./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi000_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/rfi000_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 5128c539cd3051e20c09e1924eb0951d5be697be251e10d3c281464ed4c436cd --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 23:25:28,980 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 23:25:28,982 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 23:25:29,015 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 23:25:29,017 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 23:25:29,020 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 23:25:29,022 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 23:25:29,024 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 23:25:29,026 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 23:25:29,030 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 23:25:29,031 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 23:25:29,032 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 23:25:29,032 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 23:25:29,034 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 23:25:29,035 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 23:25:29,036 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 23:25:29,037 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 23:25:29,037 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 23:25:29,038 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 23:25:29,040 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 23:25:29,041 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 23:25:29,048 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 23:25:29,049 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 23:25:29,050 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 23:25:29,053 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 23:25:29,059 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 23:25:29,059 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 23:25:29,060 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 23:25:29,061 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 23:25:29,062 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 23:25:29,062 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 23:25:29,065 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 23:25:29,066 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 23:25:29,067 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 23:25:29,068 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 23:25:29,069 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 23:25:29,069 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 23:25:29,069 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 23:25:29,070 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 23:25:29,070 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 23:25:29,071 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 23:25:29,072 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-31 23:25:29,106 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 23:25:29,106 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 23:25:29,107 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 23:25:29,108 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 23:25:29,108 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 23:25:29,109 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 23:25:29,109 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 23:25:29,109 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 23:25:29,110 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 23:25:29,110 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 23:25:29,110 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 23:25:29,111 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 23:25:29,111 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 23:25:29,111 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 23:25:29,111 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 23:25:29,111 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-31 23:25:29,112 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-31 23:25:29,112 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-31 23:25:29,112 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 23:25:29,112 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-31 23:25:29,112 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 23:25:29,113 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 23:25:29,113 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 23:25:29,113 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 23:25:29,113 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 23:25:29,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:25:29,114 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 23:25:29,114 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 23:25:29,114 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 23:25:29,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 23:25:29,114 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 23:25:29,115 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 23:25:29,115 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 23:25:29,115 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 23:25:29,115 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5128c539cd3051e20c09e1924eb0951d5be697be251e10d3c281464ed4c436cd Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 23:25:29,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 23:25:29,412 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 23:25:29,414 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 23:25:29,415 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 23:25:29,415 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 23:25:29,416 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi000_tso.i [2023-08-31 23:25:30,637 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 23:25:30,930 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 23:25:30,931 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi000_tso.i [2023-08-31 23:25:30,943 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f21582289/0182f32632cf43b1b9228a3068c9b976/FLAGcbde54eef [2023-08-31 23:25:30,957 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f21582289/0182f32632cf43b1b9228a3068c9b976 [2023-08-31 23:25:30,960 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 23:25:30,961 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 23:25:30,967 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 23:25:30,967 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 23:25:30,971 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 23:25:30,971 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:25:30" (1/1) ... [2023-08-31 23:25:30,972 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39286d39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:25:30, skipping insertion in model container [2023-08-31 23:25:30,972 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:25:30" (1/1) ... [2023-08-31 23:25:30,978 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 23:25:31,030 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 23:25:31,152 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/rfi000_tso.i[944,957] [2023-08-31 23:25:31,363 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:25:31,378 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 23:25:31,430 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/rfi000_tso.i[944,957] [2023-08-31 23:25:31,487 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:25:31,536 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 23:25:31,536 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 23:25:31,542 INFO L208 MainTranslator]: Completed translation [2023-08-31 23:25:31,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:25:31 WrapperNode [2023-08-31 23:25:31,542 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 23:25:31,543 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 23:25:31,544 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 23:25:31,544 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 23:25:31,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:25:31" (1/1) ... [2023-08-31 23:25:31,579 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:25:31" (1/1) ... [2023-08-31 23:25:31,615 INFO L138 Inliner]: procedures = 175, calls = 45, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 170 [2023-08-31 23:25:31,615 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 23:25:31,617 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 23:25:31,617 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 23:25:31,618 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 23:25:31,625 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:25:31" (1/1) ... [2023-08-31 23:25:31,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:25:31" (1/1) ... [2023-08-31 23:25:31,642 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:25:31" (1/1) ... [2023-08-31 23:25:31,644 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:25:31" (1/1) ... [2023-08-31 23:25:31,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:25:31" (1/1) ... [2023-08-31 23:25:31,666 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:25:31" (1/1) ... [2023-08-31 23:25:31,668 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:25:31" (1/1) ... [2023-08-31 23:25:31,669 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:25:31" (1/1) ... [2023-08-31 23:25:31,672 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 23:25:31,685 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 23:25:31,686 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 23:25:31,686 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 23:25:31,687 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:25:31" (1/1) ... [2023-08-31 23:25:31,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:25:31,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 23:25:31,714 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-31 23:25:31,727 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 23:25:31,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 23:25:31,749 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-31 23:25:31,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 23:25:31,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 23:25:31,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 23:25:31,750 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-31 23:25:31,750 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-31 