./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe028_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 BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe028_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 10dd65d363f3d099295f575f6743961c3e6b480300728ce34fc95b90972dc72c --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 23:42:59,925 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 23:42:59,928 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 23:42:59,969 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 23:42:59,970 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 23:42:59,973 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 23:42:59,975 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 23:42:59,978 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 23:42:59,980 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 23:42:59,984 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 23:42:59,985 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 23:42:59,988 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 23:42:59,988 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 23:42:59,990 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 23:42:59,991 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 23:42:59,996 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 23:42:59,998 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 23:42:59,999 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 23:43:00,001 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 23:43:00,006 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 23:43:00,007 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 23:43:00,008 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 23:43:00,010 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 23:43:00,011 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 23:43:00,018 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 23:43:00,018 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 23:43:00,018 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 23:43:00,020 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 23:43:00,021 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 23:43:00,021 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 23:43:00,022 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 23:43:00,023 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 23:43:00,025 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 23:43:00,025 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 23:43:00,026 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 23:43:00,026 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 23:43:00,027 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 23:43:00,027 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 23:43:00,027 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 23:43:00,028 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 23:43:00,028 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 23:43:00,030 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-31 23:43:00,063 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 23:43:00,064 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 23:43:00,065 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 23:43:00,065 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 23:43:00,066 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 23:43:00,066 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 23:43:00,067 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 23:43:00,067 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 23:43:00,068 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 23:43:00,068 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 23:43:00,069 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 23:43:00,069 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 23:43:00,069 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 23:43:00,069 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 23:43:00,069 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 23:43:00,070 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-31 23:43:00,070 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-31 23:43:00,070 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-31 23:43:00,070 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 23:43:00,070 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-31 23:43:00,071 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 23:43:00,071 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 23:43:00,071 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 23:43:00,071 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 23:43:00,071 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 23:43:00,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:43:00,072 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 23:43:00,072 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 23:43:00,072 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 23:43:00,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 23:43:00,073 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 23:43:00,073 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 23:43:00,073 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 23:43:00,073 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 23:43:00,073 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10dd65d363f3d099295f575f6743961c3e6b480300728ce34fc95b90972dc72c Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 23:43:00,394 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 23:43:00,420 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 23:43:00,423 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 23:43:00,424 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 23:43:00,424 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 23:43:00,425 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-31 23:43:01,565 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 23:43:01,807 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 23:43:01,808 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-31 23:43:01,819 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d32459d2d/a1c8be38aa6e475691b76f0b22942afd/FLAG8f88e1559 [2023-08-31 23:43:01,834 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d32459d2d/a1c8be38aa6e475691b76f0b22942afd [2023-08-31 23:43:01,837 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 23:43:01,838 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 23:43:01,839 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 23:43:01,839 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 23:43:01,841 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 23:43:01,842 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:43:01" (1/1) ... [2023-08-31 23:43:01,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6342fa24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:43:01, skipping insertion in model container [2023-08-31 23:43:01,843 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:43:01" (1/1) ... [2023-08-31 23:43:01,848 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 23:43:01,890 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 23:43:02,063 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/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-08-31 23:43:02,251 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:43:02,263 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 23:43:02,279 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/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-08-31 23:43:02,324 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:43:02,359 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 23:43:02,359 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 23:43:02,365 INFO L208 MainTranslator]: Completed translation [2023-08-31 23:43:02,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:43:02 WrapperNode [2023-08-31 23:43:02,366 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 23:43:02,367 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 23:43:02,367 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 23:43:02,367 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 23:43:02,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:43:02" (1/1) ... [2023-08-31 23:43:02,403 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:43:02" (1/1) ... [2023-08-31 23:43:02,455 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2023-08-31 23:43:02,456 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 23:43:02,457 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 23:43:02,457 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 23:43:02,457 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 23:43:02,481 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:43:02" (1/1) ... [2023-08-31 