./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe019_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 4633300b13c3e317f8d3cd1cc05f3f76ba271ffedabaa8599cd9617354fa2b7b --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 20:45:24,475 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 20:45:24,477 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 20:45:24,516 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 20:45:24,519 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 20:45:24,522 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 20:45:24,523 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 20:45:24,525 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 20:45:24,526 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 20:45:24,530 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 20:45:24,531 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 20:45:24,534 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 20:45:24,535 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 20:45:24,536 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 20:45:24,537 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 20:45:24,542 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 20:45:24,543 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 20:45:24,545 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 20:45:24,546 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 20:45:24,548 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 20:45:24,554 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 20:45:24,555 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 20:45:24,556 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 20:45:24,556 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 20:45:24,564 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 20:45:24,564 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 20:45:24,564 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 20:45:24,566 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 20:45:24,567 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 20:45:24,567 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 20:45:24,568 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 20:45:24,572 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 20:45:24,574 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 20:45:24,575 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 20:45:24,576 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 20:45:24,576 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 20:45:24,577 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 20:45:24,577 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 20:45:24,577 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 20:45:24,578 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 20:45:24,579 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 20:45:24,580 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 20:45:24,613 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 20:45:24,613 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 20:45:24,614 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 20:45:24,614 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 20:45:24,615 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 20:45:24,615 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 20:45:24,616 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 20:45:24,616 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 20:45:24,616 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 20:45:24,616 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 20:45:24,617 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 20:45:24,617 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 20:45:24,617 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 20:45:24,618 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 20:45:24,618 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 20:45:24,618 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 20:45:24,618 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 20:45:24,618 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 20:45:24,619 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 20:45:24,619 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 20:45:24,619 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 20:45:24,619 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 20:45:24,619 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 20:45:24,620 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 20:45:24,620 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 20:45:24,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 20:45:24,620 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 20:45:24,620 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 20:45:24,621 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 20:45:24,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 20:45:24,621 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 20:45:24,621 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 20:45:24,621 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 20:45:24,622 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 20:45:24,622 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4633300b13c3e317f8d3cd1cc05f3f76ba271ffedabaa8599cd9617354fa2b7b Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 20:45:24,925 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 20:45:24,952 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 20:45:24,954 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 20:45:24,955 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 20:45:24,955 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 20:45:24,957 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-29 20:45:26,032 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 20:45:26,304 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 20:45:26,305 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-29 20:45:26,316 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f615fc2fb/669ad6faa2fe4818941586a4513a8c9e/FLAGae0d0efca [2023-08-29 20:45:26,330 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f615fc2fb/669ad6faa2fe4818941586a4513a8c9e [2023-08-29 20:45:26,337 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 20:45:26,338 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 20:45:26,340 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 20:45:26,341 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 20:45:26,343 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 20:45:26,344 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:45:26" (1/1) ... [2023-08-29 20:45:26,345 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a5d341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:45:26, skipping insertion in model container [2023-08-29 20:45:26,345 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:45:26" (1/1) ... [2023-08-29 20:45:26,351 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 20:45:26,399 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 20:45:26,557 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/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-08-29 20:45:26,736 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:45:26,749 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 20:45:26,762 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/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-08-29 20:45:26,799 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:45:26,877 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 20:45:26,879 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 20:45:26,886 INFO L208 MainTranslator]: Completed translation [2023-08-29 20:45:26,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:45:26 WrapperNode [2023-08-29 20:45:26,887 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 20:45:26,888 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 20:45:26,888 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 20:45:26,888 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 20:45:26,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:45:26" (1/1) ... [2023-08-29 20:45:26,912 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:45:26" (1/1) ... [2023-08-29 20:45:26,941 INFO L138 Inliner]: procedures = 177, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 82 [2023-08-29 20:45:26,942 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 20:45:26,943 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 20:45:26,943 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 20:45:26,943 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 20:45:26,951 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:45:26" (1/1) ... [2023-08-29 20:45:26,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:45:26" (1/1) ... [2023-08-29 20:45:26,958 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:45:26" (1/1) ... [2023-08-29 20:45:26,958 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:45:26" (1/1) ... [2023-08-29 20:45:26,963 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:45:26" (1/1) ... [2023-08-29 20:45:26,964 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:45:26" (1/1) ... [2023-08-29 20:45:26,966 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:45:26" (1/1) ... [2023-08-29 20:45:26,967 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:45:26" (1/1) ... [2023-08-29 20:45:26,970 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 20:45:26,971 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 20:45:26,971 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 20:45:26,971 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 20:45:26,972 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:45:26" (1/1) ... [2023-08-29 20:45:26,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 20:45:26,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 20:45:27,010 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 20:45:27,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 20:45:27,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 20:45:27,047 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-29 20:45:27,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 20:45:27,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 20:45:27,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 20:45:27,048 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-29 20:45:27,048 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-29 20:45:27,048 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-29 20:45:27,048 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-29 20:45:27,048 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-29 20:45:27,048 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-29 20:45:27,049 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-29 20:45:27,049 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-29 20:45:27,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 20:45:27,049 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-29 20:45:27,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 20:45:27,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 20:45:27,050 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 20:45:27,188 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 20:45:27,202 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 20:45:27,463 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 20:45:27,469 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 20:45:27,469 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-29 20:45:27,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:45:27 BoogieIcfgContainer [2023-08-29 20:45:27,471 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 20:45:27,473 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 20:45:27,473 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 20:45:27,476 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 20:45:27,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 08:45:26" (1/3) ... [2023-08-29 20:45:27,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74c08884 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:45:27, skipping insertion in model container [2023-08-29 20:45:27,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:45:26" (2/3) ... [2023-08-29 20:45:27,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74c08884 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:45:27, skipping insertion in model container [2023-08-29 20:45:27,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:45:27" (3/3) ... [2023-08-29 20:45:27,496 INFO L112 eAbstractionObserver]: Analyzing ICFG safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-29 20:45:27,511 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 20:45:27,512 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-29 20:45:27,512 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 20:45:27,606 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 20:45:27,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 111 transitions, 242 flow [2023-08-29 20:45:27,713 INFO L130 PetriNetUnfolder]: 2/107 cut-off events. [2023-08-29 20:45:27,713 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:45:27,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 107 events. 