23:25:31,750 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-31 23:25:31,750 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-31 23:25:31,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 23:25:31,750 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-31 23:25:31,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 23:25:31,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 23:25:31,752 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 23:25:31,858 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 23:25:31,860 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 23:25:32,290 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 23:25:32,491 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 23:25:32,491 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-31 23:25:32,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:25:32 BoogieIcfgContainer [2023-08-31 23:25:32,494 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 23:25:32,496 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 23:25:32,496 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 23:25:32,498 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 23:25:32,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 11:25:30" (1/3) ... [2023-08-31 23:25:32,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@184a1670 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:25:32, skipping insertion in model container [2023-08-31 23:25:32,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:25:31" (2/3) ... [2023-08-31 23:25:32,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@184a1670 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:25:32, skipping insertion in model container [2023-08-31 23:25:32,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:25:32" (3/3) ... [2023-08-31 23:25:32,501 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi000_tso.i [2023-08-31 23:25:32,515 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 23:25:32,516 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-08-31 23:25:32,516 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 23:25:32,565 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:25:32,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 98 transitions, 206 flow [2023-08-31 23:25:32,639 INFO L130 PetriNetUnfolder]: 2/96 cut-off events. [2023-08-31 23:25:32,640 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:25:32,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 96 events. 2/96 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 62 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2023-08-31 23:25:32,645 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 98 transitions, 206 flow [2023-08-31 23:25:32,649 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 96 transitions, 198 flow [2023-08-31 23:25:32,657 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:25:32,669 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 101 places, 96 transitions, 198 flow [2023-08-31 23:25:32,671 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 101 places, 96 transitions, 198 flow [2023-08-31 23:25:32,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 96 transitions, 198 flow [2023-08-31 23:25:32,694 INFO L130 PetriNetUnfolder]: 2/96 cut-off events. [2023-08-31 23:25:32,694 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:25:32,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 96 events. 2/96 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 62 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2023-08-31 23:25:32,696 INFO L119 LiptonReduction]: Number of co-enabled transitions 1286 [2023-08-31 23:25:36,236 INFO L134 LiptonReduction]: Checked pairs total: 4279 [2023-08-31 23:25:36,236 INFO L136 LiptonReduction]: Total number of compositions: 88 [2023-08-31 23:25:36,248 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 23:25:36,253 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;@6f01b42a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:25:36,253 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-08-31 23:25:36,254 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-31 23:25:36,254 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:25:36,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:25:36,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-31 23:25:36,256 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-31 23:25:36,259 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:25:36,260 INFO L85 PathProgramCache]: Analyzing trace with hash 504, now seen corresponding path program 1 times [2023-08-31 23:25:36,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:25:36,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979851684] [2023-08-31 23:25:36,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:25:36,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:25:36,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:25:36,342 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 23:25:36,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:25:36,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979851684] [2023-08-31 23:25:36,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979851684] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:25:36,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:25:36,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-31 23:25:36,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889835156] [2023-08-31 23:25:36,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:25:36,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-31 23:25:36,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:25:36,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-31 23:25:36,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-31 23:25:36,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 186 [2023-08-31 23:25:36,383 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 60 flow. Second operand has 2 states, 2 states have (on average 85.5) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 0 states 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 23:25:36,383 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:25:36,383 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 186 [2023-08-31 23:25:36,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:25:36,533 INFO L130 PetriNetUnfolder]: 391/658 cut-off events. [2023-08-31 23:25:36,534 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 23:25:36,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1328 conditions, 658 events. 391/658 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2776 event pairs, 391 based on Foata normal form. 32/561 useless extension candidates. Maximal degree in co-relation 1318. Up to 657 conditions per place. [2023-08-31 23:25:36,544 INFO L137 encePairwiseOnDemand]: 181/186 looper letters, 21 selfloop transitions, 0 changer transitions 0/22 dead transitions. [2023-08-31 23:25:36,544 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 22 transitions, 92 flow [2023-08-31 23:25:36,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-31 23:25:36,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-31 23:25:36,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 196 transitions. [2023-08-31 23:25:36,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5268817204301075 [2023-08-31 23:25:36,556 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 196 transitions. [2023-08-31 23:25:36,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 196 transitions. [2023-08-31 23:25:36,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:25:36,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 196 transitions. [2023-08-31 23:25:36,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 98.0) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 0 states 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 23:25:36,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 0 states have call successors, (0), 0 states 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 23:25:36,571 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 0 states have call successors, (0), 0 states 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 23:25:36,573 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 60 flow. Second operand 2 states and 196 transitions. [2023-08-31 23:25:36,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 22 transitions, 92 flow [2023-08-31 23:25:36,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 22 transitions, 90 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:25:36,576 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 48 flow [2023-08-31 23:25:36,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=48, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2023-08-31 23:25:36,582 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -5 predicate places. [2023-08-31 23:25:36,582 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 48 flow [2023-08-31 23:25:36,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 85.5) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 0 states 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 23:25:36,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:25:36,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-31 23:25:36,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 23:25:36,584 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-31 23:25:36,585 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:25:36,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1944279382, now seen corresponding path program 1 times [2023-08-31 23:25:36,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:25:36,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263489463] [2023-08-31 23:25:36,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:25:36,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:25:36,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:25:36,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:25:36,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:25:36,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263489463] [2023-08-31 23:25:36,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263489463] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:25:36,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:25:36,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:25:36,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317935117] [2023-08-31 23:25:36,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:25:36,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:25:36,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:25:36,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:25:36,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:25:36,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 186 [2023-08-31 23:25:36,855 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states 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 23:25:36,855 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:25:36,855 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 186 [2023-08-31 23:25:36,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:25:36,995 INFO L130 PetriNetUnfolder]: 339/574 cut-off events. [2023-08-31 23:25:36,995 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:25:36,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1159 conditions, 574 events. 