./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.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 26c7def9550acbb8db0f014014632a2eeeeca7df9ce503e9999e1bc5b1d84980 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 20:41:03,071 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 20:41:03,073 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 20:41:03,103 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 20:41:03,103 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 20:41:03,104 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 20:41:03,110 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 20:41:03,113 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 20:41:03,115 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 20:41:03,116 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 20:41:03,117 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 20:41:03,120 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 20:41:03,120 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 20:41:03,124 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 20:41:03,125 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 20:41:03,129 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 20:41:03,130 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 20:41:03,131 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 20:41:03,134 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 20:41:03,138 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 20:41:03,139 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 20:41:03,150 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 20:41:03,151 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 20:41:03,151 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 20:41:03,153 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 20:41:03,154 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 20:41:03,154 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 20:41:03,157 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 20:41:03,158 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 20:41:03,159 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 20:41:03,159 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 20:41:03,160 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 20:41:03,162 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 20:41:03,162 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 20:41:03,163 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 20:41:03,164 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 20:41:03,164 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 20:41:03,164 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 20:41:03,165 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 20:41:03,165 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 20:41:03,166 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 20:41:03,167 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 20:41:03,205 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 20:41:03,205 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 20:41:03,206 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 20:41:03,207 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 20:41:03,207 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 20:41:03,208 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 20:41:03,208 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 20:41:03,208 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 20:41:03,209 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 20:41:03,209 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 20:41:03,209 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 20:41:03,210 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 20:41:03,210 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 20:41:03,210 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 20:41:03,210 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 20:41:03,210 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 20:41:03,211 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 20:41:03,211 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 20:41:03,211 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 20:41:03,211 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 20:41:03,211 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 20:41:03,212 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 20:41:03,212 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 20:41:03,212 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 20:41:03,212 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 20:41:03,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 20:41:03,213 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 20:41:03,213 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 20:41:03,213 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 20:41:03,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 20:41:03,213 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 20:41:03,214 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 20:41:03,214 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 20:41:03,214 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 20:41:03,214 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26c7def9550acbb8db0f014014632a2eeeeca7df9ce503e9999e1bc5b1d84980 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 20:41:03,521 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 20:41:03,545 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 20:41:03,547 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 20:41:03,548 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 20:41:03,549 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 20:41:03,550 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-29 20:41:04,712 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 20:41:04,950 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 20:41:04,951 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-29 20:41:04,963 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c90980ca/904d5e6b2b7649a7b53c566d489a318f/FLAG384856ac3 [2023-08-29 20:41:04,977 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c90980ca/904d5e6b2b7649a7b53c566d489a318f [2023-08-29 20:41:04,978 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 20:41:04,979 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 20:41:04,981 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 20:41:04,981 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 20:41:04,983 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 20:41:04,984 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:41:04" (1/1) ... [2023-08-29 20:41:04,985 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e09acc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:41:04, skipping insertion in model container [2023-08-29 20:41:04,985 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:41:04" (1/1) ... [2023-08-29 20:41:04,990 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 20:41:05,031 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 20:41:05,198 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/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-08-29 20:41:05,374 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:41:05,385 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 20:41:05,400 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/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-08-29 20:41:05,442 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:41:05,480 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 20:41:05,480 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 20:41:05,486 INFO L208 MainTranslator]: Completed translation [2023-08-29 20:41:05,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:41:05 WrapperNode [2023-08-29 20:41:05,487 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 20:41:05,488 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 20:41:05,488 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 20:41:05,489 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 20:41:05,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:41:05" (1/1) ... [2023-08-29 20:41:05,521 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:41:05" (1/1) ... [2023-08-29 20:41:05,546 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2023-08-29 20:41:05,546 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 20:41:05,547 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 20:41:05,547 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 20:41:05,548 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 20:41:05,556 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:41:05" (1/1) ... [2023-08-29 20:41:05,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:41:05" (1/1) ... [2023-08-29 20:41:05,572 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:41:05" (1/1) ... [2023-08-29 20:41:05,573 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:41:05" (1/1) ... [2023-08-29 20:41:05,577 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:41:05" (1/1) ... [2023-08-29 20:41:05,586 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:41:05" (1/1) ... [2023-08-29 20:41:05,588 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:41:05" (1/1) ... [2023-08-29 20:41:05,592 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:41:05" (1/1) ... [2023-08-29 20:41:05,607 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 20:41:05,611 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 20:41:05,612 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 20:41:05,612 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 20:41:05,613 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:41:05" (1/1) ... [2023-08-29 20:41:05,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 20:41:05,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 20:41:05,657 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 20:41:05,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 20:41:05,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 20:41:05,695 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-29 20:41:05,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 20:41:05,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 20:41:05,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 20:41:05,696 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-29 20:41:05,696 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-29 20:41:05,696 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-29 20:41:05,696 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-29 20:41:05,696 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-29 20:41:05,696 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-29 20:41:05,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 20:41:05,697 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-29 20:41:05,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 20:41:05,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 20:41:05,698 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 20:41:05,801 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 20:41:05,802 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 20:41:05,959 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 