23:43:02,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:43:02" (1/1) ... [2023-08-31 23:43:02,490 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:43:02" (1/1) ... [2023-08-31 23:43:02,500 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:43:02" (1/1) ... [2023-08-31 23:43:02,509 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:43:02" (1/1) ... [2023-08-31 23:43:02,511 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:43:02" (1/1) ... [2023-08-31 23:43:02,513 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:43:02" (1/1) ... [2023-08-31 23:43:02,518 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:43:02" (1/1) ... [2023-08-31 23:43:02,521 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 23:43:02,527 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 23:43:02,527 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 23:43:02,527 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 23:43:02,528 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:43:02" (1/1) ... [2023-08-31 23:43:02,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:43:02,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 23:43:02,570 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-31 23:43:02,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-31 23:43:02,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 23:43:02,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-31 23:43:02,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 23:43:02,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 23:43:02,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 23:43:02,616 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-31 23:43:02,616 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-31 23:43:02,616 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-31 23:43:02,616 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-31 23:43:02,616 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-31 23:43:02,616 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-31 23:43:02,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 23:43:02,617 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-31 23:43:02,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 23:43:02,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 23:43:02,618 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 23:43:02,776 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 23:43:02,778 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 23:43:03,006 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 23:43:03,012 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 23:43:03,017 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-31 23:43:03,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:43:03 BoogieIcfgContainer [2023-08-31 23:43:03,021 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 23:43:03,022 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 23:43:03,022 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 23:43:03,025 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 23:43:03,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 11:43:01" (1/3) ... [2023-08-31 23:43:03,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d5ea1c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:43:03, skipping insertion in model container [2023-08-31 23:43:03,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:43:02" (2/3) ... [2023-08-31 23:43:03,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d5ea1c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:43:03, skipping insertion in model container [2023-08-31 23:43:03,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:43:03" (3/3) ... [2023-08-31 23:43:03,028 INFO L112 eAbstractionObserver]: Analyzing ICFG safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-31 23:43:03,044 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 23:43:03,045 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-31 23:43:03,045 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 23:43:03,138 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:43:03,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 94 transitions, 203 flow [2023-08-31 23:43:03,242 INFO L130 PetriNetUnfolder]: 2/91 cut-off events. [2023-08-31 23:43:03,243 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:43:03,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 91 events. 2/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 68 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2023-08-31 23:43:03,247 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 94 transitions, 203 flow [2023-08-31 23:43:03,250 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 87 transitions, 183 flow [2023-08-31 23:43:03,254 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:43:03,262 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 87 transitions, 183 flow [2023-08-31 23:43:03,264 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 95 places, 87 transitions, 183 flow [2023-08-31 23:43:03,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 87 transitions, 183 flow [2023-08-31 23:43:03,280 INFO L130 PetriNetUnfolder]: 2/87 cut-off events. [2023-08-31 23:43:03,280 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:43:03,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 87 events. 2/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 67 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 66. Up to 2 conditions per place. [2023-08-31 23:43:03,282 INFO L119 LiptonReduction]: Number of co-enabled transitions 1416 [2023-08-31 23:43:05,775 INFO L134 LiptonReduction]: Checked pairs total: 2687 [2023-08-31 23:43:05,776 INFO L136 LiptonReduction]: Total number of compositions: 88 [2023-08-31 23:43:05,789 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 23:43:05,794 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;@56ea2780, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:43:05,795 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-08-31 23:43:05,796 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-31 23:43:05,796 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:43:05,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:43:05,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-31 23:43:05,797 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:43:05,801 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:43:05,802 INFO L85 PathProgramCache]: Analyzing trace with hash 335, now seen corresponding path program 1 times [2023-08-31 23:43:05,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:43:05,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882525464] [2023-08-31 23:43:05,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:43:05,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:43:05,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:43:05,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:43:05,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:43:05,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882525464] [2023-08-31 23:43:05,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882525464] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:43:05,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:43:05,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-31 23:43:05,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621951294] [2023-08-31 23:43:05,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:43:05,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-31 23:43:05,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:43:05,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-31 23:43:05,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-31 23:43:05,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 182 [2023-08-31 23:43:05,934 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 59 flow. Second operand has 2 states, 2 states have (on average 88.5) internal successors, (177), 2 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:43:05,934 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:43:05,934 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 182 [2023-08-31 23:43:05,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:43:06,044 INFO L130 PetriNetUnfolder]: 272/452 cut-off events. [2023-08-31 23:43:06,044 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-31 23:43:06,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 915 conditions, 452 events. 