339/574 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2372 event pairs, 79 based on Foata normal form. 0/489 useless extension candidates. Maximal degree in co-relation 1156. Up to 421 conditions per place. [2023-08-31 23:25:36,999 INFO L137 encePairwiseOnDemand]: 183/186 looper letters, 24 selfloop transitions, 2 changer transitions 4/31 dead transitions. [2023-08-31 23:25:36,999 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 31 transitions, 126 flow [2023-08-31 23:25:36,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:25:36,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:25:37,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 283 transitions. [2023-08-31 23:25:37,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.507168458781362 [2023-08-31 23:25:37,006 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 283 transitions. [2023-08-31 23:25:37,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 283 transitions. [2023-08-31 23:25:37,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:25:37,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 283 transitions. [2023-08-31 23:25:37,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states 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 23:25:37,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states 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 23:25:37,011 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states 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 23:25:37,011 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 48 flow. Second operand 3 states and 283 transitions. [2023-08-31 23:25:37,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 31 transitions, 126 flow [2023-08-31 23:25:37,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 31 transitions, 126 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 23:25:37,014 INFO L231 Difference]: Finished difference. Result has 29 places, 19 transitions, 46 flow [2023-08-31 23:25:37,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=29, PETRI_TRANSITIONS=19} [2023-08-31 23:25:37,015 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -4 predicate places. [2023-08-31 23:25:37,015 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 19 transitions, 46 flow [2023-08-31 23:25:37,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states 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 23:25:37,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:25:37,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:25:37,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 23:25:37,016 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-31 23:25:37,018 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:25:37,019 INFO L85 PathProgramCache]: Analyzing trace with hash 143074765, now seen corresponding path program 1 times [2023-08-31 23:25:37,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:25:37,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878473197] [2023-08-31 23:25:37,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:25:37,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:25:37,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:25:37,433 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 23:25:37,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:25:37,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878473197] [2023-08-31 23:25:37,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878473197] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:25:37,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:25:37,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:25:37,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207894934] [2023-08-31 23:25:37,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:25:37,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:25:37,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:25:37,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:25:37,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:25:37,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 186 [2023-08-31 23:25:37,500 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 19 transitions, 46 flow. Second operand has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states 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 23:25:37,500 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:25:37,501 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 186 [2023-08-31 23:25:37,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:25:37,591 INFO L130 PetriNetUnfolder]: 204/354 cut-off events. [2023-08-31 23:25:37,592 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-31 23:25:37,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 742 conditions, 354 events. 204/354 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1258 event pairs, 166 based on Foata normal form. 0/354 useless extension candidates. Maximal degree in co-relation 738. Up to 348 conditions per place. [2023-08-31 23:25:37,594 INFO L137 encePairwiseOnDemand]: 183/186 looper letters, 18 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2023-08-31 23:25:37,594 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 21 transitions, 90 flow [2023-08-31 23:25:37,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 23:25:37,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 23:25:37,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 321 transitions. [2023-08-31 23:25:37,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4314516129032258 [2023-08-31 23:25:37,596 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 321 transitions. [2023-08-31 23:25:37,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 321 transitions. [2023-08-31 23:25:37,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:25:37,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 321 transitions. [2023-08-31 23:25:37,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 80.25) internal successors, (321), 4 states have internal predecessors, (321), 0 states have call successors, (0), 0 states 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 23:25:37,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 186.0) internal successors, (930), 5 states have internal predecessors, (930), 0 states have call successors, (0), 0 states 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 23:25:37,600 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 186.0) internal successors, (930), 5 states have internal predecessors, (930), 0 states have call successors, (0), 0 states 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 23:25:37,600 INFO L175 Difference]: Start difference. First operand has 29 places, 19 transitions, 46 flow. Second operand 4 states and 321 transitions. [2023-08-31 23:25:37,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 21 transitions, 90 flow [2023-08-31 23:25:37,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 21 transitions, 86 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:25:37,602 INFO L231 Difference]: Finished difference. Result has 27 places, 18 transitions, 44 flow [2023-08-31 23:25:37,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=44, PETRI_PLACES=27, PETRI_TRANSITIONS=18} [2023-08-31 23:25:37,603 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -6 predicate places. [2023-08-31 23:25:37,606 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 18 transitions, 44 flow [2023-08-31 23:25:37,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states 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 23:25:37,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:25:37,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:25:37,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 23:25:37,608 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-31 23:25:37,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:25:37,608 INFO L85 PathProgramCache]: Analyzing trace with hash 143074706, now seen corresponding path program 1 times [2023-08-31 23:25:37,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:25:37,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111325434] [2023-08-31 23:25:37,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:25:37,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:25:37,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:25:38,562 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 23:25:38,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:25:38,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111325434] [2023-08-31 23:25:38,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111325434] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:25:38,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:25:38,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:25:38,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653815716] [2023-08-31 23:25:38,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:25:38,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:25:38,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:25:38,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:25:38,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:25:38,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 186 [2023-08-31 23:25:38,606 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 72.6) internal successors, (363), 5 states have internal predecessors, (363), 0 states have call successors, (0), 0 states 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 23:25:38,606 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:25:38,607 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 186 [2023-08-31 23:25:38,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:25:38,876 INFO L130 PetriNetUnfolder]: 259/458 cut-off events. [2023-08-31 23:25:38,876 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-31 23:25:38,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 938 conditions, 458 events. 