20:41:05,965 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 20:41:05,965 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-29 20:41:05,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:41:05 BoogieIcfgContainer [2023-08-29 20:41:05,967 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 20:41:05,969 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 20:41:05,969 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 20:41:05,971 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 20:41:05,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 08:41:04" (1/3) ... [2023-08-29 20:41:05,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2063a07f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:41:05, skipping insertion in model container [2023-08-29 20:41:05,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:41:05" (2/3) ... [2023-08-29 20:41:05,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2063a07f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:41:05, skipping insertion in model container [2023-08-29 20:41:05,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:41:05" (3/3) ... [2023-08-29 20:41:05,974 INFO L112 eAbstractionObserver]: Analyzing ICFG safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-29 20:41:05,987 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 20:41:05,987 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-29 20:41:05,988 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 20:41:06,049 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 20:41:06,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 95 transitions, 205 flow [2023-08-29 20:41:06,128 INFO L130 PetriNetUnfolder]: 2/92 cut-off events. [2023-08-29 20:41:06,128 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:41:06,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 92 events. 2/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 64 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 71. Up to 2 conditions per place. [2023-08-29 20:41:06,133 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 95 transitions, 205 flow [2023-08-29 20:41:06,136 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 88 transitions, 185 flow [2023-08-29 20:41:06,139 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 20:41:06,146 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 88 transitions, 185 flow [2023-08-29 20:41:06,148 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 96 places, 88 transitions, 185 flow [2023-08-29 20:41:06,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 88 transitions, 185 flow [2023-08-29 20:41:06,172 INFO L130 PetriNetUnfolder]: 2/88 cut-off events. [2023-08-29 20:41:06,175 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:41:06,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 88 events. 2/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2023-08-29 20:41:06,177 INFO L119 LiptonReduction]: Number of co-enabled transitions 1512 [2023-08-29 20:41:08,787 INFO L134 LiptonReduction]: Checked pairs total: 3133 [2023-08-29 20:41:08,787 INFO L136 LiptonReduction]: Total number of compositions: 89 [2023-08-29 20:41:08,799 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 20:41:08,807 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;@3ccd23, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 20:41:08,807 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-08-29 20:41:08,808 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 20:41:08,808 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:41:08,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:41:08,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 20:41:08,810 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-29 20:41:08,813 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:41:08,814 INFO L85 PathProgramCache]: Analyzing trace with hash 339, now seen corresponding path program 1 times [2023-08-29 20:41:08,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:41:08,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648995138] [2023-08-29 20:41:08,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:41:08,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:41:08,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:41:08,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:41:08,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:41:08,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648995138] [2023-08-29 20:41:08,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648995138] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:41:08,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:41:08,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 20:41:08,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124381285] [2023-08-29 20:41:08,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:41:08,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 20:41:08,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:41:08,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 20:41:08,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 20:41:08,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 184 [2023-08-29 20:41:08,952 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 61 flow. Second operand has 2 states, 2 states have (on average 89.5) internal successors, (179), 2 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:08,952 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:41:08,952 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 184 [2023-08-29 20:41:08,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:41:09,079 INFO L130 PetriNetUnfolder]: 272/455 cut-off events. [2023-08-29 20:41:09,080 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 20:41:09,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 918 conditions, 455 events. 272/455 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 1986 event pairs, 272 based on Foata normal form. 0/415 useless extension candidates. Maximal degree in co-relation 907. Up to 433 conditions per place. [2023-08-29 20:41:09,086 INFO L137 encePairwiseOnDemand]: 177/184 looper letters, 16 selfloop transitions, 0 changer transitions 0/19 dead transitions. [2023-08-29 20:41:09,087 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 19 transitions, 79 flow [2023-08-29 20:41:09,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 20:41:09,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 20:41:09,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 201 transitions. [2023-08-29 20:41:09,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5461956521739131 [2023-08-29 20:41:09,098 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 201 transitions. [2023-08-29 20:41:09,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 201 transitions. [2023-08-29 20:41:09,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:41:09,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 201 transitions. [2023-08-29 20:41:09,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 100.5) internal successors, (201), 2 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:09,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:09,106 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:09,107 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 61 flow. Second operand 2 states and 201 transitions. [2023-08-29 20:41:09,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 19 transitions, 79 flow [2023-08-29 20:41:09,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 19 transitions, 76 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-29 20:41:09,111 INFO L231 Difference]: Finished difference. Result has 27 places, 19 transitions, 44 flow [2023-08-29 20:41:09,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=44, PETRI_PLACES=27, PETRI_TRANSITIONS=19} [2023-08-29 20:41:09,115 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -8 predicate places. [2023-08-29 20:41:09,115 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 44 flow [2023-08-29 20:41:09,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 89.5) internal successors, (179), 2 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:09,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:41:09,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:41:09,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 20:41:09,116 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-29 20:41:09,117 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:41:09,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1617700446, now seen corresponding path program 1 times [2023-08-29 20:41:09,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:41:09,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766022228] [2023-08-29 20:41:09,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:41:09,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:41:09,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:41:09,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:41:09,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:41:09,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766022228] [2023-08-29 20:41:09,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766022228] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:41:09,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:41:09,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 20:41:09,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332620048] [2023-08-29 20:41:09,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:41:09,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 20:41:09,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:41:09,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 20:41:09,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-29 20:41:09,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 184 [2023-08-29 20:41:09,840 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 44 flow. Second operand has 6 states, 6 states have (on average 75.5) internal successors, (453), 6 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:09,840 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:41:09,840 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 184 [2023-08-29 20:41:09,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:41:09,988 INFO L130 PetriNetUnfolder]: 372/664 cut-off events. [2023-08-29 20:41:09,989 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:41:09,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1306 conditions, 664 events. 372/664 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3538 event pairs, 126 based on Foata normal form. 0/643 useless extension candidates. Maximal degree in co-relation 1303. Up to 275 conditions per place. [2023-08-29 20:41:09,995 INFO L137 encePairwiseOnDemand]: 179/184 looper letters, 34 selfloop transitions, 6 changer transitions 0/43 dead transitions. [2023-08-29 20:41:09,995 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 43 transitions, 178 flow [2023-08-29 20:41:09,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 20:41:09,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 20:41:10,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 486 transitions. [2023-08-29 20:41:10,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44021739130434784 [2023-08-29 20:41:10,002 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 486 transitions. [2023-08-29 20:41:10,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 486 transitions. [2023-08-29 20:41:10,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:41:10,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 486 transitions. [2023-08-29 20:41:10,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:10,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 184.0) internal successors, (1288), 7 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:10,011 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 184.0) internal successors, (1288), 7 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:10,011 INFO L175 Difference]: Start difference. First operand has 27 places, 19 transitions, 44 flow. Second operand 6 states and 486 transitions. [2023-08-29 20:41:10,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 43 transitions, 178 flow [2023-08-29 20:41:10,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 43 transitions, 178 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 20:41:10,013 INFO L231 Difference]: Finished difference. Result has 36 places, 23 transitions, 81 flow [2023-08-29 20:41:10,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=81, PETRI_PLACES=36, PETRI_TRANSITIONS=23} [2023-08-29 20:41:10,014 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 1 predicate places. [2023-08-29 20:41:10,014 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 23 transitions, 81 flow [2023-08-29 20:41:10,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.5) internal successors, (453), 6 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:10,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:41:10,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:41:10,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 20:41:10,017 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-29 20:41:10,019 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:41:10,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1617700489, now seen corresponding path program 1 times [2023-08-29 20:41:10,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:41:10,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676847968] [2023-08-29 20:41:10,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:41:10,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:41:10,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:41:10,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:41:10,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:41:10,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676847968] [2023-08-29 20:41:10,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676847968] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:41:10,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:41:10,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 20:41:10,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163595845] [2023-08-29 20:41:10,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:41:10,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 20:41:10,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:41:10,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 20:41:10,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 20:41:10,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 184 [2023-08-29 20:41:10,263 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 23 transitions, 81 flow. Second operand has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:10,263 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:41:10,264 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 184 [2023-08-29 20:41:10,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:41:10,522 INFO L130 PetriNetUnfolder]: 1343/2197 cut-off events. [2023-08-29 20:41:10,523 INFO L131 PetriNetUnfolder]: For 464/464 co-relation queries the response was YES. [2023-08-29 20:41:10,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4824 conditions, 2197 events. 1343/2197 cut-off events. For 464/464 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 12754 event pairs, 353 based on Foata normal form. 128/2323 useless extension candidates. Maximal degree in co-relation 4816. Up to 916 conditions per place. [2023-08-29 20:41:10,535 INFO L137 encePairwiseOnDemand]: 175/184 looper letters, 41 selfloop transitions, 15 changer transitions 2/59 dead transitions. [2023-08-29 20:41:10,536 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 59 transitions, 308 flow [2023-08-29 20:41:10,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 20:41:10,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 20:41:10,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 449 transitions. [2023-08-29 20:41:10,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4880434782608696 [2023-08-29 20:41:10,538 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 449 transitions. [2023-08-29 20:41:10,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 449 transitions. [2023-08-29 20:41:10,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:41:10,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 449 transitions. [2023-08-29 20:41:10,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 89.8) internal successors, (449), 5 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:10,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:10,542 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:10,542 INFO L175 Difference]: Start difference. First operand has 36 places, 23 transitions, 81 flow. Second operand 5 states and 449 transitions. [2023-08-29 20:41:10,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 59 transitions, 308 flow [2023-08-29 20:41:10,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 59 transitions, 304 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 20:41:10,547 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 210 flow [2023-08-29 20:41:10,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=210, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2023-08-29 20:41:10,548 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 8 predicate places. [2023-08-29 20:41:10,551 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 210 flow [2023-08-29 20:41:10,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:10,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:41:10,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:41:10,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 20:41:10,552 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-29 20:41:10,552 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:41:10,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1789703479, now seen corresponding path program 1 times [2023-08-29 20:41:10,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:41:10,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392146648] [2023-08-29 20:41:10,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:41:10,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:41:10,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:41:10,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:41:10,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:41:10,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392146648] [2023-08-29 20:41:10,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392146648] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:41:10,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:41:10,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 20:41:10,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334148460] [2023-08-29 20:41:10,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:41:10,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 20:41:10,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:41:10,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 20:41:10,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-29 20:41:11,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 184 [2023-08-29 20:41:11,049 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 210 flow. Second operand has 7 states, 7 states have (on average 72.42857142857143) internal successors, (507), 7 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:11,049 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:41:11,049 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 184 [2023-08-29 20:41:11,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:41:11,438 INFO L130 PetriNetUnfolder]: 1847/3069 cut-off events. [2023-08-29 20:41:11,439 INFO L131 PetriNetUnfolder]: For 5709/5804 co-relation queries the response was YES. [2023-08-29 20:41:11,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8879 conditions, 3069 events. 1847/3069 cut-off events. For 5709/5804 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 19326 event pairs, 1081 based on Foata normal form. 355/3375 useless extension candidates. Maximal degree in co-relation 8868. Up to 1920 conditions per place. [2023-08-29 20:41:11,456 INFO L137 encePairwiseOnDemand]: 179/184 looper letters, 43 selfloop transitions, 8 changer transitions 3/59 dead transitions. [2023-08-29 20:41:11,456 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 59 transitions, 394 flow [2023-08-29 20:41:11,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 20:41:11,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 20:41:11,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 536 transitions. [2023-08-29 20:41:11,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161490683229814 [2023-08-29 20:41:11,459 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 536 transitions. [2023-08-29 20:41:11,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 536 transitions. [2023-08-29 20:41:11,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:41:11,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 536 transitions. [2023-08-29 20:41:11,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:11,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 184.0) internal successors, (1472), 8 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:11,464 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 184.0) internal successors, (1472), 8 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:11,464 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 210 flow. Second operand 7 states and 536 transitions. [2023-08-29 20:41:11,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 59 transitions, 394 flow [2023-08-29 20:41:11,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 59 transitions, 389 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 20:41:11,468 INFO L231 Difference]: Finished difference. Result has 46 places, 33 transitions, 189 flow [2023-08-29 20:41:11,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=189, PETRI_PLACES=46, PETRI_TRANSITIONS=33} [2023-08-29 20:41:11,469 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 11 predicate places. [2023-08-29 20:41:11,469 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 33 transitions, 189 flow [2023-08-29 20:41:11,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.42857142857143) internal successors, (507), 7 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:11,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:41:11,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:41:11,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 