272/452 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 1865 event pairs, 272 based on Foata normal form. 0/415 useless extension candidates. Maximal degree in co-relation 904. Up to 433 conditions per place. [2023-08-31 23:43:06,051 INFO L137 encePairwiseOnDemand]: 175/182 looper letters, 16 selfloop transitions, 0 changer transitions 0/18 dead transitions. [2023-08-31 23:43:06,051 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 18 transitions, 77 flow [2023-08-31 23:43:06,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-31 23:43:06,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-31 23:43:06,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 199 transitions. [2023-08-31 23:43:06,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5467032967032966 [2023-08-31 23:43:06,064 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 199 transitions. [2023-08-31 23:43:06,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 199 transitions. [2023-08-31 23:43:06,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:43:06,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 199 transitions. [2023-08-31 23:43:06,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 99.5) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:43:06,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:43:06,077 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:43:06,079 INFO L175 Difference]: Start difference. First operand has 34 places, 25 transitions, 59 flow. Second operand 2 states and 199 transitions. [2023-08-31 23:43:06,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 18 transitions, 77 flow [2023-08-31 23:43:06,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 18 transitions, 74 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-31 23:43:06,083 INFO L231 Difference]: Finished difference. Result has 26 places, 18 transitions, 42 flow [2023-08-31 23:43:06,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=42, PETRI_PLACES=26, PETRI_TRANSITIONS=18} [2023-08-31 23:43:06,099 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -8 predicate places. [2023-08-31 23:43:06,099 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 42 flow [2023-08-31 23:43:06,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 88.5) internal successors, (177), 2 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:43:06,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:43:06,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:43:06,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 23:43:06,101 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:43:06,101 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:43:06,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1756077030, now seen corresponding path program 1 times [2023-08-31 23:43:06,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:43:06,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890295861] [2023-08-31 23:43:06,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:43:06,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:43:06,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:43:06,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:43:06,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:43:06,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890295861] [2023-08-31 23:43:06,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890295861] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:43:06,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:43:06,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 23:43:06,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292226641] [2023-08-31 23:43:06,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:43:06,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 23:43:06,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:43:06,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 23:43:06,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-31 23:43:06,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 182 [2023-08-31 23:43:06,986 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 18 transitions, 42 flow. Second operand has 6 states, 6 states have (on average 74.5) internal successors, (447), 6 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:43:06,986 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:43:06,986 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 182 [2023-08-31 23:43:06,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:43:07,109 INFO L130 PetriNetUnfolder]: 218/388 cut-off events. [2023-08-31 23:43:07,109 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:43:07,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 768 conditions, 388 events. 218/388 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1611 event pairs, 3 based on Foata normal form. 0/388 useless extension candidates. Maximal degree in co-relation 765. Up to 222 conditions per place. [2023-08-31 23:43:07,113 INFO L137 encePairwiseOnDemand]: 177/182 looper letters, 24 selfloop transitions, 4 changer transitions 0/30 dead transitions. [2023-08-31 23:43:07,113 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 30 transitions, 122 flow [2023-08-31 23:43:07,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 23:43:07,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 23:43:07,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 468 transitions. [2023-08-31 23:43:07,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2023-08-31 23:43:07,117 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 468 transitions. [2023-08-31 23:43:07,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 468 transitions. [2023-08-31 23:43:07,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:43:07,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 468 transitions. [2023-08-31 23:43:07,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 78.0) internal successors, (468), 6 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:43:07,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 182.0) internal successors, (1274), 7 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:43:07,122 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 182.0) internal successors, (1274), 7 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:43:07,123 INFO L175 Difference]: Start difference. First operand has 26 places, 18 transitions, 42 flow. Second operand 6 states and 468 transitions. [2023-08-31 23:43:07,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 30 transitions, 122 flow [2023-08-31 23:43:07,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 30 transitions, 122 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 23:43:07,124 INFO L231 Difference]: Finished difference. Result has 30 places, 17 transitions, 48 flow [2023-08-31 23:43:07,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=48, PETRI_PLACES=30, PETRI_TRANSITIONS=17} [2023-08-31 23:43:07,125 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -4 predicate places. [2023-08-31 23:43:07,125 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 17 transitions, 48 flow [2023-08-31 23:43:07,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 74.5) internal successors, (447), 6 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:43:07,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:43:07,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:43:07,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 23:43:07,126 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:43:07,126 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:43:07,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1756077003, now seen corresponding path program 1 times [2023-08-31 23:43:07,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:43:07,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858995578] [2023-08-31 23:43:07,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:43:07,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:43:07,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:43:07,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:43:07,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:43:07,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858995578] [2023-08-31 23:43:07,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858995578] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:43:07,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:43:07,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:43:07,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881616104] [2023-08-31 23:43:07,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:43:07,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:43:07,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:43:07,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:43:07,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:43:07,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 182 [2023-08-31 23:43:07,327 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 17 transitions, 48 flow. Second operand has 4 states, 4 states have (on average 87.25) internal successors, (349), 4 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:43:07,328 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:43:07,329 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 182 [2023-08-31 23:43:07,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:43:07,412 INFO L130 PetriNetUnfolder]: 212/383 cut-off events. [2023-08-31 23:43:07,412 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2023-08-31 23:43:07,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 807 conditions, 383 events. 212/383 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1643 event pairs, 62 based on Foata normal form. 27/409 useless extension candidates. Maximal degree in co-relation 803. Up to 205 conditions per place. [2023-08-31 23:43:07,416 INFO L137 encePairwiseOnDemand]: 178/182 looper letters, 18 selfloop transitions, 2 changer transitions 11/33 dead transitions. [2023-08-31 23:43:07,416 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 33 transitions, 144 flow [2023-08-31 23:43:07,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:43:07,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:43:07,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 458 transitions. [2023-08-31 23:43:07,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5032967032967033 [2023-08-31 23:43:07,418 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 458 transitions. [2023-08-31 23:43:07,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 458 transitions. [2023-08-31 23:43:07,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:43:07,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 458 transitions. [2023-08-31 23:43:07,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.6) internal successors, (458), 5 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:43:07,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 182.0) internal successors, (1092), 6 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:43:07,424 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 182.0) internal successors, (1092), 6 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:43:07,424 INFO L175 Difference]: Start difference. First operand has 30 places, 17 transitions, 48 flow. Second operand 5 states and 458 transitions. [2023-08-31 23:43:07,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 33 transitions, 144 flow [2023-08-31 23:43:07,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 33 transitions, 136 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-31 23:43:07,426 INFO L231 Difference]: Finished difference. Result has 33 places, 17 transitions, 53 flow [2023-08-31 23:43:07,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=41, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=53, PETRI_PLACES=33, PETRI_TRANSITIONS=17} [2023-08-31 23:43:07,427 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -1 predicate places. [2023-08-31 23:43:07,430 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 17 transitions, 53 flow [2023-08-31 23:43:07,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.25) internal successors, (349), 4 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:43:07,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:43:07,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:43:07,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 23:43:07,431 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:43:07,432 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:43:07,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1396202113, now seen corresponding path program 1 times [2023-08-31 23:43:07,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:43:07,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979937771] [2023-08-31 23:43:07,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:43:07,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:43:07,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:43:07,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:43:07,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:43:07,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979937771] [2023-08-31 23:43:07,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979937771] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:43:07,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:43:07,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:43:07,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214101701] [2023-08-31 23:43:07,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:43:07,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:43:07,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:43:07,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:43:07,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:43:07,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 182 [2023-08-31 23:43:07,621 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 17 transitions, 53 flow. Second operand has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:43:07,621 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:43:07,621 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 182 [2023-08-31 23:43:07,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:43:07,715 INFO L130 PetriNetUnfolder]: 211/376 cut-off events. [2023-08-31 23:43:07,715 INFO L131 PetriNetUnfolder]: For 66/66 co-relation queries the response was YES. [2023-08-31 23:43:07,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 874 conditions, 376 events. 211/376 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1702 event pairs, 36 based on Foata normal form. 18/393 useless extension candidates. Maximal degree in co-relation 867. Up to 129 conditions per place. [2023-08-31 23:43:07,717 INFO L137 encePairwiseOnDemand]: 177/182 looper letters, 21 selfloop transitions, 3 changer transitions 13/39 dead transitions. [2023-08-31 23:43:07,717 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 39 transitions, 181 flow [2023-08-31 23:43:07,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 23:43:07,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 23:43:07,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 537 transitions. [2023-08-31 23:43:07,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49175824175824173 [2023-08-31 23:43:07,720 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 537 transitions. [2023-08-31 23:43:07,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 537 transitions. [2023-08-31 23:43:07,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:43:07,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 537 transitions. [2023-08-31 23:43:07,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 89.5) internal successors, (537), 6 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:43:07,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 182.0) internal successors, (1274), 7 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:43:07,724 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 182.0) internal successors, (1274), 7 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:43:07,724 INFO L175 Difference]: Start difference. First operand has 33 places, 17 transitions, 53 flow. Second operand 6 states and 537 transitions. [2023-08-31 23:43:07,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 39 transitions, 181 flow [2023-08-31 23:43:07,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 39 transitions, 171 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-31 23:43:07,728 INFO L231 Difference]: Finished difference. Result has 36 places, 17 transitions, 63 flow [2023-08-31 23:43:07,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=45, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=63, PETRI_PLACES=36, PETRI_TRANSITIONS=17} [2023-08-31 23:43:07,728 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2023-08-31 23:43:07,729 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 17 transitions, 63 flow [2023-08-31 23:43:07,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:43:07,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:43:07,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:43:07,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 23:43:07,730 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:43:07,730 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:43:07,730 INFO L85 PathProgramCache]: Analyzing trace with hash -332994184, now seen corresponding path program 1 times [2023-08-31 23:43:07,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:43:07,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626621010] [2023-08-31 23:43:07,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:43:07,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:43:07,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:43:07,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:43:07,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:43:07,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626621010] [2023-08-31 23:43:07,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626621010] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:43:07,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:43:07,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:43:07,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147146361] [2023-08-31 23:43:07,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:43:07,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:43:07,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:43:07,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:43:07,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:43:07,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 182 [2023-08-31 23:43:07,877 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 17 transitions, 63 flow. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:43:07,877 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:43:07,877 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 182 [2023-08-31 23:43:07,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:43:07,921 INFO L130 PetriNetUnfolder]: 96/181 cut-off events. [2023-08-31 23:43:07,922 INFO L131 PetriNetUnfolder]: For 86/86 co-relation queries the response was YES. [2023-08-31 23:43:07,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 504 conditions, 181 events. 96/181 cut-off events. For 86/86 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 571 event pairs, 32 based on Foata normal form. 6/186 useless extension candidates. Maximal degree in co-relation 495. Up to 147 conditions per place. [2023-08-31 23:43:07,923 INFO L137 encePairwiseOnDemand]: 177/182 looper letters, 21 selfloop transitions, 4 changer transitions 0/27 dead transitions. [2023-08-31 23:43:07,923 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 27 transitions, 146 flow [2023-08-31 23:43:07,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:43:07,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:43:07,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 278 transitions. [2023-08-31 23:43:07,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5091575091575091 [2023-08-31 23:43:07,925 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 278 transitions. [2023-08-31 23:43:07,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 278 transitions. [2023-08-31 23:43:07,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:43:07,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 278 transitions. [2023-08-31 23:43:07,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:43:07,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:43:07,929 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:43:07,929 INFO L175 Difference]: Start difference. First operand has 36 places, 17 transitions, 63 flow. Second operand 3 states and 278 transitions. [2023-08-31 23:43:07,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 27 transitions, 146 flow [2023-08-31 23:43:07,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 27 transitions, 125 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-08-31 23:43:07,933 INFO L231 Difference]: Finished difference. Result has 31 places, 20 transitions, 73 flow [2023-08-31 23:43:07,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=47, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=31, PETRI_TRANSITIONS=20} [2023-08-31 23:43:07,935 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -3 predicate places. [2023-08-31 23:43:07,935 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 20 transitions, 73 flow [2023-08-31 23:43:07,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:43:07,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:43:07,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:43:07,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 23:43:07,937 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:43:07,937 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:43:07,937 INFO L85 PathProgramCache]: Analyzing trace with hash -463200432, now seen corresponding path program 1 times [2023-08-31 23:43:07,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:43:07,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381958077] [2023-08-31 23:43:07,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:43:07,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:43:07,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:43:08,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:43:08,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:43:08,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381958077] [2023-08-31 23:43:08,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381958077] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:43:08,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:43:08,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:43:08,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986581453] [2023-08-31 23:43:08,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:43:08,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:43:08,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:43:08,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:43:08,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:43:08,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 182 [2023-08-31 23:43:08,104 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 20 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:43:08,104 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:43:08,104 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 182 [2023-08-31 23:43:08,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:43:08,147 INFO L130 PetriNetUnfolder]: 59/125 cut-off events. [2023-08-31 23:43:08,147 INFO L131 PetriNetUnfolder]: For 29/33 co-relation queries the response was YES. [2023-08-31 23:43:08,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 377 conditions, 125 events. 59/125 cut-off events. For 29/33 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 350 event pairs, 15 based on Foata normal form. 13/137 useless extension candidates. Maximal degree in co-relation 371. Up to 52 conditions per place. [2023-08-31 23:43:08,148 INFO L137 encePairwiseOnDemand]: 177/182 looper letters, 25 selfloop transitions, 7 changer transitions 0/34 dead transitions. [2023-08-31 23:43:08,149 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 34 transitions, 184 flow [2023-08-31 23:43:08,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 23:43:08,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 23:43:08,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 369 transitions. [2023-08-31 23:43:08,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5068681318681318 [2023-08-31 23:43:08,150 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 369 transitions. [2023-08-31 23:43:08,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 369 transitions. [2023-08-31 23:43:08,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:43:08,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 369 transitions. [2023-08-31 23:43:08,152 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) [2023-08-31 23:43:08,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 182.0) internal successors, (910), 5 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:43:08,153 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 182.0) internal successors, (910), 5 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:43:08,153 INFO L175 Difference]: Start difference. First operand has 31 places, 20 transitions, 73 flow. Second operand 4 states and 369 transitions. [2023-08-31 23:43:08,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 34 transitions, 184 flow [2023-08-31 23:43:08,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 34 transitions, 180 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 23:43:08,154 INFO L231 Difference]: Finished difference. Result has 34 places, 23 transitions, 109 flow [2023-08-31 23:43:08,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=109, PETRI_PLACES=34, PETRI_TRANSITIONS=23} [2023-08-31 23:43:08,155 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2023-08-31 23:43:08,155 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 23 transitions, 109 flow [2023-08-31 23:43:08,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:43:08,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:43:08,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:43:08,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 23:43:08,156 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:43:08,156 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:43:08,156 INFO L85 PathProgramCache]: Analyzing trace with hash -109984675, now seen corresponding path program 1 times [2023-08-31 23:43:08,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:43:08,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988242526] [2023-08-31 23:43:08,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:43:08,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:43:08,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:43:08,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:43:08,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:43:08,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988242526] [2023-08-31 23:43:08,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988242526] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:43:08,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:43:08,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 23:43:08,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625861118] [2023-08-31 23:43:08,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:43:08,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:43:08,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:43:08,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:43:08,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:43:08,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 182 [2023-08-31 23:43:08,438 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 23 transitions, 109 flow. Second operand has 5 states, 5 states have (on average 86.6) internal successors, (433), 5 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:43:08,438 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:43:08,438 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 182 [2023-08-31 23:43:08,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:43:08,486 INFO L130 PetriNetUnfolder]: 46/99 cut-off events. [2023-08-31 23:43:08,487 INFO L131 PetriNetUnfolder]: For 114/122 co-relation queries the response was YES. [2023-08-31 23:43:08,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339 conditions, 99 events. 46/99 cut-off events. For 114/122 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 265 event pairs, 12 based on Foata normal form. 13/111 useless extension candidates. Maximal degree in co-relation 332. Up to 40 conditions per place. [2023-08-31 23:43:08,488 INFO L137 encePairwiseOnDemand]: 177/182 looper letters, 22 selfloop transitions, 10 changer transitions 0/34 dead transitions. [2023-08-31 23:43:08,488 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 34 transitions, 208 flow [2023-08-31 23:43:08,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:43:08,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:43:08,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 453 transitions. [2023-08-31 23:43:08,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4978021978021978 [2023-08-31 23:43:08,490 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 453 transitions. [2023-08-31 23:43:08,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 453 transitions. [2023-08-31 23:43:08,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:43:08,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 453 transitions. [2023-08-31 23:43:08,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.6) internal successors, (453), 5 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:43:08,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 182.0) internal successors, (1092), 6 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:43:08,493 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 182.0) internal successors, (1092), 6 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:43:08,493 INFO L175 Difference]: Start difference. First operand has 34 places, 23 transitions, 109 flow. Second operand 5 states and 453 transitions. [2023-08-31 23:43:08,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 34 transitions, 208 flow [2023-08-31 23:43:08,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 34 transitions, 188 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-31 23:43:08,495 INFO L231 Difference]: Finished difference. Result has 36 places, 23 transitions, 119 flow [2023-08-31 23:43:08,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=119, PETRI_PLACES=36, PETRI_TRANSITIONS=23} [2023-08-31 23:43:08,496 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2023-08-31 23:43:08,496 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 23 transitions, 119 flow [2023-08-31 23:43:08,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.6) internal successors, (433), 5 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:43:08,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:43:08,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:43:08,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 23:43:08,497 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:43:08,497 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:43:08,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1574289242, now seen corresponding path program 1 times [2023-08-31 23:43:08,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:43:08,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672182113] [2023-08-31 23:43:08,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:43:08,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:43:08,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:43:08,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:43:08,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:43:08,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672182113] [2023-08-31 23:43:08,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672182113] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:43:08,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:43:08,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 23:43:08,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136389078] [2023-08-31 23:43:08,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:43:08,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:43:08,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:43:08,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:43:08,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:43:08,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 182 [2023-08-31 23:43:08,641 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 23 transitions, 119 flow. Second operand has 5 states, 5 states have (on average 82.4) internal successors, (412), 5 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:43:08,642 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:43:08,642 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 182 [2023-08-31 23:43:08,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:43:08,741 INFO L130 PetriNetUnfolder]: 84/170 cut-off events. [2023-08-31 23:43:08,741 INFO L131 PetriNetUnfolder]: For 257/257 co-relation queries the response was YES. [2023-08-31 23:43:08,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 584 conditions, 170 events. 84/170 cut-off events. For 257/257 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 538 event pairs, 6 based on Foata normal form. 1/171 useless extension candidates. Maximal degree in co-relation 577. Up to 96 conditions per place. [2023-08-31 23:43:08,742 INFO L137 encePairwiseOnDemand]: 175/182 looper letters, 34 selfloop transitions, 7 changer transitions 13/54 dead transitions. [2023-08-31 23:43:08,743 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 54 transitions, 391 flow [2023-08-31 23:43:08,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 23:43:08,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 23:43:08,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 515 transitions. [2023-08-31 23:43:08,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4716117216117216 [2023-08-31 23:43:08,745 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 515 transitions. [2023-08-31 23:43:08,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 515 transitions. [2023-08-31 23:43:08,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:43:08,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 515 transitions. [2023-08-31 23:43:08,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 85.83333333333333) internal successors, (515), 6 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:43:08,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 182.0) internal successors, (1274), 7 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:43:08,748 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 182.0) internal successors, (1274), 7 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:43:08,748 INFO L175 Difference]: Start difference. First operand has 36 places, 23 transitions, 119 flow. Second operand 6 states and 515 transitions. [2023-08-31 23:43:08,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 54 transitions, 391 flow [2023-08-31 23:43:08,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 54 transitions, 333 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-08-31 23:43:08,750 INFO L231 Difference]: Finished difference. Result has 41 places, 27 transitions, 133 flow [2023-08-31 23:43:08,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=133, PETRI_PLACES=41, PETRI_TRANSITIONS=27} [2023-08-31 23:43:08,751 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 7 predicate places. [2023-08-31 23:43:08,751 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 27 transitions, 133 flow [2023-08-31 23:43:08,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 82.4) internal successors, (412), 5 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:43:08,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:43:08,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:43:08,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 23:43:08,752 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:43:08,752 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:43:08,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1551982912, now seen corresponding path program 2 times [2023-08-31 23:43:08,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:43:08,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134354370] [2023-08-31 23:43:08,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:43:08,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:43:08,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:43:08,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:43:08,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:43:08,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134354370] [2023-08-31 23:43:08,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134354370] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:43:08,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:43:08,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 23:43:08,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224450391] [2023-08-31 23:43:08,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:43:08,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 23:43:08,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:43:08,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 23:43:08,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-31 23:43:08,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 182 [2023-08-31 23:43:08,914 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 27 transitions, 133 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) [2023-08-31 23:43:08,914 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:43:08,914 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 182 [2023-08-31 23:43:08,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:43:09,024 INFO L130 PetriNetUnfolder]: 84/179 cut-off events. [2023-08-31 23:43:09,024 INFO L131 PetriNetUnfolder]: For 196/196 co-relation queries the response was YES. [2023-08-31 23:43:09,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 650 conditions, 179 events. 84/179 cut-off events. For 196/196 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 589 event pairs, 6 based on Foata normal form. 1/180 useless extension candidates. Maximal degree in co-relation 640. Up to 88 conditions per place. [2023-08-31 23:43:09,025 INFO L137 encePairwiseOnDemand]: 175/182 looper letters, 25 selfloop transitions, 3 changer transitions 27/55 dead transitions. [2023-08-31 23:43:09,025 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 55 transitions, 375 flow [2023-08-31 23:43:09,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 23:43:09,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 23:43:09,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 595 transitions. [2023-08-31 23:43:09,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46703296703296704 [2023-08-31 23:43:09,027 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 595 transitions. [2023-08-31 23:43:09,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 595 transitions. [2023-08-31 23:43:09,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:43:09,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 595 transitions. [2023-08-31 23:43:09,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.0) internal successors, (595), 7 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:43:09,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 182.0) internal successors, (1456), 8 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:43:09,031 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 182.0) internal successors, (1456), 8 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:43:09,031 INFO L175 Difference]: Start difference. First operand has 41 places, 27 transitions, 133 flow. Second operand 7 states and 595 transitions. [2023-08-31 23:43:09,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 55 transitions, 375 flow [2023-08-31 23:43:09,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 55 transitions, 373 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-31 23:43:09,034 INFO L231 Difference]: Finished difference. Result has 47 places, 23 transitions, 116 flow [2023-08-31 23:43:09,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=116, PETRI_PLACES=47, PETRI_TRANSITIONS=23} [2023-08-31 23:43:09,035 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 13 predicate places. [2023-08-31 23:43:09,035 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 23 transitions, 116 flow [2023-08-31 23:43:09,036 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) [2023-08-31 23:43:09,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:43:09,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:43:09,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 23:43:09,037 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:43:09,037 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:43:09,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1983789254, now seen corresponding path program 3 times [2023-08-31 23:43:09,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:43:09,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203875896] [2023-08-31 23:43:09,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:43:09,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:43:09,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:43:09,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:43:09,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:43:09,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203875896] [2023-08-31 23:43:09,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203875896] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:43:09,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:43:09,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 23:43:09,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840553275] [2023-08-31 23:43:09,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:43:09,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:43:09,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:43:09,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:43:09,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:43:09,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 182 [2023-08-31 23:43:09,210 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 23 transitions, 116 flow. Second operand has 5 states, 5 states have (on average 82.4) internal successors, (412), 5 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:43:09,210 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:43:09,210 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 182 [2023-08-31 23:43:09,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:43:09,270 INFO L130 PetriNetUnfolder]: 22/60 cut-off events. [2023-08-31 23:43:09,270 INFO L131 PetriNetUnfolder]: For 83/83 co-relation queries the response was YES. [2023-08-31 23:43:09,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 60 events. 22/60 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 121 event pairs, 4 based on Foata normal form. 1/61 useless extension candidates. Maximal degree in co-relation 222. Up to 33 conditions per place. [2023-08-31 23:43:09,271 INFO L137 encePairwiseOnDemand]: 176/182 looper letters, 0 selfloop transitions, 0 changer transitions 28/28 dead transitions. [2023-08-31 23:43:09,271 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 28 transitions, 198 flow [2023-08-31 23:43:09,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 23:43:09,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 23:43:09,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 495 transitions. [2023-08-31 23:43:09,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4532967032967033 [2023-08-31 23:43:09,273 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 495 transitions. [2023-08-31 23:43:09,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 495 transitions. [2023-08-31 23:43:09,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:43:09,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 495 transitions. [2023-08-31 23:43:09,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 82.5) internal successors, (495), 6 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:43:09,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 182.0) internal successors, (1274), 7 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:43:09,277 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 182.0) internal successors, (1274), 7 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:43:09,278 INFO L175 Difference]: Start difference. First operand has 47 places, 23 transitions, 116 flow. Second operand 6 states and 495 transitions. [2023-08-31 23:43:09,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 28 transitions, 198 flow [2023-08-31 23:43:09,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 28 transitions, 185 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-08-31 23:43:09,279 INFO L231 Difference]: Finished difference. Result has 42 places, 0 transitions, 0 flow [2023-08-31 23:43:09,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=42, PETRI_TRANSITIONS=0} [2023-08-31 23:43:09,280 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 8 predicate places. [2023-08-31 23:43:09,280 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 0 transitions, 0 flow [2023-08-31 23:43:09,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 82.4) internal successors, (412), 5 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:43:09,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 11 remaining) [2023-08-31 23:43:09,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 11 remaining) [2023-08-31 23:43:09,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2023-08-31 23:43:09,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 11 remaining) [2023-08-31 23:43:09,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 11 remaining) [2023-08-31 23:43:09,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2023-08-31 23:43:09,285 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (4 of 11 remaining) [2023-08-31 23:43:09,285 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (3 of 11 remaining) [2023-08-31 23:43:09,285 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 11 remaining) [2023-08-31 23:43:09,285 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 11 remaining) [2023-08-31 23:43:09,285 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 11 remaining) [2023-08-31 23:43:09,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-31 23:43:09,285 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:43:09,289 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-31 23:43:09,289 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-31 23:43:09,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.08 11:43:09 BasicIcfg [2023-08-31 23:43:09,293 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-31 23:43:09,293 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-31 23:43:09,293 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-31 23:43:09,293 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-31 23:43:09,294 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:43:03" (3/4) ... [2023-08-31 23:43:09,296 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-31 23:43:09,301 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-08-31 23:43:09,301 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-08-31 23:43:09,301 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-08-31 23:43:09,306 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2023-08-31 23:43:09,306 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-31 23:43:09,306 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-31 23:43:09,307 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-31 23:43:09,337 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-31 23:43:09,337 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-31 23:43:09,338 INFO L158 Benchmark]: Toolchain (without parser) took 7500.10ms. Allocated memory was 77.6MB in the beginning and 136.3MB in the end (delta: 58.7MB). Free memory was 54.0MB in the beginning and 55.9MB in the end (delta: -1.8MB). Peak memory consumption was 58.4MB. Max. memory is 16.1GB. [2023-08-31 23:43:09,338 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 58.7MB. Free memory is still 36.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 23:43:09,338 INFO L158 Benchmark]: CACSL2BoogieTranslator took 527.52ms. Allocated memory is still 77.6MB. Free memory was 53.8MB in the beginning and 33.7MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-08-31 23:43:09,338 INFO L158 Benchmark]: Boogie Procedure Inliner took 88.61ms. Allocated memory is still 77.6MB. Free memory was 33.7MB in the beginning and 56.7MB in the end (delta: -23.0MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. [2023-08-31 23:43:09,339 INFO L158 Benchmark]: Boogie Preprocessor took 69.44ms. Allocated memory is still 77.6MB. Free memory was 56.7MB in the beginning and 55.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 23:43:09,339 INFO L158 Benchmark]: RCFGBuilder took 493.89ms. Allocated memory is still 77.6MB. Free memory was 55.3MB in the beginning and 40.9MB in the end (delta: 14.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-31 23:43:09,339 INFO L158 Benchmark]: TraceAbstraction took 6270.35ms. Allocated memory was 77.6MB in the beginning and 136.3MB in the end (delta: 58.7MB). Free memory was 40.2MB in the beginning and 59.0MB in the end (delta: -18.8MB). Peak memory consumption was 41.7MB. Max. memory is 16.1GB. [2023-08-31 23:43:09,340 INFO L158 Benchmark]: Witness Printer took 44.24ms. Allocated memory is still 136.3MB. Free memory was 59.0MB in the beginning and 55.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 23:43:09,341 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 58.7MB. Free memory is still 36.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 527.52ms. Allocated memory is still 77.6MB. Free memory was 53.8MB in the beginning and 33.7MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 88.61ms. Allocated memory is still 77.6MB. Free memory was 33.7MB in the beginning and 56.7MB in the end (delta: -23.0MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 69.44ms. Allocated memory is still 77.6MB. Free memory was 56.7MB in the beginning and 55.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 493.89ms. Allocated memory is still 77.6MB. Free memory was 55.3MB in the beginning and 40.9MB in the end (delta: 14.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 6270.35ms. Allocated memory was 77.6MB in the beginning and 136.3MB in the end (delta: 58.7MB). Free memory was 40.2MB in the beginning and 59.0MB in the end (delta: -18.8MB). Peak memory consumption was 41.7MB. Max. memory is 16.1GB. * Witness Printer took 44.24ms. Allocated memory is still 136.3MB. Free memory was 59.0MB in the beginning and 55.9MB 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: 2.5s, 95 PlacesBefore, 34 PlacesAfterwards, 87 TransitionsBefore, 25 TransitionsAfterwards, 1416 CoEnabledTransitionPairs, 6 FixpointIterations, 27 TrivialSequentialCompositions, 50 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 88 TotalNumberOfCompositions, 2687 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1561, independent: 1479, independent conditional: 0, independent unconditional: 1479, dependent: 82, dependent conditional: 0, dependent unconditional: 82, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 782, independent: 761, independent conditional: 0, independent unconditional: 761, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1561, independent: 718, independent conditional: 0, independent unconditional: 718, dependent: 61, dependent conditional: 0, dependent unconditional: 61, unknown: 782, unknown conditional: 0, unknown unconditional: 782] , Statistics on independence cache: Total cache size (in pairs): 57, Positive cache size: 48, Positive conditional cache size: 0, Positive unconditional cache size: 48, 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: 775]: 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, 116 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: 6.1s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 389 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 298 mSDsluCounter, 107 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 81 mSDsCounter, 32 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 806 IncrementalHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 32 mSolverCounterUnsat, 26 mSDtfsCounter, 806 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=133occurred in iteration=8, InterpolantAutomatonStates: 50, 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, 1.8s InterpolantComputationTime, 117 NumberOfCodeBlocks, 117 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 107 ConstructedInterpolants, 0 QuantifiedInterpolants, 591 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-31 23:43:09,360 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