259/458 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1689 event pairs, 102 based on Foata normal form. 38/496 useless extension candidates. Maximal degree in co-relation 934. Up to 194 conditions per place. [2023-08-31 23:25:38,879 INFO L137 encePairwiseOnDemand]: 178/186 looper letters, 24 selfloop transitions, 6 changer transitions 19/49 dead transitions. [2023-08-31 23:25:38,879 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 49 transitions, 204 flow [2023-08-31 23:25:38,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 23:25:38,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 23:25:38,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 549 transitions. [2023-08-31 23:25:38,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4216589861751152 [2023-08-31 23:25:38,881 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 549 transitions. [2023-08-31 23:25:38,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 549 transitions. [2023-08-31 23:25:38,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:25:38,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 549 transitions. [2023-08-31 23:25:38,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 78.42857142857143) internal successors, (549), 7 states have internal predecessors, (549), 0 states have call successors, (0), 0 states 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 23:25:38,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 186.0) internal successors, (1488), 8 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states 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 23:25:38,886 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 186.0) internal successors, (1488), 8 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states 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 23:25:38,886 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 44 flow. Second operand 7 states and 549 transitions. [2023-08-31 23:25:38,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 49 transitions, 204 flow [2023-08-31 23:25:38,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 49 transitions, 201 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:25:38,888 INFO L231 Difference]: Finished difference. Result has 37 places, 22 transitions, 97 flow [2023-08-31 23:25:38,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=41, PETRI_DIFFERENCE_MINUEND_PLACES=25, 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=7, PETRI_FLOW=97, PETRI_PLACES=37, PETRI_TRANSITIONS=22} [2023-08-31 23:25:38,889 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2023-08-31 23:25:38,889 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 22 transitions, 97 flow [2023-08-31 23:25:38,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.6) internal successors, (363), 5 states have internal predecessors, (363), 0 states have call successors, (0), 0 states 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 23:25:38,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:25:38,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:25:38,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 23:25:38,890 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-31 23:25:38,890 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:25:38,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1436627916, now seen corresponding path program 1 times [2023-08-31 23:25:38,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:25:38,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606153866] [2023-08-31 23:25:38,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:25:38,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:25:38,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:25:40,022 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 23:25:40,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:25:40,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606153866] [2023-08-31 23:25:40,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606153866] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:25:40,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:25:40,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 23:25:40,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181362443] [2023-08-31 23:25:40,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:25:40,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 23:25:40,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:25:40,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 23:25:40,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-08-31 23:25:40,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 186 [2023-08-31 23:25:40,077 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 22 transitions, 97 flow. Second operand has 9 states, 9 states have (on average 73.33333333333333) internal successors, (660), 9 states have internal predecessors, (660), 0 states have call successors, (0), 0 states 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 23:25:40,077 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:25:40,077 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 186 [2023-08-31 23:25:40,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:25:40,273 INFO L130 PetriNetUnfolder]: 173/325 cut-off events. [2023-08-31 23:25:40,273 INFO L131 PetriNetUnfolder]: For 313/322 co-relation queries the response was YES. [2023-08-31 23:25:40,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 986 conditions, 325 events. 173/325 cut-off events. For 313/322 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1175 event pairs, 105 based on Foata normal form. 25/347 useless extension candidates. Maximal degree in co-relation 977. Up to 258 conditions per place. [2023-08-31 23:25:40,276 INFO L137 encePairwiseOnDemand]: 178/186 looper letters, 28 selfloop transitions, 7 changer transitions 10/47 dead transitions. [2023-08-31 23:25:40,276 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 47 transitions, 276 flow [2023-08-31 23:25:40,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 23:25:40,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 23:25:40,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 547 transitions. [2023-08-31 23:25:40,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4201228878648233 [2023-08-31 23:25:40,278 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 547 transitions. [2023-08-31 23:25:40,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 547 transitions. [2023-08-31 23:25:40,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:25:40,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 547 transitions. [2023-08-31 23:25:40,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 78.14285714285714) internal successors, (547), 7 states have internal predecessors, (547), 0 states have call successors, (0), 0 states 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 23:25:40,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 186.0) internal successors, (1488), 8 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states 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 23:25:40,283 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 186.0) internal successors, (1488), 8 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states 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 23:25:40,283 INFO L175 Difference]: Start difference. First operand has 37 places, 22 transitions, 97 flow. Second operand 7 states and 547 transitions. [2023-08-31 23:25:40,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 47 transitions, 276 flow [2023-08-31 23:25:40,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 47 transitions, 269 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-31 23:25:40,300 INFO L231 Difference]: Finished difference. Result has 43 places, 27 transitions, 141 flow [2023-08-31 23:25:40,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=141, PETRI_PLACES=43, PETRI_TRANSITIONS=27} [2023-08-31 23:25:40,303 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 10 predicate places. [2023-08-31 23:25:40,303 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 27 transitions, 141 flow [2023-08-31 23:25:40,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 73.33333333333333) internal successors, (660), 9 states have internal predecessors, (660), 0 states have call successors, (0), 0 states 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 23:25:40,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:25:40,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:25:40,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 23:25:40,304 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-31 23:25:40,304 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:25:40,305 INFO L85 PathProgramCache]: Analyzing trace with hash 153529822, now seen corresponding path program 1 times [2023-08-31 23:25:40,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:25:40,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267137803] [2023-08-31 23:25:40,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:25:40,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:25:40,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:25:40,774 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 23:25:40,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:25:40,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267137803] [2023-08-31 23:25:40,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267137803] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:25:40,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:25:40,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:25:40,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133475877] [2023-08-31 23:25:40,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:25:40,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:25:40,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:25:40,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:25:40,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:25:40,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 186 [2023-08-31 23:25:40,795 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 27 transitions, 141 flow. Second operand has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:25:40,795 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:25:40,796 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 186 [2023-08-31 23:25:40,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:25:40,910 INFO L130 PetriNetUnfolder]: 147/274 cut-off events. [2023-08-31 23:25:40,910 INFO L131 PetriNetUnfolder]: For 289/295 co-relation queries the response was YES. [2023-08-31 23:25:40,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 970 conditions, 274 events. 147/274 cut-off events. For 289/295 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 931 event pairs, 58 based on Foata normal form. 10/281 useless extension candidates. Maximal degree in co-relation 956. Up to 243 conditions per place. [2023-08-31 23:25:40,913 INFO L137 encePairwiseOnDemand]: 180/186 looper letters, 28 selfloop transitions, 7 changer transitions 0/37 dead transitions. [2023-08-31 23:25:40,913 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 37 transitions, 245 flow [2023-08-31 23:25:40,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 23:25:40,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 23:25:40,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 346 transitions. [2023-08-31 23:25:40,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4650537634408602 [2023-08-31 23:25:40,915 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 346 transitions. [2023-08-31 23:25:40,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 346 transitions. [2023-08-31 23:25:40,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:25:40,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 346 transitions. [2023-08-31 23:25:40,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 86.5) internal successors, (346), 4 states have internal predecessors, (346), 0 states have call successors, (0), 0 states 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 23:25:40,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 186.0) internal successors, (930), 5 states have internal predecessors, (930), 0 states have call successors, (0), 0 states 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 23:25:40,919 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 186.0) internal successors, (930), 5 states have internal predecessors, (930), 0 states have call successors, (0), 0 states 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 23:25:40,919 INFO L175 Difference]: Start difference. First operand has 43 places, 27 transitions, 141 flow. Second operand 4 states and 346 transitions. [2023-08-31 23:25:40,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 37 transitions, 245 flow [2023-08-31 23:25:40,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 37 transitions, 233 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-31 23:25:40,925 INFO L231 Difference]: Finished difference. Result has 42 places, 31 transitions, 178 flow [2023-08-31 23:25:40,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=178, PETRI_PLACES=42, PETRI_TRANSITIONS=31} [2023-08-31 23:25:40,928 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 9 predicate places. [2023-08-31 23:25:40,928 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 31 transitions, 178 flow [2023-08-31 23:25:40,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:25:40,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:25:40,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:25:40,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 23:25:40,930 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-31 23:25:40,930 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:25:40,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1531017426, now seen corresponding path program 2 times [2023-08-31 23:25:40,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:25:40,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325682156] [2023-08-31 23:25:40,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:25:40,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:25:40,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:25:41,262 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 23:25:41,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:25:41,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325682156] [2023-08-31 23:25:41,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325682156] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:25:41,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:25:41,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:25:41,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719501523] [2023-08-31 23:25:41,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:25:41,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:25:41,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:25:41,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:25:41,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:25:41,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 186 [2023-08-31 23:25:41,269 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 31 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states 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 23:25:41,270 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:25:41,270 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 186 [2023-08-31 23:25:41,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:25:41,335 INFO L130 PetriNetUnfolder]: 59/139 cut-off events. [2023-08-31 23:25:41,335 INFO L131 PetriNetUnfolder]: For 305/308 co-relation queries the response was YES. [2023-08-31 23:25:41,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 543 conditions, 139 events. 59/139 cut-off events. For 305/308 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 406 event pairs, 20 based on Foata normal form. 17/154 useless extension candidates. Maximal degree in co-relation 530. Up to 90 conditions per place. [2023-08-31 23:25:41,336 INFO L137 encePairwiseOnDemand]: 182/186 looper letters, 35 selfloop transitions, 4 changer transitions 0/41 dead transitions. [2023-08-31 23:25:41,336 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 41 transitions, 298 flow [2023-08-31 23:25:41,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:25:41,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:25:41,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 275 transitions. [2023-08-31 23:25:41,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.492831541218638 [2023-08-31 23:25:41,338 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 275 transitions. [2023-08-31 23:25:41,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 275 transitions. [2023-08-31 23:25:41,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:25:41,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 275 transitions. [2023-08-31 23:25:41,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states 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 23:25:41,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states 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 23:25:41,340 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states 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 23:25:41,341 INFO L175 Difference]: Start difference. First operand has 42 places, 31 transitions, 178 flow. Second operand 3 states and 275 transitions. [2023-08-31 23:25:41,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 41 transitions, 298 flow [2023-08-31 23:25:41,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 41 transitions, 292 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-31 23:25:41,343 INFO L231 Difference]: Finished difference. Result has 45 places, 32 transitions, 190 flow [2023-08-31 23:25:41,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=45, PETRI_TRANSITIONS=32} [2023-08-31 23:25:41,344 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 12 predicate places. [2023-08-31 23:25:41,344 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 32 transitions, 190 flow [2023-08-31 23:25:41,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states 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 23:25:41,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:25:41,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:25:41,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 23:25:41,345 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-31 23:25:41,345 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:25:41,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1135709544, now seen corresponding path program 1 times [2023-08-31 23:25:41,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:25:41,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694399342] [2023-08-31 23:25:41,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:25:41,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:25:41,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:25:43,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:25:43,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:25:43,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694399342] [2023-08-31 23:25:43,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694399342] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:25:43,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:25:43,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 23:25:43,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735745473] [2023-08-31 23:25:43,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:25:43,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 23:25:43,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:25:43,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 23:25:43,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-08-31 23:25:43,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 186 [2023-08-31 23:25:43,105 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 32 transitions, 190 flow. Second operand has 10 states, 10 states have (on average 74.5) internal successors, (745), 10 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:25:43,106 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:25:43,106 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 186 [2023-08-31 23:25:43,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:25:43,408 INFO L130 PetriNetUnfolder]: 76/182 cut-off events. [2023-08-31 23:25:43,408 INFO L131 PetriNetUnfolder]: For 311/316 co-relation queries the response was YES. [2023-08-31 23:25:43,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 757 conditions, 182 events. 76/182 cut-off events. For 311/316 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 638 event pairs, 4 based on Foata normal form. 9/189 useless extension candidates. Maximal degree in co-relation 742. Up to 115 conditions per place. [2023-08-31 23:25:43,410 INFO L137 encePairwiseOnDemand]: 176/186 looper letters, 35 selfloop transitions, 21 changer transitions 4/62 dead transitions. [2023-08-31 23:25:43,410 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 62 transitions, 491 flow [2023-08-31 23:25:43,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-31 23:25:43,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-31 23:25:43,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 854 transitions. [2023-08-31 23:25:43,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4173998044965787 [2023-08-31 23:25:43,413 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 854 transitions. [2023-08-31 23:25:43,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 854 transitions. [2023-08-31 23:25:43,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:25:43,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 854 transitions. [2023-08-31 23:25:43,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 77.63636363636364) internal successors, (854), 11 states have internal predecessors, (854), 0 states have call successors, (0), 0 states 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 23:25:43,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 186.0) internal successors, (2232), 12 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states 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 23:25:43,418 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 186.0) internal successors, (2232), 12 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states 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 23:25:43,419 INFO L175 Difference]: Start difference. First operand has 45 places, 32 transitions, 190 flow. Second operand 11 states and 854 transitions. [2023-08-31 23:25:43,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 62 transitions, 491 flow [2023-08-31 23:25:43,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 62 transitions, 473 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-31 23:25:43,422 INFO L231 Difference]: Finished difference. Result has 59 places, 44 transitions, 337 flow [2023-08-31 23:25:43,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=337, PETRI_PLACES=59, PETRI_TRANSITIONS=44} [2023-08-31 23:25:43,423 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 26 predicate places. [2023-08-31 23:25:43,423 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 44 transitions, 337 flow [2023-08-31 23:25:43,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 74.5) internal successors, (745), 10 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:25:43,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:25:43,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:25:43,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 23:25:43,424 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-31 23:25:43,425 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:25:43,425 INFO L85 PathProgramCache]: Analyzing trace with hash -466761292, now seen corresponding path program 2 times [2023-08-31 23:25:43,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:25:43,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512465749] [2023-08-31 23:25:43,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:25:43,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:25:43,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:25:44,647 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 23:25:44,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:25:44,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512465749] [2023-08-31 23:25:44,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512465749] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:25:44,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:25:44,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 23:25:44,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533098463] [2023-08-31 23:25:44,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:25:44,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 23:25:44,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:25:44,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 23:25:44,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-08-31 23:25:44,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 186 [2023-08-31 23:25:44,733 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 44 transitions, 337 flow. Second operand has 9 states, 9 states have (on average 74.66666666666667) internal successors, (672), 9 states have internal predecessors, (672), 0 states have call successors, (0), 0 states 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 23:25:44,733 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:25:44,733 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 186 [2023-08-31 23:25:44,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:25:45,068 INFO L130 PetriNetUnfolder]: 106/254 cut-off events. [2023-08-31 23:25:45,068 INFO L131 PetriNetUnfolder]: For 735/742 co-relation queries the response was YES. [2023-08-31 23:25:45,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1197 conditions, 254 events. 106/254 cut-off events. For 735/742 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1074 event pairs, 18 based on Foata normal form. 12/263 useless extension candidates. Maximal degree in co-relation 1177. Up to 101 conditions per place. [2023-08-31 23:25:45,070 INFO L137 encePairwiseOnDemand]: 178/186 looper letters, 45 selfloop transitions, 18 changer transitions 14/79 dead transitions. [2023-08-31 23:25:45,070 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 79 transitions, 744 flow [2023-08-31 23:25:45,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 23:25:45,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 23:25:45,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 635 transitions. [2023-08-31 23:25:45,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.426747311827957 [2023-08-31 23:25:45,073 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 635 transitions. [2023-08-31 23:25:45,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 635 transitions. [2023-08-31 23:25:45,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:25:45,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 635 transitions. [2023-08-31 23:25:45,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 79.375) internal successors, (635), 8 states have internal predecessors, (635), 0 states have call successors, (0), 0 states 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 23:25:45,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 186.0) internal successors, (1674), 9 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states 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 23:25:45,078 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 186.0) internal successors, (1674), 9 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states 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 23:25:45,078 INFO L175 Difference]: Start difference. First operand has 59 places, 44 transitions, 337 flow. Second operand 8 states and 635 transitions. [2023-08-31 23:25:45,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 79 transitions, 744 flow [2023-08-31 23:25:45,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 79 transitions, 700 flow, removed 19 selfloop flow, removed 4 redundant places. [2023-08-31 23:25:45,082 INFO L231 Difference]: Finished difference. Result has 64 places, 46 transitions, 367 flow [2023-08-31 23:25:45,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=367, PETRI_PLACES=64, PETRI_TRANSITIONS=46} [2023-08-31 23:25:45,083 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 31 predicate places. [2023-08-31 23:25:45,083 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 46 transitions, 367 flow [2023-08-31 23:25:45,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 74.66666666666667) internal successors, (672), 9 states have internal predecessors, (672), 0 states have call successors, (0), 0 states 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 23:25:45,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:25:45,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:25:45,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 23:25:45,084 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-31 23:25:45,085 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:25:45,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1377209262, now seen corresponding path program 3 times [2023-08-31 23:25:45,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:25:45,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637504107] [2023-08-31 23:25:45,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:25:45,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:25:45,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:25:45,325 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 23:25:45,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:25:45,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637504107] [2023-08-31 23:25:45,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637504107] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:25:45,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:25:45,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:25:45,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552761705] [2023-08-31 23:25:45,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:25:45,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:25:45,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:25:45,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:25:45,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:25:45,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 186 [2023-08-31 23:25:45,334 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 46 transitions, 367 flow. Second operand has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 0 states have call successors, (0), 0 states 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 23:25:45,334 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:25:45,334 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 186 [2023-08-31 23:25:45,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:25:45,402 INFO L130 PetriNetUnfolder]: 41/118 cut-off events. [2023-08-31 23:25:45,403 INFO L131 PetriNetUnfolder]: For 450/452 co-relation queries the response was YES. [2023-08-31 23:25:45,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 591 conditions, 118 events. 41/118 cut-off events. For 450/452 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 404 event pairs, 7 based on Foata normal form. 20/135 useless extension candidates. Maximal degree in co-relation 568. Up to 64 conditions per place. [2023-08-31 23:25:45,404 INFO L137 encePairwiseOnDemand]: 182/186 looper letters, 32 selfloop transitions, 5 changer transitions 16/55 dead transitions. [2023-08-31 23:25:45,404 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 55 transitions, 544 flow [2023-08-31 23:25:45,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 23:25:45,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 23:25:45,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 357 transitions. [2023-08-31 23:25:45,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4798387096774194 [2023-08-31 23:25:45,406 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 357 transitions. [2023-08-31 23:25:45,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 357 transitions. [2023-08-31 23:25:45,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:25:45,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 357 transitions. [2023-08-31 23:25:45,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 89.25) internal successors, (357), 4 states have internal predecessors, (357), 0 states have call successors, (0), 0 states 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 23:25:45,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 186.0) internal successors, (930), 5 states have internal predecessors, (930), 0 states have call successors, (0), 0 states 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 23:25:45,409 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 186.0) internal successors, (930), 5 states have internal predecessors, (930), 0 states have call successors, (0), 0 states 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 23:25:45,409 INFO L175 Difference]: Start difference. First operand has 64 places, 46 transitions, 367 flow. Second operand 4 states and 357 transitions. [2023-08-31 23:25:45,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 55 transitions, 544 flow [2023-08-31 23:25:45,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 55 transitions, 471 flow, removed 23 selfloop flow, removed 7 redundant places. [2023-08-31 23:25:45,413 INFO L231 Difference]: Finished difference. Result has 60 places, 32 transitions, 218 flow [2023-08-31 23:25:45,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=218, PETRI_PLACES=60, PETRI_TRANSITIONS=32} [2023-08-31 23:25:45,414 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 27 predicate places. [2023-08-31 23:25:45,414 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 32 transitions, 218 flow [2023-08-31 23:25:45,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 0 states have call successors, (0), 0 states 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 23:25:45,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:25:45,415 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 23:25:45,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-31 23:25:45,415 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-31 23:25:45,416 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:25:45,416 INFO L85 PathProgramCache]: Analyzing trace with hash 250722467, now seen corresponding path program 1 times [2023-08-31 23:25:45,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:25:45,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314486682] [2023-08-31 23:25:45,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:25:45,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:25:45,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:25:45,642 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 23:25:45,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:25:45,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314486682] [2023-08-31 23:25:45,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314486682] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:25:45,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:25:45,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:25:45,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410949624] [2023-08-31 23:25:45,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:25:45,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:25:45,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:25:45,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:25:45,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:25:45,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 186 [2023-08-31 23:25:45,653 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 32 transitions, 218 flow. Second operand has 4 states, 4 states have (on average 82.5) internal successors, (330), 4 states have internal predecessors, (330), 0 states have call successors, (0), 0 states 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 23:25:45,653 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:25:45,653 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 186 [2023-08-31 23:25:45,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:25:45,741 INFO L130 PetriNetUnfolder]: 28/92 cut-off events. [2023-08-31 23:25:45,741 INFO L131 PetriNetUnfolder]: For 258/258 co-relation queries the response was YES. [2023-08-31 23:25:45,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 425 conditions, 92 events. 28/92 cut-off events. For 258/258 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 245 event pairs, 10 based on Foata normal form. 1/93 useless extension candidates. Maximal degree in co-relation 405. Up to 47 conditions per place. [2023-08-31 23:25:45,742 INFO L137 encePairwiseOnDemand]: 182/186 looper letters, 20 selfloop transitions, 2 changer transitions 25/47 dead transitions. [2023-08-31 23:25:45,742 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 47 transitions, 403 flow [2023-08-31 23:25:45,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 23:25:45,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 23:25:45,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 344 transitions. [2023-08-31 23:25:45,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46236559139784944 [2023-08-31 23:25:45,744 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 344 transitions. [2023-08-31 23:25:45,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 344 transitions. [2023-08-31 23:25:45,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:25:45,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 344 transitions. [2023-08-31 23:25:45,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 0 states have call successors, (0), 0 states 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 23:25:45,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 186.0) internal successors, (930), 5 states have internal predecessors, (930), 0 states have call successors, (0), 0 states 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 23:25:45,747 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 186.0) internal successors, (930), 5 states have internal predecessors, (930), 0 states have call successors, (0), 0 states 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 23:25:45,747 INFO L175 Difference]: Start difference. First operand has 60 places, 32 transitions, 218 flow. Second operand 4 states and 344 transitions. [2023-08-31 23:25:45,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 47 transitions, 403 flow [2023-08-31 23:25:45,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 47 transitions, 318 flow, removed 21 selfloop flow, removed 12 redundant places. [2023-08-31 23:25:45,750 INFO L231 Difference]: Finished difference. Result has 51 places, 20 transitions, 99 flow [2023-08-31 23:25:45,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=99, PETRI_PLACES=51, PETRI_TRANSITIONS=20} [2023-08-31 23:25:45,751 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 18 predicate places. [2023-08-31 23:25:45,751 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 20 transitions, 99 flow [2023-08-31 23:25:45,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.5) internal successors, (330), 4 states have internal predecessors, (330), 0 states have call successors, (0), 0 states 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 23:25:45,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:25:45,751 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 23:25:45,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 23:25:45,752 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-31 23:25:45,752 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:25:45,752 INFO L85 PathProgramCache]: Analyzing trace with hash 2100427253, now seen corresponding path program 2 times [2023-08-31 23:25:45,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:25:45,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730691040] [2023-08-31 23:25:45,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:25:45,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:25:45,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:25:47,220 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 23:25:47,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:25:47,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730691040] [2023-08-31 23:25:47,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730691040] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:25:47,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:25:47,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 23:25:47,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430116389] [2023-08-31 23:25:47,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:25:47,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 23:25:47,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:25:47,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 23:25:47,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-08-31 23:25:47,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 186 [2023-08-31 23:25:47,298 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 20 transitions, 99 flow. Second operand has 10 states, 10 states have (on average 74.7) internal successors, (747), 10 states have internal predecessors, (747), 0 states have call successors, (0), 0 states 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 23:25:47,298 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:25:47,298 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 186 [2023-08-31 23:25:47,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:25:47,439 INFO L130 PetriNetUnfolder]: 6/31 cut-off events. [2023-08-31 23:25:47,440 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2023-08-31 23:25:47,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 31 events. 6/31 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 30 event pairs, 0 based on Foata normal form. 1/32 useless extension candidates. Maximal degree in co-relation 109. Up to 8 conditions per place. [2023-08-31 23:25:47,440 INFO L137 encePairwiseOnDemand]: 178/186 looper letters, 0 selfloop transitions, 0 changer transitions 24/24 dead transitions. [2023-08-31 23:25:47,440 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 24 transitions, 166 flow [2023-08-31 23:25:47,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 23:25:47,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 23:25:47,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 679 transitions. [2023-08-31 23:25:47,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4056152927120669 [2023-08-31 23:25:47,442 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 679 transitions. [2023-08-31 23:25:47,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 679 transitions. [2023-08-31 23:25:47,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:25:47,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 679 transitions. [2023-08-31 23:25:47,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 75.44444444444444) internal successors, (679), 9 states have internal predecessors, (679), 0 states have call successors, (0), 0 states 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 23:25:47,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 186.0) internal successors, (1860), 10 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states 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 23:25:47,446 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 186.0) internal successors, (1860), 10 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states 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 23:25:47,446 INFO L175 Difference]: Start difference. First operand has 51 places, 20 transitions, 99 flow. Second operand 9 states and 679 transitions. [2023-08-31 23:25:47,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 24 transitions, 166 flow [2023-08-31 23:25:47,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 24 transitions, 134 flow, removed 5 selfloop flow, removed 13 redundant places. [2023-08-31 23:25:47,447 INFO L231 Difference]: Finished difference. Result has 39 places, 0 transitions, 0 flow [2023-08-31 23:25:47,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=31, 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=9, PETRI_FLOW=0, PETRI_PLACES=39, PETRI_TRANSITIONS=0} [2023-08-31 23:25:47,448 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 6 predicate places. [2023-08-31 23:25:47,448 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 0 transitions, 0 flow [2023-08-31 23:25:47,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 74.7) internal successors, (747), 10 states have internal predecessors, (747), 0 states have call successors, (0), 0 states 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 23:25:47,451 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONMEMORY_LEAK (9 of 10 remaining) [2023-08-31 23:25:47,452 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 10 remaining) [2023-08-31 23:25:47,452 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining) [2023-08-31 23:25:47,452 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 10 remaining) [2023-08-31 23:25:47,452 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 10 remaining) [2023-08-31 23:25:47,453 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (4 of 10 remaining) [2023-08-31 23:25:47,453 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (3 of 10 remaining) [2023-08-31 23:25:47,453 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 10 remaining) [2023-08-31 23:25:47,453 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 10 remaining) [2023-08-31 23:25:47,453 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 10 remaining) [2023-08-31 23:25:47,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-31 23:25:47,454 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1, 1] [2023-08-31 23:25:47,458 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-31 23:25:47,458 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-31 23:25:47,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.08 11:25:47 BasicIcfg [2023-08-31 23:25:47,460 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-31 23:25:47,461 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-31 23:25:47,461 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-31 23:25:47,461 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-31 23:25:47,461 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:25:32" (3/4) ... [2023-08-31 23:25:47,463 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-31 23:25:47,467 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-08-31 23:25:47,467 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-08-31 23:25:47,471 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 33 nodes and edges [2023-08-31 23:25:47,472 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-08-31 23:25:47,472 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-31 23:25:47,472 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-31 23:25:47,508 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-31 23:25:47,508 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-31 23:25:47,508 INFO L158 Benchmark]: Toolchain (without parser) took 16547.48ms. Allocated memory was 77.6MB in the beginning and 337.6MB in the end (delta: 260.0MB). Free memory was 54.2MB in the beginning and 267.6MB in the end (delta: -213.4MB). Peak memory consumption was 48.8MB. Max. memory is 16.1GB. [2023-08-31 23:25:47,509 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 60.8MB. Free memory was 38.8MB in the beginning and 38.7MB in the end (delta: 97.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 23:25:47,509 INFO L158 Benchmark]: CACSL2BoogieTranslator took 575.84ms. Allocated memory is still 77.6MB. Free memory was 53.9MB in the beginning and 47.5MB in the end (delta: 6.4MB). Peak memory consumption was 19.3MB. Max. memory is 16.1GB. [2023-08-31 23:25:47,509 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.16ms. Allocated memory is still 77.6MB. Free memory was 47.5MB in the beginning and 44.1MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-31 23:25:47,509 INFO L158 Benchmark]: Boogie Preprocessor took 67.58ms. Allocated memory is still 77.6MB. Free memory was 44.1MB in the beginning and 42.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 23:25:47,510 INFO L158 Benchmark]: RCFGBuilder took 809.24ms. Allocated memory is still 77.6MB. Free memory was 42.0MB in the beginning and 39.8MB in the end (delta: 2.2MB). Peak memory consumption was 17.6MB. Max. memory is 16.1GB. [2023-08-31 23:25:47,510 INFO L158 Benchmark]: TraceAbstraction took 14964.71ms. Allocated memory was 77.6MB in the beginning and 337.6MB in the end (delta: 260.0MB). Free memory was 39.0MB in the beginning and 270.7MB in the end (delta: -231.7MB). Peak memory consumption was 28.8MB. Max. memory is 16.1GB. [2023-08-31 23:25:47,510 INFO L158 Benchmark]: Witness Printer took 47.15ms. Allocated memory is still 337.6MB. Free memory was 270.7MB in the beginning and 267.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 23:25:47,512 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 60.8MB. Free memory was 38.8MB in the beginning and 38.7MB in the end (delta: 97.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 575.84ms. Allocated memory is still 77.6MB. Free memory was 53.9MB in the beginning and 47.5MB in the end (delta: 6.4MB). Peak memory consumption was 19.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 72.16ms. Allocated memory is still 77.6MB. Free memory was 47.5MB in the beginning and 44.1MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.58ms. Allocated memory is still 77.6MB. Free memory was 44.1MB in the beginning and 42.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 809.24ms. Allocated memory is still 77.6MB. Free memory was 42.0MB in the beginning and 39.8MB in the end (delta: 2.2MB). Peak memory consumption was 17.6MB. Max. memory is 16.1GB. * TraceAbstraction took 14964.71ms. Allocated memory was 77.6MB in the beginning and 337.6MB in the end (delta: 260.0MB). Free memory was 39.0MB in the beginning and 270.7MB in the end (delta: -231.7MB). Peak memory consumption was 28.8MB. Max. memory is 16.1GB. * Witness Printer took 47.15ms. Allocated memory is still 337.6MB. Free memory was 270.7MB in the beginning and 267.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.6s, 101 PlacesBefore, 33 PlacesAfterwards, 96 TransitionsBefore, 27 TransitionsAfterwards, 1286 CoEnabledTransitionPairs, 7 FixpointIterations, 40 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 88 TotalNumberOfCompositions, 4279 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2038, independent: 1848, independent conditional: 0, independent unconditional: 1848, dependent: 190, dependent conditional: 0, dependent unconditional: 190, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 710, independent: 673, independent conditional: 0, independent unconditional: 673, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2038, independent: 1175, independent conditional: 0, independent unconditional: 1175, dependent: 153, dependent conditional: 0, dependent unconditional: 153, unknown: 710, unknown conditional: 0, unknown unconditional: 710] , Statistics on independence cache: Total cache size (in pairs): 86, Positive cache size: 71, Positive conditional cache size: 0, Positive unconditional cache size: 71, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -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: 824]: 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 5 procedures, 118 locations, 10 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: 14.9s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 482 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 346 mSDsluCounter, 506 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 469 mSDsCounter, 152 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1464 IncrementalHoareTripleChecker+Invalid, 1616 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 152 mSolverCounterUnsat, 37 mSDtfsCounter, 1464 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=367occurred in iteration=9, InterpolantAutomatonStates: 66, 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, 0.4s SatisfiabilityAnalysisTime, 7.9s InterpolantComputationTime, 142 NumberOfCodeBlocks, 142 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 130 ConstructedInterpolants, 0 QuantifiedInterpolants, 1722 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-31 23:25:47,540 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE