31 23:31:08,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210714846] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:31:08,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:31:08,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:31:08,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489148660] [2023-08-31 23:31:08,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:31:08,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:31:08,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:31:08,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:31:08,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:31:08,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 181 [2023-08-31 23:31:08,776 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 18 transitions, 50 flow. Second operand has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:08,776 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:31:08,776 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 181 [2023-08-31 23:31:08,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:31:08,912 INFO L130 PetriNetUnfolder]: 953/1504 cut-off events. [2023-08-31 23:31:08,912 INFO L131 PetriNetUnfolder]: For 115/115 co-relation queries the response was YES. [2023-08-31 23:31:08,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3225 conditions, 1504 events. 953/1504 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 7243 event pairs, 265 based on Foata normal form. 106/1610 useless extension candidates. Maximal degree in co-relation 3221. Up to 634 conditions per place. [2023-08-31 23:31:08,916 INFO L137 encePairwiseOnDemand]: 173/181 looper letters, 26 selfloop transitions, 6 changer transitions 18/50 dead transitions. [2023-08-31 23:31:08,917 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 50 transitions, 228 flow [2023-08-31 23:31:08,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:31:08,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:31:08,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 447 transitions. [2023-08-31 23:31:08,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49392265193370166 [2023-08-31 23:31:08,918 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 447 transitions. [2023-08-31 23:31:08,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 447 transitions. [2023-08-31 23:31:08,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:31:08,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 447 transitions. [2023-08-31 23:31:08,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 89.4) internal successors, (447), 5 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:08,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:08,922 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:08,922 INFO L175 Difference]: Start difference. First operand has 31 places, 18 transitions, 50 flow. Second operand 5 states and 447 transitions. [2023-08-31 23:31:08,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 50 transitions, 228 flow [2023-08-31 23:31:08,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 50 transitions, 214 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-31 23:31:08,925 INFO L231 Difference]: Finished difference. Result has 35 places, 22 transitions, 98 flow [2023-08-31 23:31:08,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=98, PETRI_PLACES=35, PETRI_TRANSITIONS=22} [2023-08-31 23:31:08,926 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2023-08-31 23:31:08,926 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 22 transitions, 98 flow [2023-08-31 23:31:08,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:08,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:31:08,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:31:08,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 23:31:08,927 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:31:08,927 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:31:08,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1812381922, now seen corresponding path program 1 times [2023-08-31 23:31:08,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:31:08,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939850584] [2023-08-31 23:31:08,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:31:08,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:31:08,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:31:09,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:31:09,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:31:09,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939850584] [2023-08-31 23:31:09,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939850584] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:31:09,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:31:09,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:31:09,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614866380] [2023-08-31 23:31:09,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:31:09,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:31:09,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:31:09,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:31:09,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:31:09,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 181 [2023-08-31 23:31:09,038 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 22 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 81.0) internal successors, (405), 5 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:09,039 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:31:09,039 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 181 [2023-08-31 23:31:09,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:31:09,168 INFO L130 PetriNetUnfolder]: 762/1237 cut-off events. [2023-08-31 23:31:09,169 INFO L131 PetriNetUnfolder]: For 995/995 co-relation queries the response was YES. [2023-08-31 23:31:09,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3745 conditions, 1237 events. 762/1237 cut-off events. For 995/995 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 5572 event pairs, 135 based on Foata normal form. 78/1315 useless extension candidates. Maximal degree in co-relation 3738. Up to 464 conditions per place. [2023-08-31 23:31:09,174 INFO L137 encePairwiseOnDemand]: 173/181 looper letters, 27 selfloop transitions, 7 changer transitions 25/59 dead transitions. [2023-08-31 23:31:09,175 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 59 transitions, 358 flow [2023-08-31 23:31:09,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 23:31:09,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 23:31:09,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 610 transitions. [2023-08-31 23:31:09,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48145224940805054 [2023-08-31 23:31:09,177 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 610 transitions. [2023-08-31 23:31:09,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 610 transitions. [2023-08-31 23:31:09,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:31:09,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 610 transitions. [2023-08-31 23:31:09,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.14285714285714) internal successors, (610), 7 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:09,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 181.0) internal successors, (1448), 8 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:09,180 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 181.0) internal successors, (1448), 8 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:09,181 INFO L175 Difference]: Start difference. First operand has 35 places, 22 transitions, 98 flow. Second operand 7 states and 610 transitions. [2023-08-31 23:31:09,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 59 transitions, 358 flow [2023-08-31 23:31:09,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 59 transitions, 328 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:31:09,185 INFO L231 Difference]: Finished difference. Result has 43 places, 24 transitions, 136 flow [2023-08-31 23:31:09,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=136, PETRI_PLACES=43, PETRI_TRANSITIONS=24} [2023-08-31 23:31:09,186 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 8 predicate places. [2023-08-31 23:31:09,186 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 24 transitions, 136 flow [2023-08-31 23:31:09,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 81.0) internal successors, (405), 5 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:09,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:31:09,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:31:09,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 23:31:09,187 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:31:09,187 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:31:09,187 INFO L85 PathProgramCache]: Analyzing trace with hash 349679197, now seen corresponding path program 1 times [2023-08-31 23:31:09,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:31:09,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875842648] [2023-08-31 23:31:09,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:31:09,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:31:09,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:31:09,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:31:09,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:31:09,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875842648] [2023-08-31 23:31:09,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875842648] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:31:09,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:31:09,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:31:09,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920151431] [2023-08-31 23:31:09,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:31:09,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:31:09,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:31:09,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:31:09,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:31:09,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 181 [2023-08-31 23:31:09,282 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 24 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:09,282 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:31:09,283 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 181 [2023-08-31 23:31:09,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:31:09,357 INFO L130 PetriNetUnfolder]: 474/822 cut-off events. [2023-08-31 23:31:09,357 INFO L131 PetriNetUnfolder]: For 1803/1821 co-relation queries the response was YES. [2023-08-31 23:31:09,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2592 conditions, 822 events. 474/822 cut-off events. For 1803/1821 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3954 event pairs, 210 based on Foata normal form. 59/849 useless extension candidates. Maximal degree in co-relation 2580. Up to 393 conditions per place. [2023-08-31 23:31:09,361 INFO L137 encePairwiseOnDemand]: 177/181 looper letters, 20 selfloop transitions, 3 changer transitions 11/39 dead transitions. [2023-08-31 23:31:09,362 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 39 transitions, 256 flow [2023-08-31 23:31:09,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:31:09,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:31:09,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 462 transitions. [2023-08-31 23:31:09,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104972375690607 [2023-08-31 23:31:09,363 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 462 transitions. [2023-08-31 23:31:09,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 462 transitions. [2023-08-31 23:31:09,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:31:09,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 462 transitions. [2023-08-31 23:31:09,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 92.4) internal successors, (462), 5 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:09,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:09,366 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:09,366 INFO L175 Difference]: Start difference. First operand has 43 places, 24 transitions, 136 flow. Second operand 5 states and 462 transitions. [2023-08-31 23:31:09,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 39 transitions, 256 flow [2023-08-31 23:31:09,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 39 transitions, 247 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-31 23:31:09,370 INFO L231 Difference]: Finished difference. Result has 44 places, 24 transitions, 142 flow [2023-08-31 23:31:09,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=142, PETRI_PLACES=44, PETRI_TRANSITIONS=24} [2023-08-31 23:31:09,370 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 9 predicate places. [2023-08-31 23:31:09,370 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 24 transitions, 142 flow [2023-08-31 23:31:09,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:09,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:31:09,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:31:09,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 23:31:09,371 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:31:09,371 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:31:09,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1085617505, now seen corresponding path program 1 times [2023-08-31 23:31:09,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:31:09,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125107215] [2023-08-31 23:31:09,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:31:09,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:31:09,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:31:09,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:31:09,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:31:09,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125107215] [2023-08-31 23:31:09,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125107215] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:31:09,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:31:09,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 23:31:09,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801126135] [2023-08-31 23:31:09,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:31:09,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 23:31:09,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:31:09,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 23:31:09,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-31 23:31:09,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 181 [2023-08-31 23:31:09,496 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 24 transitions, 142 flow. Second operand has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:09,496 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:31:09,496 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 181 [2023-08-31 23:31:09,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:31:09,610 INFO L130 PetriNetUnfolder]: 653/1082 cut-off events. [2023-08-31 23:31:09,610 INFO L131 PetriNetUnfolder]: For 1451/1451 co-relation queries the response was YES. [2023-08-31 23:31:09,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3519 conditions, 1082 events. 653/1082 cut-off events. For 1451/1451 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4998 event pairs, 103 based on Foata normal form. 36/1118 useless extension candidates. Maximal degree in co-relation 3505. Up to 530 conditions per place. [2023-08-31 23:31:09,614 INFO L137 encePairwiseOnDemand]: 174/181 looper letters, 37 selfloop transitions, 9 changer transitions 14/60 dead transitions. [2023-08-31 23:31:09,614 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 60 transitions, 423 flow [2023-08-31 23:31:09,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 23:31:09,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 23:31:09,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 527 transitions. [2023-08-31 23:31:09,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4852670349907919 [2023-08-31 23:31:09,616 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 527 transitions. [2023-08-31 23:31:09,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 527 transitions. [2023-08-31 23:31:09,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:31:09,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 527 transitions. [2023-08-31 23:31:09,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 87.83333333333333) internal successors, (527), 6 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:09,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 181.0) internal successors, (1267), 7 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:09,619 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 181.0) internal successors, (1267), 7 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:09,619 INFO L175 Difference]: Start difference. First operand has 44 places, 24 transitions, 142 flow. Second operand 6 states and 527 transitions. [2023-08-31 23:31:09,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 60 transitions, 423 flow [2023-08-31 23:31:09,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 60 transitions, 393 flow, removed 9 selfloop flow, removed 6 redundant places. [2023-08-31 23:31:09,624 INFO L231 Difference]: Finished difference. Result has 45 places, 29 transitions, 202 flow [2023-08-31 23:31:09,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=202, PETRI_PLACES=45, PETRI_TRANSITIONS=29} [2023-08-31 23:31:09,624 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 10 predicate places. [2023-08-31 23:31:09,625 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 29 transitions, 202 flow [2023-08-31 23:31:09,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:09,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:31:09,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:31:09,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 23:31:09,625 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:31:09,626 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:31:09,626 INFO L85 PathProgramCache]: Analyzing trace with hash 645393517, now seen corresponding path program 1 times [2023-08-31 23:31:09,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:31:09,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778563685] [2023-08-31 23:31:09,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:31:09,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:31:09,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:31:09,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:31:09,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:31:09,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778563685] [2023-08-31 23:31:09,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778563685] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:31:09,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:31:09,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 23:31:09,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665597008] [2023-08-31 23:31:09,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:31:09,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 23:31:09,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:31:09,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 23:31:09,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-31 23:31:09,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 181 [2023-08-31 23:31:09,731 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 29 transitions, 202 flow. Second operand has 6 states, 6 states have (on average 81.16666666666667) internal successors, (487), 6 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:09,731 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:31:09,731 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 181 [2023-08-31 23:31:09,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:31:09,914 INFO L130 PetriNetUnfolder]: 759/1296 cut-off events. [2023-08-31 23:31:09,915 INFO L131 PetriNetUnfolder]: For 1895/1895 co-relation queries the response was YES. [2023-08-31 23:31:09,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4189 conditions, 1296 events. 759/1296 cut-off events. For 1895/1895 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 6485 event pairs, 137 based on Foata normal form. 32/1328 useless extension candidates. Maximal degree in co-relation 4176. Up to 380 conditions per place. [2023-08-31 23:31:09,920 INFO L137 encePairwiseOnDemand]: 173/181 looper letters, 36 selfloop transitions, 12 changer transitions 28/76 dead transitions. [2023-08-31 23:31:09,920 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 76 transitions, 547 flow [2023-08-31 23:31:09,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 23:31:09,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 23:31:09,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 782 transitions. [2023-08-31 23:31:09,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.480049109883364 [2023-08-31 23:31:09,922 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 782 transitions. [2023-08-31 23:31:09,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 782 transitions. [2023-08-31 23:31:09,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:31:09,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 782 transitions. [2023-08-31 23:31:09,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 86.88888888888889) internal successors, (782), 9 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:09,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 181.0) internal successors, (1810), 10 states have internal predecessors, (1810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:09,926 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 181.0) internal successors, (1810), 10 states have internal predecessors, (1810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:09,926 INFO L175 Difference]: Start difference. First operand has 45 places, 29 transitions, 202 flow. Second operand 9 states and 782 transitions. [2023-08-31 23:31:09,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 76 transitions, 547 flow [2023-08-31 23:31:09,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 76 transitions, 512 flow, removed 14 selfloop flow, removed 3 redundant places. [2023-08-31 23:31:09,932 INFO L231 Difference]: Finished difference. Result has 53 places, 28 transitions, 214 flow [2023-08-31 23:31:09,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=214, PETRI_PLACES=53, PETRI_TRANSITIONS=28} [2023-08-31 23:31:09,932 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 18 predicate places. [2023-08-31 23:31:09,933 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 28 transitions, 214 flow [2023-08-31 23:31:09,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 81.16666666666667) internal successors, (487), 6 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:09,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:31:09,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:31:09,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 23:31:09,933 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:31:09,934 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:31:09,934 INFO L85 PathProgramCache]: Analyzing trace with hash -679719555, now seen corresponding path program 2 times [2023-08-31 23:31:09,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:31:09,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787764170] [2023-08-31 23:31:09,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:31:09,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:31:09,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:31:10,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:31:10,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:31:10,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787764170] [2023-08-31 23:31:10,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787764170] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:31:10,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:31:10,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 23:31:10,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042331997] [2023-08-31 23:31:10,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:31:10,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 23:31:10,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:31:10,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 23:31:10,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-31 23:31:10,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 181 [2023-08-31 23:31:10,038 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 28 transitions, 214 flow. Second operand has 6 states, 6 states have (on average 81.16666666666667) internal successors, (487), 6 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:10,038 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:31:10,038 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 181 [2023-08-31 23:31:10,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:31:10,162 INFO L130 PetriNetUnfolder]: 511/892 cut-off events. [2023-08-31 23:31:10,163 INFO L131 PetriNetUnfolder]: For 1780/1780 co-relation queries the response was YES. [2023-08-31 23:31:10,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2908 conditions, 892 events. 511/892 cut-off events. For 1780/1780 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4121 event pairs, 129 based on Foata normal form. 32/924 useless extension candidates. Maximal degree in co-relation 2893. Up to 238 conditions per place. [2023-08-31 23:31:10,167 INFO L137 encePairwiseOnDemand]: 174/181 looper letters, 30 selfloop transitions, 7 changer transitions 26/63 dead transitions. [2023-08-31 23:31:10,167 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 63 transitions, 466 flow [2023-08-31 23:31:10,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 23:31:10,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 23:31:10,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 692 transitions. [2023-08-31 23:31:10,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47790055248618785 [2023-08-31 23:31:10,169 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 692 transitions. [2023-08-31 23:31:10,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 692 transitions. [2023-08-31 23:31:10,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:31:10,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 692 transitions. [2023-08-31 23:31:10,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 86.5) internal successors, (692), 8 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:10,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 181.0) internal successors, (1629), 9 states have internal predecessors, (1629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:10,172 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 181.0) internal successors, (1629), 9 states have internal predecessors, (1629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:10,172 INFO L175 Difference]: Start difference. First operand has 53 places, 28 transitions, 214 flow. Second operand 8 states and 692 transitions. [2023-08-31 23:31:10,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 63 transitions, 466 flow [2023-08-31 23:31:10,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 63 transitions, 431 flow, removed 14 selfloop flow, removed 6 redundant places. [2023-08-31 23:31:10,177 INFO L231 Difference]: Finished difference. Result has 54 places, 23 transitions, 162 flow [2023-08-31 23:31:10,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=162, PETRI_PLACES=54, PETRI_TRANSITIONS=23} [2023-08-31 23:31:10,178 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 19 predicate places. [2023-08-31 23:31:10,178 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 23 transitions, 162 flow [2023-08-31 23:31:10,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 81.16666666666667) internal successors, (487), 6 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:10,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:31:10,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:31:10,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 23:31:10,179 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:31:10,179 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:31:10,179 INFO L85 PathProgramCache]: Analyzing trace with hash 8558759, now seen corresponding path program 1 times [2023-08-31 23:31:10,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:31:10,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48834536] [2023-08-31 23:31:10,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:31:10,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:31:10,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:31:10,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:31:10,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:31:10,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48834536] [2023-08-31 23:31:10,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48834536] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:31:10,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:31:10,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:31:10,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059188735] [2023-08-31 23:31:10,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:31:10,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:31:10,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:31:10,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:31:10,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:31:10,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 181 [2023-08-31 23:31:10,261 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 23 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:10,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:31:10,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 181 [2023-08-31 23:31:10,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:31:10,309 INFO L130 PetriNetUnfolder]: 148/300 cut-off events. [2023-08-31 23:31:10,310 INFO L131 PetriNetUnfolder]: For 612/617 co-relation queries the response was YES. [2023-08-31 23:31:10,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 936 conditions, 300 events. 148/300 cut-off events. For 612/617 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1189 event pairs, 66 based on Foata normal form. 12/300 useless extension candidates. Maximal degree in co-relation 922. Up to 239 conditions per place. [2023-08-31 23:31:10,311 INFO L137 encePairwiseOnDemand]: 176/181 looper letters, 20 selfloop transitions, 4 changer transitions 3/33 dead transitions. [2023-08-31 23:31:10,311 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 33 transitions, 257 flow [2023-08-31 23:31:10,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:31:10,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:31:10,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 281 transitions. [2023-08-31 23:31:10,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5174953959484346 [2023-08-31 23:31:10,313 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 281 transitions. [2023-08-31 23:31:10,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 281 transitions. [2023-08-31 23:31:10,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:31:10,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 281 transitions. [2023-08-31 23:31:10,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:10,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:10,315 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:10,315 INFO L175 Difference]: Start difference. First operand has 54 places, 23 transitions, 162 flow. Second operand 3 states and 281 transitions. [2023-08-31 23:31:10,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 33 transitions, 257 flow [2023-08-31 23:31:10,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 33 transitions, 215 flow, removed 5 selfloop flow, removed 10 redundant places. [2023-08-31 23:31:10,317 INFO L231 Difference]: Finished difference. Result has 42 places, 26 transitions, 151 flow [2023-08-31 23:31:10,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=42, PETRI_TRANSITIONS=26} [2023-08-31 23:31:10,318 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 7 predicate places. [2023-08-31 23:31:10,318 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 26 transitions, 151 flow [2023-08-31 23:31:10,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:10,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:31:10,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:31:10,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 23:31:10,319 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:31:10,319 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:31:10,319 INFO L85 PathProgramCache]: Analyzing trace with hash 996406547, now seen corresponding path program 1 times [2023-08-31 23:31:10,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:31:10,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521475490] [2023-08-31 23:31:10,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:31:10,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:31:10,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:31:10,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:31:10,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:31:10,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521475490] [2023-08-31 23:31:10,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521475490] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:31:10,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:31:10,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 23:31:10,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408010010] [2023-08-31 23:31:10,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:31:10,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 23:31:10,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:31:10,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 23:31:10,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-31 23:31:10,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 181 [2023-08-31 23:31:10,448 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 26 transitions, 151 flow. Second operand has 6 states, 6 states have (on average 81.5) internal successors, (489), 6 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:10,448 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:31:10,449 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 181 [2023-08-31 23:31:10,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:31:10,522 INFO L130 PetriNetUnfolder]: 305/588 cut-off events. [2023-08-31 23:31:10,523 INFO L131 PetriNetUnfolder]: For 608/608 co-relation queries the response was YES. [2023-08-31 23:31:10,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2104 conditions, 588 events. 305/588 cut-off events. For 608/608 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2691 event pairs, 78 based on Foata normal form. 17/605 useless extension candidates. Maximal degree in co-relation 2094. Up to 348 conditions per place. [2023-08-31 23:31:10,525 INFO L137 encePairwiseOnDemand]: 174/181 looper letters, 30 selfloop transitions, 6 changer transitions 19/55 dead transitions. [2023-08-31 23:31:10,525 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 55 transitions, 400 flow [2023-08-31 23:31:10,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 23:31:10,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 23:31:10,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 518 transitions. [2023-08-31 23:31:10,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47697974217311234 [2023-08-31 23:31:10,527 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 518 transitions. [2023-08-31 23:31:10,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 518 transitions. [2023-08-31 23:31:10,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:31:10,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 518 transitions. [2023-08-31 23:31:10,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 86.33333333333333) internal successors, (518), 6 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:10,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 181.0) internal successors, (1267), 7 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:10,530 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 181.0) internal successors, (1267), 7 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:10,531 INFO L175 Difference]: Start difference. First operand has 42 places, 26 transitions, 151 flow. Second operand 6 states and 518 transitions. [2023-08-31 23:31:10,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 55 transitions, 400 flow [2023-08-31 23:31:10,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 55 transitions, 390 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 23:31:10,533 INFO L231 Difference]: Finished difference. Result has 48 places, 24 transitions, 146 flow [2023-08-31 23:31:10,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=146, PETRI_PLACES=48, PETRI_TRANSITIONS=24} [2023-08-31 23:31:10,533 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 13 predicate places. [2023-08-31 23:31:10,533 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 24 transitions, 146 flow [2023-08-31 23:31:10,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 81.5) internal successors, (489), 6 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:10,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:31:10,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:31:10,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-31 23:31:10,534 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:31:10,535 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:31:10,535 INFO L85 PathProgramCache]: Analyzing trace with hash -237592137, now seen corresponding path program 2 times [2023-08-31 23:31:10,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:31:10,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676179935] [2023-08-31 23:31:10,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:31:10,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:31:10,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:31:10,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:31:10,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:31:10,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676179935] [2023-08-31 23:31:10,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676179935] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:31:10,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:31:10,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:31:10,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235685065] [2023-08-31 23:31:10,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:31:10,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:31:10,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:31:10,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:31:10,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:31:10,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 181 [2023-08-31 23:31:10,629 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 24 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:10,629 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:31:10,629 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 181 [2023-08-31 23:31:10,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:31:10,665 INFO L130 PetriNetUnfolder]: 80/186 cut-off events. [2023-08-31 23:31:10,665 INFO L131 PetriNetUnfolder]: For 336/357 co-relation queries the response was YES. [2023-08-31 23:31:10,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 681 conditions, 186 events. 80/186 cut-off events. For 336/357 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 690 event pairs, 20 based on Foata normal form. 26/202 useless extension candidates. Maximal degree in co-relation 669. Up to 99 conditions per place. [2023-08-31 23:31:10,666 INFO L137 encePairwiseOnDemand]: 176/181 looper letters, 20 selfloop transitions, 7 changer transitions 6/38 dead transitions. [2023-08-31 23:31:10,666 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 38 transitions, 286 flow [2023-08-31 23:31:10,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 23:31:10,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 23:31:10,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 373 transitions. [2023-08-31 23:31:10,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5151933701657458 [2023-08-31 23:31:10,668 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 373 transitions. [2023-08-31 23:31:10,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 373 transitions. [2023-08-31 23:31:10,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:31:10,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 373 transitions. [2023-08-31 23:31:10,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:10,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:10,670 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:10,670 INFO L175 Difference]: Start difference. First operand has 48 places, 24 transitions, 146 flow. Second operand 4 states and 373 transitions. [2023-08-31 23:31:10,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 38 transitions, 286 flow [2023-08-31 23:31:10,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 38 transitions, 227 flow, removed 6 selfloop flow, removed 10 redundant places. [2023-08-31 23:31:10,671 INFO L231 Difference]: Finished difference. Result has 41 places, 27 transitions, 147 flow [2023-08-31 23:31:10,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=147, PETRI_PLACES=41, PETRI_TRANSITIONS=27} [2023-08-31 23:31:10,672 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 6 predicate places. [2023-08-31 23:31:10,672 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 27 transitions, 147 flow [2023-08-31 23:31:10,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:10,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:31:10,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:31:10,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 23:31:10,673 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:31:10,673 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:31:10,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1465260286, now seen corresponding path program 1 times [2023-08-31 23:31:10,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:31:10,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156954230] [2023-08-31 23:31:10,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:31:10,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:31:10,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:31:10,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:31:10,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:31:10,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156954230] [2023-08-31 23:31:10,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156954230] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:31:10,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:31:10,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 23:31:10,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957666698] [2023-08-31 23:31:10,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:31:10,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:31:10,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:31:10,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:31:10,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:31:10,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 181 [2023-08-31 23:31:10,766 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 27 transitions, 147 flow. Second operand has 5 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:10,766 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:31:10,766 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 181 [2023-08-31 23:31:10,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:31:10,801 INFO L130 PetriNetUnfolder]: 55/136 cut-off events. [2023-08-31 23:31:10,801 INFO L131 PetriNetUnfolder]: For 252/290 co-relation queries the response was YES. [2023-08-31 23:31:10,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 525 conditions, 136 events. 55/136 cut-off events. For 252/290 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 463 event pairs, 11 based on Foata normal form. 31/158 useless extension candidates. Maximal degree in co-relation 516. Up to 67 conditions per place. [2023-08-31 23:31:10,802 INFO L137 encePairwiseOnDemand]: 176/181 looper letters, 17 selfloop transitions, 10 changer transitions 6/38 dead transitions. [2023-08-31 23:31:10,802 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 38 transitions, 255 flow [2023-08-31 23:31:10,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:31:10,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:31:10,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 458 transitions. [2023-08-31 23:31:10,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5060773480662983 [2023-08-31 23:31:10,803 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 458 transitions. [2023-08-31 23:31:10,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 458 transitions. [2023-08-31 23:31:10,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:31:10,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 458 transitions. [2023-08-31 23:31:10,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.6) internal successors, (458), 5 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:10,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:10,806 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:10,806 INFO L175 Difference]: Start difference. First operand has 41 places, 27 transitions, 147 flow. Second operand 5 states and 458 transitions. [2023-08-31 23:31:10,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 38 transitions, 255 flow [2023-08-31 23:31:10,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 38 transitions, 233 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-08-31 23:31:10,808 INFO L231 Difference]: Finished difference. Result has 42 places, 27 transitions, 153 flow [2023-08-31 23:31:10,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=153, PETRI_PLACES=42, PETRI_TRANSITIONS=27} [2023-08-31 23:31:10,808 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 7 predicate places. [2023-08-31 23:31:10,808 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 27 transitions, 153 flow [2023-08-31 23:31:10,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:10,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:31:10,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:31:10,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-31 23:31:10,809 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:31:10,809 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:31:10,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1937429196, now seen corresponding path program 1 times [2023-08-31 23:31:10,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:31:10,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414569476] [2023-08-31 23:31:10,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:31:10,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:31:10,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:31:10,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:31:10,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:31:10,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414569476] [2023-08-31 23:31:10,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414569476] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:31:10,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:31:10,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 23:31:10,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607592711] [2023-08-31 23:31:10,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:31:10,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:31:10,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:31:10,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:31:10,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:31:10,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 181 [2023-08-31 23:31:10,920 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 27 transitions, 153 flow. Second operand has 5 states, 5 states have (on average 80.6) internal successors, (403), 5 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:10,920 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:31:10,920 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 181 [2023-08-31 23:31:10,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:31:10,978 INFO L130 PetriNetUnfolder]: 96/208 cut-off events. [2023-08-31 23:31:10,978 INFO L131 PetriNetUnfolder]: For 379/379 co-relation queries the response was YES. [2023-08-31 23:31:10,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 801 conditions, 208 events. 96/208 cut-off events. For 379/379 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 717 event pairs, 14 based on Foata normal form. 2/210 useless extension candidates. Maximal degree in co-relation 793. Up to 144 conditions per place. [2023-08-31 23:31:10,979 INFO L137 encePairwiseOnDemand]: 174/181 looper letters, 0 selfloop transitions, 0 changer transitions 44/44 dead transitions. [2023-08-31 23:31:10,979 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 44 transitions, 327 flow [2023-08-31 23:31:10,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 23:31:10,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 23:31:10,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 497 transitions. [2023-08-31 23:31:10,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4576427255985267 [2023-08-31 23:31:10,981 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 497 transitions. [2023-08-31 23:31:10,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 497 transitions. [2023-08-31 23:31:10,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:31:10,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 497 transitions. [2023-08-31 23:31:10,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 82.83333333333333) internal successors, (497), 6 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:10,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 181.0) internal successors, (1267), 7 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:10,983 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 181.0) internal successors, (1267), 7 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:10,983 INFO L175 Difference]: Start difference. First operand has 42 places, 27 transitions, 153 flow. Second operand 6 states and 497 transitions. [2023-08-31 23:31:10,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 44 transitions, 327 flow [2023-08-31 23:31:10,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 44 transitions, 291 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-08-31 23:31:10,985 INFO L231 Difference]: Finished difference. Result has 43 places, 0 transitions, 0 flow [2023-08-31 23:31:10,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=43, PETRI_TRANSITIONS=0} [2023-08-31 23:31:10,985 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 8 predicate places. [2023-08-31 23:31:10,986 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 0 transitions, 0 flow [2023-08-31 23:31:10,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.6) internal successors, (403), 5 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:31:10,988 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 11 remaining) [2023-08-31 23:31:10,988 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 11 remaining) [2023-08-31 23:31:10,988 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2023-08-31 23:31:10,988 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 11 remaining) [2023-08-31 23:31:10,988 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 11 remaining) [2023-08-31 23:31:10,989 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2023-08-31 23:31:10,989 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (4 of 11 remaining) [2023-08-31 23:31:10,989 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (3 of 11 remaining) [2023-08-31 23:31:10,989 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 11 remaining) [2023-08-31 23:31:10,989 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 11 remaining) [2023-08-31 23:31:10,989 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 11 remaining) [2023-08-31 23:31:10,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-31 23:31:10,989 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:31:10,992 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-31 23:31:10,992 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-31 23:31:10,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.08 11:31:10 BasicIcfg [2023-08-31 23:31:10,994 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-31 23:31:10,994 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-31 23:31:10,994 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-31 23:31:10,994 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-31 23:31:10,995 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:31:05" (3/4) ... [2023-08-31 23:31:10,997 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-31 23:31:11,001 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-08-31 23:31:11,001 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-08-31 23:31:11,001 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-08-31 23:31:11,004 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2023-08-31 23:31:11,004 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-31 23:31:11,004 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-31 23:31:11,005 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-31 23:31:11,025 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-31 23:31:11,025 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-31 23:31:11,026 INFO L158 Benchmark]: Toolchain (without parser) took 6566.55ms. Allocated memory was 65.0MB in the beginning and 199.2MB in the end (delta: 134.2MB). Free memory was 41.0MB in the beginning and 134.7MB in the end (delta: -93.7MB). Peak memory consumption was 42.1MB. Max. memory is 16.1GB. [2023-08-31 23:31:11,026 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 52.4MB. Free memory is still 29.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 23:31:11,026 INFO L158 Benchmark]: CACSL2BoogieTranslator took 339.82ms. Allocated memory is still 65.0MB. Free memory was 40.9MB in the beginning and 35.9MB in the end (delta: 5.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-08-31 23:31:11,026 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.20ms. Allocated memory is still 65.0MB. Free memory was 35.6MB in the beginning and 33.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 23:31:11,027 INFO L158 Benchmark]: Boogie Preprocessor took 14.08ms. Allocated memory is still 65.0MB. Free memory was 33.6MB in the beginning and 32.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 23:31:11,027 INFO L158 Benchmark]: RCFGBuilder took 366.27ms. Allocated memory is still 65.0MB. Free memory was 32.3MB in the beginning and 33.4MB in the end (delta: -1.1MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. [2023-08-31 23:31:11,027 INFO L158 Benchmark]: TraceAbstraction took 5786.31ms. Allocated memory was 65.0MB in the beginning and 199.2MB in the end (delta: 134.2MB). Free memory was 32.6MB in the beginning and 137.9MB in the end (delta: -105.3MB). Peak memory consumption was 28.7MB. Max. memory is 16.1GB. [2023-08-31 23:31:11,027 INFO L158 Benchmark]: Witness Printer took 31.00ms. Allocated memory is still 199.2MB. Free memory was 137.9MB in the beginning and 135.7MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 23:31:11,028 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 52.4MB. Free memory is still 29.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 339.82ms. Allocated memory is still 65.0MB. Free memory was 40.9MB in the beginning and 35.9MB in the end (delta: 5.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.20ms. Allocated memory is still 65.0MB. Free memory was 35.6MB in the beginning and 33.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 14.08ms. Allocated memory is still 65.0MB. Free memory was 33.6MB in the beginning and 32.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 366.27ms. Allocated memory is still 65.0MB. Free memory was 32.3MB in the beginning and 33.4MB in the end (delta: -1.1MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. * TraceAbstraction took 5786.31ms. Allocated memory was 65.0MB in the beginning and 199.2MB in the end (delta: 134.2MB). Free memory was 32.6MB in the beginning and 137.9MB in the end (delta: -105.3MB). Peak memory consumption was 28.7MB. Max. memory is 16.1GB. * Witness Printer took 31.00ms. Allocated memory is still 199.2MB. Free memory was 137.9MB in the beginning and 135.7MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.2s, 96 PlacesBefore, 35 PlacesAfterwards, 88 TransitionsBefore, 26 TransitionsAfterwards, 1512 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 52 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 86 TotalNumberOfCompositions, 3363 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2056, independent: 1958, independent conditional: 0, independent unconditional: 1958, dependent: 98, dependent conditional: 0, dependent unconditional: 98, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 838, independent: 819, independent conditional: 0, independent unconditional: 819, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2056, independent: 1139, independent conditional: 0, independent unconditional: 1139, dependent: 79, dependent conditional: 0, dependent unconditional: 79, unknown: 838, unknown conditional: 0, unknown unconditional: 838] , Statistics on independence cache: Total cache size (in pairs): 79, Positive cache size: 71, Positive conditional cache size: 0, Positive unconditional cache size: 71, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, 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: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 778]: 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, 118 locations, 11 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: 5.7s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 588 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 463 mSDsluCounter, 213 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 147 mSDsCounter, 90 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1176 IncrementalHoareTripleChecker+Invalid, 1266 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 90 mSolverCounterUnsat, 66 mSDtfsCounter, 1176 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=214occurred in iteration=7, InterpolantAutomatonStates: 72, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 156 NumberOfCodeBlocks, 156 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 143 ConstructedInterpolants, 0 QuantifiedInterpolants, 793 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-31 23:31:11,056 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