2/107 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 81 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 88. Up to 2 conditions per place. [2023-08-29 20:45:27,718 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 111 transitions, 242 flow [2023-08-29 20:45:27,721 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 103 transitions, 218 flow [2023-08-29 20:45:27,725 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 20:45:27,738 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 114 places, 103 transitions, 218 flow [2023-08-29 20:45:27,741 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 114 places, 103 transitions, 218 flow [2023-08-29 20:45:27,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 103 transitions, 218 flow [2023-08-29 20:45:27,770 INFO L130 PetriNetUnfolder]: 2/103 cut-off events. [2023-08-29 20:45:27,770 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:45:27,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 103 events. 2/103 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 79 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 84. Up to 2 conditions per place. [2023-08-29 20:45:27,775 INFO L119 LiptonReduction]: Number of co-enabled transitions 2250 [2023-08-29 20:45:30,883 INFO L134 LiptonReduction]: Checked pairs total: 3842 [2023-08-29 20:45:30,883 INFO L136 LiptonReduction]: Total number of compositions: 110 [2023-08-29 20:45:30,895 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 20:45:30,900 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;@52ac2e95, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 20:45:30,901 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-08-29 20:45:30,902 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 20:45:30,902 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:45:30,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:45:30,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 20:45:30,904 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-08-29 20:45:30,908 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:45:30,908 INFO L85 PathProgramCache]: Analyzing trace with hash 393, now seen corresponding path program 1 times [2023-08-29 20:45:30,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:45:30,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555241623] [2023-08-29 20:45:30,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:45:30,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:45:30,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:45:31,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:45:31,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:45:31,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555241623] [2023-08-29 20:45:31,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555241623] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:45:31,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:45:31,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 20:45:31,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591019047] [2023-08-29 20:45:31,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:45:31,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 20:45:31,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:45:31,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 20:45:31,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 20:45:31,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 221 [2023-08-29 20:45:31,049 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 29 transitions, 70 flow. Second operand has 2 states, 2 states have (on average 104.5) internal successors, (209), 2 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:31,050 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:45:31,050 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 221 [2023-08-29 20:45:31,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:45:31,281 INFO L130 PetriNetUnfolder]: 920/1334 cut-off events. [2023-08-29 20:45:31,281 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-29 20:45:31,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2743 conditions, 1334 events. 920/1334 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5701 event pairs, 920 based on Foata normal form. 0/1243 useless extension candidates. Maximal degree in co-relation 2731. Up to 1324 conditions per place. [2023-08-29 20:45:31,297 INFO L137 encePairwiseOnDemand]: 213/221 looper letters, 19 selfloop transitions, 0 changer transitions 0/21 dead transitions. [2023-08-29 20:45:31,297 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 21 transitions, 92 flow [2023-08-29 20:45:31,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 20:45:31,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 20:45:31,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 235 transitions. [2023-08-29 20:45:31,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5316742081447964 [2023-08-29 20:45:31,314 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 235 transitions. [2023-08-29 20:45:31,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 235 transitions. [2023-08-29 20:45:31,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:45:31,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 235 transitions. [2023-08-29 20:45:31,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 117.5) internal successors, (235), 2 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:31,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 221.0) internal successors, (663), 3 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:31,328 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 221.0) internal successors, (663), 3 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:31,329 INFO L175 Difference]: Start difference. First operand has 42 places, 29 transitions, 70 flow. Second operand 2 states and 235 transitions. [2023-08-29 20:45:31,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 21 transitions, 92 flow [2023-08-29 20:45:31,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 21 transitions, 88 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-29 20:45:31,336 INFO L231 Difference]: Finished difference. Result has 31 places, 21 transitions, 50 flow [2023-08-29 20:45:31,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=50, PETRI_PLACES=31, PETRI_TRANSITIONS=21} [2023-08-29 20:45:31,341 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -11 predicate places. [2023-08-29 20:45:31,341 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 21 transitions, 50 flow [2023-08-29 20:45:31,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 104.5) internal successors, (209), 2 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:31,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:45:31,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:45:31,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 20:45:31,346 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-08-29 20:45:31,353 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:45:31,353 INFO L85 PathProgramCache]: Analyzing trace with hash -968977465, now seen corresponding path program 1 times [2023-08-29 20:45:31,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:45:31,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682562036] [2023-08-29 20:45:31,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:45:31,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:45:31,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:45:31,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:45:31,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:45:31,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682562036] [2023-08-29 20:45:31,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682562036] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:45:31,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:45:31,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 20:45:31,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159014930] [2023-08-29 20:45:31,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:45:31,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 20:45:31,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:45:31,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 20:45:31,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 20:45:31,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 221 [2023-08-29 20:45:31,883 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:31,884 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:45:31,884 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 221 [2023-08-29 20:45:31,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:45:32,186 INFO L130 PetriNetUnfolder]: 2464/3535 cut-off events. [2023-08-29 20:45:32,187 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:45:32,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7239 conditions, 3535 events. 2464/3535 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 16517 event pairs, 969 based on Foata normal form. 0/3400 useless extension candidates. Maximal degree in co-relation 7236. Up to 2309 conditions per place. [2023-08-29 20:45:32,205 INFO L137 encePairwiseOnDemand]: 213/221 looper letters, 32 selfloop transitions, 7 changer transitions 0/39 dead transitions. [2023-08-29 20:45:32,205 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 39 transitions, 170 flow [2023-08-29 20:45:32,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 20:45:32,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 20:45:32,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 325 transitions. [2023-08-29 20:45:32,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49019607843137253 [2023-08-29 20:45:32,211 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 325 transitions. [2023-08-29 20:45:32,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 325 transitions. [2023-08-29 20:45:32,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:45:32,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 325 transitions. [2023-08-29 20:45:32,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:32,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:32,217 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:32,217 INFO L175 Difference]: Start difference. First operand has 31 places, 21 transitions, 50 flow. Second operand 3 states and 325 transitions. [2023-08-29 20:45:32,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 39 transitions, 170 flow [2023-08-29 20:45:32,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 39 transitions, 170 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 20:45:32,218 INFO L231 Difference]: Finished difference. Result has 35 places, 27 transitions, 104 flow [2023-08-29 20:45:32,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=35, PETRI_TRANSITIONS=27} [2023-08-29 20:45:32,219 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -7 predicate places. [2023-08-29 20:45:32,220 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 27 transitions, 104 flow [2023-08-29 20:45:32,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:32,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:45:32,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:45:32,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 20:45:32,221 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-08-29 20:45:32,223 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:45:32,223 INFO L85 PathProgramCache]: Analyzing trace with hash -968977463, now seen corresponding path program 1 times [2023-08-29 20:45:32,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:45:32,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609991509] [2023-08-29 20:45:32,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:45:32,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:45:32,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:45:32,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:45:32,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:45:32,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609991509] [2023-08-29 20:45:32,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609991509] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:45:32,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:45:32,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 20:45:32,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430749302] [2023-08-29 20:45:32,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:45:32,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 20:45:32,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:45:32,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 20:45:32,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-29 20:45:32,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 221 [2023-08-29 20:45:32,865 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 27 transitions, 104 flow. Second operand has 6 states, 6 states have (on average 86.66666666666667) internal successors, (520), 6 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:32,865 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:45:32,865 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 221 [2023-08-29 20:45:32,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:45:33,119 INFO L130 PetriNetUnfolder]: 1375/2070 cut-off events. [2023-08-29 20:45:33,119 INFO L131 PetriNetUnfolder]: For 1018/1048 co-relation queries the response was YES. [2023-08-29 20:45:33,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5197 conditions, 2070 events. 1375/2070 cut-off events. For 1018/1048 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 10153 event pairs, 414 based on Foata normal form. 204/2193 useless extension candidates. Maximal degree in co-relation 5192. Up to 1777 conditions per place. [2023-08-29 20:45:33,132 INFO L137 encePairwiseOnDemand]: 216/221 looper letters, 31 selfloop transitions, 4 changer transitions 0/38 dead transitions. [2023-08-29 20:45:33,132 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 38 transitions, 208 flow [2023-08-29 20:45:33,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 20:45:33,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 20:45:33,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 541 transitions. [2023-08-29 20:45:33,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4079939668174962 [2023-08-29 20:45:33,134 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 541 transitions. [2023-08-29 20:45:33,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 541 transitions. [2023-08-29 20:45:33,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:45:33,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 541 transitions. [2023-08-29 20:45:33,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.16666666666667) internal successors, (541), 6 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:33,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 221.0) internal successors, (1547), 7 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:33,140 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 221.0) internal successors, (1547), 7 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:33,140 INFO L175 Difference]: Start difference. First operand has 35 places, 27 transitions, 104 flow. Second operand 6 states and 541 transitions. [2023-08-29 20:45:33,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 38 transitions, 208 flow [2023-08-29 20:45:33,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 38 transitions, 188 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 20:45:33,149 INFO L231 Difference]: Finished difference. Result has 37 places, 24 transitions, 86 flow [2023-08-29 20:45:33,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=86, PETRI_PLACES=37, PETRI_TRANSITIONS=24} [2023-08-29 20:45:33,150 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -5 predicate places. [2023-08-29 20:45:33,153 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 24 transitions, 86 flow [2023-08-29 20:45:33,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.66666666666667) internal successors, (520), 6 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:33,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:45:33,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:45:33,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 20:45:33,154 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-08-29 20:45:33,155 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:45:33,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1144932800, now seen corresponding path program 1 times [2023-08-29 20:45:33,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:45:33,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123943126] [2023-08-29 20:45:33,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:45:33,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:45:33,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:45:33,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:45:33,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:45:33,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123943126] [2023-08-29 20:45:33,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123943126] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:45:33,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:45:33,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 20:45:33,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259067220] [2023-08-29 20:45:33,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:45:33,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 20:45:33,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:45:33,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 20:45:33,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-29 20:45:33,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 221 [2023-08-29 20:45:33,362 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 24 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 97.75) internal successors, (391), 4 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:33,365 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:45:33,365 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 221 [2023-08-29 20:45:33,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:45:33,582 INFO L130 PetriNetUnfolder]: 1647/2406 cut-off events. [2023-08-29 20:45:33,582 INFO L131 PetriNetUnfolder]: For 407/407 co-relation queries the response was YES. [2023-08-29 20:45:33,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5947 conditions, 2406 events. 1647/2406 cut-off events. For 407/407 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 10621 event pairs, 249 based on Foata normal form. 33/2439 useless extension candidates. Maximal degree in co-relation 5942. Up to 1391 conditions per place. [2023-08-29 20:45:33,596 INFO L137 encePairwiseOnDemand]: 214/221 looper letters, 37 selfloop transitions, 7 changer transitions 0/44 dead transitions. [2023-08-29 20:45:33,596 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 44 transitions, 232 flow [2023-08-29 20:45:33,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 20:45:33,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 20:45:33,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 422 transitions. [2023-08-29 20:45:33,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47737556561085975 [2023-08-29 20:45:33,602 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 422 transitions. [2023-08-29 20:45:33,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 422 transitions. [2023-08-29 20:45:33,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:45:33,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 422 transitions. [2023-08-29 20:45:33,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 105.5) internal successors, (422), 4 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:33,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 221.0) internal successors, (1105), 5 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:33,606 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 221.0) internal successors, (1105), 5 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:33,607 INFO L175 Difference]: Start difference. First operand has 37 places, 24 transitions, 86 flow. Second operand 4 states and 422 transitions. [2023-08-29 20:45:33,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 44 transitions, 232 flow [2023-08-29 20:45:33,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 44 transitions, 223 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-29 20:45:33,609 INFO L231 Difference]: Finished difference. Result has 38 places, 26 transitions, 114 flow [2023-08-29 20:45:33,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=114, PETRI_PLACES=38, PETRI_TRANSITIONS=26} [2023-08-29 20:45:33,611 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -4 predicate places. [2023-08-29 20:45:33,611 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 26 transitions, 114 flow [2023-08-29 20:45:33,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 97.75) internal successors, (391), 4 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:33,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:45:33,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:45:33,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 20:45:33,613 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-08-29 20:45:33,613 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:45:33,613 INFO L85 PathProgramCache]: Analyzing trace with hash 26467819, now seen corresponding path program 1 times [2023-08-29 20:45:33,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:45:33,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500233509] [2023-08-29 20:45:33,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:45:33,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:45:33,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:45:33,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:45:33,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:45:33,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500233509] [2023-08-29 20:45:33,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500233509] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:45:33,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:45:33,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 20:45:33,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257725716] [2023-08-29 20:45:33,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:45:33,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 20:45:33,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:45:33,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 20:45:33,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 20:45:33,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 221 [2023-08-29 20:45:33,742 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 26 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:33,742 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:45:33,742 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 221 [2023-08-29 20:45:33,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:45:33,906 INFO L130 PetriNetUnfolder]: 1393/2073 cut-off events. [2023-08-29 20:45:33,906 INFO L131 PetriNetUnfolder]: For 1340/1340 co-relation queries the response was YES. [2023-08-29 20:45:33,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5709 conditions, 2073 events. 1393/2073 cut-off events. For 1340/1340 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 9507 event pairs, 411 based on Foata normal form. 12/2003 useless extension candidates. Maximal degree in co-relation 5702. Up to 1712 conditions per place. [2023-08-29 20:45:33,921 INFO L137 encePairwiseOnDemand]: 217/221 looper letters, 30 selfloop transitions, 4 changer transitions 0/36 dead transitions. [2023-08-29 20:45:33,921 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 36 transitions, 219 flow [2023-08-29 20:45:33,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 20:45:33,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 20:45:33,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 333 transitions. [2023-08-29 20:45:33,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.502262443438914 [2023-08-29 20:45:33,923 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 333 transitions. [2023-08-29 20:45:33,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 333 transitions. [2023-08-29 20:45:33,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:45:33,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 333 transitions. [2023-08-29 20:45:33,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:33,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:33,926 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:33,926 INFO L175 Difference]: Start difference. First operand has 38 places, 26 transitions, 114 flow. Second operand 3 states and 333 transitions. [2023-08-29 20:45:33,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 36 transitions, 219 flow [2023-08-29 20:45:33,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 36 transitions, 206 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 20:45:33,933 INFO L231 Difference]: Finished difference. Result has 39 places, 28 transitions, 132 flow [2023-08-29 20:45:33,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=39, PETRI_TRANSITIONS=28} [2023-08-29 20:45:33,935 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -3 predicate places. [2023-08-29 20:45:33,935 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 28 transitions, 132 flow [2023-08-29 20:45:33,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:33,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:45:33,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:45:33,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 20:45:33,936 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-08-29 20:45:33,937 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:45:33,937 INFO L85 PathProgramCache]: Analyzing trace with hash -475725823, now seen corresponding path program 1 times [2023-08-29 20:45:33,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:45:33,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985348075] [2023-08-29 20:45:33,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:45:33,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:45:33,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:45:34,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:45:34,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:45:34,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985348075] [2023-08-29 20:45:34,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985348075] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:45:34,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:45:34,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 20:45:34,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063823791] [2023-08-29 20:45:34,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:45:34,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 20:45:34,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:45:34,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 20:45:34,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-29 20:45:34,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 221 [2023-08-29 20:45:34,121 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 28 transitions, 132 flow. Second operand has 4 states, 4 states have (on average 98.0) internal successors, (392), 4 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:34,121 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:45:34,121 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 221 [2023-08-29 20:45:34,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:45:34,301 INFO L130 PetriNetUnfolder]: 1489/2182 cut-off events. [2023-08-29 20:45:34,302 INFO L131 PetriNetUnfolder]: For 1229/1229 co-relation queries the response was YES. [2023-08-29 20:45:34,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6202 conditions, 2182 events. 1489/2182 cut-off events. For 1229/1229 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 9391 event pairs, 394 based on Foata normal form. 18/2200 useless extension candidates. Maximal degree in co-relation 6194. Up to 1369 conditions per place. [2023-08-29 20:45:34,316 INFO L137 encePairwiseOnDemand]: 215/221 looper letters, 44 selfloop transitions, 8 changer transitions 0/52 dead transitions. [2023-08-29 20:45:34,316 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 52 transitions, 319 flow [2023-08-29 20:45:34,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 20:45:34,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 20:45:34,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 425 transitions. [2023-08-29 20:45:34,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4807692307692308 [2023-08-29 20:45:34,318 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 425 transitions. [2023-08-29 20:45:34,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 425 transitions. [2023-08-29 20:45:34,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:45:34,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 425 transitions. [2023-08-29 20:45:34,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 106.25) internal successors, (425), 4 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) [2023-08-29 20:45:34,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 221.0) internal successors, (1105), 5 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:34,322 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 221.0) internal successors, (1105), 5 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:34,322 INFO L175 Difference]: Start difference. First operand has 39 places, 28 transitions, 132 flow. Second operand 4 states and 425 transitions. [2023-08-29 20:45:34,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 52 transitions, 319 flow [2023-08-29 20:45:34,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 52 transitions, 313 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 20:45:34,327 INFO L231 Difference]: Finished difference. Result has 44 places, 31 transitions, 190 flow [2023-08-29 20:45:34,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=190, PETRI_PLACES=44, PETRI_TRANSITIONS=31} [2023-08-29 20:45:34,327 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2023-08-29 20:45:34,328 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 31 transitions, 190 flow [2023-08-29 20:45:34,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 98.0) internal successors, (392), 4 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:34,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:45:34,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:45:34,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 20:45:34,329 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-08-29 20:45:34,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:45:34,329 INFO L85 PathProgramCache]: Analyzing trace with hash -334140322, now seen corresponding path program 1 times [2023-08-29 20:45:34,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:45:34,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652286415] [2023-08-29 20:45:34,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:45:34,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:45:34,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:45:34,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:45:34,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:45:34,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652286415] [2023-08-29 20:45:34,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652286415] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:45:34,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:45:34,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 20:45:34,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570769390] [2023-08-29 20:45:34,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:45:34,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 20:45:34,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:45:34,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 20:45:34,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 20:45:34,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 221 [2023-08-29 20:45:34,475 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 31 transitions, 190 flow. Second operand has 5 states, 5 states have (on average 95.6) internal successors, (478), 5 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:34,475 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:45:34,476 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 221 [2023-08-29 20:45:34,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:45:34,742 INFO L130 PetriNetUnfolder]: 1995/2956 cut-off events. [2023-08-29 20:45:34,742 INFO L131 PetriNetUnfolder]: For 5489/5489 co-relation queries the response was YES. [2023-08-29 20:45:34,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9244 conditions, 2956 events. 1995/2956 cut-off events. For 5489/5489 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 14499 event pairs, 251 based on Foata normal form. 72/3028 useless extension candidates. Maximal degree in co-relation 9234. Up to 1280 conditions per place. [2023-08-29 20:45:34,767 INFO L137 encePairwiseOnDemand]: 213/221 looper letters, 47 selfloop transitions, 12 changer transitions 22/81 dead transitions. [2023-08-29 20:45:34,767 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 81 transitions, 647 flow [2023-08-29 20:45:34,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 20:45:34,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 20:45:34,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 521 transitions. [2023-08-29 20:45:34,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47149321266968325 [2023-08-29 20:45:34,769 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 521 transitions. [2023-08-29 20:45:34,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 521 transitions. [2023-08-29 20:45:34,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:45:34,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 521 transitions. [2023-08-29 20:45:34,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 104.2) internal successors, (521), 5 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:34,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 221.0) internal successors, (1326), 6 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:34,806 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 221.0) internal successors, (1326), 6 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:34,806 INFO L175 Difference]: Start difference. First operand has 44 places, 31 transitions, 190 flow. Second operand 5 states and 521 transitions. [2023-08-29 20:45:34,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 81 transitions, 647 flow [2023-08-29 20:45:34,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 81 transitions, 638 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 20:45:34,819 INFO L231 Difference]: Finished difference. Result has 49 places, 31 transitions, 219 flow [2023-08-29 20:45:34,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=219, PETRI_PLACES=49, PETRI_TRANSITIONS=31} [2023-08-29 20:45:34,820 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 7 predicate places. [2023-08-29 20:45:34,820 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 31 transitions, 219 flow [2023-08-29 20:45:34,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 95.6) internal successors, (478), 5 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:34,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:45:34,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:45:34,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 20:45:34,821 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-08-29 20:45:34,822 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:45:34,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1666607681, now seen corresponding path program 1 times [2023-08-29 20:45:34,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:45:34,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929518792] [2023-08-29 20:45:34,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:45:34,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:45:34,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:45:35,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:45:35,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:45:35,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929518792] [2023-08-29 20:45:35,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929518792] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:45:35,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:45:35,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 20:45:35,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474758309] [2023-08-29 20:45:35,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:45:35,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 20:45:35,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:45:35,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 20:45:35,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-29 20:45:35,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 221 [2023-08-29 20:45:35,034 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 31 transitions, 219 flow. Second operand has 5 states, 5 states have (on average 97.8) internal successors, (489), 5 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:35,034 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:45:35,034 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 221 [2023-08-29 20:45:35,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:45:35,216 INFO L130 PetriNetUnfolder]: 1333/2026 cut-off events. [2023-08-29 20:45:35,216 INFO L131 PetriNetUnfolder]: For 4318/4318 co-relation queries the response was YES. [2023-08-29 20:45:35,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6725 conditions, 2026 events. 1333/2026 cut-off events. For 4318/4318 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 8949 event pairs, 321 based on Foata normal form. 44/2070 useless extension candidates. Maximal degree in co-relation 6712. Up to 888 conditions per place. [2023-08-29 20:45:35,226 INFO L137 encePairwiseOnDemand]: 215/221 looper letters, 38 selfloop transitions, 8 changer transitions 12/58 dead transitions. [2023-08-29 20:45:35,226 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 58 transitions, 450 flow [2023-08-29 20:45:35,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 20:45:35,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 20:45:35,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 525 transitions. [2023-08-29 20:45:35,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4751131221719457 [2023-08-29 20:45:35,229 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 525 transitions. [2023-08-29 20:45:35,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 525 transitions. [2023-08-29 20:45:35,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:45:35,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 525 transitions. [2023-08-29 20:45:35,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 105.0) internal successors, (525), 5 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:35,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 221.0) internal successors, (1326), 6 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:35,232 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 221.0) internal successors, (1326), 6 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:35,233 INFO L175 Difference]: Start difference. First operand has 49 places, 31 transitions, 219 flow. Second operand 5 states and 525 transitions. [2023-08-29 20:45:35,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 58 transitions, 450 flow [2023-08-29 20:45:35,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 58 transitions, 406 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-08-29 20:45:35,243 INFO L231 Difference]: Finished difference. Result has 49 places, 28 transitions, 181 flow [2023-08-29 20:45:35,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=181, PETRI_PLACES=49, PETRI_TRANSITIONS=28} [2023-08-29 20:45:35,243 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 7 predicate places. [2023-08-29 20:45:35,243 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 28 transitions, 181 flow [2023-08-29 20:45:35,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 97.8) internal successors, (489), 5 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:35,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:45:35,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:45:35,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 20:45:35,245 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-08-29 20:45:35,245 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:45:35,245 INFO L85 PathProgramCache]: Analyzing trace with hash -963236566, now seen corresponding path program 1 times [2023-08-29 20:45:35,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:45:35,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021009339] [2023-08-29 20:45:35,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:45:35,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:45:35,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:45:35,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:45:35,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:45:35,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021009339] [2023-08-29 20:45:35,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021009339] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:45:35,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:45:35,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 20:45:35,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288112343] [2023-08-29 20:45:35,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:45:35,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 20:45:35,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:45:35,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 20:45:35,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-29 20:45:35,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 221 [2023-08-29 20:45:35,360 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 28 transitions, 181 flow. Second operand has 4 states, 4 states have (on average 98.5) internal successors, (394), 4 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:35,360 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:45:35,360 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 221 [2023-08-29 20:45:35,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:45:35,474 INFO L130 PetriNetUnfolder]: 770/1195 cut-off events. [2023-08-29 20:45:35,474 INFO L131 PetriNetUnfolder]: For 2229/2229 co-relation queries the response was YES. [2023-08-29 20:45:35,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3729 conditions, 1195 events. 770/1195 cut-off events. For 2229/2229 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5001 event pairs, 134 based on Foata normal form. 36/1231 useless extension candidates. Maximal degree in co-relation 3717. Up to 600 conditions per place. [2023-08-29 20:45:35,480 INFO L137 encePairwiseOnDemand]: 216/221 looper letters, 33 selfloop transitions, 7 changer transitions 1/41 dead transitions. [2023-08-29 20:45:35,480 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 41 transitions, 298 flow [2023-08-29 20:45:35,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 20:45:35,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 20:45:35,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 418 transitions. [2023-08-29 20:45:35,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47285067873303166 [2023-08-29 20:45:35,483 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 418 transitions. [2023-08-29 20:45:35,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 418 transitions. [2023-08-29 20:45:35,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:45:35,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 418 transitions. [2023-08-29 20:45:35,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:35,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 221.0) internal successors, (1105), 5 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:35,486 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 221.0) internal successors, (1105), 5 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:35,486 INFO L175 Difference]: Start difference. First operand has 49 places, 28 transitions, 181 flow. Second operand 4 states and 418 transitions. [2023-08-29 20:45:35,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 41 transitions, 298 flow [2023-08-29 20:45:35,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 41 transitions, 263 flow, removed 4 selfloop flow, removed 7 redundant places. [2023-08-29 20:45:35,492 INFO L231 Difference]: Finished difference. Result has 46 places, 27 transitions, 157 flow [2023-08-29 20:45:35,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=157, PETRI_PLACES=46, PETRI_TRANSITIONS=27} [2023-08-29 20:45:35,492 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2023-08-29 20:45:35,493 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 27 transitions, 157 flow [2023-08-29 20:45:35,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 98.5) internal successors, (394), 4 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:35,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:45:35,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:45:35,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 20:45:35,493 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-08-29 20:45:35,494 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:45:35,494 INFO L85 PathProgramCache]: Analyzing trace with hash -2006191607, now seen corresponding path program 2 times [2023-08-29 20:45:35,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:45:35,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135791418] [2023-08-29 20:45:35,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:45:35,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:45:35,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:45:35,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:45:35,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:45:35,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135791418] [2023-08-29 20:45:35,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135791418] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:45:35,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:45:35,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 20:45:35,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177506117] [2023-08-29 20:45:35,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:45:35,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 20:45:35,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:45:35,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 20:45:35,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 20:45:35,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 221 [2023-08-29 20:45:35,630 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 27 transitions, 157 flow. Second operand has 4 states, 4 states have (on average 101.5) internal successors, (406), 4 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:35,630 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:45:35,630 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 221 [2023-08-29 20:45:35,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:45:35,755 INFO L130 PetriNetUnfolder]: 604/1010 cut-off events. [2023-08-29 20:45:35,755 INFO L131 PetriNetUnfolder]: For 1930/1965 co-relation queries the response was YES. [2023-08-29 20:45:35,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2928 conditions, 1010 events. 604/1010 cut-off events. For 1930/1965 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5087 event pairs, 211 based on Foata normal form. 51/1004 useless extension candidates. Maximal degree in co-relation 2918. Up to 661 conditions per place. [2023-08-29 20:45:35,760 INFO L137 encePairwiseOnDemand]: 214/221 looper letters, 35 selfloop transitions, 5 changer transitions 27/71 dead transitions. [2023-08-29 20:45:35,760 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 71 transitions, 525 flow [2023-08-29 20:45:35,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 20:45:35,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 20:45:35,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 539 transitions. [2023-08-29 20:45:35,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48778280542986424 [2023-08-29 20:45:35,766 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 539 transitions. [2023-08-29 20:45:35,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 539 transitions. [2023-08-29 20:45:35,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:45:35,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 539 transitions. [2023-08-29 20:45:35,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 107.8) internal successors, (539), 5 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:35,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 221.0) internal successors, (1326), 6 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:35,771 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 221.0) internal successors, (1326), 6 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:35,771 INFO L175 Difference]: Start difference. First operand has 46 places, 27 transitions, 157 flow. Second operand 5 states and 539 transitions. [2023-08-29 20:45:35,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 71 transitions, 525 flow [2023-08-29 20:45:35,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 71 transitions, 467 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-29 20:45:35,776 INFO L231 Difference]: Finished difference. Result has 50 places, 31 transitions, 180 flow [2023-08-29 20:45:35,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=180, PETRI_PLACES=50, PETRI_TRANSITIONS=31} [2023-08-29 20:45:35,777 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 8 predicate places. [2023-08-29 20:45:35,777 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 31 transitions, 180 flow [2023-08-29 20:45:35,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.5) internal successors, (406), 4 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:35,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:45:35,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:45:35,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-29 20:45:35,778 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-08-29 20:45:35,778 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:45:35,778 INFO L85 PathProgramCache]: Analyzing trace with hash 145225936, now seen corresponding path program 1 times [2023-08-29 20:45:35,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:45:35,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969303373] [2023-08-29 20:45:35,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:45:35,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:45:35,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:45:35,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:45:35,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:45:35,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969303373] [2023-08-29 20:45:35,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969303373] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:45:35,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:45:35,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 20:45:35,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618820695] [2023-08-29 20:45:35,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:45:35,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 20:45:35,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:45:35,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 20:45:35,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 20:45:35,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 221 [2023-08-29 20:45:35,942 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 31 transitions, 180 flow. Second operand has 5 states, 5 states have (on average 101.0) internal successors, (505), 5 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:35,943 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:45:35,943 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 221 [2023-08-29 20:45:35,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:45:36,052 INFO L130 PetriNetUnfolder]: 429/756 cut-off events. [2023-08-29 20:45:36,052 INFO L131 PetriNetUnfolder]: For 1878/2063 co-relation queries the response was YES. [2023-08-29 20:45:36,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3048 conditions, 756 events. 429/756 cut-off events. For 1878/2063 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3699 event pairs, 56 based on Foata normal form. 58/787 useless extension candidates. Maximal degree in co-relation 3035. Up to 511 conditions per place. [2023-08-29 20:45:36,057 INFO L137 encePairwiseOnDemand]: 214/221 looper letters, 55 selfloop transitions, 13 changer transitions 8/80 dead transitions. [2023-08-29 20:45:36,057 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 80 transitions, 600 flow [2023-08-29 20:45:36,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 20:45:36,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 20:45:36,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 647 transitions. [2023-08-29 20:45:36,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4879336349924585 [2023-08-29 20:45:36,059 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 647 transitions. [2023-08-29 20:45:36,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 647 transitions. [2023-08-29 20:45:36,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:45:36,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 647 transitions. [2023-08-29 20:45:36,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 107.83333333333333) internal successors, (647), 6 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:36,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 221.0) internal successors, (1547), 7 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:36,064 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 221.0) internal successors, (1547), 7 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:36,064 INFO L175 Difference]: Start difference. First operand has 50 places, 31 transitions, 180 flow. Second operand 6 states and 647 transitions. [2023-08-29 20:45:36,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 80 transitions, 600 flow [2023-08-29 20:45:36,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 80 transitions, 593 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-29 20:45:36,067 INFO L231 Difference]: Finished difference. Result has 54 places, 39 transitions, 283 flow [2023-08-29 20:45:36,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=283, PETRI_PLACES=54, PETRI_TRANSITIONS=39} [2023-08-29 20:45:36,068 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 12 predicate places. [2023-08-29 20:45:36,068 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 39 transitions, 283 flow [2023-08-29 20:45:36,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 101.0) internal successors, (505), 5 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:36,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:45:36,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:45:36,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-29 20:45:36,069 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-08-29 20:45:36,070 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:45:36,070 INFO L85 PathProgramCache]: Analyzing trace with hash 207029457, now seen corresponding path program 1 times [2023-08-29 20:45:36,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:45:36,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316721489] [2023-08-29 20:45:36,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:45:36,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:45:36,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:45:36,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:45:36,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:45:36,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316721489] [2023-08-29 20:45:36,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316721489] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:45:36,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:45:36,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 20:45:36,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755750729] [2023-08-29 20:45:36,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:45:36,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 20:45:36,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:45:36,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 20:45:36,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-29 20:45:36,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 221 [2023-08-29 20:45:36,227 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 39 transitions, 283 flow. Second operand has 6 states, 6 states have (on average 100.66666666666667) internal successors, (604), 6 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:36,227 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:45:36,228 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 221 [2023-08-29 20:45:36,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:45:36,357 INFO L130 PetriNetUnfolder]: 382/705 cut-off events. [2023-08-29 20:45:36,357 INFO L131 PetriNetUnfolder]: For 2250/2548 co-relation queries the response was YES. [2023-08-29 20:45:36,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3608 conditions, 705 events. 382/705 cut-off events. For 2250/2548 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3596 event pairs, 18 based on Foata normal form. 95/777 useless extension candidates. Maximal degree in co-relation 3593. Up to 479 conditions per place. [2023-08-29 20:45:36,361 INFO L137 encePairwiseOnDemand]: 214/221 looper letters, 58 selfloop transitions, 21 changer transitions 13/96 dead transitions. [2023-08-29 20:45:36,361 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 96 transitions, 828 flow [2023-08-29 20:45:36,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-29 20:45:36,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-29 20:45:36,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 859 transitions. [2023-08-29 20:45:36,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4858597285067873 [2023-08-29 20:45:36,364 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 859 transitions. [2023-08-29 20:45:36,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 859 transitions. [2023-08-29 20:45:36,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:45:36,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 859 transitions. [2023-08-29 20:45:36,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 107.375) internal successors, (859), 8 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:36,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 221.0) internal successors, (1989), 9 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:36,369 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 221.0) internal successors, (1989), 9 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:36,369 INFO L175 Difference]: Start difference. First operand has 54 places, 39 transitions, 283 flow. Second operand 8 states and 859 transitions. [2023-08-29 20:45:36,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 96 transitions, 828 flow [2023-08-29 20:45:36,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 96 transitions, 788 flow, removed 15 selfloop flow, removed 2 redundant places. [2023-08-29 20:45:36,378 INFO L231 Difference]: Finished difference. Result has 62 places, 47 transitions, 396 flow [2023-08-29 20:45:36,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=396, PETRI_PLACES=62, PETRI_TRANSITIONS=47} [2023-08-29 20:45:36,378 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 20 predicate places. [2023-08-29 20:45:36,378 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 47 transitions, 396 flow [2023-08-29 20:45:36,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 100.66666666666667) internal successors, (604), 6 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:36,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:45:36,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:45:36,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-29 20:45:36,380 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-08-29 20:45:36,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:45:36,380 INFO L85 PathProgramCache]: Analyzing trace with hash -366328814, now seen corresponding path program 1 times [2023-08-29 20:45:36,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:45:36,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663730013] [2023-08-29 20:45:36,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:45:36,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:45:36,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:45:36,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:45:36,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:45:36,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663730013] [2023-08-29 20:45:36,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663730013] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:45:36,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:45:36,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 20:45:36,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305922220] [2023-08-29 20:45:36,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:45:36,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 20:45:36,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:45:36,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 20:45:36,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-29 20:45:36,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 221 [2023-08-29 20:45:36,528 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 47 transitions, 396 flow. Second operand has 5 states, 5 states have (on average 98.6) internal successors, (493), 5 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:36,528 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:45:36,528 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 221 [2023-08-29 20:45:36,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:45:36,678 INFO L130 PetriNetUnfolder]: 540/997 cut-off events. [2023-08-29 20:45:36,678 INFO L131 PetriNetUnfolder]: For 4881/4881 co-relation queries the response was YES. [2023-08-29 20:45:36,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5303 conditions, 997 events. 540/997 cut-off events. For 4881/4881 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 5187 event pairs, 77 based on Foata normal form. 6/1003 useless extension candidates. Maximal degree in co-relation 5285. Up to 487 conditions per place. [2023-08-29 20:45:36,683 INFO L137 encePairwiseOnDemand]: 215/221 looper letters, 41 selfloop transitions, 6 changer transitions 77/124 dead transitions. [2023-08-29 20:45:36,683 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 124 transitions, 1362 flow [2023-08-29 20:45:36,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 20:45:36,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 20:45:36,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 622 transitions. [2023-08-29 20:45:36,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46907993966817496 [2023-08-29 20:45:36,685 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 622 transitions. [2023-08-29 20:45:36,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 622 transitions. [2023-08-29 20:45:36,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:45:36,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 622 transitions. [2023-08-29 20:45:36,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 103.66666666666667) internal successors, (622), 6 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:36,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 221.0) internal successors, (1547), 7 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:36,690 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 221.0) internal successors, (1547), 7 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:36,690 INFO L175 Difference]: Start difference. First operand has 62 places, 47 transitions, 396 flow. Second operand 6 states and 622 transitions. [2023-08-29 20:45:36,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 124 transitions, 1362 flow [2023-08-29 20:45:36,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 124 transitions, 1043 flow, removed 125 selfloop flow, removed 4 redundant places. [2023-08-29 20:45:36,718 INFO L231 Difference]: Finished difference. Result has 64 places, 36 transitions, 250 flow [2023-08-29 20:45:36,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=250, PETRI_PLACES=64, PETRI_TRANSITIONS=36} [2023-08-29 20:45:36,718 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 22 predicate places. [2023-08-29 20:45:36,719 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 36 transitions, 250 flow [2023-08-29 20:45:36,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 98.6) internal successors, (493), 5 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:36,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:45:36,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:45:36,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-29 20:45:36,720 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-08-29 20:45:36,720 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:45:36,720 INFO L85 PathProgramCache]: Analyzing trace with hash 489331588, now seen corresponding path program 2 times [2023-08-29 20:45:36,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:45:36,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835133294] [2023-08-29 20:45:36,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:45:36,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:45:36,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:45:36,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:45:36,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:45:36,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835133294] [2023-08-29 20:45:36,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835133294] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:45:36,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:45:36,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 20:45:36,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682462456] [2023-08-29 20:45:36,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:45:36,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 20:45:36,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:45:36,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 20:45:36,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-29 20:45:36,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 221 [2023-08-29 20:45:36,888 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 36 transitions, 250 flow. Second operand has 7 states, 7 states have (on average 100.42857142857143) internal successors, (703), 7 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:36,888 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:45:36,888 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 221 [2023-08-29 20:45:36,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:45:36,974 INFO L130 PetriNetUnfolder]: 127/252 cut-off events. [2023-08-29 20:45:36,974 INFO L131 PetriNetUnfolder]: For 863/941 co-relation queries the response was YES. [2023-08-29 20:45:36,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1100 conditions, 252 events. 127/252 cut-off events. For 863/941 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 957 event pairs, 8 based on Foata normal form. 38/280 useless extension candidates. Maximal degree in co-relation 1081. Up to 88 conditions per place. [2023-08-29 20:45:36,976 INFO L137 encePairwiseOnDemand]: 214/221 looper letters, 25 selfloop transitions, 17 changer transitions 18/62 dead transitions. [2023-08-29 20:45:36,976 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 62 transitions, 532 flow [2023-08-29 20:45:36,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-29 20:45:36,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-29 20:45:36,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 839 transitions. [2023-08-29 20:45:36,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4745475113122172 [2023-08-29 20:45:36,979 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 839 transitions. [2023-08-29 20:45:36,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 839 transitions. [2023-08-29 20:45:36,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:45:36,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 839 transitions. [2023-08-29 20:45:36,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 104.875) internal successors, (839), 8 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:36,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 221.0) internal successors, (1989), 9 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:36,984 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 221.0) internal successors, (1989), 9 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:36,985 INFO L175 Difference]: Start difference. First operand has 64 places, 36 transitions, 250 flow. Second operand 8 states and 839 transitions. [2023-08-29 20:45:36,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 62 transitions, 532 flow [2023-08-29 20:45:36,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 62 transitions, 472 flow, removed 15 selfloop flow, removed 9 redundant places. [2023-08-29 20:45:36,989 INFO L231 Difference]: Finished difference. Result has 59 places, 32 transitions, 232 flow [2023-08-29 20:45:36,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=232, PETRI_PLACES=59, PETRI_TRANSITIONS=32} [2023-08-29 20:45:36,989 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 17 predicate places. [2023-08-29 20:45:36,989 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 32 transitions, 232 flow [2023-08-29 20:45:36,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 100.42857142857143) internal successors, (703), 7 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:36,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:45:36,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:45:36,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-29 20:45:36,991 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-08-29 20:45:36,991 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:45:36,991 INFO L85 PathProgramCache]: Analyzing trace with hash -958573044, now seen corresponding path program 1 times [2023-08-29 20:45:36,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:45:36,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060431189] [2023-08-29 20:45:36,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:45:36,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:45:37,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:45:37,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:45:37,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:45:37,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060431189] [2023-08-29 20:45:37,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060431189] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:45:37,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:45:37,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 20:45:37,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228173281] [2023-08-29 20:45:37,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:45:37,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 20:45:37,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:45:37,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 20:45:37,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 20:45:37,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 221 [2023-08-29 20:45:37,143 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 32 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 98.0) internal successors, (392), 4 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:37,143 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:45:37,143 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 221 [2023-08-29 20:45:37,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:45:37,194 INFO L130 PetriNetUnfolder]: 73/142 cut-off events. [2023-08-29 20:45:37,194 INFO L131 PetriNetUnfolder]: For 324/324 co-relation queries the response was YES. [2023-08-29 20:45:37,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 652 conditions, 142 events. 73/142 cut-off events. For 324/324 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 336 event pairs, 10 based on Foata normal form. 1/143 useless extension candidates. Maximal degree in co-relation 635. Up to 85 conditions per place. [2023-08-29 20:45:37,195 INFO L137 encePairwiseOnDemand]: 214/221 looper letters, 0 selfloop transitions, 0 changer transitions 46/46 dead transitions. [2023-08-29 20:45:37,195 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 46 transitions, 400 flow [2023-08-29 20:45:37,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 20:45:37,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 20:45:37,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 494 transitions. [2023-08-29 20:45:37,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470588235294118 [2023-08-29 20:45:37,197 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 494 transitions. [2023-08-29 20:45:37,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 494 transitions. [2023-08-29 20:45:37,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:45:37,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 494 transitions. [2023-08-29 20:45:37,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 98.8) internal successors, (494), 5 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:37,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 221.0) internal successors, (1326), 6 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:37,201 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 221.0) internal successors, (1326), 6 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:37,201 INFO L175 Difference]: Start difference. First operand has 59 places, 32 transitions, 232 flow. Second operand 5 states and 494 transitions. [2023-08-29 20:45:37,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 46 transitions, 400 flow [2023-08-29 20:45:37,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 46 transitions, 313 flow, removed 13 selfloop flow, removed 11 redundant places. [2023-08-29 20:45:37,203 INFO L231 Difference]: Finished difference. Result has 48 places, 0 transitions, 0 flow [2023-08-29 20:45:37,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=48, PETRI_TRANSITIONS=0} [2023-08-29 20:45:37,204 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 6 predicate places. [2023-08-29 20:45:37,204 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 0 transitions, 0 flow [2023-08-29 20:45:37,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 98.0) internal successors, (392), 4 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:37,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 14 remaining) [2023-08-29 20:45:37,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 14 remaining) [2023-08-29 20:45:37,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 14 remaining) [2023-08-29 20:45:37,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 14 remaining) [2023-08-29 20:45:37,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 14 remaining) [2023-08-29 20:45:37,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 14 remaining) [2023-08-29 20:45:37,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 14 remaining) [2023-08-29 20:45:37,208 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 14 remaining) [2023-08-29 20:45:37,208 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (5 of 14 remaining) [2023-08-29 20:45:37,208 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (4 of 14 remaining) [2023-08-29 20:45:37,208 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 14 remaining) [2023-08-29 20:45:37,208 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 14 remaining) [2023-08-29 20:45:37,208 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 14 remaining) [2023-08-29 20:45:37,209 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 14 remaining) [2023-08-29 20:45:37,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-29 20:45:37,209 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:45:37,212 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 20:45:37,212 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 20:45:37,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 08:45:37 BasicIcfg [2023-08-29 20:45:37,215 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 20:45:37,215 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 20:45:37,215 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 20:45:37,215 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 20:45:37,216 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:45:27" (3/4) ... [2023-08-29 20:45:37,218 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-29 20:45:37,223 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-08-29 20:45:37,223 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-08-29 20:45:37,224 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-08-29 20:45:37,224 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2023-08-29 20:45:37,227 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2023-08-29 20:45:37,228 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-29 20:45:37,228 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-29 20:45:37,228 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-29 20:45:37,254 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-29 20:45:37,255 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 20:45:37,255 INFO L158 Benchmark]: Toolchain (without parser) took 10916.96ms. Allocated memory was 75.5MB in the beginning and 270.5MB in the end (delta: 195.0MB). Free memory was 52.0MB in the beginning and 195.4MB in the end (delta: -143.4MB). Peak memory consumption was 52.8MB. Max. memory is 16.1GB. [2023-08-29 20:45:37,255 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 62.9MB. Free memory is still 40.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 20:45:37,256 INFO L158 Benchmark]: CACSL2BoogieTranslator took 546.62ms. Allocated memory is still 75.5MB. Free memory was 52.0MB in the beginning and 49.7MB in the end (delta: 2.4MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. [2023-08-29 20:45:37,256 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.30ms. Allocated memory is still 75.5MB. Free memory was 49.7MB in the beginning and 47.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 20:45:37,256 INFO L158 Benchmark]: Boogie Preprocessor took 27.00ms. Allocated memory is still 75.5MB. Free memory was 47.6MB in the beginning and 46.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 20:45:37,257 INFO L158 Benchmark]: RCFGBuilder took 500.93ms. Allocated memory is still 75.5MB. Free memory was 45.8MB in the beginning and 30.4MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-08-29 20:45:37,257 INFO L158 Benchmark]: TraceAbstraction took 9741.72ms. Allocated memory was 75.5MB in the beginning and 270.5MB in the end (delta: 195.0MB). Free memory was 29.7MB in the beginning and 198.5MB in the end (delta: -168.8MB). Peak memory consumption was 29.0MB. Max. memory is 16.1GB. [2023-08-29 20:45:37,257 INFO L158 Benchmark]: Witness Printer took 39.55ms. Allocated memory is still 270.5MB. Free memory was 198.5MB in the beginning and 195.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 20:45:37,258 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 62.9MB. Free memory is still 40.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 546.62ms. Allocated memory is still 75.5MB. Free memory was 52.0MB in the beginning and 49.7MB in the end (delta: 2.4MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.30ms. Allocated memory is still 75.5MB. Free memory was 49.7MB in the beginning and 47.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.00ms. Allocated memory is still 75.5MB. Free memory was 47.6MB in the beginning and 46.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 500.93ms. Allocated memory is still 75.5MB. Free memory was 45.8MB in the beginning and 30.4MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 9741.72ms. Allocated memory was 75.5MB in the beginning and 270.5MB in the end (delta: 195.0MB). Free memory was 29.7MB in the beginning and 198.5MB in the end (delta: -168.8MB). Peak memory consumption was 29.0MB. Max. memory is 16.1GB. * Witness Printer took 39.55ms. Allocated memory is still 270.5MB. Free memory was 198.5MB in the beginning and 195.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.1s, 114 PlacesBefore, 42 PlacesAfterwards, 103 TransitionsBefore, 29 TransitionsAfterwards, 2250 CoEnabledTransitionPairs, 6 FixpointIterations, 29 TrivialSequentialCompositions, 68 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 2 ChoiceCompositions, 110 TotalNumberOfCompositions, 3842 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1988, independent: 1897, independent conditional: 0, independent unconditional: 1897, dependent: 91, dependent conditional: 0, dependent unconditional: 91, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1183, independent: 1158, independent conditional: 0, independent unconditional: 1158, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1988, independent: 739, independent conditional: 0, independent unconditional: 739, dependent: 66, dependent conditional: 0, dependent unconditional: 66, unknown: 1183, unknown conditional: 0, unknown unconditional: 1183] , Statistics on independence cache: Total cache size (in pairs): 59, Positive cache size: 49, Positive conditional cache size: 0, Positive unconditional cache size: 49, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 786]: 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 9 procedures, 140 locations, 14 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: 9.6s, OverallIterations: 15, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 626 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 480 mSDsluCounter, 158 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 82 mSDsCounter, 85 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1310 IncrementalHoareTripleChecker+Invalid, 1395 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 85 mSolverCounterUnsat, 76 mSDtfsCounter, 1310 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=396occurred in iteration=12, InterpolantAutomatonStates: 74, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 197 NumberOfCodeBlocks, 197 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 182 ConstructedInterpolants, 0 QuantifiedInterpolants, 1147 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 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 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-29 20:45:37,280 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