20:41:11,470 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-29 20:41:11,471 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:41:11,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1091324276, now seen corresponding path program 1 times [2023-08-29 20:41:11,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:41:11,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789422882] [2023-08-29 20:41:11,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:41:11,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:41:11,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:41:11,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:41:11,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:41:11,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789422882] [2023-08-29 20:41:11,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789422882] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:41:11,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:41:11,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 20:41:11,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150139519] [2023-08-29 20:41:11,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:41:11,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 20:41:11,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:41:11,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 20:41:11,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 20:41:11,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 184 [2023-08-29 20:41:11,596 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 33 transitions, 189 flow. Second operand has 5 states, 5 states have (on average 81.0) internal successors, (405), 5 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:11,596 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:41:11,596 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 184 [2023-08-29 20:41:11,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:41:11,918 INFO L130 PetriNetUnfolder]: 1624/2804 cut-off events. [2023-08-29 20:41:11,919 INFO L131 PetriNetUnfolder]: For 2750/2750 co-relation queries the response was YES. [2023-08-29 20:41:11,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8473 conditions, 2804 events. 1624/2804 cut-off events. For 2750/2750 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 18411 event pairs, 235 based on Foata normal form. 182/2973 useless extension candidates. Maximal degree in co-relation 8463. Up to 1055 conditions per place. [2023-08-29 20:41:11,933 INFO L137 encePairwiseOnDemand]: 176/184 looper letters, 42 selfloop transitions, 8 changer transitions 29/80 dead transitions. [2023-08-29 20:41:11,933 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 80 transitions, 579 flow [2023-08-29 20:41:11,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 20:41:11,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 20:41:11,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 614 transitions. [2023-08-29 20:41:11,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4767080745341615 [2023-08-29 20:41:11,935 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 614 transitions. [2023-08-29 20:41:11,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 614 transitions. [2023-08-29 20:41:11,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:41:11,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 614 transitions. [2023-08-29 20:41:11,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.71428571428571) internal successors, (614), 7 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:11,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 184.0) internal successors, (1472), 8 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:11,940 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 184.0) internal successors, (1472), 8 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:11,940 INFO L175 Difference]: Start difference. First operand has 46 places, 33 transitions, 189 flow. Second operand 7 states and 614 transitions. [2023-08-29 20:41:11,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 80 transitions, 579 flow [2023-08-29 20:41:11,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 80 transitions, 569 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-29 20:41:11,945 INFO L231 Difference]: Finished difference. Result has 56 places, 33 transitions, 243 flow [2023-08-29 20:41:11,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=243, PETRI_PLACES=56, PETRI_TRANSITIONS=33} [2023-08-29 20:41:11,946 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 21 predicate places. [2023-08-29 20:41:11,946 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 33 transitions, 243 flow [2023-08-29 20:41:11,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 81.0) internal successors, (405), 5 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:11,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:41:11,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:41:11,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 20:41:11,947 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-29 20:41:11,948 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:41:11,948 INFO L85 PathProgramCache]: Analyzing trace with hash 166782826, now seen corresponding path program 1 times [2023-08-29 20:41:11,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:41:11,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703477530] [2023-08-29 20:41:11,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:41:11,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:41:11,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:41:12,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:41:12,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:41:12,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703477530] [2023-08-29 20:41:12,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703477530] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:41:12,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:41:12,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 20:41:12,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624062330] [2023-08-29 20:41:12,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:41:12,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 20:41:12,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:41:12,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 20:41:12,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 20:41:12,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 184 [2023-08-29 20:41:12,091 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 33 transitions, 243 flow. Second operand has 5 states, 5 states have (on average 81.2) internal successors, (406), 5 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:12,091 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:41:12,092 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 184 [2023-08-29 20:41:12,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:41:12,343 INFO L130 PetriNetUnfolder]: 1158/2061 cut-off events. [2023-08-29 20:41:12,343 INFO L131 PetriNetUnfolder]: For 6355/6355 co-relation queries the response was YES. [2023-08-29 20:41:12,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7217 conditions, 2061 events. 1158/2061 cut-off events. For 6355/6355 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 12767 event pairs, 258 based on Foata normal form. 122/2183 useless extension candidates. Maximal degree in co-relation 7202. Up to 789 conditions per place. [2023-08-29 20:41:12,357 INFO L137 encePairwiseOnDemand]: 176/184 looper letters, 40 selfloop transitions, 9 changer transitions 19/69 dead transitions. [2023-08-29 20:41:12,357 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 69 transitions, 593 flow [2023-08-29 20:41:12,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 20:41:12,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 20:41:12,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 606 transitions. [2023-08-29 20:41:12,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4704968944099379 [2023-08-29 20:41:12,360 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 606 transitions. [2023-08-29 20:41:12,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 606 transitions. [2023-08-29 20:41:12,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:41:12,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 606 transitions. [2023-08-29 20:41:12,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.57142857142857) internal successors, (606), 7 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:12,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 184.0) internal successors, (1472), 8 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:12,364 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 184.0) internal successors, (1472), 8 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:12,364 INFO L175 Difference]: Start difference. First operand has 56 places, 33 transitions, 243 flow. Second operand 7 states and 606 transitions. [2023-08-29 20:41:12,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 69 transitions, 593 flow [2023-08-29 20:41:12,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 69 transitions, 524 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-08-29 20:41:12,400 INFO L231 Difference]: Finished difference. Result has 59 places, 38 transitions, 305 flow [2023-08-29 20:41:12,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=305, PETRI_PLACES=59, PETRI_TRANSITIONS=38} [2023-08-29 20:41:12,403 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 24 predicate places. [2023-08-29 20:41:12,403 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 38 transitions, 305 flow [2023-08-29 20:41:12,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 81.2) internal successors, (406), 5 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:12,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:41:12,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:41:12,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 20:41:12,405 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-29 20:41:12,405 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:41:12,405 INFO L85 PathProgramCache]: Analyzing trace with hash -759677655, now seen corresponding path program 1 times [2023-08-29 20:41:12,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:41:12,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342469083] [2023-08-29 20:41:12,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:41:12,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:41:12,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:41:12,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:41:12,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:41:12,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342469083] [2023-08-29 20:41:12,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342469083] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:41:12,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:41:12,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 20:41:12,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832233781] [2023-08-29 20:41:12,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:41:12,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 20:41:12,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:41:12,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 20:41:12,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 20:41:12,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 184 [2023-08-29 20:41:12,562 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 38 transitions, 305 flow. Second operand has 5 states, 5 states have (on average 81.2) internal successors, (406), 5 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:12,562 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:41:12,562 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 184 [2023-08-29 20:41:12,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:41:12,822 INFO L130 PetriNetUnfolder]: 1000/1783 cut-off events. [2023-08-29 20:41:12,822 INFO L131 PetriNetUnfolder]: For 4830/4830 co-relation queries the response was YES. [2023-08-29 20:41:12,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6484 conditions, 1783 events. 1000/1783 cut-off events. For 4830/4830 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 10875 event pairs, 221 based on Foata normal form. 96/1875 useless extension candidates. Maximal degree in co-relation 6465. Up to 747 conditions per place. [2023-08-29 20:41:12,835 INFO L137 encePairwiseOnDemand]: 176/184 looper letters, 44 selfloop transitions, 16 changer transitions 15/76 dead transitions. [2023-08-29 20:41:12,835 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 76 transitions, 666 flow [2023-08-29 20:41:12,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 20:41:12,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 20:41:12,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 607 transitions. [2023-08-29 20:41:12,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47127329192546585 [2023-08-29 20:41:12,838 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 607 transitions. [2023-08-29 20:41:12,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 607 transitions. [2023-08-29 20:41:12,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:41:12,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 607 transitions. [2023-08-29 20:41:12,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.71428571428571) internal successors, (607), 7 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:12,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 184.0) internal successors, (1472), 8 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:12,843 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 184.0) internal successors, (1472), 8 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:12,843 INFO L175 Difference]: Start difference. First operand has 59 places, 38 transitions, 305 flow. Second operand 7 states and 607 transitions. [2023-08-29 20:41:12,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 76 transitions, 666 flow [2023-08-29 20:41:12,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 76 transitions, 636 flow, removed 12 selfloop flow, removed 6 redundant places. [2023-08-29 20:41:12,867 INFO L231 Difference]: Finished difference. Result has 62 places, 41 transitions, 398 flow [2023-08-29 20:41:12,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=398, PETRI_PLACES=62, PETRI_TRANSITIONS=41} [2023-08-29 20:41:12,867 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 27 predicate places. [2023-08-29 20:41:12,868 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 41 transitions, 398 flow [2023-08-29 20:41:12,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 81.2) internal successors, (406), 5 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:12,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:41:12,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:41:12,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 20:41:12,869 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-29 20:41:12,869 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:41:12,869 INFO L85 PathProgramCache]: Analyzing trace with hash 875269665, now seen corresponding path program 1 times [2023-08-29 20:41:12,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:41:12,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797673266] [2023-08-29 20:41:12,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:41:12,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:41:12,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:41:12,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:41:12,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:41:12,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797673266] [2023-08-29 20:41:12,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797673266] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:41:12,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:41:12,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 20:41:12,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804096062] [2023-08-29 20:41:12,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:41:12,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 20:41:12,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:41:12,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 20:41:12,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 20:41:13,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 184 [2023-08-29 20:41:13,006 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 41 transitions, 398 flow. Second operand has 4 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:13,006 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:41:13,007 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 184 [2023-08-29 20:41:13,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:41:13,189 INFO L130 PetriNetUnfolder]: 705/1332 cut-off events. [2023-08-29 20:41:13,189 INFO L131 PetriNetUnfolder]: For 4029/4125 co-relation queries the response was YES. [2023-08-29 20:41:13,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5168 conditions, 1332 events. 705/1332 cut-off events. For 4029/4125 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 8208 event pairs, 440 based on Foata normal form. 41/1362 useless extension candidates. Maximal degree in co-relation 5148. Up to 1015 conditions per place. [2023-08-29 20:41:13,200 INFO L137 encePairwiseOnDemand]: 180/184 looper letters, 31 selfloop transitions, 9 changer transitions 7/58 dead transitions. [2023-08-29 20:41:13,200 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 58 transitions, 595 flow [2023-08-29 20:41:13,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 20:41:13,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 20:41:13,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 463 transitions. [2023-08-29 20:41:13,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5032608695652174 [2023-08-29 20:41:13,202 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 463 transitions. [2023-08-29 20:41:13,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 463 transitions. [2023-08-29 20:41:13,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:41:13,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 463 transitions. [2023-08-29 20:41:13,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 92.6) internal successors, (463), 5 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:13,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:13,206 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:13,206 INFO L175 Difference]: Start difference. First operand has 62 places, 41 transitions, 398 flow. Second operand 5 states and 463 transitions. [2023-08-29 20:41:13,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 58 transitions, 595 flow [2023-08-29 20:41:13,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 58 transitions, 573 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-08-29 20:41:13,228 INFO L231 Difference]: Finished difference. Result has 62 places, 41 transitions, 413 flow [2023-08-29 20:41:13,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=413, PETRI_PLACES=62, PETRI_TRANSITIONS=41} [2023-08-29 20:41:13,229 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 27 predicate places. [2023-08-29 20:41:13,229 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 41 transitions, 413 flow [2023-08-29 20:41:13,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:13,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:41:13,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:41:13,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 20:41:13,230 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-29 20:41:13,231 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:41:13,231 INFO L85 PathProgramCache]: Analyzing trace with hash 867211218, now seen corresponding path program 1 times [2023-08-29 20:41:13,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:41:13,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56919716] [2023-08-29 20:41:13,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:41:13,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:41:13,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:41:13,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:41:13,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:41:13,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56919716] [2023-08-29 20:41:13,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56919716] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:41:13,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:41:13,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 20:41:13,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316092871] [2023-08-29 20:41:13,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:41:13,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 20:41:13,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:41:13,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 20:41:13,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 20:41:13,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 184 [2023-08-29 20:41:13,347 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 41 transitions, 413 flow. Second operand has 5 states, 5 states have (on average 86.4) internal successors, (432), 5 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:13,348 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:41:13,348 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 184 [2023-08-29 20:41:13,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:41:13,539 INFO L130 PetriNetUnfolder]: 910/1633 cut-off events. [2023-08-29 20:41:13,540 INFO L131 PetriNetUnfolder]: For 5528/5600 co-relation queries the response was YES. [2023-08-29 20:41:13,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6027 conditions, 1633 events. 910/1633 cut-off events. For 5528/5600 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 9642 event pairs, 267 based on Foata normal form. 89/1705 useless extension candidates. Maximal degree in co-relation 6006. Up to 566 conditions per place. [2023-08-29 20:41:13,549 INFO L137 encePairwiseOnDemand]: 179/184 looper letters, 24 selfloop transitions, 4 changer transitions 27/62 dead transitions. [2023-08-29 20:41:13,549 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 62 transitions, 639 flow [2023-08-29 20:41:13,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 20:41:13,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 20:41:13,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 540 transitions. [2023-08-29 20:41:13,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891304347826087 [2023-08-29 20:41:13,551 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 540 transitions. [2023-08-29 20:41:13,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 540 transitions. [2023-08-29 20:41:13,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:41:13,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 540 transitions. [2023-08-29 20:41:13,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.0) internal successors, (540), 6 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:13,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 184.0) internal successors, (1288), 7 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:13,555 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 184.0) internal successors, (1288), 7 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:13,555 INFO L175 Difference]: Start difference. First operand has 62 places, 41 transitions, 413 flow. Second operand 6 states and 540 transitions. [2023-08-29 20:41:13,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 62 transitions, 639 flow [2023-08-29 20:41:13,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 62 transitions, 609 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-08-29 20:41:13,568 INFO L231 Difference]: Finished difference. Result has 64 places, 27 transitions, 254 flow [2023-08-29 20:41:13,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=254, PETRI_PLACES=64, PETRI_TRANSITIONS=27} [2023-08-29 20:41:13,569 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 29 predicate places. [2023-08-29 20:41:13,569 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 27 transitions, 254 flow [2023-08-29 20:41:13,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.4) internal successors, (432), 5 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:13,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:41:13,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:41:13,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 20:41:13,570 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-29 20:41:13,570 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:41:13,570 INFO L85 PathProgramCache]: Analyzing trace with hash 435404354, now seen corresponding path program 1 times [2023-08-29 20:41:13,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:41:13,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235875094] [2023-08-29 20:41:13,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:41:13,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:41:13,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:41:13,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:41:13,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:41:13,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235875094] [2023-08-29 20:41:13,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235875094] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:41:13,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:41:13,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 20:41:13,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74850480] [2023-08-29 20:41:13,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:41:13,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 20:41:13,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:41:13,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 20:41:13,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 20:41:13,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 184 [2023-08-29 20:41:13,687 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 27 transitions, 254 flow. Second operand has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:13,688 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:41:13,688 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 184 [2023-08-29 20:41:13,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:41:13,732 INFO L130 PetriNetUnfolder]: 98/207 cut-off events. [2023-08-29 20:41:13,733 INFO L131 PetriNetUnfolder]: For 817/820 co-relation queries the response was YES. [2023-08-29 20:41:13,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 827 conditions, 207 events. 98/207 cut-off events. For 817/820 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 764 event pairs, 33 based on Foata normal form. 11/215 useless extension candidates. Maximal degree in co-relation 805. Up to 170 conditions per place. [2023-08-29 20:41:13,735 INFO L137 encePairwiseOnDemand]: 179/184 looper letters, 25 selfloop transitions, 4 changer transitions 0/37 dead transitions. [2023-08-29 20:41:13,735 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 37 transitions, 390 flow [2023-08-29 20:41:13,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 20:41:13,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 20:41:13,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 279 transitions. [2023-08-29 20:41:13,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054347826086957 [2023-08-29 20:41:13,737 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 279 transitions. [2023-08-29 20:41:13,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 279 transitions. [2023-08-29 20:41:13,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:41:13,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 279 transitions. [2023-08-29 20:41:13,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:13,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:13,739 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:13,739 INFO L175 Difference]: Start difference. First operand has 64 places, 27 transitions, 254 flow. Second operand 3 states and 279 transitions. [2023-08-29 20:41:13,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 37 transitions, 390 flow [2023-08-29 20:41:13,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 37 transitions, 314 flow, removed 10 selfloop flow, removed 16 redundant places. [2023-08-29 20:41:13,743 INFO L231 Difference]: Finished difference. Result has 47 places, 30 transitions, 224 flow [2023-08-29 20:41:13,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=47, PETRI_TRANSITIONS=30} [2023-08-29 20:41:13,743 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 12 predicate places. [2023-08-29 20:41:13,743 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 30 transitions, 224 flow [2023-08-29 20:41:13,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:13,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:41:13,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:41:13,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-29 20:41:13,744 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-29 20:41:13,745 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:41:13,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1540670685, now seen corresponding path program 1 times [2023-08-29 20:41:13,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:41:13,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536644750] [2023-08-29 20:41:13,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:41:13,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:41:13,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:41:13,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:41:13,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:41:13,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536644750] [2023-08-29 20:41:13,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536644750] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:41:13,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:41:13,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 20:41:13,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799085524] [2023-08-29 20:41:13,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:41:13,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 20:41:13,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:41:13,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 20:41:13,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-29 20:41:13,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 184 [2023-08-29 20:41:13,862 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 30 transitions, 224 flow. Second operand has 4 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:13,862 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:41:13,862 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 184 [2023-08-29 20:41:13,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:41:13,900 INFO L130 PetriNetUnfolder]: 50/127 cut-off events. [2023-08-29 20:41:13,900 INFO L131 PetriNetUnfolder]: For 288/301 co-relation queries the response was YES. [2023-08-29 20:41:13,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 537 conditions, 127 events. 50/127 cut-off events. For 288/301 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 415 event pairs, 7 based on Foata normal form. 22/146 useless extension candidates. Maximal degree in co-relation 522. Up to 65 conditions per place. [2023-08-29 20:41:13,902 INFO L137 encePairwiseOnDemand]: 179/184 looper letters, 27 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2023-08-29 20:41:13,902 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 42 transitions, 370 flow [2023-08-29 20:41:13,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 20:41:13,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 20:41:13,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 369 transitions. [2023-08-29 20:41:13,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.501358695652174 [2023-08-29 20:41:13,904 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 369 transitions. [2023-08-29 20:41:13,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 369 transitions. [2023-08-29 20:41:13,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:41:13,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 369 transitions. [2023-08-29 20:41:13,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.25) internal successors, (369), 4 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:13,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 184.0) internal successors, (920), 5 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:13,907 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 184.0) internal successors, (920), 5 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:13,907 INFO L175 Difference]: Start difference. First operand has 47 places, 30 transitions, 224 flow. Second operand 4 states and 369 transitions. [2023-08-29 20:41:13,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 42 transitions, 370 flow [2023-08-29 20:41:13,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 42 transitions, 366 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 20:41:13,909 INFO L231 Difference]: Finished difference. Result has 50 places, 33 transitions, 260 flow [2023-08-29 20:41:13,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=260, PETRI_PLACES=50, PETRI_TRANSITIONS=33} [2023-08-29 20:41:13,910 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 15 predicate places. [2023-08-29 20:41:13,910 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 33 transitions, 260 flow [2023-08-29 20:41:13,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:13,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:41:13,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:41:13,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-29 20:41:13,911 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-29 20:41:13,911 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:41:13,911 INFO L85 PathProgramCache]: Analyzing trace with hash 515179515, now seen corresponding path program 1 times [2023-08-29 20:41:13,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:41:13,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755161597] [2023-08-29 20:41:13,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:41:13,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:41:13,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:41:14,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:41:14,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:41:14,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755161597] [2023-08-29 20:41:14,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755161597] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:41:14,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:41:14,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 20:41:14,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700232158] [2023-08-29 20:41:14,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:41:14,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 20:41:14,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:41:14,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 20:41:14,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-29 20:41:14,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 184 [2023-08-29 20:41:14,048 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 33 transitions, 260 flow. Second operand has 5 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:14,048 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:41:14,048 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 184 [2023-08-29 20:41:14,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:41:14,089 INFO L130 PetriNetUnfolder]: 35/93 cut-off events. [2023-08-29 20:41:14,089 INFO L131 PetriNetUnfolder]: For 326/351 co-relation queries the response was YES. [2023-08-29 20:41:14,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 462 conditions, 93 events. 35/93 cut-off events. For 326/351 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 276 event pairs, 2 based on Foata normal form. 20/110 useless extension candidates. Maximal degree in co-relation 446. Up to 43 conditions per place. [2023-08-29 20:41:14,090 INFO L137 encePairwiseOnDemand]: 179/184 looper letters, 19 selfloop transitions, 10 changer transitions 7/42 dead transitions. [2023-08-29 20:41:14,090 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 42 transitions, 394 flow [2023-08-29 20:41:14,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 20:41:14,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 20:41:14,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 454 transitions. [2023-08-29 20:41:14,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4934782608695652 [2023-08-29 20:41:14,092 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 454 transitions. [2023-08-29 20:41:14,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 454 transitions. [2023-08-29 20:41:14,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:41:14,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 454 transitions. [2023-08-29 20:41:14,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.8) internal successors, (454), 5 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:14,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:14,096 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:14,096 INFO L175 Difference]: Start difference. First operand has 50 places, 33 transitions, 260 flow. Second operand 5 states and 454 transitions. [2023-08-29 20:41:14,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 42 transitions, 394 flow [2023-08-29 20:41:14,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 42 transitions, 354 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-08-29 20:41:14,098 INFO L231 Difference]: Finished difference. Result has 50 places, 30 transitions, 231 flow [2023-08-29 20:41:14,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=231, PETRI_PLACES=50, PETRI_TRANSITIONS=30} [2023-08-29 20:41:14,099 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 15 predicate places. [2023-08-29 20:41:14,099 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 30 transitions, 231 flow [2023-08-29 20:41:14,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:14,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:41:14,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:41:14,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-29 20:41:14,100 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-29 20:41:14,100 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:41:14,101 INFO L85 PathProgramCache]: Analyzing trace with hash -396939856, now seen corresponding path program 1 times [2023-08-29 20:41:14,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:41:14,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533983650] [2023-08-29 20:41:14,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:41:14,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:41:14,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:41:14,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:41:14,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:41:14,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533983650] [2023-08-29 20:41:14,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533983650] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:41:14,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:41:14,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 20:41:14,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678686507] [2023-08-29 20:41:14,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:41:14,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 20:41:14,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:41:14,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 20:41:14,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-29 20:41:14,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 184 [2023-08-29 20:41:14,250 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 30 transitions, 231 flow. Second operand has 6 states, 6 states have (on average 81.83333333333333) internal successors, (491), 6 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:14,250 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:41:14,250 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 184 [2023-08-29 20:41:14,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:41:14,313 INFO L130 PetriNetUnfolder]: 47/119 cut-off events. [2023-08-29 20:41:14,313 INFO L131 PetriNetUnfolder]: For 396/398 co-relation queries the response was YES. [2023-08-29 20:41:14,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 614 conditions, 119 events. 47/119 cut-off events. For 396/398 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 396 event pairs, 4 based on Foata normal form. 3/122 useless extension candidates. Maximal degree in co-relation 600. Up to 69 conditions per place. [2023-08-29 20:41:14,314 INFO L137 encePairwiseOnDemand]: 177/184 looper letters, 24 selfloop transitions, 5 changer transitions 25/55 dead transitions. [2023-08-29 20:41:14,314 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 55 transitions, 526 flow [2023-08-29 20:41:14,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 20:41:14,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 20:41:14,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 509 transitions. [2023-08-29 20:41:14,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46105072463768115 [2023-08-29 20:41:14,317 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 509 transitions. [2023-08-29 20:41:14,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 509 transitions. [2023-08-29 20:41:14,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:41:14,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 509 transitions. [2023-08-29 20:41:14,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 84.83333333333333) internal successors, (509), 6 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:14,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 184.0) internal successors, (1288), 7 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:14,321 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 184.0) internal successors, (1288), 7 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:14,321 INFO L175 Difference]: Start difference. First operand has 50 places, 30 transitions, 231 flow. Second operand 6 states and 509 transitions. [2023-08-29 20:41:14,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 55 transitions, 526 flow [2023-08-29 20:41:14,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 55 transitions, 438 flow, removed 16 selfloop flow, removed 6 redundant places. [2023-08-29 20:41:14,325 INFO L231 Difference]: Finished difference. Result has 51 places, 24 transitions, 146 flow [2023-08-29 20:41:14,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=146, PETRI_PLACES=51, PETRI_TRANSITIONS=24} [2023-08-29 20:41:14,326 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 16 predicate places. [2023-08-29 20:41:14,326 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 24 transitions, 146 flow [2023-08-29 20:41:14,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 81.83333333333333) internal successors, (491), 6 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:14,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:41:14,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:41:14,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-29 20:41:14,327 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-29 20:41:14,327 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:41:14,327 INFO L85 PathProgramCache]: Analyzing trace with hash 681812138, now seen corresponding path program 2 times [2023-08-29 20:41:14,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:41:14,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511345237] [2023-08-29 20:41:14,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:41:14,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:41:14,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:41:14,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:41:14,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:41:14,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511345237] [2023-08-29 20:41:14,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511345237] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:41:14,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:41:14,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 20:41:14,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813466877] [2023-08-29 20:41:14,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:41:14,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 20:41:14,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:41:14,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 20:41:14,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-29 20:41:14,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 184 [2023-08-29 20:41:14,475 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 24 transitions, 146 flow. Second operand has 6 states, 6 states have (on average 81.83333333333333) internal successors, (491), 6 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:14,475 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:41:14,475 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 184 [2023-08-29 20:41:14,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:41:14,523 INFO L130 PetriNetUnfolder]: 13/41 cut-off events. [2023-08-29 20:41:14,523 INFO L131 PetriNetUnfolder]: For 102/102 co-relation queries the response was YES. [2023-08-29 20:41:14,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 41 events. 13/41 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 52 event pairs, 1 based on Foata normal form. 1/42 useless extension candidates. Maximal degree in co-relation 182. Up to 17 conditions per place. [2023-08-29 20:41:14,523 INFO L137 encePairwiseOnDemand]: 178/184 looper letters, 0 selfloop transitions, 0 changer transitions 30/30 dead transitions. [2023-08-29 20:41:14,524 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 30 transitions, 237 flow [2023-08-29 20:41:14,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 20:41:14,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 20:41:14,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 575 transitions. [2023-08-29 20:41:14,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2023-08-29 20:41:14,526 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 575 transitions. [2023-08-29 20:41:14,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 575 transitions. [2023-08-29 20:41:14,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:41:14,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 575 transitions. [2023-08-29 20:41:14,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 82.14285714285714) internal successors, (575), 7 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:14,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 184.0) internal successors, (1472), 8 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:14,530 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 184.0) internal successors, (1472), 8 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:14,530 INFO L175 Difference]: Start difference. First operand has 51 places, 24 transitions, 146 flow. Second operand 7 states and 575 transitions. [2023-08-29 20:41:14,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 30 transitions, 237 flow [2023-08-29 20:41:14,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 30 transitions, 189 flow, removed 3 selfloop flow, removed 14 redundant places. [2023-08-29 20:41:14,532 INFO L231 Difference]: Finished difference. Result has 41 places, 0 transitions, 0 flow [2023-08-29 20:41:14,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=41, PETRI_TRANSITIONS=0} [2023-08-29 20:41:14,532 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 6 predicate places. [2023-08-29 20:41:14,533 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 0 transitions, 0 flow [2023-08-29 20:41:14,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 81.83333333333333) internal successors, (491), 6 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:41:14,535 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 11 remaining) [2023-08-29 20:41:14,535 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 11 remaining) [2023-08-29 20:41:14,536 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2023-08-29 20:41:14,536 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 11 remaining) [2023-08-29 20:41:14,536 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 11 remaining) [2023-08-29 20:41:14,536 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2023-08-29 20:41:14,536 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (4 of 11 remaining) [2023-08-29 20:41:14,536 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (3 of 11 remaining) [2023-08-29 20:41:14,537 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 11 remaining) [2023-08-29 20:41:14,537 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 11 remaining) [2023-08-29 20:41:14,537 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 11 remaining) [2023-08-29 20:41:14,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-29 20:41:14,537 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:41:14,540 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 20:41:14,540 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 20:41:14,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 08:41:14 BasicIcfg [2023-08-29 20:41:14,543 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 20:41:14,543 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 20:41:14,543 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 20:41:14,543 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 20:41:14,544 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:41:05" (3/4) ... [2023-08-29 20:41:14,546 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-29 20:41:14,551 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-08-29 20:41:14,551 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-08-29 20:41:14,551 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-08-29 20:41:14,558 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2023-08-29 20:41:14,559 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-29 20:41:14,559 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-29 20:41:14,559 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-29 20:41:14,590 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-29 20:41:14,590 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 20:41:14,591 INFO L158 Benchmark]: Toolchain (without parser) took 9611.20ms. Allocated memory was 94.4MB in the beginning and 297.8MB in the end (delta: 203.4MB). Free memory was 70.9MB in the beginning and 140.3MB in the end (delta: -69.3MB). Peak memory consumption was 135.6MB. Max. memory is 16.1GB. [2023-08-29 20:41:14,591 INFO L158 Benchmark]: CDTParser took 0.70ms. Allocated memory is still 65.0MB. Free memory was 42.9MB in the beginning and 42.8MB in the end (delta: 49.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 20:41:14,591 INFO L158 Benchmark]: CACSL2BoogieTranslator took 506.85ms. Allocated memory is still 94.4MB. Free memory was 70.6MB in the beginning and 50.6MB in the end (delta: 20.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-08-29 20:41:14,591 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.95ms. Allocated memory is still 94.4MB. Free memory was 50.6MB in the beginning and 48.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 20:41:14,592 INFO L158 Benchmark]: Boogie Preprocessor took 63.57ms. Allocated memory is still 94.4MB. Free memory was 48.5MB in the beginning and 74.4MB in the end (delta: -25.9MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. [2023-08-29 20:41:14,592 INFO L158 Benchmark]: RCFGBuilder took 355.88ms. Allocated memory is still 94.4MB. Free memory was 74.4MB in the beginning and 60.2MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-08-29 20:41:14,592 INFO L158 Benchmark]: TraceAbstraction took 8573.90ms. Allocated memory was 94.4MB in the beginning and 297.8MB in the end (delta: 203.4MB). Free memory was 59.2MB in the beginning and 143.4MB in the end (delta: -84.2MB). Peak memory consumption was 121.2MB. Max. memory is 16.1GB. [2023-08-29 20:41:14,592 INFO L158 Benchmark]: Witness Printer took 47.15ms. Allocated memory is still 297.8MB. Free memory was 143.4MB in the beginning and 140.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 20:41:14,594 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.70ms. Allocated memory is still 65.0MB. Free memory was 42.9MB in the beginning and 42.8MB in the end (delta: 49.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 506.85ms. Allocated memory is still 94.4MB. Free memory was 70.6MB in the beginning and 50.6MB in the end (delta: 20.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.95ms. Allocated memory is still 94.4MB. Free memory was 50.6MB in the beginning and 48.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.57ms. Allocated memory is still 94.4MB. Free memory was 48.5MB in the beginning and 74.4MB in the end (delta: -25.9MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. * RCFGBuilder took 355.88ms. Allocated memory is still 94.4MB. Free memory was 74.4MB in the beginning and 60.2MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 8573.90ms. Allocated memory was 94.4MB in the beginning and 297.8MB in the end (delta: 203.4MB). Free memory was 59.2MB in the beginning and 143.4MB in the end (delta: -84.2MB). Peak memory consumption was 121.2MB. Max. memory is 16.1GB. * Witness Printer took 47.15ms. Allocated memory is still 297.8MB. Free memory was 143.4MB in the beginning and 140.3MB 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: 2.6s, 96 PlacesBefore, 35 PlacesAfterwards, 88 TransitionsBefore, 26 TransitionsAfterwards, 1512 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 53 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 89 TotalNumberOfCompositions, 3133 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1840, independent: 1747, independent conditional: 0, independent unconditional: 1747, dependent: 93, dependent conditional: 0, dependent unconditional: 93, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 847, independent: 821, independent conditional: 0, independent unconditional: 821, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1840, independent: 926, independent conditional: 0, independent unconditional: 926, dependent: 67, dependent conditional: 0, dependent unconditional: 67, unknown: 847, unknown conditional: 0, unknown unconditional: 847] , Statistics on independence cache: Total cache size (in pairs): 75, Positive cache size: 66, Positive conditional cache size: 0, Positive unconditional cache size: 66, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 776]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 118 locations, 11 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 8.5s, OverallIterations: 14, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 667 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 490 mSDsluCounter, 194 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 147 mSDsCounter, 77 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1552 IncrementalHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 77 mSolverCounterUnsat, 47 mSDtfsCounter, 1552 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=413occurred in iteration=8, InterpolantAutomatonStates: 77, 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, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 168 NumberOfCodeBlocks, 168 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 154 ConstructedInterpolants, 0 QuantifiedInterpolants, 1155 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-29 20:41:14,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE